DE20309546U1 - Dosing unit for viscous substances, comprises a film carrier with a depression for the substance, a cover film, a threshold breakage point, and an application channel - Google Patents

Abstract

An arrangement for storing viscous substances, comprises a film carrier (2) with a depression (3) on at least one side, into which the substance can be filled and then covered with a film (4) to form a chamber (5). The chamber has a threshold breakage point (8), which allows the viscous substance to flow out along a channel (9) when pressure is applied. The chamber contains an insert made of a stiff material arranged at an angle. The film consists of a thermoplastic.

Description

-1 - Khl&Schaafhausen

PATENT ATTORNEYS

Device for storing and dispensing viscous substances

The invention relates to a device for storing and dispensing viscous substances with a, for example, film-like carrier in which at least one recess open on one side is formed, so that at least one substance can be introduced into each recess and then closed off from the outside with a cover film to form a chamber.

In this context, viscous substances are understood to mean all flowable, i.e. liquid to pasty substances, which can also be gel-like, for example. If several recesses are provided in the device according to the invention for receiving a substance each, at least one of these substances must be viscous, while the other substances can also be viscous or, for example, powdery.

The viscous substances are, for example, adhesives or sealing materials, such as those used in dental technology. In such applications, the individual components are currently stored separately, for example in bottles. In the dental field, only very small quantities are usually used, for example between 0.01 and 10 ml. Storing the components, which in some cases have to be mixed before use, in individual bottles and then mixing them in a crucible or similar has the disadvantage that the components are exposed to the environment before they are mixed and, for example, solvents can escape or - especially in the case of light-curing substances - hardening can begin before and/or during mixing. In addition, dosing such small quantities is difficult, so that the desired mixing ratio is not achieved precisely. After they have been mixed, the substances are

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-2- Keil&Schaafhausen

PATENT ATTORNEYS

For example, it is applied to the application site using a brush or similar tool, which also creates the risk of contamination of the individual components stored in the bottles. So-called "one-bottle" systems are also known, in which a substance can be applied from a bottle using a brush or similar applicator.

DE 37 17 512 A1 discloses a liquid container in the form of an elongated, flat bag which is divided into two compartments. The first compartment contains two chambers arranged one above the other and separated from each other, and the second compartment contains a single third chamber which is separated from the first two chambers. The first two chambers are formed by two outer films and a single middle film arranged between the outer films, the peripheral edges of which are sealed. The first two chambers are filled with different liquids. The third chamber, which is directly adjacent to the first two chambers and is formed only by the two outer films of the first two chambers, does not contain any liquid. The first two chambers merge into a tip pointing towards the third chamber, the sealed edges of which have a lower bond strength than those of the sealed peripheral edges. The container enables the mixing of at least two liquids, possibly also with a non-liquid substance. At the end of the third chamber facing away from the first two chambers, a tear-open point in the form of tear notches is provided in the edges of the two outer films. By tearing off the end part of the third chamber at this point, the liquid content can escape from the third chamber.

The disadvantage of the known liquid container is, on the one hand, the difficulty of introducing the components to be mixed together during production and, on the other hand, the inconvenience of emptying the third chamber during handling, since tearing off its end part causes difficulties.

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- 3 - KEIL& SCHAAFHAUSEN

PATENT ATTORNEYS

or requires a tool such as a knife or scissors, which entails the risk of splashing the mixed liquids. In addition, two hands are required for complete emptying, as the container must be compressed flat to dispense the liquid so that the liquid is not simply moved within the container. In addition, dosing the amount of liquid dispensed from the container is almost impossible.

DE 37 26 876 A1 discloses a container for the separate storage of at least two products, which has two separate compartments and a film that closes them. In one of the compartments, which is additionally closed by another inner film spaced apart from the first film, an annular insert is provided, which is provided with a row of teeth on the side facing the films. To open the compartment, pressure is exerted on the insert via the container wall so that the teeth of the ring cut through the inner film of the ring and the product can be dispensed into the second compartment. Several through-openings are provided in the insert so that a liquid held in the compartment can also flow through the annular insert into the second compartment, where it is mixed with a base product. After removing the first film, which covers the entire container, the fully mixed product can be removed from the second container, for example with an applicator. Even with this container it is not possible to precisely dose the amount of liquid transferred from the first compartment to the second compartment.

