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    • 专利摘要:
    preform for a liquid dispensing apparatus and method of blow molding a preform. flair preforms and improved flair applications are presented. in exemplary embodiments of the present invention, if two different materials that do not fuse together are used to make a preform, then said preform can be manufactured by a bi-injection process, making use of the same mold. in this said configuration, firstly the outer preform can be formed, and then the inner preform can be molded through a central hole provided in the base of the outer preform. the two preforms are then joined together. the two materials can be different, such as pet and a polyolefin or polyamide, or, for example, they can even be the same, such as pet/pet, as long as measures are taken to prevent melting during the molding of the layer. second preform. in a given process, a non-stick coating can be sprayed on the surface that will be between the preforms, where the second realization will touch the first, and after said application, the second container can be molded, also in a 2c process. fabrication can be either external or internal, or internal and then external, in various exemplary configurations. if it is the outer and then the inner, the non-stick coating can be sprayed on the inner part to make the first outer molding, followed by molding the inner preform. conversely, if the non-stick coating is sprayed on the outside to make the first inner molding, then it is followed by molding the outer preform. the material from which the inner container is manufactured, the degree of shrinkage it will experience relative to the outer container, and the maximum concurrent hot fill temperature that can be withstood, can all be designed for a given application, use or range of uses.
    公开号:BR112013015059B1
    申请号:R112013015059-9
    申请日:2011-12-19
    公开日:2021-07-20
    发明作者:Wilhelmus Johannes Joseph Maas；Petrus Lambertus Wilhelmus Hurkmans；Aaron S. Haleva
    申请人:Dispensing Technologies B.V.；
    IPC主号:
    专利说明:

    [0001] This application claims the benefit of Provisional US Patent Application Number 61/459,712, entitled "IMPROVED PREFORMS FOR FLAIR APPLICATIONS", and filed December 17, 2010. TECHNICAL FIELD:
    [0002] The present invention relates to blow molding technologies and dispensers, and in particular to new preforms for use in liquid distribution systems of the Flair® type, or dosing nozzle with Flair® technology. TECHNICAL STATUS
    [0003] The Flair® technology, developed and marketed by its owner, Dispensing Technologies, BV, of Helmond, Netherlands, uses a "bag within the bag", or inner layer and outer layer system to distribute products as liquids, by example. The two layers are formed as plastic preforms, and thus blown to final size. Sometimes these two layers, or two preforms are known as a “bilayer” layer or preform, as appropriate. In this way, there is an inner preform and an outer preform, which, once blown to final size, become an inner layer and an outer layer. The inner and outer preforms can be made, for example, of the same material, such as, for example, a polyolefin, or, for example, they can be made of different materials, such as, for example, PET and a polyolefin, such as, for example, polypropylene ("PP").
    [0004] The Dosing Nozzle with Flair® technology, uses a displacement medium, such as air, for example, to maintain a certain pressure between the inner layer (8) and the outer layer (9). This causes the inner layer (8) to shrink as the liquid provided inside is dispensed, and thus avoids the need for the liquid to come into contact with the air or external environment. The two layers of metering nozzle with Flair® technology, are joined at their tops (3) and at the base, and there is a passage for the displacement medium to enter, or be pumped in between. The creation and provision of these elements needs to be analyzed when creating the preforms.
    [0005] When the inner and outer preforms are made of the same material, or different materials, but having essentially equal molding temperatures, special care must be taken so that the two preforms do not fuse over their interfaces and become joined to one another.
    [0006] Additionally, in some circumstances, the two preforms can be molded in new and more efficient ways.
    [0007] Several improved methods for molding preforms, as well as new designs and variations for different contexts, are presented. SUMMARY OF THE INVENTION:
    [0008] The perfected preforms for applications such as the dosing tip with Flair® technology are presented. In the embodiment examples of the present invention, if two different materials that do not come together are used to form a preform, then said preform can be made by a bi-injection process, using the same mold. In said configuration examples, first the outer preform can be formed, then the inner preform can be molded through a central hole provided in the base of the outer preform. The two preforms are connected to each other. The two materials can be different, such as PET and a polyolefin, or, for example, they can still be the same, such as PET/PET, if steps are followed to prevent melting during molding of the second preform layer .
    [0009] In said process, a non-stick coating (34) can be applied on the surface that will be between the preforms, where the second preform will touch the first, and after said application, the second layer can be molded, too in a 2C process. The manufacturing order can be either external or internal, or internal and then external, in various configuration examples. If external and then internal, the non-stick coating (34) can be applied to the interior of the first external molded preform, followed by molding the internal preform. Otherwise, the non-stick coating (34) is applied to the exterior of the molded inner preform, then molding the outer preform. In configuration examples of the present invention, the material from which the layer is made, the level of shrinkage it will have relative to the outer layer, and the maximum heat temperature of the concomitant fill it can withstand, can all be assigned to a given application, use or range of uses. BRIEF DESCRIPTION OF THE DRAWINGS
    [00010] Note that the US patent or application file contains at least one drawing represented in color (not applicable for PCT application). Copies of this patent or publication of the patent application with color drawings will be provided by the US Patent Office upon request and payment of the necessary fee. Figure 1 represents as an example a bottle (1) left view and preform (2) right view of bilayer without an air valve provided in the layers, for apparatus having an air valve according to configuration examples of the present invention. Figure 2 represents with examples a bilayer bottle (1), with a secure connection between the bottle (1) and an air tube (21) according to configuration examples of the present invention. Figure 3 represents the perspective view, longitudinal and transverse, of a bottle (1) of bilayer as an example, provided with an air pressure regulating mechanism according to an example of configuration of the present invention. Figure 3A illustrates by way of example a preform without an air valve and formed using an overmolding process, in accordance with an exemplary configuration of the present invention. Figure 3B illustrates the process of blowing a bottle (1) from a preform according to an exemplary embodiment of the present invention. Figure 3C represents several details with an example of a bottle (1) without an air valve according to an example configuration of the present invention. Figure 3D is close-up details of cross-sections along lines C-C, D-D and E-E as shown in Figure 3D. Figure 3E illustrates the process of separating the layers in a bottle (1) formed from a preform according to an example configuration of the present invention. Figure 3F illustrates the inner layer push pin being contacted with a joined portion of an air supply device in accordance with an exemplary embodiment of the present invention. Figures 3G and 3H illustrate the initiation of layer separation by introducing positive pressure from the air supply device through the hole now created by the push pin; Figure 3I illustrates how after the layers are separated, the air supply device can change to a low pressure causing the inner layer (8) to follow the shape and contour of the outer layer (9). Figure 3L shows the final result of the layer separation process according to an example configuration of the present invention. Figure 4 represents with examples the internal and external preforms for a PET/PET corrugated neck-type preform, where the preforms are welded by rotation at the top (3) to connect them according to example configurations of the present invention. Figures 4A and 4B illustrate the inner and outer layers of a PET/PET preform for a standard Flair® technology dispensing nozzle system in accordance with an example configuration of the present invention. Figure 4C illustrates how the inner layer is mounted to the outer layer for the PET/PET preform of Figures 4A and B. Figure 4D shows how the inner layer is connected to the outer layer by means of an ultrasonic deformation of its central pin according to an