• 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:
    A container 1 consists of a cup 3 in the form of a truncated cone with a circumferential side wall, a bottom and an open top that is closed by a wall part 7. The container is filled with a product to be extracted 5. The walls of the cup are made of stiff water impermeable material. The edge of the side wall bounding the open end side is provided with a flange projecting outwards in radial direction to which said wall part is attached. The wall part 7 is made up of various layers. Of these layers, an outer layer is provided with a plurality of openings provided by means of a laser. The second layer that is attached to the first is fluid impermeable. This second layer 15 is colored white and has stronger laser light reflective properties than the first layer 13 which is transparent. This increases the resistance to the wall part burning out.
    公开号:NL2016578A
    申请号:NL2016578
    申请日:2016-04-09
    公开日:2017-07-24
    发明作者:Barbara Arnoldus Maria Stas Marinus
    申请人:Stas I P B V；
    IPC主号:
    专利说明:

    Holder with a product to be extracted DESCRIPTION:
    FIELD OF THE INVENTION
    The invention relates to a container containing a product to be extracted, in particular ground coffee beans or sliced tea leaves, which container is provided with a number of walls of which at least one wall part contains at least two layers of materials with different properties, a first of which layer is provided with a plurality of openings and the second layer is liquid impermeable, the second layer being attached to the first layer at least around the openings in the first layer.
    State of the art
    Such a container is generally known. In the European patent application EP 15163447.4 a holder is described which also has a wall part of two layers of materials with different properties. One of the properties that is different for both layers is the temperature sensitivity. The openings are burned with a laser in the layer with the lowest melting point. When burning through this entire layer, the other layer forms a barrier against further burn-in, so that undesired through holes are prevented from being present in the wall part.
    Summary of the invention
    An object of the invention is to provide a holder of the type described in the preamble in which the resistance of the second layer of the wall part against burning through by a laser can be made simple and with relatively inexpensive means than in the known holder. To this end, the holder according to the invention is characterized in that the second layer has stronger laser light reflecting and / or diffusing properties than the first layer. Laser light reflecting and / or scattering properties are better to increase than temperature sensitivity. Films with laser light-reflecting or laser light-scattering properties are generally cheaper to manufacture than films with a low temperature sensitivity. This makes it easier to apply a layer with high burn-through resistance. Due to this improved burn-through barrier, the duration of the laser pulses can be longer so as to burn larger holes in one of the layers without the risk of burn-out of both layers being present.
    An embodiment of the holder according to the invention is characterized in that the second layer is colored. Depending on the laser used and the color of the laser light, one color will reflect more or less laser light than another color. The color white will reflect every laser light well and is therefore preferred.
    Preferably, the second layer is of white polylactide or another plastic that has been stained with a laser light reflecting dye, preferably a white dye. BOPP, PP, cellulose, for example, can be used as plastic.
    The second layer can also be vapor-deposited with preferably silicon oxide. This scatters the laser light and therefore has a laser light inhibiting effect.
    In a favorable embodiment, an extra layer is present between the first and the second layer, for example polyvinyl alcohol or a metal layer such as aluminum. This extra layer is preferably vapor-deposited.
    The layers are preferably connected to each other over the entire surface. The layers can also be present separately on each other and attached to the flange on the edge. The layers must then be tightly pressed together during the laser treatment because the layers must remain in contact during the laser.
    Preferably the first layer is transparent, preferably of colorless polylactide, BOPP, nylon, polyester, or the first layer has a dark laser light-absorbing color, for example dark PLA or a colored other plastic, for example with a black dye. This absorbs the laser light well, and the coffee in the holder is better protected against light, which improves the quality.
    A further embodiment of the container according to the invention is characterized in that said wall part further comprises a third layer of filtering material.
    The first layer is preferably located on the outside of the holder.
    The holder preferably further comprises a cup in the form of a truncated cone with a circumferential side wall, a bottom and an open top closed by said wall part, wherein the walls of the cup are of stiff water impermeable material, and wherein the edge of the side wall bounding the open end side is provided with a flange projecting outwards in radial direction to which said wall part is attached.