It is therefore an object of the present invention to propose a device for storing and dispensing viscous substances as a functional packaging, which is easy to manufacture, space-saving to store and easy to use, whereby even small amounts of substances can be applied in a precisely dosed manner.

18 June 2003 K 12 G 21

KEIL & SCHAAFHAUSEN

PATENTS ATTORNEYS

This object can be achieved according to the invention by a device for storing and dispensing viscous substances, which has a film-like carrier, for example, in which at least one recess is formed, so that at least one substance can be introduced into the at least one recess and then closed off from the outside with a cover film to form at least one chamber, such that a dispensing channel remains which opens via a predetermined breaking point when pressure is applied to at least one of the chambers and the viscous substance emerging from the dispensing channel can thus be applied to an application site, wherein an insert made of essentially rigid, unyielding material and/or a layer made of essentially rigid, unyielding material is arranged in the chamber opposite the at least one recess. The insert can have a flat, stepped, curved or inclined surface for dispensing the viscous substance. Emptying a substance from the normally dome-shaped depression can be made easier by providing the insert or the rigid layer, while at the same time preventing the substance from flowing back. When the depression is pressed together between two fingers, it dents locally, bringing the surface of the insert closer to the cover film. The use of an insert in the depression therefore ensures that the chamber can be completely emptied by applying pressure to the insert arranged in the depression. The rigid layer provided as an alternative or in addition to the insert serves as a counter-bearing for the pressure applied to the depression and thus also makes it easier to empty the chamber.

Preferably, the insert is secured in the chamber, e.g. glued to it, in such a way that the surface of the insert, i.e. the side facing the cover film, forms an acute angle with it. For this purpose, the insert can have a slanted surface or be arranged at an angle within the recess.

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patent attorneys

The greater distance between the surface of the insert and the cover film is on the side of the discharge channel, so that in order to empty the chamber, the surface of the insert must be brought into an essentially parallel alignment with the cover film. At the same time, it is ensured that the insert does not hinder the discharge of the substance, for example by blocking the discharge channel.

Very precise dosing when applying the substance to the application site is made possible by the fact that the surface of the insert has one or more steps that run perpendicular to the direction of the application channel. The surface of the insert can therefore be moved step by step towards the cover film. By choosing the appropriate step size, the amount of substance discharged from the chamber in each individual application step can be adjusted. A constant dosing amount of the substance can be achieved with each step by reducing the length of the steps depending on their distance from the cover film.

In the same way, the insert can be brought closer to the cover film in defined steps if the insert has a locking rod. Such a locking rod can be, for example, a rod with locking elements around which the insert can be pivoted in defined steps. However, the locking rod can also be designed as a pin protruding from the surface of a first insert with locking elements on its circumference, which engages in a corresponding recess in a second insert, for example opposite the first insert, in order to gradually bring the two inserts closer together. Alternatively, it is also possible to provide projections and recesses in inserts that are opposite one another, which lock together or engage with one another when the two inserts come closer together.

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■ «

- 6 - KEIL& SCHAAFHAUSEN

PATENT ATTORNEYS

In order to store a larger amount of a single substance or several different substances in the device according to the invention, several recesses can be provided in the carrier to form chambers next to one another or one behind the other. The chambers can be connected to one another via connecting channels, each of which has a predetermined breaking point that opens when pressure is applied to the respective chamber. In the same way, the individual chambers can be connected to a common discharge channel via one or more connecting channels. It is also possible to discharge the substances simultaneously or one after the other through discharge channels that are parallel to one another. The chambers are therefore arranged either for the parallel (simultaneous) or serial (time-delayed) discharge of substances. In the serial arrangement of two chambers, each chamber is preferably sealed by a cover film so that when a first substance is discharged, it does not mix with a second substance held in the second chamber. In principle, individual or all chambers can be sealed by a common cover film or separate sections of a cover film. If only some chambers are sealed with a cover film, the remaining chambers can be closed by opening or folding this cover film over the unsealed chambers.

According to a preferred embodiment of the invention, by folding the carrier, recesses associated with one another are folded onto one another in such a way that the cover films covering the chambers or the recesses in the carrier essentially lie on top of one another. The channels for discharging the substances from the chambers also lie on top of one another after the chambers have been folded onto one another and can open into a common mixer or discharge channel. In this way, the chambers formed by the recesses associated with one another can be emptied simultaneously by pressing the chambers against one another.

