• 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:
    Of an assembly of two capsules, each capsule 61 has a cup 63, open on one side, of an oxygen-impermeable material, which is provided with an outward projecting flange 67. This open side is closed by a foil 69 which extends around the circumference of the flange. is attached. An airtight sealing ring 70 is provided over the entire circumference of the flanges against the peripheral edges 67a of the flanges by means of injection molding. This sealing ring seals the space between the two flanges in airtight manner, as a result of which the space in the capsule does not come into contact with the outside environment, even if the foil were damaged when applied to the flange. In that case the space is closed by the foil and / or the cup of the other capsule and the extract present in the capsule retains its aroma and taste.
    公开号:NL2020415A
    申请号:NL2020415
    申请日:2018-02-10
    公开日:2018-05-31
    发明作者:Barbara Arnoldus Maria Stas Marinus
    申请人:Stas I P B V；
    IPC主号:
    专利说明:

    DESCRIPTION:
    FIELD OF THE INVENTION
    The invention relates to a capsule containing a product to be extracted, in particular ground coffee beans, which capsule comprises a cup open on one side of an oxygen-impermeable material, which open side is bounded by an edge and is sealed by a sealing sheet of a oxygen-impermeable material connected to the edge.
    During use of such a capsule in a coffee-making apparatus suitable for this purpose, the capsule with the sealing sheet is pressed against a wall provided with spouts, with for instance a waffle structure. During the preparation of coffee, a liquid is injected into the cup under high dew and the sealing sheet is pressed against the wafer structure by the liquid pressure built up in the cup, the sealing sheet tearing open at a number of places. A number of the parts of the sealing sheet that are partially torn loose will substantially close a number of outlet holes in the wall, so that ultimately a limited through-flow opening remains. As a result, during the preparation process, the pressure built up in the capsule is maintained and a foam layer is formed on the coffee.
    State of the art
    A capsule formed by a cup open at one side and sealed by a sealing sheet and containing a product to be extracted is generally known in the embodiment of an aluminum cup sealed by an aluminum foil. The known capsule is provided on the open side bounding edge with an outward projecting flange to which the foil is attached. Both the aluminum cup and the aluminum foil are airtight so that the extract contained in them remains fresh and the extract retains its aroma and taste. The disadvantage of this well-known capsule is that it is environmentally harmful unless it is recycled. For recycling, the capsules must be collected or returned, which is difficult to achieve.
    Furthermore, capsules of biodegradable material are known. This material is not airtight. To make the cup airtight, it can be provided with an airtight barrier layer, for example silicon oxide. The sealing sheet for these capsules is formed by a plastic film. This known capsule is also provided on the open side bounding edge with an outward projecting flange to which the foil is attached. This foil can also be provided with an airtight barrier layer. When applying this thin, flexible film to the cup flange with the aim of obtaining an airtight connection, the film deforms (during gluing) and / or shrinks (sealing, ultrasonic welding), damaging the airtight barrier layer and causing it to no longer shields contents from the environment. The airtight barrier layer of the foil can also be damaged during handling and packaging of the capsule during the manufacturing process. Damage to the barrier layer is at the expense of the freshness of the extract contained therein. For this reason, biodegradable capsules are packaged individually or in a number in an airtight foil with an aluminum coating that is not biodegradable. Although this is more environmentally friendly than aluminum capsules, it is still harmful to the environment.
    Summary of the invention
    An object of the invention is to provide a capsule of the type described in the preamble which is less harmful to the environment in which the contents are better airtightly sealed from the environment than in the known biodegradable capsules. To this end, the capsule according to the invention is characterized in that a sealing ring of an oxygen-impermeable material is airtightly attached to the edge over the entire circumference of the edge, which sealing ring connects the edge and the sealing sheet to each other so that the space in the capsule is airtight. the area is closed. This sealing ring can be applied to the edge and the sealing sheet without first having to attach the sealing sheet to the edge in an airtight manner. When applying the sealing ring, the sealing sheet is loaded considerably less than with sealing and / or gluing. This reduces the risk of damage to the sealing sheet.
