• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    system for simultaneously forming and filling a container apparatus and method for simultaneously forming and filling a plastic container are provided. a mold cavity defines an internal surface and is adapted to accept a preform. a pressure source is a servo motor system that includes an inlet. the servo motor system is operable to extract liquid through the inlet and propelled in the preform. a blowing nozzle can be adapted to receive the liquid from the pressure source and transfer the high pressure liquid to the preform, thereby impelling the preform to expand towards the inner surface of the mold cavity and create a resulting container . the liquid remains inside the container as a final product.
    公开号:BR112013010947B1
    申请号:R112013010947-5
    申请日:2011-10-03
    公开日:2020-03-10
    发明作者:David Andison
    申请人:Amcor Limited；
    IPC主号:
    专利说明:

    "SYSTEM FOR SIMULTANEOUSLY FORMING AND FILLING A CONTAINER" CROSS REFERENCE TO RELATED ORDERS
    [0001] This application claims priority for United States Patent Application No. 12 / 906,275, filed on October 18, 2010, which is partly a continuation of United States Patent Application No. 12 / 701,925, which was filed on February 8, 2010. United States Patent Application No. 12 / 01,925 is a division of United States Patent Application 11 / 786,736, which was filed on April 12, 2007, which claims the benefit of United States Provisional Application No. 60 / 791,954, which was filed on April 13, 2006. All statements of each of the above applications are incorporated herein by reference.
    Field of the Invention [0002] The present invention, in general, relates to an apparatus and a method for forming and filling a plastic container. More specifically, this exhibition refers to an apparatus and a method for simultaneously forming and filling a plastic container.
    Background of the Invention [0003] This section provides basic information related to the present invention, which is not necessarily a prior art.
    [0004] As a result of environmental and other concerns, plastic containers, more specifically, polyester and even more specifically polyethylene terephthalate (PET) containers are now being used now more than ever to pack various products previously supplied in containers of glass. Manufacturers and filling centers, as well as consumers, have recognized that PET containers are light, inexpensive, recyclable and produced in large quantities.
    [0005] Blow molded plastic containers have become common in the packaging of numerous products. PET is a crystallizable polymer, which means that it is available in an amorphous or semi-crystalline form. The ability of a PET container to maintain its material integrity refers to the percentage of the PET container in crystalline form, also known as the "crystallinity" of the PET container. The following equation defines the percentage of crystallinity as a fraction of volume: where p is the density of the PET material; pa is the density of pure amorphous PET material (1,333 g / cc); and pc is the density of pure crystalline material (1.455 g / cc). Once the container has been blown, a product can be placed in the container.
    [0006] Traditional blow molding and filling have been developed as two independent processes, in many cases operated by different companies. In order to make filling the bottle more cost effective, some fillers have changed the internal blow molding, in many cases by integrating blow molders directly into their filling lines. Equipment manufacturers have recognized this advantage and are selling "integrated" systems, which are designed to ensure that the blow molder and filler are fully synchronized. Despite efforts to bring the two processes together, blow molding and filling remain two separate, independent processes. As a result, significant costs can be incurred when these two processes are carried out separately. Thus, there is a need for a hydraulic or liquid blow molding system, suitable for forming and filling a container in a single operation.
    Summary of the Invention [0007] This section provides a general summary of the invention and is not a comprehensive statement of its full scope or all of its features.
    [0008] Consequently, the present invention provides a system and method for using the final liquid product to transmit the required pressure in order to expand a heated preform and take the form of a mold, thus simultaneously forming and filling the container.
    [0009] In one example, the system includes a mold cavity defining an internal surface and adapted to accept a preform. The system also includes a pressure source having an inlet, a filling cylinder and a piston-like device. The piston-like device is movable within the filling cylinder in a first direction so that liquid is sucked into the filling cylinder through the inlet and in a second direction, so that the liquid is propelled towards the preform . A blow nozzle can be adapted to receive the liquid from the pressure source and transfer the high pressure liquid to the preform, thereby impelling the preform to expand towards the inner surface of the mold cavity and create a resulting container. The liquid remains inside the container as a final product.
    [0010] Other areas of applicability will become evident from the description provided here. The description and specific examples in this summary are intended for illustration purposes only and are not intended to limit the scope of this exhibition.
    Brief Description of the Figures [0011] The drawings described here are for illustrative purposes only of selected embodiments and not of all possible implementations and are not intended to limit the scope of the present invention.