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- 7 - KEIL& Sa-IAAFHAUSEN

PATENT ATTORNEYS

By pressing once on the two chambers of the device according to the invention, either a larger quantity of a single substance can be discharged or different substances can be emptied from the device at the same time.
5

If the cover film that closes the chambers is made of a rigid material, then when two chambers are folded on top of each other, the pressure when a substance is dispensed from one chamber is not transferred to the other chamber. The rigid material acts as a counter-bearing, so that the chambers open almost simultaneously when pressure is exerted on them by, for example, the thumb and index finger. The same effect can also be achieved by inserting a rigid plate between two cover films, which may be elastic, and which rests on the carrier. It is not absolutely necessary for an insert to be provided in one or both chambers.

It is preferred if, regardless of the features described above, a mixing device or an applicator for dispensing and applying the substances is provided in or on the dispensing channel, which can be attached and/or inserted if necessary. Such a mixing device can, on the one hand, bring about a uniform mixing of two different substances accommodated in the device or can also be used to achieve a desired consistency of a single substance.

In a further development of the inventive concept, the mixing device or the applicator is provided with a tubular area that can be plugged onto the dispensing channel, for example, and in the inside of which two opposing radial grooves are made. The dimensions of the grooves correspond to those of the carrier. In this way, the areas of the carrier that are folded onto one another, for example, can be inserted together into the grooves of the mixing device and thus preferably in a press fit.

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8th -

KEIL & SCHAAFHAUSEN

PATENTS ATTORNEYS

The mixing device can thus be connected to the device for storing and dispensing viscous substances in an essentially liquid-tight manner.

A particularly good mixing result can be achieved if the mixing device has a mixer helix. Such a mixing device can also be mass-produced at low cost. Alternatively, the mixer helix or an applicator, such as a brush, an application tube or the like, can also be provided directly in the application channel.

A solution for the device according to the invention which is simple in terms of production technology is achieved in particular when the carrier and the cover film are designed in strip form, wherein the carrier is preferably made of a possibly thermoplastic material and the cover film is made of an aluminum composite film.

In this case, several carriers and/or cover films can be connected to one another in a chain-like manner, e.g. tearable due to weakening lines and/or perforations, for example via film-like joints, so that several individually lined up storage and dispensing devices according to the invention can be wound up into a roll or folded together in meanders in a space-saving manner.

Further aims, features, advantages and possible applications of the invention emerge from the following description of embodiments with reference to the drawing. All described and/or illustrated features form the subject matter of the invention on their own or in any combination, also independently of their summary in individual claims or their reference back to one another.

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- 9 - KEIL& SCHAAFHAUSEN

PATENT ATTORNEYS

They show schematically:

Fig. 1 shows a device according to a first embodiment of the invention with

a single chamber,
5

Fig. 2 shows a device according to a second embodiment of the invention with two chambers,

Fig. 3 shows a device according to a third embodiment of the invention with two chambers and a mixing device,

Fig. 4 shows a device according to a fourth embodiment of the invention with two chambers and a mixing device,

Fig. 5 a mixing device seen in the direction of arrow V in Fig. 4,

Fig. 6 a device according to a fifth embodiment of the invention with four chambers and an applicator,

Fig. 7 is a side view of the device according to Fig. 6,

Fig. 8 shows a device according to a sixth embodiment of the invention with two chambers,

Fig. 9 a device according to a seventh embodiment of the invention with two chambers and

Fig. 10 a device according to another embodiment of the invention

with four chambers.
30

18 June 2003 K 12 G 21

KEIL & SCHAAFHAUSEN

PATENT ATTORNEYS

The device 1 for storing and dispensing a viscous substance (not shown in the figures), shown schematically in vertical longitudinal section in Fig. 1, is formed from a first film-like carrier 2 which has a recess 3 which is open at the top in the figure. A cover film 4 is applied to the carrier 2 in a liquid-tight manner so that the recess 3 in the carrier 2 forms a closed chamber 5 with the cover film 4.

An insert 6 made of a substantially rigid material is secured in the recess 3 of the carrier 2, for example by gluing. The flat surface of the insert 6 is aligned at an angle to the cover film 4 and forms an acute angle with it.