    An embodiment of the capsule according to the invention is characterized in that the cup on the open side bounding edge is provided with an outward projecting flange, the sealing sheet being connected to the flange, the sealing ring being airtight on the sealing sheet and / or on the sealing sheet. flange is attached.
    The sealing ring preferably closes the seam between the flange and the sealing sheet airtight over its entire circumference.
    A favorable embodiment of the capsule according to the invention is characterized in that the flange in the side of the flange facing the cover sheet is provided with an annular recess which extends over the entire circumference of the flange, the sealing ring being present in the recess and the part of the sealing sheet present outside the sealing ring is attached to the part of the flange outside the recess. The advantage of this construction is that the zone where the cover sheet is attached to the flange, for example sealed, and where the chance of damaging the airtight barrier layer is greatest, is present outside the sealing ring and therefore cannot have any effect on the seal. Furthermore, an important advantage of this construction is that the capsule and thus also the cover sheet on the side remote from the flange is completely flat. If the sealing ring were to be provided by injection molding, the capsule with this flat side can be pressed well against one side of a mold, which is advantageous during injection molding.
    Another favorable embodiment of the capsule according to the invention is characterized in that the sealing ring seals the outer circumference of the contact surface between the flange and the sealing sheet in airtight manner. If no attempt is made to fix the sealing sheet to the flange in an airtight manner, for example by sealing or with the aid of a hot melt but for example with a layer of glue, the jug for damaging the barrier layer will decrease considerably. In order to nevertheless obtain an airtight seal, the circumferential edge of the contact surface (connecting layer) between the flange and the seal sheet exposed to the environment must then be sealed airtight without stressing the seal sheet mechanically to prevent damage to the barrier layer. This is achieved in this embodiment by arranging the airtight sealing ring at the peripheral edge of the contact surface.
    A further embodiment of the capsule according to the invention is characterized in that the foil with the peripheral edge is present between the inner edge and outer edge of the flange and the sealing ring is present on the peripheral edge and the upper side of the flange.
    Another embodiment of the capsule according to the invention is characterized in that the flange on the inner side of the cup is provided over the entire inner circumference with a recess adjoining the upper side of the flange and the foil having a peripheral edge is present in the recess, wherein the sealing ring is present between the peripheral edge of the film and the outer circumference of the recess.
    Yet another embodiment of the capsule according to the invention is characterized in that the peripheral edges of the foil and flange coincide and the sealing ring is present around the peripheral edges. The sealing ring is preferably present here not only on the peripheral edges of the flange and the foil, but also on the sides of the flange and the foil facing away from each other.
    The invention also relates to a method for manufacturing the capsule according to the invention. With regard to the method, the invention is characterized in that the capsule is introduced into an injection molding machine and an airtight sealing ring is injection-molded on the film and the flange over the entire circumference of the film. During injection molding, during the application of the sealing ring, the film is pressed against the flange under high pressure so that it lies well and the sealing ring is tightly applied to and / or on the film and the flange so that a good airtight seal is obtained.
    The invention furthermore relates to an assembly of two capsules in which the peripheral edges of the foil and flange coincide and the sealing ring is present around the peripheral edges. With regard to this composition, the invention is characterized in that the capsules with the foils are present against each other and in each capsule the foil is sealed on the flange over the entire circumference, wherein a detachable detachable portion of the flanges of the two capsules is provided. Airtight sealing ring is present which is airtightly connected to both flanges along the entire outer circumference of the flanges. Even if the foil of one or both capsules were damaged as a result of the sealing, so that the space in the cup is no longer completely sealed, the space in the capsule will not be connected to the outside environment, because it is sealed off foil and / or cup of the other capsule, so that the extract contained in the capsule retains its aroma and taste.