exemplary configuration of the present invention. Figures 4E and 4F illustrate a one-way valve used in connection with the PET/PET preform of Figure 4. Figure 4G illustrates the connection of the one-way valve of Figures 4E and 4F to the PET/PET preform of Figures 4A and 4B according to an example of configuration of the present invention. Figure 5 represents assembly steps of an example bilayer preform connected to an apparatus having a built-in air valve according to the configuration examples of the present invention. Figure 5A shows close-up details of an example preform with and without an example power connector. Figures 6 and 7 represent two stages in the manufacture of a PET/PP preform according to the configuration examples of the present invention. Figure 6A illustrates a first step of 2C molding a PET/PP preform for use in standard Flair® technology dispensing nozzle applications with hooks (29) to prevent rotation according to an example configuration of the present invention. Figure 7A illustrates a second step in the 2C molding of the small Flair® standard PET/PP bayonet technology dispensing nozzle preform. Figure 7B illustrates methods and geometries for achieving a tight sealing connection between the inner and outer layers of the preform of Figures 6A and 7A. Figures 8 to 10 represent two stages in the manufacture of a PET/PET preform according to configuration examples of the present invention where the outer layer is molded first. Figure 8A illustrates a first step in molding the outer layer of a Flair® technology standard PET/PET bayonet 2C dispensing nozzle preform with hooks (29) to prevent rotation according to the configuration example of the present invention. Figures 9 and 9A illustrate the deposit of a non-stick coating (34) between the layers. Figure 10A illustrates the second step of molding the inner layer (8) of the Flair® technology standard PET/PET bayonet 2C dispensing nozzle preform. Figures 11 to 14 depict two stages in the manufacture of a PET/PET preform in accordance with the alternative configuration examples of the present invention where the inner layer is molded first and a non-stick coating (34) deposited between the layers. Figures 15 and 16 represent an example of preform with a bayonet neck finish, used in "OpUs" type sprayers according to the configuration examples of the present invention. Figure 17 represents an example of a PET/PP preform with a corrugated neck finish in accordance with the embodiment examples of the present invention; Figure 18 represents several views of an example preform with a corrugated neck, with an air valve and a dip tube according to the configuration examples of the present invention. Figure 19 represents how an example of preform can be blown into various types of bottle (1), with examples of dimensions provided for a flat type base, according to configuration examples of the present invention. Figures 20 to 22 represent an example process for the 2C molding of a PET/PET preform of the "Plunger Application" type according to configuration examples of the present invention. Figures 23 to 25 represent an example of an alternative process for the 2C molding of a bayonet-type "Plunger Application" PET/PET preform in accordance with the configuration examples of the present invention. Figures 26A and 26B illustrate a preform with a one-way valve in accordance with an exemplary embodiment of the present invention. Figures 26C and 26D respectively illustrate a low pressure situation and a high pressure situation in the preform of Figure 26A. Figure 26E illustrates the functionality of not refilling a bottle (1) made from the preform of Figure 26A. Figures 26F through 26H illustrate details of attaching the one-way valve to the base of the preform of Figure 26A, where a layer release button is used on the preform; and Figures 27A and 27B illustrate a bayonet fitting neck finish with 3 latches in accordance with exemplary embodiments of the present invention. Figure 27C is a top view showing various structures in the neck of Figures 27A and B; Figures 27D and 27E show an example of an alternative configuration of the present invention with a bayonet fitting neck finish with 4 locks and details thereof. Figure 27F shows a top view of the relationship of various structures of the bayonet snap-on neck finish with 4 latches of Figure 27D. Figure 27G illustrates details of an interior probe for a snap-on hook in an example lock of the 4-lock bayonet snap-on neck finish of Figure 27D. Figures 27H and 27I illustrate bayonet fitting capsules with 4 locks according to the configuration examples of the present invention. Figure 27J illustrates the principle of fixing the bayonet capsule with 4 locks of Figures 27H and I in a bottle (1) of the Flair® technology dispensing nozzle type provided with a bayonet neck finish with 4 locks according to the configuration examples of the present invention. Figures 27K, 27L and 27M are enlarged views of each of the images in Figure 27J for ease of illustration; Figure 27N illustrates the principle of the bayonet capsule with 4 locks according to the configuration examples of the present invention. Figure 27O illustrates features of the "end support" (on all four latches) and the "rollback support" (on two latches), according to the configuration examples of the present invention. Figure 27P illustrates the principle of the bayonet cap with 4 locks, detailing the interconnection of the cap hooks (29) with the neck locks according to the configuration examples of the present invention. Figures 27Q, 27R and 27S illustrate further details of the dock functionality. Figure 27T illustrates an example of a cap and bottle neck (1) where the removable fitting has been completed, and Figure 27U illustrates an example of a cap and bottle neck (1) where the non-removable fitting has been completed. Figure 28A shows an example of a preform, rotating inside a heating oven so that it is ready to be blown into a bottle (1). Figure 28B represents a completely blown bottle (1), and a detail of the corners of the base, for an example of preform according to the configuration examples of the present invention. Figure 28C represents a comparison of plasticization curves for two examples of materials used, respectively, as the outer layer (9) and the inner layer (8) of a preform, in accordance with the configuration examples of the present invention; and Figure 28D represents the comparison of Figure 28C after modifying Material "B" (inner layer (8)) so that the plasticization curves are aligned. DETAILED DESCRIPTION OF THE INVENTION
    [00011] Preforms for multiple layers within single layer applications have an inner layer (8) and an outer layer (9). Conventionally, these layers are molded separately, and then brought together and attached by some means, usually in a separate process and often developed by the unit blowing the preforms to full size. This can be inefficient. It also means that manufacturing the preforms does not create a finished product, and yet another processing step is needed to actually get the preforms so they can be used. It is noted that for dispensing technologies of dispensing nozzles with Flair® technology and "bag in bag" similar to the inner layer (8) must be sealed to the outer layer so that there is no leakage of any liquid from the inner layer, and so that said liquid does not contact the ambient air or any surroundings.
    [00012] In the configuration examples of the present invention, if two different materials, which do not join together, are used to make a preform, such as, for example, PET/PP, then said preform can be made by a bi-injection molding process (also known as a “two-component” or “2C” process, and often used here), using the same mold. In said configuration examples, the outer preform can be molded first and then the inner preform can be molded through a central hole provided on or in the base of the outer preform. By virtue of the bi-injection molding, the two preforms are thus connected to each other at the base and at the top (3). Said bi-injection molding process has greater efficiency. Additionally, if a preform with both layers compressing the same material is desired, eg PET/PET, then the preform can also be made using a 2C process if appropriate steps are applied to prevent layer bonding. inner to outer layer, as well as, for example, applying a non-stick coating (34) between injections, as described below.
    [00013] Alternatively, the two preforms can be molded separately, and then connected, by a variety of possible connection processes, including welding, crimping and the like.
    [00014] In all said processes, a finished preform, ready for blowing without results of additional processing steps. Several of said processes and features are described below with reference to the figures.
    [00015] Figure 1 represents an example of bottle (1) of bilayer (left image) and preform (right image) according to configuration examples of the present invention. The bottle (1) and preform do not contain an integrated air valve, as this can be provided in an apparatus (referred to as “equipment” in the figure) whose bottle (1) is intended to be connected to it. The bottle (1) can be fixed at the top (3) and at the base, and thus being completely sealed inside a dispensing device.