The hermetic connection between the cover film 4 and the carrier 2 is achieved, for example, by welding and gluing in the edge area of the carrier and the film, as indicated by reference number 7. On the right-hand side in the figure, the connection area between the cover film 4 and the carrier 2 is provided with a predetermined breaking point 8 such that this opens under increased internal pressure in the chamber 5 and releases a discharge channel 9 between the carrier and the cover film. This can be done, for example, in the device 1 described in such a way that the recess 3 of the carrier 2 and the area of the cover film 4 opposite the recess 3 are pressed against each other between the thumb and forefinger of one hand, so that the insert 6 is pressed against the cover film 4. This increases the pressure of the viscous substance contained in the chamber 5 such that the predetermined breaking point 8 is pierced and the substance can escape from the discharge channel 9. The insert 6 ensures that the substance contained in the chamber 5 is discharged as completely as possible through the discharge channel 9, wherein the insert 6 pivots during the emptying of the chamber 5 into a position in which its surface is aligned substantially parallel to the cover film 4.

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-11 - Keil&Schaafhausen

PATENT ATTORNEYS

In the device 1 shown schematically in vertical longitudinal section in Fig. 2, two depressions 3a and 3b of different sizes are formed in the carrier 2, which together with the cover film 4, which closes both depressions 3a and 3b, form a first chamber 5a and a second chamber 5b. The cover film 4 is hermetically connected to the carrier 2 by a seal 7, wherein in the area of the dispensing channel 9 a predetermined breaking point 8 is provided in the connecting area between the cover film 4 and the carrier 2. The two chambers 5a and 5b are connected to one another via a connecting channel 10, which is formed between the cover film 4 and the carrier 2. The connecting channel 10 can also be closed with a predetermined breaking point 8, which can be broken through by applying pressure to the substances not shown in the figure contained in the chambers 5a and 5b.

In the right-hand chamber 5b in the figure, an insert 6' is arranged, which is provided with steps 11a and 11b in such a way that the otherwise flat surface of the insert 6 ¹ runs at different angles to the cover film 4. In the recess 3a that forms the chamber 5a, an insert 6 is introduced, the flat surface of which runs essentially parallel to the cover film 4. A substance contained in the chamber 5a, which can be different from or the same as the substance contained in the chamber 5b, can be transferred to the chamber 5b in the manner described above, for example by applying pressure to the recess 3a and the area of the cover film 4 opposite the recess 3a using the index finger and thumb of one hand. To dispense substances from the chamber 5b, pressure is applied in the same way to the recess 3b and the area of the cover film 4 opposite the recess 3b. The insert 6' is initially only pivoted against the cover foil 4 until the first step 11a rests against the cover foil 4. In this way, depending on the design of the

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12 - KE1L&SCHAAFHAUSEN

PATENT ATTORNEYS

Steps discharge a predeterminable amount of the substance contained in the chamber 5b. When the depression 3b is pressed further against the cover film 4, the insert 6' pivots further in the direction of the cover film 4 until first the second step 11b and then also the right-hand area of the surface of the insert 6' in the figure rests against the cover film 4 and the chamber 5b is thus largely emptied. The mixed substances are discharged together from the device 1 via the discharge channel 9, whereby the predetermined breaking point 8 is broken open.

In the embodiment shown in Fig. 3, two recesses 3a and 3b of essentially the same size and shape are also provided in the film-like carrier 2. At a weakened fold line 12, for example, two areas 2a and 2b of the carrier 2 can be folded onto one another in such a way that the recesses 3a and 3b are essentially opposite one another. One or both of the recesses 3a and 3b can be closed by preferably two cover films or two sections of a common cover film folded onto one another or, as shown in the figure, by a single, common cover film 4 in order to form two opposite chambers 5a and 5b. On the right-hand side of the device 1 in the figure, the two areas 2a and 2b form a discharge channel 9 between them, which is closed by a predetermined breaking point 8. Inserts 6 are arranged in the recesses 3a and 3b in such a way that their surfaces form an acute angle to each other and to the cover film 4. The surfaces of the inserts 6 move away from each other in the direction of the discharge channel 9. In this way, the substances contained in the chambers 5a and 5b can be discharged simultaneously from the device 1 through the discharge channel 9 when pressure is exerted on the two opposing recesses 3a and 3b in the carrier 2. In order to achieve a thorough mixing of the different substances in the chambers 5a and 5b, for example, a mixing device 13 with an inner mixing helix 13a is arranged on the discharge channel 9.