    [0012] Figure 1 is a schematic representation of a heated preform passed through a mold station in which a pressure source, including a piston-like device begins to move upwards, aspirating liquid to the pressure source of according to the teachings of the present exhibition.
    [0013] Figure 2 is a schematic representation of the system illustrated in figure 1, in which the mold halves close around the preform and the liquid continues to accumulate in the pressure source.
    [0014] Figure 3 is a schematic representation of the system illustrated in figure 2, in which a stretching rod extends in the preform to start the mechanical stretching and in which fluid continues to accumulate in the pressure source.
    [0015] Figure 4 is a schematic representation of the system of figure 3, in which the stretching rod stretches the preform and in which fluid has accumulated completely in the pressure source.
    [0016] Figure 5 is a schematic representation of the system in Figure 4, in which the piston-like device drives the liquid from the pressure source into the preform, thereby expanding the preform towards the cavity walls. mold.
    [0017] Figure 6 is a schematic representation of the system in Figure 5 in which the piston-like device has been completely actuated, thereby completely transferring an appropriate volume of liquid to the newly formed container and in which the drawing rod is removed.
    [0018] Figure 7 is a schematic representation of the system in Figure 6, in which the mold halves separate and the piston-like device begins to draw liquid into the pressure source in preparation for the next cycle; and [0019] Figure 8 is a schematic representation of a heated preform passed to a mold station, in which a pressure source, including a servo motor system, in accordance with the teachings of the present exhibition.
    [0020] Corresponding reference numbers indicate corresponding parts for all the different views of the drawings.
    Detailed Description of the Invention [0021] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. Exemplary embodiments are provided, so that this exhibition will be complete and will transmit entirely the scope to those skilled in the art. Numerous specific details are presented, such as examples of specific components, devices and methods, to provide a complete understanding of embodiments of the present exhibition. It will be evident to those skilled in the art that specific details need not be employed, that exemplary embodiments can be incorporated in many different ways and that they should not be interpreted in a way that limits the scope of the exhibition.
    [0022] The terminology used here is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. As used herein, the singular forms "one", "one" and "o / a" may be intended to include different forms, equally, unless the context indicates otherwise. The terms "comprises", "comprising", "including" and "having" are inclusive and therefore specify the presence of cited features, integers, steps, operations, elements and / or components, but do not prevent the presence or addition of one or more other characteristics, integers, steps, operations, elements, components and / or their groups. The steps of the method, processes and operations described herein should not be constructed, as necessarily requiring their performance in the particular order discussed or illustrated, unless specifically identified as a performance order. It must also be understood that additional or alternative steps can be employed.
    [0023] When an element or layer is referred to as "over", "fitted with", "connected to" or "coupled to" another element or layer or intervening elements or layers may be present. In contrast, when an element is referred to as "directly over", or "directly docked with", or "directly connected to" or "directly attached to" another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a similar way (for example, "between" versus "directly between", "adjacent" versus "directly adjacent", etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated related items.
    [0024] Although the terms first, second, third, etc. can be used here to describe various elements, components, regions, layers and / or sections, those elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be used only to distinguish an element, component, region, layer or section from another region, layer or section. Terms, such as "first", "second" and other numeric terms, when used here, do not imply a sequence or order, unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be called a second element, component, region, layer or section, without departing from the teachings of the exemplary embodiments.
    [0025] Spatially relative terms, such as "internal", "external", "below", "below", "lower", "above", "upper" and the like, can be used here for ease of description in order to describe an element or relation of characteristics to another element (s) or resource (s), as illustrated in the figures. Spatially relative terms may be intended to involve orientations other than the device in use or operation in addition to the orientation represented in the figures. For example, if the device in the figures is flipped, elements described as "below" or "below" other elements or resources, then they will be oriented "above" other elements or resources. In this way, the example term “below” can involve both a top and bottom orientation. The device, otherwise, can be oriented (rotated 90 degrees or in other orientations) and the spatially related descriptions used herein interpreted, as a result.
    [0026] With reference to all figures, a molding station according to the present teachings is shown and, in general, referred to as reference numeral 10. Figures 1 to 7 show an exemplary sequence according to the present teachings . As will be appreciated from the following description, the molding station 10 and the associated method use a final liquid product L to transmit the pressure required to expand a heated preform 12 to take the form of a mold, thereby forming and simultaneously filling the resulting container C (figure 7).
