WO2010028749A1

WO2010028749A1 - Insert having distance-keeping cells

Info

Publication number: WO2010028749A1
Application number: PCT/EP2009/006179
Authority: WO
Inventors: Volker Bräunling; Rudolf Wagner; Thomas Arnold
Original assignee: Carl Freudenberg Kg
Priority date: 2008-09-11
Filing date: 2009-08-26
Publication date: 2010-03-18
Also published as: DE102008046894A1; BRPI0918169A2; EP2323841A1

Abstract

The invention relates to an insert for arrangement in or on textiles, comprising a carrier layer (1) and a cover layer (2), wherein a material (3) that is swellable when absorbing liquid is accommodated in cells (4) in an encapsulated manner between the carrier layer (1) and the cover layer (2), said insert being characterized with regard to the object of configuring and further improving an insert such that the same has a relatively low thickness at high flexibility in a permanent and moisture-independent manner after the cost-effective production thereof, and encloses the swellable material in a loss-proof manner, in that the cells (4) form a layer (5) that connects the carrier layer (1) and the cover layer (2) to each other, wherein the cells (4) have walls (6) made from a binding agent, said walls connecting the carrier layer (1) and the cover layer (2) and keeping them at a distance to each other.

Description

Use with distance-preserving cells

description

Technical area

The invention relates to an insert for placement in or on textiles, comprising a carrier layer and a cover layer, wherein between the carrier layer and the cover layer a swellable under liquid absorption material is received encapsulated in cells.

State of the art

An insert of the aforementioned type is already known from DE 10 2005 051 575 A1. In the generic application, the carrier layer and the cover layer form cells or chambers in which swellable material is virtually taken up in small bags. Upon swelling of the swellable material, the thickness of the insert can therefore be increased considerably.

DE 32 44 386 A1 discloses an insert in which the carrier layer and the cover layer are connected to each other by diamond-shaped stitching. The swellable material swells on moisture absorption, thereby increasing the thickness of the insert to a great extent. This is not primarily to be sealed against air or moisture. Against this background, EP 1 054 095 A2 discloses an insert in which the carrier layer and the cover layer are forced apart upon swelling of the swellable material.

WO 02/094552 A1 discloses an insert in which the carrier layer and the cover layer are connected to one another by particles of qable material, the particles being connected to one another by a binder. The swellable material swells on moisture absorption and can also increase the thickness of the insert to a great extent. Again, primarily should not be sealed against moisture.

The change in thickness of an insert can be prevented or controlled by pressing the insert between other layers.

Against this background, DE 10 2006 042 145 B3 shows a ventilation insert, which consists of seven layers. Three layers form a core element, which is enclosed on both sides by two further functional layers. The core element has two air-permeable layers which enclose a swellable material. Due to the further functional layers, the air-permeable layers of the core element are compressed in partial regions, whereby a chamber structure of regular chambers is created. For this purpose, functional layers produced by injection molding technology are used in which regularly shaped recesses are formed.

The preparation of such an insert is complicated and expensive. On the one hand, considerable efforts have to be made to produce the functional layers by injection molding technology, on the other hand, overall seven layers are joined together to make a usable insert.

Furthermore, it is disadvantageous that metal or plastic meshes whose mesh width is limited are used to form the chamber structure as functional layers. In particular, it is disadvantageous that the generic use due to its construction has a high height and is relatively stiff and inflexible. These properties are particularly disadvantageous if the use is to be sewn or glued in textiles.

Presentation of the invention

The invention is therefore based on the object to design an application of the type mentioned above and further that this has a relatively small thickness with high flexibility after cost-effective production permanently and moisture-independent and includes the swellable material captive.

The present invention achieves the aforementioned object by the features of patent claim 1.

Thereafter, the use mentioned above is characterized in that the cells form a layer which connects the carrier layer and the cover layer to each other, wherein the cells have walls of a binder, which connect the carrier layer and the cover layer and space.