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- 13 - KEIL&SCHAAFHAUSEN

PATENT ATTORNEYS

The mixing device also serves as an applicator for applying the substance(s). Alternatively, the mixing helix can be inserted into any applicator designed differently from the one shown in the figure or directly into the application channel 9.
5

Fig. 4 shows a schematic vertical longitudinal section of a further embodiment of the device 1 for storing and dispensing viscous substances, in which two depressions 3a and 3b of essentially the same size and shape are formed in the carrier 2. Two carrier sections 2a and 2b are folded towards one another along a fold line 12. The depressions 3a and 3b are hermetically sealed by a seal 7 via a cover film 4a or 4b, respectively, so that two chambers 5a or 5b are formed in the depressions 3a and 3b. Between the cover films 4a and 4b and the carrier 2, a discharge channel 9 is formed which runs from the chambers 5a or 5b in the direction of the fold line 12 and is closed by predetermined breaking points 8. The cover films 4a and 4b abut one another in the area of the fold line 12 in such a way that the two discharge channels of the chambers 5a and 5b continue to the left between the cover films 4a and 4b in the figure. A mixing device 13 (applicator) with a mixing helix 13a is inserted or plugged onto the discharge channel 9 and the cover films 4a and 4b.

If the carrier sections 2a and 2b are now pivoted further towards each other so that the depressions 3a and 3b, in each of which an insert 6 is provided, abut against each other, the pressure building up in the chambers 5a and 5b pierces the predetermined breaking points 8 in the discharge channel 9 so that the substances contained in the chambers 5a and 5b are discharged from the device 1 through the discharge channel 9 and the mixing device 13. In the mixing helix 13a of the mixing device 13, the substances discharged from the chambers 5a and 5b, which can be identical or different, are mixed with one another.

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- 14 - KE1L& SCHAAFHAUSEN

PATENT ATTORNEYS

The mixing device 13 is, as shown schematically in the enlarged sectional view of Fig. 5, formed from a cylindrical body with a central through-bore 13b, in which the mixing helix 13a is also accommodated. Furthermore, two opposing radial grooves 14 are provided in the mixing device 13, which extend from the edge of the bore 13b to the vicinity of the outer wall of the mixing device. The dimensions of the grooves 14 and the through-bore 13b are selected such that two superimposed sections of the carrier 2 or the cover film 4 can be accommodated in each of the grooves, while the discharge channel 9 is preferably held in a sealing manner in the through-bore 13b. In this way, it is avoided that the substances discharged from the chambers 5a or 5b flow out at the end of the mixing device 13 facing the bend line 12. Rather, the entire volume of the substances discharged from the two chambers is fed directly to the mixing helix 13a via the discharge channel 9 and, mixed together, is discharged at the tip of the mixing device 13 facing away from the bend line 12.

The design and arrangement of the inserts 6 or 6' in the recesses 3, 3a or 3b of the device 1 can be adapted depending on the requirements for the discharge of the substances contained in the chambers 5, 5a or 5b. For example, it is possible to align all inserts 6 with their surface at an angle or parallel to the cover film 4. Furthermore, one or more steps 11 can also be provided in the insert 6' in order to discharge defined quantities of the viscous substances from the chambers.

To apply the substances to an application site, an applicator 15, such as a brush, can be provided in the application channel 9 or arranged adjacent to it, as shown in Figures 6 and 7. For hygienic reasons, the applicator is sealed in a film or is surrounded by a

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- 15 - KEIL& SCHAAFHAUSEN

PATENT ATTORNEYS

Cap 16 is enclosed, which can be separated from the carrier 2 along a perforation 17. Only when the device according to the invention is used is this cap 16, which serves as a protective cover, opened or torn off, so that the substance emerging from the dispensing channel 9 can be applied to a tooth, for example, using the applicator 15. As shown in Figures 6 and 7, the carrier sections 2a and 2b can be folded onto one another along the weakening lines 18, so that the depressions 3a and 3b rest on the depressions 3c and 3d, respectively. Two cover films 4, shown in diamond-shaped hatching in Figure 6, are arranged between the depressions 3b and 3d, while the depressions 3a and 3c form a common chamber.

Another embodiment of the inserts 6 is shown schematically in Figure 8. In two opposing chambers 5a, 5b, inserts 6a, 6b are provided which interact with one another, one of which is provided with a locking rod 19 with locking elements 19a and the other with a corresponding bore 20. If the inserts 6a, 6b are pressed against one another, a resistance can be felt or a noise can be heard when the locking elements 19a engage in the bore 20, so that the user recognizes that a defined amount of the substance has been dispensed. In this way, even very small amounts of the substance to be dispensed can be dosed, as is necessary, for example, with dental bleaching material.