    An embodiment of the assembly according to the invention is characterized in that the sealing ring is present not only on the outer edge of the flanges but also on the sides of the flanges facing away from each other.
    A further embodiment of the assembly according to the invention is characterized in that the sealing ring is weakened at a location along the circumference and is provided with a protruding release tab on one side of the weakening. This allows the sealing ring to be easily pulled off from both capsules, after which the capsules can be used in a suitable device.
    The invention also relates to a method for manufacturing the assembly according to the invention. The sealing ring can be formed separately from strip material or interrupted plastic ring with a C-shaped cross-section and then be fitted around the flanges pressed against each other, optionally with glue between them, and attached to each other with the ends. The disadvantage of this is that many operations are required and that it is difficult to obtain an airtight seal. The assembly according to the invention is characterized in that the two capsules with the films are brought against each other in an injection molding machine and are pressed against each other, the sealing ring being injection molded around the flanges. During injection molding, the flanges are pressed against each other under high pressure and the sealing ring is fitted under high pressure against and / or partly around the flanges, so that a good airtight seal is obtained.
    Brief description of the drawings
    The invention will be explained in more detail below with reference to exemplary embodiments of the capsule and the assembly according to the invention shown in the drawings. It shows:
    Figure 1 shows a first embodiment of the capsule according to the invention in section;
    Figure 2 shows a detail at the location of the sealing ring of the capsule shown in Figure 1 with the sealing ring around the foil and flange;
    Figure 3 shows a detail of a second embodiment of the capsule according to the invention in section with the sealing ring between the outer circumference of the foil and an outer edge of a recess in the flange;
    Figure 4 shows a detail of a third embodiment of the capsule according to the invention in section with the sealing ring against the peripheral edge of the foil and on the flange;
    Figure 5 shows a detail of a fourth embodiment of the capsule according to the invention in section with a sealing sheet on the foil;
    Figure 6 shows a detail of a fifth embodiment of the capsule according to the invention in section with the sealing ring remote from the outer circumference of the flange;
    Figure 7 shows a detail of an eighth embodiment of the capsule according to the invention with a cup without flange and the sealing ring between the side wall of the cup and a ring attached to the foil;
    Figure 8 shows a first embodiment of the assembly according to the invention in section with the sealing ring against the peripheral edges of the flanges;
    Figure 9 shows a detail of a second embodiment of the assembly according to the invention in section with the sealing ring around the peripheral edges of the flanges;
    Figure 10 shows a detail of a third embodiment of the assembly according to the invention in which the flanges are provided with a protruding peripheral edge;
    Figure 11 shows a fourth embodiment of the assembly according to the invention in section with a sealing sheet between the films of the two capsules;
    Figure 12 shows the assembly shown in Figure 8 in perspective with a first embodiment of the sealing ring;
    Figure 13 shows a fifth embodiment of the assembly according to the invention in top view with a second embodiment of the sealing ring; and
    Figure 14 shows a sixth embodiment of the assembly according to the invention in top view with a third embodiment of the sealing ring.
    Detailed description of the drawings
    Figure 1 shows a first embodiment of the capsule according to the invention in cross section. The capsule 1 has a cup 3 open on one side of biodegradable material provided with an oxygen-impermeable barrier layer. This barrier layer may be present on the outside and / or inside of the cup or may be located between two layers of biodegradable material. At the boundary edge 4 of the open side 5, an outwardly extending flange 7 is present. The open side of the cup is closed by a sealing sheet formed by a foil 9 which is attached to the flange by means of an airtight sealing ring 10 over the entire circumference of the flange. The peripheral edges of the foil and flange coincide. Figure 2 shows a detail of the capsule at the location of the sealing ring. The sealing ring seals the outer circumference 13 of the contact surface 15 between the flange and the foil in airtight manner. The sealing ring is injection molded against the peripheral edge of the flange and of the foil as well as on the opposite sides 17 and 19 of the foil 9 and the flange 7.