    [0027] With initial reference to figure 1, the molding station 10 will be described in more detail. The molding station 10 generally includes a mold cavity 16, a pressure source 20, a blow nozzle 22 and a drawing rod 26. The exemplary mold cavity 16 includes mold halves 30, 32, which cooperate to define an internal surface 34, corresponding to a desired external profile of a blown container. The mold cavity 16 can be moved from an open position (figure 1) to a closed position (figure 2), so that a support ring 38 of the preform 12 is captured at an upper end of the mold cavity 16. Preform 12 can be formed of a polyester material, such as polyethylene terephthalate (PET), having a shape well known to those skilled in the art, similar to a test tube with a generally cylindrical cross section and a length that typically approaches fifty percent (50%) of the height of the resulting container C. The support ring 38 can be used to transport or guide the preform 12 through and at various stages of manufacture. For example, preform 12 can be driven by support ring 38, support ring 38 can be used to assist in positioning preform 12 in mold cavity 16 or an end consumer can use support ring 38 to drive the plastic container C once manufactured.
    [0028] In one example, the pressure source 20 may be in the form, but not limited to, of a cylinder, tube or filling chamber 42 which, in general, includes a piston-like mechanical device 40, including, but not limited to, limited to a piston, a pump (such as a hydraulic pump) or any other similarly suitable device, movable within the cylinder, tube or filling chamber 42. Pressure source 20 has an inlet 46 to accept liquid product L and a outlet 48 to deliver liquid product L to the blowing nozzle 22. It is appreciated that inlet 46 and outlet 48 may have valves incorporated therein. The piston-like device 40 can be movable in a first direction (upwards, as seen in the figures) to draw liquid product L from inlet 46 into the cylinder, tube or filling chamber 42 and in a second direction (downwards, as seen in the figures) to distribute the liquid product L from the cylinder, tube or filling chamber 42 to the blowing nozzle 22. The piston-like device 40 can be movable by any suitable method, such as pneumatically, mechanically or hydraulically, by example. Inlet 46 of pressure source 20 can be connected, such as via piping or piping, to a reservoir or container (not shown) containing the final liquid product L. It is appreciated that the pressure source 20 can be configured differently.
    [0029] The blowing nozzle 22 generally defines an inlet 50 to accept liquid product L from outlet 48 of pressure source 20 and an outlet 56 (figure 1) to distribute liquid product L in the preform 12. It is appreciated that the outlet 56 can define a shape complementary to the preform 12 near the support ring 38 so that the blowing nozzle 22 can easily correspond with the preform 12 during the forming / filling process . In one example, the blowing nozzle 22 can define an opening 58 to slide the drawing rod 26 used to initiate the mechanical drawing of the preform 12.
    [0030] In one example, the liquid product L can be introduced into the plastic container C during a thermal process, typically a hot fill process. For hot-fill bottling applications, bottlers generally fill the plastic container C with a liquid or product at an elevated temperature between approximately 85 ° C to 96 ° C (approximately 185 ° F to 205 ° F) and seal the plastic container C with a closure (not shown) before cooling. In one configuration, the liquid can be circulated continuously inside the cylinder, tube or filling chamber 42 through inlet 46 through which the liquid can be heated to a predefined temperature (ie, in a heat source (not shown) upstream of entry 46). In addition, the plastic container C can be suitable for other high temperature pasteurization or retort filling processes, or other thermal processes, as well. In another example, the liquid product L can be introduced into the plastic container C at room or cold temperatures. As a result, for example, the plastic container C can be filled at ambient or cold temperatures, such as between approximately 0 ° C to 32 ° C (approximately 32 ° F to 90 ° F), and more preferably at, approximately 4.4 ° C (approximately, 40 ° F).