As an alternative to the design of the inserts shown in Figure 8, these can also be provided with several projections 19' and corresponding recesses 20', as shown in Figure 9, in order to facilitate the dosing of the substance to be dispensed. In this embodiment too, when the projections 19' engage in the recesses 20', a resistance can be felt or a noise can be heard, so that the user recognizes that a defined amount of the substance has been dispensed. The projections 19' in the recesses

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- 16 - KEIL& SCHAAFHAUSEN

PATENT ATTORNEYS

The projections 20' are preferably arranged relative to one another in such a way that the same volume is discharged between the engagement of two adjacent projections 19' in the recesses 20'.

In the embodiments according to Fig. 8 or 9, the chambers 5a and 5b can be separated from one another by one or more cover films (not shown). These cover films are pierced by the locking rod 19 or the projections 19' when the inserts 6a, 6b are pressed against one another.

Fig. 10 shows a further embodiment which has four recesses 3a to 3d and correspondingly four chambers 5a to 5d in two carrier sections folded onto one another along the fold line 12. The chambers are closed by cover films 4a and 4b, each of which is sealed off from the carrier sections by a circumferential seal 7 with predetermined breaking points 8. If, for example, viscous substances are accommodated in the chambers 5b and 5d, these can be introduced into the chamber 5a serving as the mixing chamber by pressure. The predetermined breaking points 8 of the seal 7 are severed so that a connecting channel 10 is formed between the chambers 5a, 5b and 5d. On the lower side of the cover film 4b in the figure, no predetermined breaking point is provided in the seal 7, so that the chamber 5c remains sealed off from the connecting channel 10.

A mixing ball 21 is provided in the chamber 5a, with which the substances can be mixed by shaking. In order to be able to completely discharge the mixed substances from the chamber 5a through the discharge channel 9, the chamber 5c opposite this chamber 5a is designed in such a way that the mixing ball 21 can be pressed through the cover film into the chamber 5c. As an alternative to the design of the chamber 5c shown in Fig. 10, this can also be essentially the same size as the rest of the chambers.

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-17- KEIL& SCHAAFHAUSEN

PATENTS ATTORNEYS

mem 5a, 5b and 5d and be provided with an insert into which the mixing ball 21 can be accommodated when the chamber 5a is to be emptied. Several mixing balls 21 can also be provided in the chamber 5a. The chamber 5c or an insert arranged in it is then preferably designed to accommodate several balls.

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18 - KEIL& SCHAAFHAUSEN

PATENT ATTORNEYS

List of reference symbols:

1 Storage and discharge device 2 carrier 2a, 2b Beam sections 3, 3a, 3b, 3c, 3d Deepenings 4, 4a, 4b Covering film 5, 5a, 5b, 5c, 5d chamber 6, 6 ¹ , 6a, 6b inlay 7 sealing 8th Predetermined breaking point 9 Discharge channel 10 Connecting channel 11 Level 12 crease line 13 Mixing device 13a Mixed helix 13b Through hole 14 Groove 15 Applicator 16 cap 17 perforation 18 Line of weakness 19, 19' Locking rod (projection) 19a Locking element 20, 20' Borehole (depression) 21 Mixing ball

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Claims (17)