    Brief description of the drawings
    The invention will be explained in more detail below with reference to an exemplary embodiment of the holder according to the invention shown in the drawings. Hereby shows:
    Figure 1 shows a cross section of an embodiment of the holder according to the invention; and
    Figure 2 shows the wall part consisting of several layers in section. Detailed description of the drawings
    Figure 1 shows a cross-section of an embodiment of the holder according to the invention. The holder 1 consists of a cup 3 in the form of a truncated cone with a circumferential side wall, a bottom and an open top which is closed by a wall part 7. The holder is filled with a product 5 to be extracted, for example ground coffee beans. The walls of the cup are made of stiff water impermeable material. The edge of the side wall bounding the open end side is provided with a flange projecting outwards in radial direction to which said wall part is attached.
    The wall part 7 is made up of various layers. Figure 1 shows the layers thicker in relation to the thickness of the walls of the cup than they actually are. In figure 2 the wall part consisting of several layers is enlarged in cross-section. A first layer 13 of these layers is provided with a plurality of openings 9a, 9b, 9c. For illustration only three openings are shown, but in reality there are many more openings in the first layer. Furthermore, three openings with strongly different shapes are shown for illustration, while in reality all openings have a much more uniform shape. The second layer 15 is liquid impermeable and is attached to the first layer.
    This second layer 15 is colored white and has stronger laser light reflective properties than the first layer 13 which is transparent. Both layers are made of polylactide, for example.
    A third layer 17 of the wall part 7 is formed by a filtering material and is located on the inside of the second layer 15. This third layer 17 is separate from the second layer 15 except at the location of the flange. The first layer 13 is located on the outside of the container. This third filtering layer is not necessary if particularly small holes are present in the first layer.
    The wall part with which the open top of a coffee cup is closed is locally weakened because after a pressure build-up the wall part must spring open at various places. The first layer of this wall part is formed by a foil. The weakening of this foil is done by laser-cutting recesses in the foil. It is difficult to laser a 40 micron thick film. After all, the holes / stripes should not go through. Because the coffee may not oxidize i.v.m. with optimum freshness and aroma retention, there must be no leakage holes in the membrane. Various patterns and / or stripes can be applied with laser, preferably dots. The film thickness and the duration and power of the laser's pulses may vary slightly, but the composition of the film (especially with biological films) may also vary. Because production takes place at a high speed, there is a chance that one or more damages in the foil layer are just a little deeper than desired. This makes the cup more vulnerable during transport.
    If the weakenings in the film are lasered less deeply, there is a chance that the film will tear during extraction with a too fast flow, which results in a less constant coffee-making process.
    One can choose to first make openings through the foil by means of lasering or pricking with a warm seam or the like, but then after perforating a layer of e.g. foil, paper or aluminum. This should then be a layer that cannot withstand the pressure resistance of the coffee maker, it is often difficult to apply a very thin layer. They also have a sheet / roll of foil that has a continuous pattern whose waste is therefore processed (with holes). The very thin layer of the at least two layers is also very vulnerable during sealing on the flange, which considerably increases the chance of leakage openings.
    The layer that has to break open still has the same surface tension after application to the layer provided with openings and therefore tends to break randomly (especially if the printing direction is on the side provided with openings) which is not favorable for the process . But the layer provided with openings also has a high chance of random cracks. If the printing direction is on the break layer side, one has the same problem because the film without openings requires minimal surface damage (preferably at the openings) to facilitate breaking.
    The solution lies in a wall part that is made up of assembled layers that have favorable laser properties and unfavorable laser properties. This way you can actually brake the laser pulse during the laser process. For example, if a transparent / or black foil layer is combined with a white / or metal layer, the transparent and / or black layer will absorb the laser beam very well (and an opening is created in the black / and / or silver-colored layer), but if the laser beam white / silver layer, this will considerably limit the laser beam. This means that a faster and less precise laser process can be used, but above all the laser barrier layer remains intact. The advantage is that with certain layers the barrier layer is at least damaged as desired and shape on the surface (only near the openings). This has the great advantage that it is convenient because it must also break / tear open / stretch there. This leads to a particularly constant process. In addition, one now has the advantage that one can influence the hole size and thus coordinate in relation to the number of holes / openings or the good to be extracted. The laser barrier layer absorbs no / less light energy while the laser sensitive layer continues to absorb energy, leading to a larger hole / opening.