    Figure 3 is a sectional view of a detail of a second embodiment of the capsule according to the invention. With this capsule 21 there is a disc-shaped recess 25 in the upper side of the flange 27 of the cup 23 which is adjacent to the inside 23a of the cup. The foil 29 is present with the edge in the recess, the peripheral edge 29a of the foil being spaced apart from the outer edge 25a of the recess 25. The sealing ring 30 is arranged between the peripheral edge of the foil and the outer edge of the recess.
    Figure 4 shows a detail of a third embodiment of the capsule according to the invention in section. With this capsule 41, the foil 49 with the peripheral edge 49a is present between the inner edge 47a and outer edge 47b of the flange 47 of the cup 43. The sealing ring 50 is arranged on and against the peripheral edge 49a of the foil and on the upper side of the flange 47.
    Figure 5 shows a detail of a fourth embodiment of the capsule 31 according to the invention in section. The open side of the cup 33 is hereby sealed by a foil 39 which is glued to the flange 37. An oxygen-impermeable sealing sheet 38 is present on the film, which shields the film that is not completely airtight. The sealing ring 40 is provided around the circumference of the flange, foil and cover sheet to seal the seams between the flange, foil and cover sheet airtight.
    Figure 6 shows a detail of a fifth embodiment of the capsule according to the invention in section. With this capsule 51, the flange 57 in the side of the flange facing the foil 59 is provided with an annular recess 52 which extends over the entire circumference of the flange. This sealing ring 60 is present in the recess and the part 59b of the sealing sheet present outside the sealing ring is sealed to the part 57b of the flange outside the recess.
    Figure 7 shows a detail of an eighth embodiment of the capsule according to the invention in cross section. With this capsule 71, the cup 73 is not provided with a flange. The open side of the cup is hereby sealed by an oxygen-impermeable foil 79 which is attached to a ring 75. This ring is present in a recess in the rim 74 of the cup. The space between the rim and the ring is closed off by a sealing ring 80.
    Figure 8 shows a first embodiment of the assembly of two capsules 61 according to the invention in cross-section, wherein the capsules with the foils 69 attached to the flanges 67 of the cups 63 are present against each other. The films 69 are sealed on the flanges 67 over the entire circumference. A band-shaped sealing ring 70 is provided against the peripheral edges 67a of the flanges 67 and airtightly closes the gap between the flanges where the foils 69 are located. The sealing ring 70 can be formed by an airtight tape that is glued to the flanges. Preferably, however, the sealing ring 70 is provided by means of injection molding, whereby it is formed releasably on the flanges 67.
    Figure 9 is a sectional view of a detail of a second embodiment of the assembly of two capsules 81 according to the invention. Hereby the sealing ring 90 is present not only against the peripheral edges 87a of the flanges 87 of the cups 83 but also on the sides 87b of the flanges remote from each other.
    In the detail of a third embodiment of the assembly of two capsules 101 according to the invention shown in Figure 10, the flanges 107 are provided with projecting ribs 108 over the circumference so that the flanges are pressed against each other more firmly during the injection molding of the sealing ring 110 because the sealing ring not only presses against the sides 107b of the flanges facing away from each other but also presses the ribs towards each other. This means that the flanges remain firmly in contact with each other after injection molding.
    Figure 11 shows a cross-section of a fourth embodiment of the assembly of two capsules according to the invention. This differs from the assembly shown in Figure 8 in that a sealing sheet 62 is present between the films. This sealing sheet is attached to one of the capsules 61 with a first sealing ring 70a and is attached to the other capsule with a second sealing ring 70b. If one of the sealing rings is pulled loose, the sealing sheet remains stuck to the other capsule and this capsule therefore remains airtight.
    Figure 12 shows the second embodiment of the assembly shown in Figure 8 in perspective, provided with a first embodiment of the sealing ring. The sealing ring 90 is provided with a release tab 93 and has a diluted portion 95 adjacent the release tab. When pulling on the release tab, the diluted part tears through, so that the sealing ring is pulled away from the flanges 87.