1. Device for storing and dispensing viscous substances with a e.g. B. film-like carrier ( 2 ) in which at least one recess ( 3 , 3a , 3b , 3c , 3d ) open on one side is formed, so that at least one substance can be introduced into the at least one recess ( 3 , 3a , 3b , 3c , 3d ) and then closed off from the outside with a cover film ( 4 , 4a , 4b ) to form at least one chamber ( 5 , 5a , 5b , 5c , 5d ) in such a way that a dispensing channel ( 9 ) remains which opens via a predetermined breaking point ( 8 ) when pressure is applied to at least one of the chambers ( 5 , 5a , 5b , 5c , 5d ) and thus the viscous substance emerging from the dispensing channel ( 9 ) can be applied to an application site, wherein in the chamber ( 5 , 5a , 5b , 5 c, 5 d) an insert ( 6 , 6 ', 6 a, 6 b) made of substantially rigid, unyielding material and/or a layer ( 4 , 4 a, 4 b) made of substantially rigid, unyielding material is arranged opposite the at least one recess ( 3 , 3 a, 3 b, 3 c, 3 d). 2. Device according to claim 1, characterized in that the insert ( 6 , 6 ', 6a , 6b ) has a flat, stepped, curved or inclined surface. 3. Device according to claim 1 or 2, characterized in that the surface of the insert ( 6 , 6 ', 6a , 6b ) forms at least one acute angle with the cover film ( 4 ) and slopes down in the direction of the discharge channel ( 9 ). 4. Device according to one of claims 1 to 3, characterized in that the surface of the insert ( 6 , 6 ', 6a , 6b ) has one or more steps ( 11 ) running transversely to the direction of the discharge channel ( 9 ). 5. Device according to claim 4, characterized in that the length of the steps ( 11 ) decreases depending on their distance from the cover film ( 4 ). 6. Device according to one of the preceding claims, characterized in that the inserts ( 6 a, 6 b) have locking rods ( 19 ). 7. Device according to one of the preceding claims, characterized in that in the carrier ( 2 ) several recesses ( 3a , 3b ) for forming chambers ( 5a , 5b , 5c , 5d ) are provided next to one another or one behind the other, which are connected to one another with a discharge channel ( 9 ) e.g. via a connecting channel ( 10 ) which optionally opens via a predetermined breaking point ( 8 ) when pressure is applied to the respective chamber ( 5a , 5b , 5c , 5d ). 8. Device according to claim 7, characterized in that by folding the carrier ( 2 ) mutually associated recesses ( 3 a, 3 b) are folded onto one another in such a way that the cover films ( 4 ; 4 a, 4 b) covering the chambers ( 5 a, 5 b, 5 c, 5 d) or the recesses ( 3 , 3 a, 3 b, 3 c, 3 d) in the carrier ( 2 ) lie substantially on top of one another. 9. Device, in particular according to one of the preceding claims, for storing and dispensing viscous substances with a. B. film-like carrier ( 2 ) in which at least two recesses ( 3 , 3a , 3b , 3c , 3d ) open on one side are formed, so that at least one substance can be introduced into the recesses ( 3 , 3a , 3b , 3c , 3d ) and then closed off from the outside with a cover film ( 4 ) to form chambers ( 5 , 5a , 5b , 5c , 5d ) in such a way that a dispensing channel ( 9) remains which opens via a predetermined breaking point (8 ) when pressure is applied to at least one of the chambers ( 5 , 5a , 5b , 5c , 5d ) and the viscous substance emerging from the dispensing channel ( 9 ) can thus be applied to an application site, characterized in that in or on the dispensing channel (9 ) there is a possibly attachable and/or insertable mixing device ( 13 ) is provided for the substances flowing through there. 10. Device according to claim 9, characterized in that the mixing device ( 13 ) has a tubular region ( 13b ) which can be plugged onto the discharge channel ( 9 ), in the inside of which two mutually opposite radial grooves ( 14 ) are introduced, the dimensions of which are adapted to those of the carrier ( 2 ) and/or the cover film ( 4 , 4a , 4b ). 11. Device according to claim 9 or 10, characterized in that the mixing device ( 13 ) has a mixer helix ( 13a ). 12. Device according to one of the preceding claims, characterized in that the carrier ( 2 ) or the carrier sections ( 2a , 2b ) are strip-shaped. 13. Device according to one of the preceding claims, characterized in that the carrier ( 2 ) and/or the carrier sections ( 2a , 2b ) and/or the cover film ( 4 , 4a , 4b ) are formed from a possibly thermoplastic plastic. 14. Device according to one of the preceding claims, characterized in that a substantially rigid plate is provided between two opposing chambers ( 5a , 5b , 5c , 5d ) and/or the cover film(s) ( 4 , 4a , 4b ) have a greater rigidity than the carrier ( 2 ). 15. Device according to one of the preceding claims, characterized in that several chambers ( 5 a, 5 b, 5 c, 5 d) for the parallel and/or serial dispensing of substances are arranged next to one another and/or one above the other. 16. Device according to one of the preceding claims, characterized in that at least one mixing ball ( 21 ) is accommodated in a chamber ( 5a ) and a chamber ( 5c ) opposite this is designed to accommodate the mixing ball ( 21 ). 17. Arrangement of devices for storing and dispensing viscous substances according to one of the preceding claims, characterized in that several carriers ( 2 ) or carrier sections ( 2a , 2b ) and/or cover films ( 4 , 4a , 4b ) are connected to one another in a chain-like and detachable manner, e.g. tearable due to weakening lines and/or perforations, for example via film-like joints.