    [00016] Figure 2 represents an example of a bilayer bottle (1) with a petaloid base (like that used in a 2L soft drink bottle (1) and the like) illustrating that the connection between the bottle (1) and a tube of air (21) connected to the cylinder base (1) must be secure. The image on the left illustrates how the inner layer (8) is welded to the outer layer (9) at the base of the bottle (1). Because there is a pressure maintained between the two layers of the bottle (1), since the device is open at the top (3) (and thus no valve containing the liquid), if the pressure is not released, the liquid inside the bottle (1) can be splashed. In this way, a mechanism is needed to release that pressure when removing the bottle (1), for example, to replace it. As noted, these cylinders (1) do not have an air connector, so this air pressure cannot simply be released by reverse pumping or opening the pump valve to atmosphere. If there is no closed valve at the top (3) of the bottle (1) and the valves are in the apparatus, then it is necessary for the air between the two layers of the bottle (1) to be released before the bottle (1) is removed from the apparatus to prevent the liquid from being splashed.
    [00017] Figure 3 provides the solution to this problem. Figure 3 is a perspective, transverse and longitudinal view of an example of a bilayer preform provided with an air pressure regulating mechanism in accordance with an exemplary embodiment of the present invention. This mechanism is part of the outer layer (9) of the preform, and is attached to it. As seen in Figure 3, the outer preform has a “U” shaped slot at its base as well as a central hole. When the inner layer (8) is molded, this inner layer (8) protrudes through the hole, as seen in the center image of Figure 3, and also fills in the indent under the hole, as shown. Prior to removing the bottle (1) from their appliance (as shown in Figure 2), a user simply depresses the “booster” or air release mechanism that is built into the outer preform (shown in gray in Figure 3). Since the portion of the outer layer with the “U” shaped slit is attached to the inner layer in the central protrusion, pressing the “pusher” at the apex of the “U”, this releases air pressure between the inner preforms and external, avoiding any air retention. The air simply flows out of the air inlet, as shown in the image to the right of Figure 3, as it is higher than the atmospheric pressure between the layers of the bottle (1).
    [00018] The air pressure regulator mechanism has another functionality. It can be pressed after blowing the preform into the bottle (1) to release the inner layer (8) from the outer layer (9) after blowing. In molding, around the door of each cavity, the temperature becomes warmer due to the fact that when the material enters the cavity, the temperature rises close to the melting temperature of the other material and so the flexible portion of the inner layer is glued to the outer layer (9) . By pressing the button as the bottle (1) is blown, the inner bag will release from the outer bag, allowing air or other means of distribution to fill the space between the layers, thus facilitating the operation of a bag inside the bag” “or dispensing nozzle with Flair® technology.
    [00019] Figure 3A illustrates details of a preform as shown in Figure 3, also without an air valve. With reference to Figure 3A, there is a perspective base view in (a), then a base view in (b) showing two lines through which cross sections are provided on the right side of the figure. As can be seen in the cross section along line A-A in (c), a variation of the impeller of Figure 3, namely a thrust pin protrusion, only appears on one side of the central axis. Said push pin concentrates the force at one point, thus facilitating the introduction of layer separation. It is also smaller, and therefore easier to mold, as it forms part of the inner layer (8).
    [00020] The other circular structure (shown between the two ventilation holes) is not functional, a coupled profile used in the molding process is preferable. Additionally there are two vent holes seen in (b), one of which is seen in cross section through line B-B, to the right of the center connector, in Figure 3A(d).
    [00021] Figure 3B illustrates how the preform in Figure 3 can be blown to generate a full-size bottle (1), where the neck and center of the base remain with their preform sizes, and the rest of the preform is blown to a full size. Figure 3C shows the same preform as in Figure 3A now blown into a bottle (1). This bottle (1) is without an air valve, the air valve is on the device as described below. Figures 3C(a) and (e) provide a number of lines through which cross sections are provided in Figures 3C(b), (c) and (d), and respectively enlarged in Figure 3D.
    [00022] Figure 3D presents the detailed enlargement of the bases of the cross sections through lines C-C, D-D and E-E of Figures 3C. With reference to this, in Figure 3D(b) (as well as in 3C and (c)) a ripple in the blow mold is shown. The outer layer follows this shape and the inner layer comes loose after shrinking. By creating an air space, as the inner layer (8) shrinks, this aspect improves the separation of the layers and prevents the "blocking" (sealing) of the inner layer against the outer layer when air needs to be quickly released . Figure 3D(c) shows one of the air inlets, or vent holes, for introducing air between the inner layer (8) and the outer layer (9), as described above.
    [00023] Figures 3E-3L, described below, illustrate the process of separating the inner layer (8) from the outer layer (9), since the bottle (1) is completely blown from the pre stage. - form. With reference to this, Figure 3E shows the bottle (1) completely blown and a detailed enlargement of the base of the bottle (1) showing the layer separating device formed by the push pin as shown in Figure 3A, section A-A. Figure 3F shows the inner layer push pin being pushed up on the bottle (1) while an air supply device (part of the "apparatus") is attached to the base of the bottle (1).
    [00024] Figure 3G shows how the layers can be separated once the feeding device applies a positive pressure in the space between the two layers. This pressure somehow flows through the space created by pushing the push pin and obviously through the vent holes. Figure 3H shows the continuation of this process and, as can be seen, the inner layer (8) in the green light has risen relative to the outer layer (9) (gray).
    [00025] In this way, a space was created between them. In general, layer separation can take place right after blowing, as the bottle (1) has been cooled to 50-60 degrees Celsius. The process can also be done when the bottle (1) is completely cooled, if the weather is not an issue.
    [00026] Figure 3I shows the situation where the air supply device now switches to a low pressure (partial vacuum) and sucks back in the air that was used for layer separation. This is necessary to allow the inner layer (8) to present its actual blown shape, and thus be filled with an actual measure of the liquid that has been designated for transport.
    [00027] Additionally, from a market perspective, if an inner bottle (1) is not full, it may appear to a layman as used or re-filled, which is not desirable.
    [00028] Figure 3J shows the continuation of the process as shown in Figure 3I where the inner layer now has the shape of the interior of the outer layer (9) without an air gap, the layers still remain separable, to thus operate in accordance with the functionality of the metering nozzle with Flair® technology.
    [00029] Figure 3K shows the culmination of this process where all the air that was introduced for layer separation is now removed.
    [00030] Figure 3L shows the final result of this process where now the push pin is hooked back into the hole inside the outer layer and closes the space. However, provided with the layer separation process as shown in Figures 3F-3K, there is a guaranteed separation of the layers during use (bottle (1) s Dispensing nozzle with Flair® technology. need space to be filled with the medium displacement), and thus avoiding the blocking or sealing of the inner layer against the outer layer when air must be rapidly released.
    [00031] Figure 4 represents an example of a preform where both the inner and outer preforms are made of PET, and where the preforms are molded separately and then assembled.
    [00032] The top connection (3) is a hermetic seal made by rotary welding, for example, in an anti-dirt type configuration where dust and the like are controlled. These sample preforms have a wavy neck, and can be used, for example, in homemade draft beer systems.
