초록
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The invention relates to a device for storing and dispensing a flowable composition. Said device comprises a first (1 ) and a second film (2), a dispensing zone (4), a first chamber (5), containing a first substance (A) and a second chamber (6), containing a second substance (B). Said chambers are interconnected by a transition zone (3) that can be selectively opened. At least one of the films is deep-drawn in the region of the chambers and at least one of the films is pre-formed in the region of the second chamber, in such a way that once the device has...
The invention relates to a device for storing and dispensing a flowable composition. Said device comprises a first (1 ) and a second film (2), a dispensing zone (4), a first chamber (5), containing a first substance (A) and a second chamber (6), containing a second substance (B). Said chambers are interconnected by a transition zone (3) that can be selectively opened. At least one of the films is deep-drawn in the region of the chambers and at least one of the films is pre-formed in the region of the second chamber, in such a way that once the device has been activated by opening the transition zone, the first substance can to a great extent be completely transferred to a second chamber, increasing the volume of said chamber as a result.
대표
청구항
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The invention claimed is: 1. A device, comprising a first and a second film, a dispensing zone, a first chamber, containing a first substance, and a second chamber, containing a second substance, the chambers being connectable to each other via a transition zone that is selectively openable, at least one of the films being thermoformed in an area of the chambers, and at least one of the films having a portion which is deformable in an area of the second chamber in such a way that, after activation of the device, with the transition zone being opened, th...
The invention claimed is: 1. A device, comprising a first and a second film, a dispensing zone, a first chamber, containing a first substance, and a second chamber, containing a second substance, the chambers being connectable to each other via a transition zone that is selectively openable, at least one of the films being thermoformed in an area of the chambers, and at least one of the films having a portion which is deformable in an area of the second chamber in such a way that, after activation of the device, with the transition zone being opened, the first substance is transferable substantially completely into the second chamber, with an increase in volume of said second chamber, without any appreciable flowing back of a mixture into the first chamber occurring; wherein, said deformable portion comprises a portion of said film which is preformed into a first surface configuration which provides a first volume for said second chamber, and is substantially non-reversibly deformable in response to pressure applied to an interior of the second chamber, to assume a second surface configuration which provides ea second volume for said second chamber, which is greater than said first volume. 2. The device according to claim 1, wherein at least one of the first and second films is concavely-convexly deformed in the area of the second chamber. 3. The device according to claim 1, wherein at least one of the films has in the area of the second chamber a form which is obtainable by at least partially forming a depression into an initially concavely formed surface. 4. The device according to claim 3, wherein the first film is coextensive with the second film at least in an area of said chambers, and is sealed in a peelable manner at a point of contact with said other film. 5. The device according to claim 1, wherein the films forming the chambers are pre-formed such that the films are separable from each other, at least in an edge zone of the second chamber. 6. The device according to claim 1, wherein at least one of the films is expandable in the area of the second chamber. 7. The device according to claim 1, wherein the second chamber is connectable to the dispensing zone via a second transition zone that is selectively openable. 8. The device according to claim 2, wherein the second chamber is connectable to the dispensing zone via a second transition zone that is selectively openable. 9. The device according to claim 3, wherein the second chamber is connectable to the dispensing zone via a second transition zone that is selectively openable. 10. The device according to claim 5, wherein the second chamber is connectable to the dispensing zone via a second transition zone that is selectively openable. 11. The device according to claim 6, wherein the second chamber is connectable to the dispensing zone via a second transition zone that is selectively openable. 12. The device according to claim 1, wherein a third chamber is located between the first chamber and the second chamber in the transition zone that is selectively openable. 13. The device according to claim 2, wherein a third chamber is located between the first chamber and the second chamber in the transition zone that is selectively openable. 14. The device according to claim 5, wherein a third chamber is located between the first chamber and the second chamber in the transition zone that is selectively openable. 15. The device according to claim 6, wherein a third chamber is located between the first chamber and the second chamber in the transition zone that is selectively openable. 16. The device according to claim 1, wherein a third film, which protrudes into the second chamber, is attached to one of the films forming the chambers in the transition zone between the two chambers. 17. The device according to claim 2, wherein a third film, which protrudes into the second chamber, is attached to one of the films forming the chambers in the transition zone between the two chambers. 18. The device according to claim 6, wherein a third film, which protrudes into the second chamber, is attached to one of the films forming the chambers in the transition zone between the two chambers. 19. The device according to claim 7, wherein a third film, which protrudes into the second chamber, is attached to one of the films forming the chambers in the transition zone between the two chambers. 20. The device according to claim 1, wherein the chambers have different volumes before activation. 