    [0031] With reference now to all figures, an exemplary method of simultaneously forming and filling the plastic container C will be described. At the outlet, preform 12 can be placed in mold cavity 16. In one example, a machine (not shown) places preform 12 heated to a temperature between approximately 88 ° C to 121 ° C (approximately , 190 ° F to 250 ° F), in the mold cavity 16. Since the preform 12 is located in the mold cavity 16, the piston-like device 40 of the pressure source 20 can begin to suck the liquid product L for the cylinder, tube or filling chamber 42 through inlet 46. The mold halves 30, 32 of the mold cavity 16 can then close, thus capturing the preform 12 (figure 2). The blowing nozzle 22 can form a seal on a preform finish 12. The mold cavity 16 can be heated to a temperature between approximately 93 ° C to 177 ° C (approximately 250 ° F to 350 ° F ) in order to transmit increased levels of crystallinity within the resulting container C. In another example, the mold cavity 16 can be provided at room or cold temperatures, between approximately 0 ° C to 32 ° C (approximately 32 ° F to 90 ° F). The liquid product L can continue to be sucked into the cylinder, tube or filling chamber 42 by the piston-like device 40.
    [0032] Now returning to figure 3, the stretching rod 26 can extend in the preform 12 to start the mechanical stretching. At that point, the liquid product L can continue to be sucked into the cylinder, tube or filling chamber 42. With reference to figure 4, the drawing rod 26 continues to stretch the preform 12, thus, tapering the side walls of the preform 12. The volume of liquid product L in the cylinder, tube or filling chamber 42 may increase until the appropriate volume, suitable for forming and filling the resulting container C, is reached. At that point, a valve arranged at the inlet 46 of the pressure source 20 can be closed.
    [0033] With specific reference to figure 5, the piston-like device 40 can start the actuation downwards (actuation phase) to initiate the rapid transfer of liquid product L from the cylinder, tube or filling chamber 42 to the preform 12. Again, the piston-like device 40 can be actuated by any suitable means, such as pneumatic, mechanical and / or hydraulic pressure. In one example, the hydraulic pressure within preform 12 can reach between approximately 689.4757 KPa to 4,136.8542 KPa (100 PSI to 600 PSI). The liquid product L causes the preform 12 to expand towards the inner surface 34 of the mold cavity 16. Residual air can be vented through a passage 70 defined in the drawing rod 26 (figure 5). As shown in figure 6, the piston-like device 40 has completed its actuation phase, thereby transferring, entirely, the appropriate volume of liquid product L to the newly formed plastic container C. Then, the drawing rod 26 can be removed from the mold cavity 16, while continuing to ventilate residual air. The drawing rod 26 can be designed to displace a predetermined volume of liquid product L, when it is removed from the mold cavity 16, thereby allowing the desired level of filling of liquid product L within the resulting plastic container C and / or the desired free space. In general, the desired level of filling and / or free space will correspond or be close to the level of the support ring 38 of the plastic container C.
    [0034] Alternatively, the liquid product L can be provided at a constant pressure or at different pressures during the molding cycle. For example, during axial stretching of preform 12, liquid product L can be provided at a pressure that is less than the pressure applied, when preform 12 is blown substantially in accordance with the inner surface 34 of the cavity mold 16, defining the final configuration of the plastic container. This lower pressure P1 can be ambient or higher than ambient, but lower than the subsequent high pressure P2. The preform 12 is stretched axially in the mold cavity 16 to a length that approximates the final length of the resulting plastic container C. During or exactly after the stretching of the preform 12, the preform 12 is expanded, in general, radially outwards, under the low pressure P1. This low pressure P1 is preferably in the range of approximately 689.4757 KPa to 1.034.21355 KPa (100 PSI to 150 PSI) and can be maintained for a predetermined amount of time, such as 0.1 to 0, 2 seconds. Subsequently, the preform 12 is further expanded under the high pressure P2, so that the preform 12 contacts the inner surface 34 of the mold halves 30, 32, thereby forming the resulting plastic container C. Preferably, the high pressure P2 is in the range of approximately 3,447.3785 KPa to 4,136.8542 KPa (500 PSI to 600 PSI) and can be maintained for a predetermined amount of time, such as 0.1 to 0.2 seconds. As a result of the above method, the base and contact ring of the resulting plastic container C are formed completely circumferentially.
    [0035] Optionally, more than one piston-like device 40 can be employed during the formation of the resulting plastic container C. For example, a primary piston-like device can be used to generate the low pressure Px to initially expand preform 12, while a secondary piston-like device can be used to generate the subsequent high pressure P2 to expand further the preform 12, so that the preform 12 contacts the inner surface 34 of the mold halves 30, 32, thus forming the resulting plastic container C.