According to the invention, it has first been recognized that the cells can be formed by a binder in such a way that the swellable material is taken up in a predominantly captive manner encapsulated in the cells. Next is It has been recognized that the carrier layer and the cover layer can be connected to one another by the binder and can be homogeneously spaced over the entire surface. The binder connects the cover layer with the carrier layer and encloses the swellable material captive encapsulated between the carrier layer and the cover layer. According to the invention, the walls of the cells consist of the binder. This ensures that the swellable materials are attached to the walls of the cells. A trickling or running out of the swellable material from the insert is thereby effectively avoided. Furthermore, it is ensured that the walls of the cells keep the carrier layer and the cover layer moisture-independent at a virtually constant distance from each other. Over the entire surface of the insert, the distance therefore moves moisture-independent in a certain, narrow value range. A visible to the naked eye bulging of the insert by moisture absorption does not take place. The creation of cells in a layer allows further according to the invention the production of thin and very flexible inserts, which consist of only three layers, namely the carrier layer, the layer and the cover layer. Thus, the use of cost-effective production can be easily processed in textiles and has permanently moisture-independent to a nearly constant thickness.

Consequently, the object mentioned above is achieved.

The insert could change its thickness by a maximum of 5% or increase in moisture absorption. As a result, an almost thick-constant use is realized. Advantageously, such an insert can be easily processed and used in textiles.

The walls could force the carrier layer and the cover layer to swell when swelling the swellable material to a distance that deviates at most 5% from the distance in the tocked state of the insert. This will the incoming liquid is forced to spread in the horizontal direction in use. The thickness of the insert in the dry state therefore differs almost not on the thickness of the insert in the wet state. The thickness of the insert is constant over its entire surface almost moisture-independent.

The swellable material could be accommodated in a manner encapsulated in such a way that the layer seals when the swellable material swells up. The encapsulated uptake of the swellable material in the cells allows the cells to close upon swelling of the swellable material. The layer can then fulfill the sealing function as an independent functional element. The insert does not require separate grids and elaborate injection molding constructions to control the swelling of the swellable material so as to seal against air and water through the insert.

The cells could be occluded and filled by the swollen swellable material. Due to the encapsulation of the swellable material this is enclosed in spatially limited and almost non-expandable cells. The swollen material therefore fills the cells completely and closes them against the passage of a liquid or a gas.

The carrier layer and / or the cover layer could be designed as nonwoven, nonwoven or textile or could be configured as nonwovens, nonwovens or textiles, wherein the cells form a layer and wherein the sizes of the cells are statistically randomly distributed. The use of nonwovens, nonwovens or textiles allows a particularly flat construction of the insert and makes it easily deformable. The statistically random distribution of the sizes of the cells ensures that the cells are distributed with a very high uniformity between the carrier layer and the cover layer. As a result, defects are effectively avoided. By the statistically random distribution of the sizes of the cells are also created microscopic-sized cells. By cells of microscopic extent, the reaction time of the encapsulated absorbed in the cells swellable material and thus the time to seal by the use is greatly reduced. Furthermore, it is realized that very small quantities of swellable material can be absorbed encapsulated in the cells. As a result, a fast kinetics is realized, which causes a fast response of the swellable material to liquid. As a result, a dynamic porosity of the insert is created, which is characterized by a rapid sealing against liquid passage and a quick drying in the absence of moisture.

The geometric structure of the cells could be random. A random geometric structure of the cells surprisingly shows a very rapid liquid distribution in the layer in which the cells are located. Due to the statistically random distribution of the sizes or the expansion of the cells in combination with their random structure, capillary effects occur which lead to a very rapid distribution of the liquid within the layer.

The walls of the cells could be made so stiff that the

Carrier layer and the cover layer are kept at a distance to each other, not at all swollen as well as swollen swellable material, which deviates more than 5% of the distance in the tockten state of the insert. As a result, the walls of the cells act as spacers between carrier layer and cover layer. Over an entire area of the

Einsatzes, the insert has a nearly constant thickness, since the thickness of the layer between the carrier layer and cover layer by the swelling of the swellable material almost does not change. The thickness of the insert when the swellable material is not swelled is nearly equal to the thickness of the swellable material swollen. The walls of the cells could make the layer net-like. The net-like construction lends the insert a high degree of flexibility. The insert can be rolled up or bent without the layer breaking. The reticular design also surprisingly allows non-destructive stretching of the insert.