    [00033] Additionally, as shown in Figure 4, in addition to the inner and outer preforms being joined at the top (3) by rotary welding, they are also joined at the base by a protrusion from the inner layer (8) which is then , flattened. The bottom connection can be made using 2C molding, or, for example, by ultrasonic molding. In addition, a valve can be affixed under the two preforms, as shown on the base of the preform in Figure 4 and in greater detail in the far right image of Figure 5. The valve can be affixed, for example, by rotary welding, or other fastening techniques.
    [00034] Figures 4A to 4D provide additional details of a standard dispensing nozzle type preform with Flair®PET/PET technology shown in Figure 4 (the term “Standard dispensing nozzle” is used in contrast to “Piston dispensing nozzle with Flair® technology” where the upper portion of the inner layer is affixed to the upper portion of the outer layer, so that when its contents are dispensed, the inner layer (8) bends along itself much like a piston). With reference to this, Figure 4A(a) shows a perspective view of the outer layer (9) of the preform and Figure 4A(b) shows a side view with an AA line through which a cross section is taken and presented in Figure 4A(c).
    [00035] Similarly, Figure 4B shows the inner layer (8). Visible at the base is the plug whereby the inner layer (8) will be affixed to the outer layer (9) as shown in Figure 4, and a side view and a cross section through line B-B. Similarly, Figure 4C shows how the inner layer (8) is fitted to the outer layer. This process can be achieved, for example, initially by inserting the inner layer into the outer layer and then by pressing down and rotating welding as if there were a melted area on top (3) of the preforms where the inner layers and external are connected. This is shown in Figure 4C(c) and (d). The connection of the inner layer (8) to the outer layer (9) has to be a hermetic connection. Alternatively, the two layers can be connected by ultrasonic welding, thermal sealing etc., the main requirement is that it be a hermetic connection.
    [00036] Figure 4D shows how the central pin of the inner layer (8) that protrudes through the base of the outer layer (9) can be deformed in order to connect the inner and outer layers. This can be done by deformation of the center pin, or, for example, by deformation through rotary welding, ultrasonic welding, heat sealing, etc. This connection at the base does not have to be hermetic. In fact, when an air supply device is connected to the bottle (1), some of the air will travel through this pin connection in several configuration examples.
    [00037] One Way Valve in Base
    [00038] Figures 4E, 4F and 4G illustrate details of a one-way valve to be used in connection with examples of preforms as described below. As shown in Figure 4E, a first step can be PET injection molding due to the rotary welding connection with the outer layer (9) of the preform, and a second step can be, for example, in soft TPE, not chemically bonded to the PET (but mechanically affixed to the base of the TPE portion as shown in Figure 4F). A soft material can be used for two reasons: (1) good valve seal, and (2) to create a good seal to the air supply device (which connects to the bottom of the TPE portion, for example). As shown in Figure 4G, the one-way valve can be connected to the preform example using rotary welding, ultrasonic welding, gluing, etc.
    [00039] Figure 5 represents an example of a bilayer preform without an air valve, shown separately, and then connected to an air valve. The air valve can be powered, for example, by an apparatus that has a built-in air valve (shown in purple on the base), or it can be attached to the base of the preform as described above, via rotary welding, for example. Alternatively, it can be attached using other connection methods as available, such as ultrasonic welding, bonding, etc. If the air valve housing and the air valve are part of the apparatus into which the bottle (1) (herein shown as a preform) can be inserted, said apparatus can provide the fastening system that seals the bottle ( 1) , as shown in Figure 1.
    [00040] Figures 5A show details of the preform of Figure 5 with and without a power connector or load unit with a pump and air valve. Standard Flair® PET/PP Preforms
    [00041] Figures 6 to 7 represent two stages in the manufacture of an example of preform with bayonet-type connection on its top (3) , and for use with standard dispenser nozzle devices with Flair® technology
    [00042] Here the outer PET preform is molded first, then in a second step the inner preform, made of a polyolefin, eg polypropylene, can be molded. This can be done in a bi-injection molding process, where (Figure 7) the inner preform (blue) is injected into the orifice of the outer preform (grey). Leaving a small protrusion of the inner preform on the outside of the outer preform, becoming attached. Figure 6A shows how the hooks (29) are used to prevent rotation of the inner layer when the bottle (1) is blown and the device is placed or removed by rotation.
    [00043] Thus, in Figure 7, the central image has a circular disk of the protrusion type of the blue inner preform in the center of the base. This disc as a protrusion releases the inner preform to the outer preform at the base. As noted above, this example external preform has a “booster” or pressure regulating mechanism built into its base portion. The mechanism works once the preform is blown into the bottle (1).
    [00044] In connection with Figure 7, it is also noted that the inner layer mentioned here, for example of polypropylene, is used to form the neck of the bottle (1). In this way, it can be overmolded over the neck of the outer preform, and due to the greater shrinkage of the inner PP layer as it cools after being blown, the inner layer (8) seals completely in a "vacuum packaging" effect, over and around the outer layer. Figure 7A shows details of the inner polypropylene layer. Figure 7B highlights its new geometry to achieve a tight, sealed connection between the two layers. To obtain a hermetic connection between the inner and outer layers, the inner layer (8) has to be molded OVER the outer preform. Due to shrinkage, the inner layer (8) after injection molding is not hermetic with the outer layer (9) . However, when the inner layer (8) is OVER the outer layer (9) as shown in Figure 7B, this creates an airtight seal between the two layers after blowing.
    [00045] As shown, for best results the inner layer (8) not only covers a protruding ring (31) of the outer layer (9) , as seen in Figure 7, but alternatively protrudes slightly downwards, placing a ring that covers the outer layer (9) a little farther and below the upper end of the outer layer (9) . Alternative possibilities for this connection may include ultrasonic connection, glue connection, etc.
    [00046] It is this same difference in shrinkage between the inner layer (8) and the outer layer (9) that allows another aspect of a PET/PP - or similar mixture of inner/outer layer materials - for a bottle (1 ) of dosing nozzle with Flair® technology.
    [00047] If, for example, a PET bottle (1) is used with a PP or polyamide bag inside, then after the preforms are blown into an inner layer and an outer layer, and allowed to cool, both the layers will be shrunk. However, the inner bag will shrink further, as noted. In this way, a space develops between the outer PET bottle (1) and, for example, a bag or inner PP layer. It is often desirable to “hot fill” a given liquid in the bottle (1) without having to let it cool down.
    [00048] Hot filling of, for example, juices and seasonings, condiments, etc., involves filling a layer with liquids having temperatures from approximately 80o C to approximately 120o C.