    [0036] With reference to figure 7, the filling cycle is shown completed. The mold halves 30, 32 can separate and the blowing nozzle 22 can be removed. The resulting full plastic container C is now ready for post-formation steps, such as capping, labeling and packaging. At that point, the piston-like device 40 can begin the next cycle by aspirating liquid product L through inlet 46 of pressure source 20, in preparation for the next forming / filling cycle. Although not shown specifically, it is appreciated that the molding station 10 can include a controller for communicating signals to the various components. In this way, components such as, but not limited to, the mold cavity 16, the blowing nozzle 22, the drawing rod 26, the piston-like device 40 and various valves can operate according to a signal communicated by the controller. It is also considered that the controller can be used to adjust various parameters associated with these components according to a given application.
    [0037] It should be appreciated that, in some embodiments, a mobile filling cylinder, tube or chamber may not provide sufficient space optimization or installation efficiency. In addition, in some embodiments, it may be difficult to obtain and / or route pressurized air or liquid from a first location to the molding location of the preform.
    [0038] Therefore, in other examples, the pressure source 20 may be in the form of a servo system 60, which, in general, includes one or more servo motors 62 being actuated by one or more controllers 64 via a line 66. The servo system 60 can be positioned adjacent to the molding location of the preform. The servo system 60 can comprise inlet 46 to accept liquid product L and outlet 48 to deliver liquid product L to the blowing nozzle 22. Servo motor 62 can be operable in a first direction for aspirating liquid product L from the inlet 46 and distribute the liquid product L from the outlet 48 to the blowing nozzle 22 (i.e., direct flow). The servo motor 62, in some embodiments, can also be operable in a second direction to aspirate liquid product L from outlet 48, blowing nozzle 22 and / or preform 12 (ie, reverse flow), which will be discussed here in more detail.
    [0039] In some embodiments, the servo motor 62 can be used to overcome some of the difficulties in the precise measurement and / or minute quantities of product L. That is, the servo motor 62 is controlled, precisely and variably, to allow the measurement needs a throughput of product L and at a variable rate. This precise and variable control can be coupled with a feedback link to provide active, real-time monitoring and control of the filling process, including interrupting the filling process in the event of a detected problem, such as an explosion. In this way, the feedback link can be formed as part of controller 64, with appropriate sensors, arranged in any of a number of locations, providing sufficient data to detect a relevant parameter (for example, pressure sensors, flow sensors, shape sensors and the like). As active control of pressures and the amount of product flow L is often important for the final product formed, the use of the servo system 60 is particularly well suited to provide these benefits.
    [0040] It should be recognized that the servo system 60 may require less electricity to operate, thus providing additional benefits in terms of reduced electrical consumption and cost.
    [0041] As discussed here, in some embodiments, it is desirable to create a reduced level of product L in the completed container (i.e., free space). This free space is used to prevent spillage during handling and to allow the container to be formed slightly larger than its filling. In some embodiments, to create a free space, the servo system 60 can be actuated in the described reverse flow direction, to remove a measured amount of product L from the container, after molding, so that a larger container can be formed with a less liquid left in it.
    [0042] It should also be recognized that, in some embodiments, after the pressure source 20 is turned off, a gap of product L or volume of product L is located between the pressure source 20 and the inlet of the container. It is desirable, in some cases, to manage and / or maintain this clearance of product L to prevent unwanted overflow from the container or spillage. Again, the use of a servo system 60 in a reverse flow direction can be used to remove this slack of product L to prevent or at least minimize these problems.
    [0043] In addition, the use of the servo system 60 in a reverse flow direction can be used to define a vacuum within the container. The force of the vacuum inside the container can cause the walls of the container to fold inward, thus disengaging the container from the inner surface 34 of the mold cavity 16 and, finally, allowing for faster depressurization of the filling lines to reduce the amount of flow of product L into the tank, via any valve system.
    [0044] Due to the fast cycle time required for use with the servo system 60, a single servo filling unit could be used to mold and fill multiple preforms 12 simultaneously or almost simultaneously, without sacrificing control over volumes and curves. filling pressure. As a result, this can be used to reduce the number of controls, the number of servo systems needed, thereby reducing costs and installation space required for manufacturing. In addition, maintenance reductions can be made.
    [0045] Specifically, in some embodiments, different methods can be used for molding and filling preforms with less servo systems. As described herein, the actual filling time of a container, for example, can, in general, be in the range of about 0.3 to 0.6 seconds. This pressure is maintained in the container for improved container definition.