The binder could be designed as a thermoplastic polymer compound. Thermoplastics can be melted without difficulty and can form cohesive compounds with other substances. Before this

Background is concretely conceivable that both the cover layer and the carrier layer are made of a nonwoven or nonwoven fabric. It is conceivable that the swellable material is homogeneously mixed with the binder or combined in agglomerated form with the powdered binder and is deposited on the support layer. After placing the cover, the binder can then be heated so that it melts. After cooling of the binder, the carrier layer and the cover layer are connected to each other and the swellable materials are enclosed encapsulated in cells.

The swellable material could be in particulate form and / or in fiber form. As a result, the swellable material can be applied in free-flowing form to the carrier layer.

The swellable material could form at least partially agglomerated particles with the binder. As a result, the application of the swellable material is facilitated on the carrier layer. Furthermore, the amount of swellable material can be reduced. In this way, a relatively small increase in weight can be achieved in liquid intake. The swellable material could contain superabsorbers. Superabsorbents are characterized by the fact that they can bind a large amount of liquid. In paragraph 15 of DE 10 2006 042 145 B3 swellable materials are mentioned which can be used in particle form or in fiber form in the case described here.

The swellable material could contain liquid superabsorbers. A liquid superabsorber can be configured as a suspension. Liquid superabsorbents can be distributed particularly homogeneously on the carrier layer. A liquid superabsorber is therefore easy to apply. In particular, a liquid superabsorber can be applied in the form of a pattern to the carrier layer. A superabsorber of the Sahara DEV 119 type from H & R ChemPharm, Great Britain, could be used with particular preference.

The cover layer could be made hydrophilic by a hydrophilicizing agent. This specific embodiment ensures that water can be homogeneously distributed on the cover layer and can penetrate evenly into the cells. As a result, a uniform swelling of the swellable material is realized. The uniform swelling leads to a uniform seal over the entire surface of the insert or over the entire surface of the cover layer.

The hydrophilic treated cover layer further serves as a diffusion layer, namely the horizontal distribution of the penetrating water, so that the subsequent layer is uniformly applied to the penetrating water. Furthermore, the cover layer is responsible for ensuring that the water stored in the swellable material can evaporate as quickly as possible. This is achieved by the water is transported by capillary action and concentration gradients to the outside and thus evaporates. The carrier layer could be made hydrophobic by a hydrophobing agent. This ensures that stored in the cells of water and swollen, moist swellable material is retained by the support layer and does not come into contact with the body of the wearer of a textile product. As a result, the wearing comfort of textile products, especially of shoes, is significantly improved by an effective exchange of air and by dissipation of moisture due to perspiration.

It is also conceivable to provide the cover layer hydrophobic. As a result, once penetrated water can be included within the insert.

Against this background, the insert could have an air permeability in the dry state of at least 200 dm ³ / (m ² s), preferably of at least 600 dm ³ / (m ² s), at a pressure difference of 200 mbar between inflow side and outflow side. These values have proved to be particularly advantageous in order to create a good wearing comfort in humans when wearing textile products.

The insert could have a drying time at room temperature of at most 20 minutes, preferably at most 10 minutes, in which the mass of the insert is reduced by at least 400%. Surprisingly, the use described here with statistically random distribution of the sizes of the cells this very short drying time. The wearer of a textile product, which is equipped with the insert described here, will therefore have to give up a breathable and air-permeable textile product only a few minutes after soaking the product. The insert described here could be particularly preferably arranged in or on a shoe. The statistically randomly formed cell structure ensures that the encapsulated absorbed swellable material can expand spatially only limited. Thus, the use of air and moisture passage is sealable. The swelling of the swellable material is surprisingly mainly in the horizontal direction. The air permeability in the dry state is surprisingly much higher than the air permeability known

Water vapor permeable membrane systems. Therefore, the wearing comfort of shoes is significantly improved.