    [00049] These high temperatures allow the filling and simultaneous cleaning of the interiors of the layers. Furthermore, once the liquid is produced in a hot state, it can be bottled (1) and transported, with no requirement for cooling or storage areas for all bottles (1) s until the liquid has cooled and only then filled. them, etc. The aforementioned hot filling of a product in a PET bottle (1) is impossible, because that PET will deform at temperatures below approximately 60o C. However, other materials used for the inner layer (8 ), as well as, for example, polypropylene and other polyolefins, or, for example, various polyamides, do not have this problem. They deform at temperatures usually above 90o C, for example. In this way, said product can be, for example, hot-filled in an inner polypropylene bag made from a preform as shown in Figures 6 to 7, or as in Figure 17. The air between the bottle ( 1) External PET and the internal PP bag in said layer of the Dosing Nozzle type with Flair® technology serves as a thermal insulator, and in this way, for example, the internal PP bag can be filled with hot juices, seasonings, condiments, etc. up to approximately 90o C without any damage to the layer made of eg PET. In exemplary embodiments of the present invention, the exact maximum hot-fill temperature will depend on the shrinkage difference between the two layers, and consequently on the thermal insulation provided by air or other means of displacement between the two layers. In the configuration examples of the present invention, the material from which the inner layer (8) is made, and the level of shrinkage it will undergo relative to the outer layer, and the concomitant maximum temperature of the hot fill that it can withstand, can all be designated for a given application, use or rate of uses, all for the design and manufacture of the appropriate preforms. Flair® PET/PET Standard Preforms - First Outer Layer
    [00050] Figures 8 to 10 represent two stages in the manufacture of an example of a preform made from the same material, such as, for example, a PET/PET preform, according to configuration examples of the present invention. The preform example shown here has a “bayonet” type neck (horizontal recesses provided in the upper portion of the inner layer to join with “latches” or horizontal protrusions from a main or reverse distributor), but the process applies equally to any type of bottleneck. In Figure 8, the outer layer is first molded, for example from PET. Then, in Figure 9, before the second layer, ie the inner layer (8), is molded, especially as the two materials are the same (and thus tend to melt at the same temperature), a non-stick coating (34 ) can be provided on the inner surface of the outer preform. Said coating can be sprayed, for example, offset, or can be provided using other techniques as available or desirable. Figures 8A and 9A show details of these techniques, and represent the "push pin" layer separation device variant of Figures 3A to 3L. It is noted that if one has the same materials for the inner and outer layers of a preform, or has two materials with the same molding temperature, then it may be useful to mold an inner preform first.
    [00051] The advantage is that it is easier to precisely apply the non-stick coating (34) to the inner preform than to the outer preform.
    [00052] Finally, as seen in Figure 10, the inner layer, also made of PET, can be molded.
    [00053] Due to the existence of a non-stick coating (34) between the two layers, they can be separated later once a displacement medium is introduced between them. Figure 10A shows details of the inner layer (8) of said PET/PET preform having the base structures of the type of Figures 3A to 3L.
    [00054] Preforms PET/PET standard dispensing nozzle with 2C Flair® technology - Inner layer (8) First
    [00055] Figures 11 to 14 represent two stages in the manufacture of a PET/PET preform according to examples of alternative configurations of the present invention. Here the inner layer is molded first, as seen in Figure 11. Then, in Figure 12, before the second, ie the outer layer (9), is molded, a non-stick coating (34) is sprayed or applied, affixed or provided on the outer surface of the inner preform. Finally, as seen in Figure 13, the outer layer, also made of PET, can be molded. However, here, because the inner layer (8) is molded first, and has not been provided with an elongated disc protrusion as in the previous case of the PET/PP preform of Figures 6 to 7, a variant means of connecting the two preforms. -joined shapes is required. This is shown, for example, in Figure 14.
    [00056] Figure 14 of this form shows a two-step binding process. First, in Step 1 (left image), a hole can be provided in the inner layer (8) of the inner preform as it is molded. Then, in a Step 2 (right image), when the outer preform is molded, it is provided with a protrusion that protrudes through the inner layer (8) and into the cavity of the inner layer (8), and thus closes the inner preform hole and connects the two preforms.
    [00057] Figure 15 represents an example of preform with a bayonet neck finish according to configuration examples of the present invention. Bayonet-style finishes use horizontal latches that mate with the horizontal recesses, making it easy to turn the dispenser cover for removal. This will be described in more detail below, in connection with Figures 27.
    [00058] Figure 16 represents a 2C molded preform with the pressure regulating device (“booster”) built into the outer layer (9), as described above in connection with Figure 3.
    [00059] Figure 17 represents an example of PET/PP preform with a corrugated neck finish according to configuration examples of the present invention, and Figure 18 represents several views of an example preform with a corrugated neck , with an air valve and a dip tube according to configuration examples of the present invention.
    [00060] Figure 19 represents how an example preform can be blown into various types of bottle (1), with example dimensions provided for illustration. The preform examples according to the configuration examples of the present invention can be blown in various shapes and sizes of bottle (1)s and full-size layers. For example, the base of the bottle (1) can be flat or round. In the illustrated example, a “champagne” or flat bottle base (1) has a width of 55 mm, a corner radius of curvature R4 of 4 mm, and the base of the bottle (1) protrudes vertically 2 mm below the preform base level as shown. PET/PET Piston Preforms First External Layer
    [00061] Figures 20 to 22 represent an example of a process for the 2C molding of a PET/PET preform of the type "Piston metering nozzle with Flair® technology" according to configuration examples of the present invention. A Piston Dosing Nozzle system with Flair® technology uses the union between the internal and external preforms in the upper portion of the preform, thus obtaining the final bottle (1). In this way, as the displacement means is introduced between the layers, the inner layer (8) is pushed towards the main distributor, and folds itself to thus move upwards along the walls of the outer layer, very similar to a piston. The Piston Dispenser Nozzle system with Flair® technology is described in Published Patent Application Number US 2011/0024450, the disclosure of which is incorporated herein by reference. Thus, the non-stick coating (34) is only desirable for the base portion of a "Piston Dosing Nozzle with Flair® technology" preform, as it is desired that the upper portion be joined in such a way as to achieve this piston effect of "folding itself."
    [00062] In this example the outer preform is molded first, and a non-stick coating (34) is applied only to the base portion of the inner/outer interface. Next, the inner preform is molded, with the end result shown in Figure 22, where a non-stick coating (34) is provided between the layers, but only on the base portion of the preform. As noted, if one has 2 of the same materials, or 2 materials with the same molding temperature, then it may be advantageous to mold the inner preform first. In that case it has the advantage that it is easier to precisely deposit a coating on the outer side of the inner preform than on the inner side of an outer preform, as shown here. Preforms Piston PET/PET 2C Standard Flair® First Inner Layer
    [00063] Figures 23 to 25 represent an example of an alternative process for the 2C molding of a PET/PET preform of the type "Bayonet Piston Dosing Nozzle with Flair® technology" according to configuration examples of the present invention. Here the inner preform is molded first, as seen in Figure 23, then, as seen in Figure 24, a non-stick coating (34) is sprayed on the outside of the inner preform. The result, as seen in Figure 25, is the same as the example of Figures 20 to 22, but spraying the non-stick coating (34) from the outside of the inner preform is generally preferable as it is easier to deposit precisely the non-stick coating (34) on the outer side of an inner preform which deposits it on the inner side of an outer preform, as seen in Figure 21, due to the freedom of movement of the spray device/robot in the first case. Preform with One-way Valve
    [00064] Figures 26A to 26H illustrate an example of preform with a one-way valve according to configuration examples of the present invention. With reference to Figure 26A, a cross-section of the preform with valve attached is shown and the same figure is replicated in Figure 26A(b) with an area of detail indicated - Detail A - which will be presented in the following figures. Figures 26A(c) and (d) show side views with the preform arranged vertically and horizontally so that the base appears. Similarly, Figure 26A(e) shows a view of the closed base with two lines A-A and B-B through which the cross sections will be presented.
    [00065] Figure 26B is the enlargement of the Detail A region indicated in Figure 26A(b). Illustrates that to avoid refilling the bottle (1) after use, it is possible to provide the preform with a one-way valve. Said valve can be, for example, a loose flexible plastic plate, such as, for example, an elastomeric disc, TP, or PE captured in a PET valve seat that can be connected to the preform, for example, by rotary welding.