21. The device according to claim 1, further comprising an applicator. 22. The device according to claim 1, wherein the applicator is located in the dispensing zone. 23. The device according to claim 1, wherein the first substance is flowable and the second substance is solid. 24. The device according to claim 1, wherein flow barriers are located in the dispensing zone. 25. The device according to claim 1, wherein the transition zone that is selectively openable by exposure to a hydrostatic pressure in a range from 3 to 300 N/cm2. 26. A method of using the device according to claim 1, said method comprising: storing first and second substances in said first and second chamber; mixing said first substance into said second substance by applying pressure to said first chamber, whereby said first substance flows through said transition zone and enters said second chamber, such that the volume of the second chamber is substantially non-reversibly enlarged to accommodate entry of said first substance; and dispensing said first and second substances from said second chamber via dispensing zone. 27. The method according to claim 26, wherein the flowable compositions are chosen from: human and veterinary medicaments, wound cleaning agents, dental products, adhesives, impression materials, paints, or foods. 28. A method of making a device, comprising: a) providing a first film, b) partially thermoforming the first film, thereby forming two chambers, c) filling the two chambers with two substances to be mixed in use, d) applying a second film, and e) connecting the second film to the first film substantially in surface-area contact, leaving the chambers free and forming a transition zone that is selectively openable between the two chambers; wherein said second chamber is plastically deformable in response to an application of pressure to an interior thereof; and said plastic deformation causes said second chamber to assume a configuration in which a volume of said second chamber is substantially non-reversibly increased relative to said volume before said plastic deformation. 29. The method according to claim 28, wherein the second film is pre-formed in a convex or wave-shaped manner in an area of the second chamber before applying the second film. 30. The method according to claim 28, wherein a third film is connected to the first film in the transition zone before applying the second film. 31. A dispensing device comprising: a first film, a second film, a dispensing area, a first chamber containing a first substance, a second chamber containing a second substance being formed by the films, and an openable transition area connecting the chambers, wherein the first film is thermo-formed in an area of the chambers, and at least one of the films is pre-formed or plastically deformable in an area of the second chamber in order to operatively provide a substantially non-reversibly increased volume for the second chamber, whereby said second chamber accepts and retains substantially all of the first substance transferred from the first chamber via the transition area. 32. A device comprising: a base film and a cover film which are adhered to each other and have first and second chambers formed therebetween; a first substance contained in said first chamber, and a second substance contained in said second chamber; a transition zone formed between said dbase film and said cover film, said transition zone extending from said first chamber and said second chamber being selectively openable to provide a fluid flow connection between said first and second chambers; wherein, said second chamber is substantially non-reversibly deformable in response to pressure applied to an interior thereof, whereby its volume is substantially non-reversibly increased; said transition zone is openable in response to pressure applied therein by a deformation of said first chamber which decreases its volume and forces substantially all of said first substance to flow through said transition zone and into said second chamber, whereby said volume of the second chamber is increased by substantially irreversible deformation thereof, such that substantially all of said first substance remains in said second chamber after said deformation of said first chamber. 33. The device according to claim 32, wherein: said base film has first and second substantially concave depressions formed therein, which concave depressions form a first boundary of said first and second chambers; said cover film forms a second boundary which closes off said first and second chambers; and said cover film has a depression pattern formed therein in a vicinity adjacent said second chamber, which depression pattern permits a substantially non-reversible expansion of said cover film outwardly away from said concave depression of said second chamber. 34. The device according to claim 32, wherein: said base film has first and second substantially concave depressions formed therein, which concave depressions form a first boundary of said first and second chambers; said cover film forms a second boundary which closes off said first and second chambers; and said base film is reversibly adhered to said cover film in a peripheral area of said second chamber and is plastically deformable, whereby said dbase film is detachable from said cover film in said peripheral area, such that it is expandable substantially non-reversibly outwardly away from the cover film and the volume of the second chamber is substantially non-reversibly increased, in response to an application of pressure to an interior of aid second chamber. 35. The device according to claim 33, wherein said depression pattern comprises a concave depression in said cover film, which concave depression projects into said concave depression of the base film which founds the second chamber, said concave depression of the said second chamber being plastically deformable to a configuration in which it extends outwardly away from said cover film. 36. The device according to claim 33, wherein said depression pattern comprises a ruffed pattern in said cover film, which ruffed pattern projects into said concave depression of the base film which founds the second chamber, said ruffed pattern of the said second chamber being plastically deformable to a configuration in which it extends outwardly away from said cover film.