Against this background, it is conceivable that the shoe is made with a water-repellent upper material or as a membrane shoe, namely with a waterproof film or membrane permeable to water vapor. The installation of an insert described here causes a pleasant wearing climate through good ventilation of the shoe in use. Only when water enters from the outside, the insert immediately closes the air inlet opening and seals against the penetrating water. The swelling of the swellable material in the confined cells causes a reduction in the porosity of the insert to nearly zero%. In addition to the

Moisture absorption and permanent sealing by use in the presence of moisture, it is crucial that the porosity or the air permeability of the insert in the absence of moisture penetrates regenerate as quickly as possible. It is desired that the porosity reach the value as soon as possible, which shows the use in the dry state. This behavior is called dynamic porosity and, in the case of the application described here, reversibly occurs almost without changing the physical properties of the insert. As far as cells are concerned here, it does not matter if the cells are closed or open. Similar to a foam layer, the layer comprising the cells may be open-celled or closed-celled.

The insert described here could be used as a ventilation insert. Surprisingly, it has been found that the use described here in the dry state has a very high gas or vapor permeability. With swollen swellable material, the ventilation insert seals very well against liquid and / or gases.

The insert described here could also be used as a humidity regulator. By using it as a humidity regulator, a microclimate can be heavily influenced. Surprisingly, it has been found that an insert described here, which is equipped with a swellable material which contains superabsorber, can absorb water vapor particularly well and also release it again. Surprisingly, the superabsorbers used here have proven to be extremely hygroscopic.

Against this background, an application described here as

Humidity regulator can be used in a shoe. Due to its high absorption capacity, the use can produce a very good, namely dry, foot climate. It is conceivable that the insert is preferably arranged in the shoe upper, namely the upper part of the shoe. The shoe upper does not cover the sole. Specifically, the carrier layer could be configured as the upper of the shoe, wherein the cover layer is designed as an inner lining of the shoe. As a result, a compact, lightweight and low-part construction of the shoe and a cost-effective production are realized. Furthermore, the use as a humidity regulator in car interiors could be used. It is concretely conceivable that car seats are equipped with the insert. Sweat of a motorist can advantageously be led away from the back of the driver and absorbed by the use.

After all, the use described here is particularly suitable for uses in shoes, textiles and seating.

There are now various possibilities for embodying and developing the teaching of the present invention in an advantageous manner. For this purpose, on the one hand to the subordinate claims, on the other hand, to refer to the following explanation of preferred embodiments of the invention with reference to the drawings.

In conjunction with the explanation of the preferred embodiments of the invention with reference to the drawings, also generally preferred embodiments and developments of the teaching are explained.

Brief description of the drawing

In the drawing show

1 is a schematic sectional view of an insert,

Fig. 2 is a diagram showing the drying behavior of

Inserts shows

Fig. 3 is a diagram showing the air permeability of

Inserts in the wet and dry states, Fig. 4 is a diagram in which the watertightness of inserts is plotted against time, and

Fig. 5 is a diagram in which the water vapor absorption of an insert with the water vapor absorption of a nonwoven fabric

Polyester is compared.

Embodiment of the invention

Fig. 1 shows an insert for placement in or on textiles, comprising a carrier layer 1 and a cover layer 2, wherein between the Trägeriage 1 and the cover layer 2 is a liquid-swellable material 3 in particulate form in cells 4 encapsulated received. The cells 4 form a layer 5, in which the swellable material 3 is received encapsulated in such a way that the layer 5 seals with swellable swellable material 3. The seal has the effect that a gas flow or a liquid flow from the cover layer 2 to the carrier layer 1 or through the carrier layer 1 is prevented or reduced.