    [00066] Figures 26C to 26E illustrate the function of this one-way valve. As seen with reference to Figure 26C, when there is low pressure in the bottle (1), the two layers separate (with the inner layer (8) and outer layer (9) corresponding to the inner and outer layers of the preforms , as described above) and air can flow in from the ambient air in the base through the one-way valve to allow the Dispensing Nozzle system with Flair® technology to operate (displacement medium between two layers ) as shown by the arrow at the base.
    [00067] Figure 26D shows what happens when the opposite occurs, that is, when there is an overpressure in the bottle (1). Here the air between the layers tries to flow back out of the base (as shown by the base arrow) but the one-way valve blocks the air flow. These principles can be used for the “Squeeze Dosing Nozzle with Flair® Technology” type system, where a user compresses on the outer layer to distribute a liquid from the inner layer, and as this occurs, the low pressure between the layers sucks inside the air through the one-way valve. However, the one-way valve lets air in but does not allow it to escape, thus maintaining inner layer pressure for distribution. Additionally, as shown in Figure 26E, said one-way valve provides an anti-refill functionality. When the bottle (1) is empty and a consumer tries to refill the bottle (1), for example, he finds it impossible to do so, as when the inner layer (8) is refilled, the air between the layers tries to flow back through the one-way valve in the base, but the one-way valve blocks the air flow. Furthermore, the center hole in the valve housing is so small that it is impossible to force the valve open even through a small pin. Even when pushing a small pin in the center, for example, the valve will block the outside air flow unless a user punctures the disc, which makes the device unusable in any event. This makes it impossible to refill the bottle (1), as the pressure between the layers keeps the inner layer (8) in a shrunken position, that is, the one it obtained as it was distributed to the last portion of the fluid or liquid that was contained . Therefore, even if there are several attempts, a consumer does not refill the bottle (1). It is necessary to purchase a replacement bottle (1) and it is clear that this will generate value for the seller, as well as ensuring quality control and preventing re-filling and resale by unauthorized retailers.
    [00068] Figure 26F illustrates how a one-way valve with a layer separation/release button, as described above in connection with Figures 3, operates. When a layer separation/release button is used (as well as when layer release is not achieved with a liner), a one-way valve cannot be connected to the preform prior to blowing the preform into the bottle ( 1), due to the protruding pin which is used in layer separation after blowing. Preferably, the one-way valve has to be rotatably welded to the bottle (1) after the layers are separated by an overpressure, as described above and illustrated with reference to Figures 3. Referring to Figure 26G, after blowing the preform into a bottle (1), the manufacturer must first press the layer separation button (which has already performed its function) and subsequently, as seen in Figure 26H, attach the one-way valve to the bottle (1) blown by rotary welding. Fitting Bottleneck Example
    [00069] Figures 27A to 27C illustrate a snap-on neck finish with 3 locks for the inner layer (8) of the example preform according to exemplary configurations of the present invention. The bayonet finish with 3 locks allows a casing to be attached to the top (3) of the inner layer, which can have a distribution head or a spray head, as appropriate. Figure 27B similarly shows a different angle view of the trim with three latches and Figure 27C illustrates how the three latches are not symmetrical around the perimeter of the neck, but are preferably provided in an asymmetrical arrangement.
    [00070] As shown in Figure 27C, which is a top view of the snap-in neck finish of Figures 27A and 27B, it can easily be seen that there are two latches having approximately 90 degrees between them and each of which is approximately 135 degrees between. its center and the center of the third latch, which is shown on the far left of Figure 27C. The 3-lock configuration of spray heads is described in published US Patent Application US/2010/0018999, which is incorporated herein by reference.
    [00071] In Figures 27A and B, a fitting neck/bayonet finish with 3 locks on the preforms and bottle (1) is shown. The 3-lock version has only ONE position (orientation) that is correct, ie where a cover or distribution head can be fitted to it. It is noted that in combination with bottle (1) flats, such as sprayers, with a defined front portion (nozzle) and a rear portion, which is generally useful as it is easy to properly orient a bottle (1) of the flat type on a filling line so that this single orientation is assigned prior to filling and securing the casing.
    [00072] The UM position is there because the 3 latches are not evenly spaced around the perimeter of the neck, as in (3 X 120), but are preferably spaced with subtended angles of 135o-90o-135o, as noted in the Order US Patent Number 2010/0018999, the disclosure of which is incorporated herein by reference in its entirety.
    [00073] However, this can present a problem regarding the use of round bottle (1) s. In a filling line, for example, as well as after the consumer has performed the refill action, connecting the cap or device to the casing of the (1) round bottle is difficult because there is no easily identifiable orientation (bottle (1) round ). To avoid this issue, a neck finish of a new 4-lock / snap bayonet has been developed, and described below. Four (4) - Bayonet Neck with Latch and Snap Cover
    [00074] In contrast to the bayonet fitting neck finish with three locks, Figures 27D to 27G represent a new bayonet fitting neck finish with 4 locks according to configuration examples of the present invention. Figure 27D shows a front perspective view so that said example bottle (1) with said bayonet neck finish with 4 locks, and Figure 27E illustrates different views of the same bottle (1), the image on the left looking at facing a lock with a steering frame and the image on the right showing a standard lock (vertical bracket on the right and horizontal bar connected to it). Referring to Figure 27D, the bottle finish (1) 4 Latches version has 4 snap/bayonet latches. Two of the locks are provided with inward and outward steering brackets (this type of lock is shown in the image to the left of Figure 27E). In configuration examples of the present invention, two of the four latches being equipped with externally and internally inclined structures are sufficiently functional as well as suitable for molding purposes, since to make 4 latches with outer and inner supports is not possible with two inclinations in a mold. Four slopes and increased complexity would be needed, but they can also be done, for example, in specific cases. Furthermore, as also shown in Figure 27D, in the upper part, for example at 4MM of the finish of the bottle (1), supports are not allowed; on the other hand, pit marks may occur on the inner sealing surface, and to obtain a tight seal, a cap needs some interior vertical space so that the top (3) of the cap fits snugly into the top (3) of the neck.
    [00075] Figure 27F shows a top view of the fitting neck finish where four locks can be seen symmetrically provided with 90 degrees between their centers around the bottle neck parameter (1). The locks at the top (3) and bottom of the figure have the inner and outer steering structures, and those at 3 and 9 o'clock (right and left) have only flat locks. In this way, one can exploit these symmetries and not necessarily align a distribution head or a spray head or similar cap in any particular case of orientation to the neck, as was required with the 3-lock system above. Figure 27G shows that an inward routing for a snap hook and snap top cover (no rotation, just pressing down) is also possible, where an assembly line, for example, when aligning the cover or cover above the four latches and simply press down, the hooks (29) on the lid, each sliding down to engage the latch groove (below the horizontal bar), as opposed to using the inner drive to guide in a rotational direction and lock onto the latches that way. However, the bottle (1) must be correctly aligned for such a method of fixing the hook (without rotation), which requires greater precision and complexity.