    [0046] In some embodiments, a staggered array of servo systems 60 can be used to mold and fill a first plurality of preforms 12 simultaneously, which is followed by the molding and filling of a second plurality of preforms 12. Currently , six mold cavity systems are available for conventional blow molding, having a station cycle of about 2.6 seconds for the six mold cavities. With an estimated filling time of about 0.2 to 0.3 seconds and an estimated recovery time (to refill the fill cylinder) of about 0.4 seconds, the total time required to fill and refill is about from 0.6 to 0.7 seconds. Therefore, for a station cycle time of 2.6 seconds, a third of the six mold system (ie, two mold cavities) could be filled simultaneously, using two servo systems 60 and the advanced station to present the next third cavities (ie, two mold cavities) for filling and refilling the cylinder. As a result, the six-mold system could be filled in thirds for improved yield capacity.
    [0047] In some embodiments, the filling cylinders can be used together, so that one cylinder is always available for filling the container, while the other of the cylinders is refilling. Also, in some embodiments, the piston 40 of the present teachings can be configured as a double-sided piston, so that as it is actuated to expel product L from one side of the piston 40, the other side is acting on a cylinder opposite and aspirating product L to an opposite cylinder volume. Therefore, an alternating action of piston 40 can serve as a fill / refill operation and a refill / fill operation.
    [0048] Some additional advantages considered by the present teachings will now be discussed.
    [0049] The combination of the blowing and filling processes in one part of the equipment (molding station 10) can reduce the handling of parts and therefore lead to reduced capital cost per resulting C plastic container. In addition, the space required by a process that simultaneously blows and fills the resulting plastic container C can be significantly reduced in relation to the space required when the processes are separated. This can also result in lower infrastructure costs.
    [0050] The integration of the two processes in a single step can reduce the labor and additional costs (capital and expenses) associated with handling bottles after they are produced and before they are filled.
    [0051] The integration of the blowing and filling processes in a single process eliminates the need to transport bottles. Bottle transportation is inherently inefficient and expensive. The transport of preforms, on the other hand, is much more efficient. In one example, a towed load of empty 500 ml water bottles contains approximately 100,000 individual bottles. The same size trailer loaded with preforms required to make 500 ml water bottles will lead to approximately 1,000,000 individual preforms, a 10: 1 improvement.
    [0052] Compressed air is famously an inefficient means of transferring energy. Using the final product to provide hydraulic pressure to blow the container will require the equivalent of a positive displacement pump. As a result, it is a much more efficient way to transfer energy. The use of a servo system as described here is a more efficient way to transfer energy.
    [0053] In the exemplary method described here, the preforms can be passed through an oven above 100 ° C (212 ° F) and immediately filled and capped. In this way, the opportunity for an empty container to be exposed to the environment, where it could become contaminated is greatly reduced. As a result, the cost and complexity of aseptic filling can be greatly reduced.
    [0054] In some cases, where products are filled with hot, the packaging must be designed to accommodate the high temperature to which it is exposed during filling and the resulting internal vacuum is exposed, as a result of cooling the product. A design that accommodates these conditions may require added weight from the container. Hydraulic / liquid blow molding offers the potential to eliminate the hot filling process and, as a result, reduce the weight of the packaging.
    [0055] The process described here can eliminate intermediate work in the process and, therefore, can avoid the cost associated with storage and / or silos of containers and / or forklifts and / or damage to the product, etc. In addition, without working on the process inventory, total working capital can be reduced.
    [0056] As blowing and filling are more integrated, but remain with two separate processes (such as conventional methods of forming and subsequently filling), the overall efficiency of this system is the product of the individual efficiencies of the two parties. Individual efficiencies can be driven largely by the number of transitions as the parts move through the machines. The integration of the two processes in one can provide the opportunity to minimize the number of transitions and, therefore, increase the overall efficiency of the process.
    [0057] Many drinks, including juices, teas, beer, etc., are sensitive to oxygen and need to be protected when packaged. Many plastics do not have sufficient barrier characteristics to protect oxygen contents during the life of the packaged product. There are a number of techniques used to impart additional barrier properties to the container in order to reduce the transmission of oxygen and therefore protect the contents of the package. One of the most common techniques is to use an oxygen scavenger on the bottle wall. This eliminator can be molded directly into the preform. The relatively thick wall of the preform protects the eliminator from being consumed before blowing into a container. However, once the container has been blown, the surface area of the wall increases and the thickness decreases. As such, the path that oxygen has to travel to contact and react with the active disposal material is much shorter. Significant consumption of oxygen scavengers can begin as soon as the container is blown. If the container is formed and filled at the same time, then the eliminator is protecting the product throughout its life and not being consumed while the container is empty, waiting to be filled.