    Figure 13 shows a detail of a fifth embodiment of the assembly of two capsules 121 according to the invention in top view with a second embodiment of the sealing ring. This sealing ring 130 is formed by a tape which is arranged against the peripheral edge 127a of the flanges 127, the end 131a adjacent to the release lip 133 being attached to the other end 131b and capable of being pulled away therefrom.
    Figure 14 shows a sixth embodiment of the assembly of two capsules 141 according to the invention in top view with a third embodiment of the sealing ring. This sealing ring 150 is provided with two release tabs 153. By pulling these lips apart, the diluted portion 155 of the sealing ring breaks between the two release tabs, whereafter the sealing ring can be pulled off the flanges.
    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 embodiments shown in the drawings. The invention also extends to all embodiments deviating from the embodiments shown in the drawings within the scope defined by the claims.
    权利要求:
    Claims (2)
    [1]
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    FIG. 6 FIG. 7
    Capsule (1; 21; 31; 41; 51; 71) containing a product to be extracted, in particular ground coffee beans, which capsule is a cup (3; 23; 33; 43; 53; 73) open on one side of an oxygen-permeable material, which open side (5) is bounded by an edge (4; 74) and is sealed by a sealing sheet of an oxygen-permeable material connected to the edge, characterized in that over the entire circumference of the edge (4; 74) a sealing ring (10; 30; 40; 50; 70) of an oxygen-permeable material is airtightly attached to the sealing sheet and / or to the edge (4; 74), which sealing ring has the edge and the sealing sheet airtight with connects each other in such a way that the space in the capsule is sealed airtight from the environment.
    Capsule (1; 21; 31; 41; 51) according to claim 1, characterized in that the cup (3; 23; 33; 43; 53) is provided on the open side (5) bounding edge (4) of an outwardly projecting flange (7; 27; 37; 47; 57), the sealing sheet being connected to the flange, the sealing ring (10; 30; 40; 50; 60) being airtight to the sealing sheet and / or to the flange is attached.
    Capsule (1; 21; 31; 41; 51) according to claim 2, characterized in that the sealing ring (10; 30; 40; 50; 60) covers the entire circumference of the seam between the flange (7; 27; 37; 47; 57) and the sealing sheet closes airtightly.
    Capsule (51) according to claim 3, characterized in that the flange (57) in the side of the flange facing the cover sheet (59) is provided with an annular recess (52) which extends over the entire circumference of the flange, wherein the sealing ring (60) is present in the recess and the part (59b) of the sealing sheet outside the sealing ring is attached to the part (57b) of the flange outside the recess.
    Capsule (41) according to claim 3, characterized in that the sealing ring () seals the outer circumference (13) of the contact surface (15) between the flange and the sealing sheet () airtightly.
    Capsule (41) according to claim 5, characterized in that the sealing sheet (49) is present with the peripheral edge between the inner edge (47a) and outer edge (47b) of the flange (47) and the sealing ring (51) on the circumferential edge (49a) and the top of the flange (47).
    Capsule (21) according to claim 5, characterized in that the flange (27) on the inner side (23a) of the cup (23) is provided with a recess (25 adjacent the upper side of the flange) over the entire inner circumference and the sealing sheet (29) with a circumferential edge (29a) is present in the recess, the sealing ring (31) being present between the circumferential edge (29a) of the sealing sheet and the outer circumference (25a) of the recess.
    Capsule (1; 31) according to claim 5, characterized in that the peripheral edges of the sealing sheet (9; 39) and flange (7; 37) coincide and the sealing ring (10; 40) is provided around the peripheral edges.
    Capsule (1; 31) according to claim 8, characterized in that the sealing ring (10; 40) not only on the peripheral edges of the flange (7; 37) and the sealing sheet (9; 39) but also on the of sides (17, 19) of the flange and the sealing sheet are present.