    [00076] Figures 27H and 27I illustrate an example of a lid or cover arranged that joins the 4 latches on the bottle neck (1), according to configuration examples of the present invention. Said cap has four identical bayonet-type snap-on hooks (29) that attach to the four neck locking bayonets as shown in Figures 27D through 27G. With reference to Figures 27H, there is a side view of an example snap-on cap and in each of these views a line is drawn through which a cross section will be presented.
    [00077] The cross section through the AA line shows that the cover has four identical bayonet hooks (29), and similarly, the cross section through the BB line illustrates what it looks like when a slice is cut between any two latches, essentially separating the 90 degree angle between them. Similarly, Figure 27l shows perspective drawings of the bayonet snap-on cap with 4 latches. Figure 27I shows the principle of fixing the four-lock bayonet cover of Figures 27H and I on a bottle (1) of the Dosing Spout type provided with a four-lock neck finish, as described above. As can be seen with reference to Figure 27J, which shows cross-sectional views of a said example cap, the cap can be attached to the neck from any of four equivalent positions simply by making a downward vertical movement and a radial movement. The vertical movement presses the lid into alignment so that each of the bayonet snap hooks (29) is fitted somewhere between two adjacent latches and a radial or twisting motion locks each of them into its corresponding latch. The hooks (29) attach below the vertical bar of each latch, after being guided down to the appropriate vertical level by the guiding structures of the two supports. Due to symmetry, as shown in Figure 27F, there are four orientations with which a cap can be initially mounted, all resulting in the four-lock bayonet cap being properly secured with each cap hook joined to a corresponding cap on the neck. Figures 27K, L and M are enlarged views of each of the images in Figure 27J for ease of verification.
    [00078] Figure 27N illustrates an example of a cap being attached to a neck. In Figure 27N(a), a lid hook is guided on the left by the underside of an interior steering frame, and in Figure 27N(b) it is secured between the two vertical latch brackets.
    [00079] Figure 27O illustrates characteristics of the "end support" on each latch (left side of the latch in each figure) and the "rollback bracket" (right side of each latch) on two of the latches (those with the steering structures interior). The end bracket prevents a lid from turning too much, and the anti-rollback bracket creates the minimum amount of force needed to remove the lid. To remove the cover, that is, to turn it counterclockwise, the hook must be pushed over and through the anti-rollback support, which requires some force to do it. As can be seen, the end bracket protrudes more radially outward than the rollback bracket, so a user cannot turn more clockwise when passing this barrier. Figure 27P, showing a cross section through two latches and hooks (29) (spaced 180 degrees apart) of a lid attached to a neck, illustrates the principle of the bayonet lid with four latches as described above, showing the interconnection of the hooks (29) of the cover with the neck latches, positioned below the horizontal bar of each latch. It is also noted that the represented neck has an overmolding feature of the inner layer over the outer layer, as shown in Figure 7B above. Figures 27Q, R and S illustrate more details of the snapping principle. Figure 27Q shows on its top panel how those lines above the cap and four identical positions are possible (between the latches in any relative orientation of the lid and bottle neck (1). Figure 27R shows how the horizontal portions of the latches are tilted vertically they can be used as vertical interior steering frames for a simple snap-in fixture (without turning), but in this case one must align the cover so that the four hooks (29) are on the right over the 4 latches. Finally, Figure 28TR illustrates an example of the cap and the bottle neck (1) where the fit has been completed. When a consumer removes the cap by turning it counterclockwise, the cap can be replaced according to the bayonet principle as illustrated above , that is, it can be removed and replaced repeatedly.
    [00080] Figure 27U illustrates the case where the lid is desired to be irrevocably attached, so that a user does not remove it and fill it with contents by himself. In order to create a removable snap-in connection between the bottle (1) and the device, the two anti-rollback brackets of the normal latching configuration of Figures 27S and 27T (said anti-rollback brackets being provided on the two latches with inward direction structures) must be increased in diameter (that is, in its radial external protrusion), to equal the radial external protrusion of the end brackets, so that when the device's snap hook is secured in place between the brackets, it is not possible to rotate the device to remove it. lo (after passing the end brackets, it is not possible to rotate; the non-removable snap-on connection simply extends this feature to the anti-rollback bracket as well). Matching Preform to Blow Heating Profiles
    [00081] As noted above, in several configuration examples of the present invention, a preform is generally made using different materials for the inner layer (8) and the outer layer (9) However, this presents a technical problem, in those different materials, eg PET and PP, have different blowing temperature rates to achieve said blowing. As described above, after being molded, a preform is then blown into its final shape to be used in a bottle (1) of the dispensing spout type with Flair® technology. Furthermore, both the inner preform and the outer preform are blown together. In order to achieve the blowing process as in both the inner and outer layers, one must blow completely to its final shape, the blowing temperatures of both layers need to be closely matched.
    [00082] Figures 28 illustrate details of this process and the proper correspondence of the materials of an example of inner layer and outer layer. Referring to Figure 28A, an example preform is shown, rotating inside a heating oven so that it is ready to be blown into a bottle (1). The preform example has an outer layer (9) of Material “A”, PET, for example, and an inner layer (8) of Material “B”, polypropylene, for example. In general, each type of material has its own ideal temperature, which is a function of its plasticization and heat transfer profile. As seen in Figure 28A, heat for the inner layer must reach through the outer layer as the preform is placed inside a heating oven. Thus, as seen, the heating elements 2810 are outside the outer layer. In this way, to reach the ideal blowing temperature for the outer layer, one can adjust the intensity of the heating elements and the heat transfer speed of the heating oven, but this ideal setting for the outer layer usually does not provide the temperature of Ideal blow for the inner layer (8), especially when the inner layer is made of another kind of material than the outer layer.
    [00083] Figure 28B illustrates why it is so crucial to optimize the blowing temperatures of the inner and outer layers. Figure 28B represents a fully blown bottle (1), and a detail of the base corners, for an example of a preform like that shown in Figures 7A, above. For blowing the bottle (1) into the given shape, both layers must be completely blown. If the inner layer (8) is not completely stretched to the shape of the outer corner, the outer layer (9) will also not achieve its intended shape due to the fact that the bottle (1) is blown from the inside out. This phenomenon will happen if the temperature of the inner layer (8) is too low. On the other hand, if the temperature of the inner layer is too high, both layers can assume the desired shape, but the cycle time of the blowing process will increase significantly. As a result, the inner layer (8) must be cooled down enough so that it does not pull back due to shrinkage.
    [00084] A temperature that is too high can also easily cause other blow failures.
    [00085] Finally, Figure 28C represents a comparison of ideal blowing temperatures for two examples of materials used, respectively, as the outer layer (9) and the inner layer (8) of a preform. Their respective plasticizations and heat transfer profiles are adjusted with varying temperatures. Here the outer layer (9) is Material “A”, and the inner layer (8) is Material “B”. As can be seen from the graph in Figure 28C, Material A has a wider ideal temperature range for blowing, (although it has a greater slope). Material B has a very limited ideal temperature rate, and thus correspondingly limited range during which it is within that rate.
    [00086] Through the use of different colors and/or additives in the inner (8) and/or outer layer, it is possible to achieve the ideal plasticizing profiles for blowing an assembly of an example preform that is made of two materials many different. For example, adding a black or brown pigment to Material “B” and a white to Material “A” will cause less heat absorption for the latter, and more for the former. Other additives can also affect temperature rates for plasticization and heat transfer properties. This can also be done, alternatively, by using a coating between the two layers, via surface treatment by nanotechnology, and/or by changing the molecular structure using nanotechnology.