    [0058] The method described here can be particularly useful for filling applications, such as isotonics, juices, teas and other products that are susceptible to biological contamination. As such, these products are typically filled in a sterile, controlled environment. Commercially, two ways are typically used to obtain the required sterile environment. In Europe, a primary method for filling these types of drinks is in an aseptic filling environment. The filling operation is carried out in a clean space. All product components, including packaging, must be sterilized before filling. Once filled, the product must be sealed until consumed, preventing any potential for the introduction of bacteria. The process is expensive to install and operate. Likewise, there is always a risk of bacterial contaminants breaking through operational defenses and contaminating the product.
    [0059] In North America, a predominant method for filling beverages susceptible to contaminants is through hot filling. In the process, the drink is introduced into the container at a temperature that will kill any bacteria that are present. The container can be sealed while the product is hot. A disadvantage of this technology is that the containers usually need to be weighed to withstand the high filling temperature and the vacuum that eventually develops in the container as the product cools. Likewise, the blowing process is a little more complex and therefore more expensive than non-heat blow molding. The exhibition described here offers the opportunity to drastically reduce the course and complexity of filling sensitive foods and drinks. By combining the blowing and filling processes, there is an ability to heat the preform above 100 ° C (212 ° F) for a sufficient period of time, necessary to kill any biological contaminants. If a sterile product is used as the container forming medium and then immediately sealed, the process can result in a very cheap aseptic filling process with very little opportunity for contamination.
    [0060] There are many other bottled products where technology can be applied. Products such as dairy products, beverages, household cleaning products, salad dressings, dressings, pastes, syrups, edible oils, personal care items, and others can be bottled using such methods. Many of these products are currently in blow-molded PET containers, but also in extruded molded plastic containers, glass bottles and / or cans. This technology has the potential to dramatically change the economic aspect of packaging manufacturing and filling.
    [0061] Although much of the description has been focused on the production of PET containers, it is considered that other polyolefin materials (eg polyethylene, polypropylene, etc.), as well as a number of other plastics can be processed using the teachings here discussed.
    [0062] The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit exposure. Individual elements or features of a particular embodiment, in general, are not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. It can also be varied in many ways. These variations should not be considered as a departure from exposure and all such changes are intended to be included within the scope of the exposure.
    权利要求:
    Claims (13)
    [1]
    1. A system for simultaneously forming and filling a container comprising: a mold cavity (16) that defines an internal surface (34) and adapted to accept a preform (12); a pressure source (20) that has an inlet (46); and a blowing nozzle (22) adapted to receive the liquid from the pressure source (20), and transfer the liquid to a pressure in the preform (12), thus inciting the preform (12) to expand towards the inner surface (34) of the mold cavity (16) and create a resulting container, in which the liquid remains inside the container as a final product, characterized by the fact that the pressure source (20) has a servo motor system (60) operable in a first upward direction in which the liquid is aspirated from the inlet (46) and in a second downward direction in which the liquid is propelled towards the preform (12), in which the servo motor system (60) comprises at least one servo motor (62) and one controller (64), wherein the at least one servo motor (62) is variablely controlled and where the controller (64) is operationally coupled to the servo motor system (60) which monitors an operational status of the servo motor system (60 ).
    [2]
    2. System for simultaneously forming and filling a container, according to claim 1, characterized by the fact that the controller (64) is operationally coupled to the servo motor system (60) that detects a rupture of the preform ( 12) ..
    [3]
    3. System for simultaneously forming and filling a container according to claim 1 or 2, characterized in that the blowing nozzle (22) defines a shape adapted to form a seal with a preform finish ( 12).
    [4]
    System for simultaneously forming and filling a container according to any one of claims 1 to 3, characterized in that the mold cavity (16) is at a temperature between 0 ° C to 32 ° C.
    [5]
    System for simultaneously forming and filling a container according to any one of claims 1 to 4, characterized by the fact that it also comprises a stretching rod (26) adapted to extend into the preform (12) and mechanically stretching the preform (12) before the liquid is pushed into the preform (12).