    Capsule (31) according to one of the preceding claims, characterized in that the open side of the cup is closed by a foil (39) which is fixed on the flange (37) and which, during use, in an apparatus for preparing coffee is provided with outflow openings, the sealing sheet (38) being present on the foil and having to be removed for use of the cup in the apparatus.
    Capsule (1; 21; 31; 41; 51; 71) as claimed in any of the foregoing claims, characterized in that the sealing sheet is formed by a foil (9; 29; 39; 49; 59; 79) which during use outlets are provided in an apparatus for preparing coffee.
    12. Method for manufacturing the capsule (1; 21; 31; 41; 51; 71) according to one of the preceding claims, characterized in that the capsule is introduced into an injection molding machine and over or near the entire circumference of the sealing sheet (9; 29; 39; 49; 59; 79) an airtight sealing ring (10; 30; 40; 50; 60; 80) is injection molded onto the sealing sheet and the flange (7; 27; 37; 47; 57; 77) .
    An assembly of two capsules according to claim 11, characterized in that the capsules (61; 81; 101; 121; 141) are present with the films (69) against each other and with each capsule the film is placed on the entire circumference on the flange (67; 87; 107; 127) is sealed, with a detachable, airtight seal ring (70; 70a; 70b; 90; 110; 130; 130; 70; 70; 70a) covering the entire outer circumference (67a; 87a; 127a) of the flanges of the two capsules. 150) which is airtightly connected to both flanges along the entire outer circumference of the flanges.
    An assembly of a capsule according to claim 10 and a capsule according to claim 11, characterized in that the capsules (61; 81; 101; 121; 141) provided with a sealing sheet are present with the sealing sheet against the foil of the other capsule , wherein around the entire outer circumference (67a; 87a; 127a) of the flanges of both
    5 capsules a detachable, airtight sealing ring (70; 90; 110; 130; 150) is present which is airtightly connected to both flanges along the entire outer circumference of the flanges.
    An assembly according to claim 13 or 14, characterized in that the sealing ring (90; 110; 130; 150) is not only on the outer edge (87a; 127a) of the flanges
    10 (87; 107; 127) but also on the opposite sides (87b; 107b) of the flanges.
    An assembly according to claim 13, 14 or 15, characterized in that the sealing ring (90; 150) is weakened at a location (95; 155) along the circumference and is provided with a protruding release tab on one side of the weakening ( 93; 153).
    17. Method for manufacturing the assembly according to any of the preceding claims 13-16, characterized in that the two capsules (61; 81; 101; 121; 141) are brought together with the films (69) in an injection molding machine are pressed against each other, the sealing ring (70; 90; 110; 130; 150) being injection molded around the flanges (67; 87; 107; 127).
    [2]
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    同族专利:
    公开号 | 公开日
    NL2020415B1|2021-10-14|
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    WO2018147740A1|2018-08-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102007060150B4|2007-12-13|2010-01-21|Inde Plastik Betriebsgesellschaft Mbh|Closed sachet with sealing ring and packaging for the production thereof|
    AT529248T|2008-07-15|2011-11-15|Nestec Sa|METHOD FOR APPLYING A LIQUID GLUE TIP TO A CAPSULE|
    ES1073281Y|2010-10-19|2011-03-11|Montoya Ivan Sierra|COFFEE OR INFUSION CAPSULE|
    ES1077395Y|2012-06-26|2012-10-15|Solubles S A Prod|Capsule to prepare infusions|
    RU2699455C2|2015-04-27|2019-09-05|Ново Капсьюл Аг|Capsule for use in beverage preparation apparatus|
    JP6962821B2|2015-05-15|2021-11-05|コーニンクラケ ダウ エグバート ビー．ブイ．|Capsules, systems for preparing drinkable beverages from such capsules, and how to use such capsules in beverage preparation equipment.|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2018369|2017-02-13|
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