    In many situations crater edges also occur on one side, which has the advantage that the film is strengthened and minimizes the risk of tearing, (with laser-cut film the material can better evaporate / burn away during lasing, which means that less crater edges are strong on this film then makes the present application). The layers can of course also vary in temperature sensitivity, but also in hardness, e.g. elastic or tough. The adjustment of the laser is particularly sensitive, at high power people laser through everything, in this invention talks about dosed pulses of e.g. a CO2 laser.
    It is also possible to choose i.p.v. e.g. bring a white layer, a milky white and a transparent layer together. The milky white layer then has a laser opposing role, the light is then scattered / distributed / spread in addition to reflecting. A major advantage is that the laser barrier layer also slightly damages / becomes thinner and then a thicker, better-to-process film can be used.
    A filtering layer is present between this layer and the cup, e.g. filter paper but preferably non-woven laid fiber. An advantage is that the film layers can be applied to the holder (e.g., sealed or glued) without laser processing.
    The holder can also be a pad formed from two sturdy walls that are attached to each other along the circumference, at least one of the walls forming the said wall part. These two walls are preferably sealed together. The walls are preferably not provided with openings at the location of the seal to prevent holes from forming during sealing, as a result of which liquid tightness and / or air tightness is no longer present.
    Between the 2nd and 3rd layer there can be another layer that can be an adhesive layer, Between the 2nd and 3rd layer can be another layer this can be an oxygen-gas barrier layer, which besides vaporization with fluorine gas (polymerization) Fluorization (on the inside of the capsule side), another extra barrier layer (foil / lacquer) represents eg polyvinyl alcohol based or another layer eg Omocer from Fraunhofer institute. If the 2nd layer is provided with: 1. an evaporated oxygen-barrier layer with the 2. extra lacquer / foil layer and an adhesive layer for adhesion of the non-woven and / or filter layer.
    Is it possible to laser the cover / lid of the capsule if this cover / lid has already been applied to the capsule. And also with loose die-cut / cut lids. This has the advantage that the foil does not have to be lasered continuously. And that the damage can be done at the exact location without much without tolerances.
    An additional advantage is that the damage eg in the middle of the eg round seal the damage has a different value intensity than on the outer side.
    This can be an advantage that people can pre-program the flow slightly differently. For. a better extraction. An example may be that the holes are lasered slightly larger / deeper in the middle than towards the outside. The passage will be larger in the middle.
    It is also possible to choose to laser more holes per cm2 mm2 or similar than towards the outside.
    The laser processing can be on the outside of the capsule or on the inside, the side that is attached to an element, for example a coffee capsule or ring or plate.
    It is also possible to provide the capsule with a disc-ring shaped, slightly chamfered if necessary. with a click-cam compaction system cover that is mounted in the capsule. This can also serve as a strengthening element for the capsule, so that the diameter of the capsule is not compromised during transport in the extract preparation machine, for example an espresso or coffee maker. During dosing of the capsule in an espresso machine, the capsule often falls into slots with a cam. The capsule enters the extraction position during the commissioning of the device. After preparing the extract, for example espresso or coffee, the capsule falls into a collection container, where there is preferably little residual liquid. This ring / disc-shaped element may optionally have a flange for limiting or a sealing surface.
    This annular / disc-shaped element then has a flange which protrudes horizontally to obtain a gas-tight / oxygen-tight connection therewith.