    [6]
    6. System for simultaneously forming and filling a container according to any one of claims 1 to 5, characterized in that the preform (12) is initially expanded outwards, under a first pressure and, subsequently, expanded outward, under a second pressure, the second pressure being greater than the first pressure.
    [7]
    7. System for simultaneously forming and filling a container, according to claim 6, characterized by the fact that the first pressure is between 689.4757 KPa at 1.034.21355 KPa (100 PSI and 150 PSI), and the second pressure is between 3,447.3785 KPa to 4,136.8542 KPa (500 PSI and 600 PSI).
    [8]
    8. System for simultaneously forming and filling a container, according to claim 7, characterized by the fact that the servo motor system (60) generates the first pressure and the second pressure.
    [9]
    9. System for simultaneously forming and filling a container, according to claim 1, characterized by the fact that the servo motor system (60) is operable in a second direction, opposite the first direction, in which the liquid is removed out of the preform (12) to define a free space within it.
    [10]
    10. System for simultaneously forming and filling a container, according to claim 1, characterized by the fact that the servo motor system (60) is operable in a second direction, opposite to the first direction, in which a vacuum is created inside the preform (12) to disengage the preform (12) from the inner surface (34) of the mold cavity (16).
    [11]
    11. System for simultaneously forming and filling a container according to claim 1, characterized by the fact that it comprises: a plurality of mold cavities (16) that define an internal surface (34) and adapted to accept a pre -form (12); a pressure source (20) having a single servo motor system (60) operatively coupled with the plurality of mold cavities to supply a liquid to at least one of the plurality of mold cavities, the single servo motor system (60) operable in a first upward direction in which the liquid is withdrawn from an inlet (46) and in a second downward direction in which the liquid is propelled in the direction of the preform associated with at least one of the plurality of mold cavities, and a blow nozzle (22) adapted to receive the liquid from the pressure source (20), and transfer the liquid to a pressure in the preform (12) thereby inciting the preform to expand towards the inner surface (34) of the mold cavity (16) and create a resulting container, in which the liquid remains inside the container as a final product.
    [12]
    System for simultaneously forming and filling a container according to claim 11, characterized in that said single servo motor system (60) is operatively coupled with the plurality of mold cavities to supply said liquid for at least two of the plurality of mold cavities, the single servo motor system (60) operable in a first direction, in which the liquid is withdrawn from said inlet (46) and simultaneously propelled towards the preform (12) associated with at least two of the plurality of mold cavities.
    [13]
    13. System for simultaneously forming and filling a container characterized by the fact that it comprises: a mold cavity (16) that defines an internal surface (34) and adapted to accept a preform (12); a pressure source (20) that has a servo motor system (60) operable in a first direction in which the liquid is withdrawn from an inlet (46) and propelled towards the preform (12); a controller (64) operationally coupled to the servo motor system (60) that detects a rupture of the preform (12); and a blowing nozzle (22) adapted to receive the liquid from the pressure source (20), and transfer the liquid to a pressure in the preform (12), thus inciting the preform (12) to expand towards the inner surface (34) of the mold cavity (16) and create a resulting container, in which the liquid remains inside the container, as a final product.
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    同族专利:
    公开号 | 公开日
    JP5940072B2|2016-06-29|
    BR112013010947A2|2016-08-30|
    EP2629956A4|2017-03-15|
    RU2566772C2|2015-10-27|
    MX2013004188A|2013-08-15|
    AU2011318463A1|2013-05-09|
    RU2013122869A|2014-11-27|
    JP2013541448A|2013-11-14|
    WO2012054221A2|2012-04-26|
    US8573964B2|2013-11-05|
    US20110135778A1|2011-06-09|
    AU2011318463B2|2015-12-10|
    EP2629956A2|2013-08-28|
    CN103260853A|2013-08-21|
    EP2629956B1|2018-09-12|
    WO2012054221A3|2012-06-28|
    AR083457A1|2013-02-27|
    CN103260853B|2016-08-31|
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    法律状态:
    2018-04-03| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2019-12-31| B09A| Decision: intention to grant|
    2020-03-10| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 03/10/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/906,275|US8573964B2|2006-04-13|2010-10-18|Liquid or hydraulic blow molding|
    US12/906,275|2010-10-18|
    PCT/US2011/054584|WO2012054221A2|2010-10-18|2011-10-03|Liquid or hydraulic blow molding|
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