    [00087] Figure 28D represents a said modification, where Material "B" has now been modified so that its plastification region (and thus its ideal rate of blowing temperatures) is within the plastification region (and thus the optimal rate of blowing temperatures) of Material “A”.
    [00088] For example, PET has a higher plasticization temperature than PP and other polyolefins. Therefore, for blowing a preform made of an outer layer (9) of PET and an inner layer (8) of PP (polypropylene), this can be a significant incompatibility. By adding a black or brown color to PP and a white color to PET, said brown/black absorbs approximately 70% more heat than white, one can increase and raise the temperature rate of PP, and lower that of the PET, so there will be a temperature range, as seen in Figure 28D, within which both layers can ideally be blown. Of course, if one wishes to adjust the blowing temperature at the center of the available temperature range so that given a Gaussian distribution curve, for example, or preforms and/or areas within them, as many preforms as possible are placed completely within the rate, and the blow will succeed.
    [00089] Thus, in configuration examples of the present invention, to achieve a wide process window during the blowing process, the plasticization curves of the preform layers that can be made of different materials and can be changed. Once said change is effected, a multilayer preform can be blown as if it were composed of a material.
    [00090] It is further noted that in several configuration examples, there may be three or even more layers for a preform. In that case, all three layers, or all N, for an N preform layer, need to be adjusted so that there is a blow temperature rate, which is common to all three, or all N, as the case may be, the materials comprising the various layers.
    [00091] The above description and figures are intended by way of example only and none are intended to limit the present invention in any respect except as set out in the following claims. It is particularly noted that professionals in the prior art can readily combine the various technical aspects of the various configuration examples described.
    权利要求:
    Claims (14)
    [0001]
    1 .- "PREFORM FOR A LIQUID DISTRIBUTION APPLIANCE" of the bag-in-the-bag type, comprising an inner layer (8) and an outer layer (9) where said inner and outer layers (8, 9) are made by bi-injection molding process, and being sealed and connected in a lower portion (11) and an upper portion (18) of said preform (2), the layers connected in the lower portion (11) by a protrusion (14) from an inner layer (8) that protrudes through an opening in the outer layer (9) and deformed so as to connect the layers, characterized in that the outer layer (9) is molded first, a hole is left in the center of the bottom of the outer layer (9) and the inner layer (8) being molded by the process of injection into said hole, said outer layer (9) includes an air inlet (12) or vent hole (17) at its lower portion, said air inlet (12) or vent hole (17) being spaced from the opening (12) through through which the protrusion (14) protrudes, and both the inner and outer layers (8, 9) are provided with an integrally molded lower pressure relief extending below the lower portion (11) of the outer layer (9) adjacent to the opening through which the protrusion (14) protrudes so that when the pressure release button is pressed, said pressure release button pulls up the inner layer (8) and any pressure between the inner and outer layers ( 8, 9) is released.
    [0002]
    two . "PREFORM" according to claim 1, characterized in that the lower portion (11) of the outer layer (9) has a U-shaped slit (10) having an apex, and where the pressure release button is an impeller ( 13) arranged on a vertex.
    [0003]
    3 . "PREFORM" according to claim 1, characterized in that the pressure release button forms part of an inner layer (8) and projects through an opening in the lower portion (11) of the outer layer (9) close to said orifice ventilation (17).
    [0004]
    4.- "PREFORM" according to claim 1, characterized in that the inner layer (8) and the outer layer (9) are both made of the same material or of different materials.
    [0005]
    5.- "PREFORM" according to claim 4, characterized in that the inner and outer layers (8, 9) are made of PET or that the inner layer (8) is made of PET and the outer layer (9) is made of polyolefin or the inner layer (8) is made of polyolefin and the outer layer (9) is made of PET.
    [0006]
    6. A "PREFORM" according to claim 4 or claim 5 characterized in that said inner layer (8) is made from polyolefin and polyamide.
    [0007]
    7.- "PREFORM" according to any one of the preceding claims, characterized in that said two layers (8, 9) are of the same material, or have substantially the same molding temperature and where a non-stick coating (34) is applied to at least a portion of said first layer which will be molded prior to molding the other layer.
    [0008]
    "PREFORM" according to claim 7, characterized in that said non-stick coating (34) is applied inside said outer layer (9).
    [0009]
    9. "PREFORM" according to claim 8, characterized in that said non-stick coating (34) is applied only on a lower portion (11) of said first preform (2) that will be molded.
    [0010]
    10.- "PREFORM" according to any one of the preceding claims, characterized in that said inner layer (8) and said outer layer (9) are joined at the neck (18) and the lower surface (11) at the conclusion of the bi-injection molding process.
    [0011]
    11.- "PREFORM" according to any one of the preceding claims, characterized in that the inner layer (8) is arranged to reduce a defined percentage in relation to the outer layer (9).
    [0012]
    12.- "PREFORM" according to claim 1, characterized in that the valve is connected or is connectable to the outer layer (9), said valve (24) covers the pressure release button in its pressed state.
    [0013]
    13.- "PREFORM" according to claim 12, characterized in that it comprises one of the connection forms, welded by rotation, welded ultrasonically, or glued between the valve (24) and the outer layer (9).
    [0014]
    14.- "PREFORM" according to claim 12 or claim 13, characterized in that the valve (24) includes a seat valve (25) connected or connectable to the outer layer (9) and a loose plate (26) of flexible plastic between the seat valve (25) and the outer layer (9).
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    同族专利:
    公开号 | 公开日
    RU2016131254A3|2019-09-06|
    EP3441208A1|2019-02-13|
    JP2017140841A|2017-08-17|
    AU2011343417A1|2013-08-01|
    JP2019130915A|2019-08-08|
    CN107972203B|2021-03-12|
    CN107972203A|2018-05-01|
    MX2013006935A|2014-05-27|
    US20120187067A1|2012-07-26|
    AU2019222784B2|2022-01-06|
    RU2013132967A|2015-01-27|
    AU2017202776A1|2017-05-18|
    RU2016131254A|2018-12-07|
    RU2764229C2|2022-01-14|
    ES2704670T3|2019-03-19|
    RU2596745C2|2016-09-10|
    BR112013015059A2|2016-08-09|
    US20210276223A1|2021-09-09|
    CN103459111B|2017-10-31|
    WO2012083310A2|2012-06-21|
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    JP2014503388A|2014-02-13|
    AU2019222784A1|2019-09-12|
    WO2012083310A3|2012-11-01|
    CN103459111A|2013-12-18|
    EP2651613A2|2013-10-23|
    EP3441209A1|2019-02-13|
    US10894340B2|2021-01-19|
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    PL2651613T3|2019-05-31|
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    法律状态:
    2018-04-03| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-08-20| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-02-27| B07A| Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]|
    2020-09-01| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-09-01| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: B29B 11/14 , B29C 49/28 , B29C 49/06 Ipc: B65D 90/04 (2006.01), B65B 5/02 (2006.01), B65B 43 |
    2021-03-09| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2021-06-15| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-07-20| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 19/12/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201061459712P| true| 2010-12-17|2010-12-17|
    PCT/US2011/065940|WO2012083310A2|2010-12-17|2011-12-19|Improved pre-forms for flair applications|
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