    If an annular / elliptical element is used, the foil combination can be sealed on one side or poured in using an insert molding process. With an elastic foil (not mentioned in this application) one can establish a clamp between the ring and the capsule. The sealing of foil can be done ultrasonically or with heat or glue. Glue layers are often not necessary because the nature of the materials are close to each other, if there is a distance, the filtering layer is eg non-woven film (layer can be positioned separately) can, through the particularly thin filaments from which the layer is formed, form an adaptation that connects the marriages, this fiber has a fiber-strengthening effect. At the location of the fixation.
    Foil production process development / industrialization.
    The process must be in a clean room, the foil must have BRC-food-safe or an equivalent certification, the foil consists of 3 or more layers, resulting from the lasing and joining of materials, shrinkage, wrinkles, bumps etc. in the foil . The foil must sit nicely on the roll.
    The foil can be printed inside, because it is produced by means of a laser-inhibiting / reflecting layer within this whole, a soft elastic layer that is more or less heat-sensitive produces a balloon weakening that after extraction only contains 1 exit and closes after extraction These spray nozzles may not form too large because, for example, the holes have been lasered too large with respect to the residual thickness or thickness of the laser barrier layer. then the valve (if this can still form) has a self-closing effect.
    If the 2nd layer has an equivalent hardness and tensile strength compared to, for example, the first layer, there is a break with hard, crispy and amorphous films. Whereas in the case of two softly brought together elastic layers, the remaining layer (in this case the bottom of the opening) near the openings of the outflow opening of the, for example, wafer-shaped plate, can press out and stretch and tear through the surface enlargement.
    Production process: 1. cut films to size (thickness control, tensile testing) 2. print white or transparent film 3. seal two layers with probably heat on each other. (tensile test adhesion) 4. lasering film, thickness control, hole size control, hole depth control, crater edge control 5. nonwoven to the film, if desired.
    Although in the foregoing the invention has been elucidated with reference to the drawings, it should be noted that the invention is by no means limited to the embodiment shown in the drawings. The invention also extends to all embodiments deviating from the embodiment shown in the drawings within the scope defined by the claims.
    权利要求:
    Claims (10)
    [1]
    Holder (1) containing a product (5) to be extracted, in particular ground coffee beans or sliced tea leaves, which holder is provided with a number of walls of which at least one wall part (7) has at least two layers (13, 15) contains materials with different properties, a first layer (13) having a plurality of openings (9a, 9b, 9c) and the second layer (15) being liquid impermeable, the second layer at least around the openings in the first layer is attached to the first layer, characterized in that the second layer (15) has stronger laser light reflecting and / or diffusing properties than the first layer (13).
    [2]
    Container according to claim 1, characterized in that the second layer (15) is colored.
    [3]
    Holder according to claim 2, characterized in that the second layer (15) is made of white polylactide or another plastic that is colored with a laser light-reflecting dye.
    [4]
    4. Container as claimed in claim 1, 2 or 3, characterized in that the second layer is a silicon oxide layer.
    [5]
    Container according to claim 1, 2, 3 or 4, characterized in that the first layer (13) is transparent.
    [6]
    A container according to claim 5, characterized in that the first layer (13) is of colorless polylactide or the first layer has a dark laser light-absorbing color.
    [7]
    7. Holder as claimed in any of the foregoing claims, characterized in that an extra layer with laser light-inhibiting properties is present between the first and the second layer.
    [8]
    A container according to any one of the preceding claims, characterized in that said wall part (7) further comprises a third layer (17) of filtering material.
    [9]
    A container according to any one of the preceding claims, characterized in that the first layer (13) is located on the outside of the container.
    [10]
    10. Container as claimed in any of the foregoing claims, characterized in that the container (1) comprises a cup (3) in the form of a truncated cone with a circumferential side wall, a bottom and an open top closed by said wall part (7), wherein the walls of the cup are made of stiff water impermeable material, and wherein at the open end side bounding edge of the side wall is provided with a flange projecting radially outwards to which said wall part is attached.
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    同族专利:
    公开号 | 公开日
    NL2016578B1|2017-08-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2019-12-04| MM| Lapsed because of non-payment of the annual fee|Effective date: 20190501 |
    优先权:
    申请号 | 申请日 | 专利标题
    NL2016106|2016-01-15|
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