The Trägeriage 1 and the cover layer 2 are designed as nonwovens, wherein the cells 4 form a layer 5 and wherein the sizes of the cells 4 are statistically randomly distributed. The geometric structure of the cells 4 is random. In the cells 4 are not regularly constructed geometric body such as octahedron or cuboid, but open-cell or closed-cell spaces, which are separated by walls 6.

The Trägeriage 1 and the cover layer 2 are interconnected by the layer 5, wherein the layer is made of a binder. The walls 6 The cells 4 are made of binder and build the layer 5 on a net. The binder is designed as a thermoplastic polymer compound.

The walls 6 of the cells 4 are made of the binder and are formed so stiff that the carrier layer 1 and the cover layer 2 are held at a virtually constant distance from each other both in nicht swollen and swollen swellable material. The thickness of the insert changes only by a maximum of 5% with moisture absorption compared to the dry use.

The swellable material 3 contains superabsorbent. The cover layer 2 is made hydrophilic by a hydrophilicizing agent and permits a homogeneous horizontal distribution of the water penetrating from the outside in the direction of the arrow in the layer 5. The shorter arrow shows that the water is absorbed by the swellable material 3 after passing through the cover layer 2. By absorbing the penetrating water swells the swellable material 3 and closes the cells 4. The layer 5 seals. The larger arrow shows schematically that air in the dry state can pass through the cover layer 2, the layer 5 and the carrier layer 1.

The carrier layer 1 is made hydrophobic by a hydrophobicizing agent and prevents penetrating water or swollen, moist swellable material from coming into contact with the carrier of a textile product.

The insert just described can be constructed according to the embodiments in the following manner:

Embodiment 1 The carrier layer 1 consists of a hydroentangled nonwoven fabric made of polyester, which has a basis weight of 100 g / m ² . This nonwoven fabric is hydrophobic. The binder consists of a polyethylene powder having a mean particle size of 200-400 microns. The polyethylene powder is sold by Sabic under the name Sabic LDPE 1695 Z. The swellable material 3 consists of a superabsorbent powder having an average particle size of 80 to 160 microns. The superabsorbent powder is sold by Sumitomo Seika Chemicals Co. under the name Aqua Keep 10 SH-MB 3.

The polyethylene powder and the swellable material 3 are homogeneously mixed and applied to the carrier layer 1. Thereafter, the cover layer 2 is applied to the homogeneous mixture of swellable material 3 and binder. The cover layer 2 consists of a hydroentangled nonwoven fabric made of polyester with a basis weight of 100 g / m ² . The

Cover layer 2 is hydrophilic. By a thermal lamination of carrier layer 1 and cover layer 2, the binder is melted and the cells 4 are generated, which include the swellable material 3 encapsulated.

Embodiment 2:

The carrier layer 1 consists of a hydroentangled nonwoven fabric made of polyester, which has a basis weight of 100 g / m ² . This nonwoven fabric is hydrophobic by a hydrophobing agent. The binder consists of a polyethylene powder having a mean particle size of 200-400 microns. The polyethylene powder is sold by Sabic under the name Sabic LDPE 1695 Z. The swellable material 3 consists of a superabsorbent powder having an average particle size of 80 to 160 microns. The Superabsorbent powder is sold by Sumitomo Seika Chemicals Co. under the name Aqua Keep 10 SH-MB 3.

The polyethylene powder is applied to the carrier layer 1 in a regular pattern. The swellable material 3 is placed in interstices of the pattern that are not covered with polyethylene powder. Thereafter, the cover layer 2 is applied to the swellable material 3 and the binder. The cover layer 2 consists of a hydroentangled nonwoven fabric made of polyester with a basis weight of 100 g / m ² . The cover layer 2 is hydrophilic by a hydrophilicizing agent. By a thermal lamination of carrier layer 1 and cover layer 2, the binder is melted and the cells 4 are generated, which include the swellable material 3 encapsulated.

Embodiment 3

The carrier layer 1 consists of a hydroentangled nonwoven fabric made of polyester, which has a basis weight of 100 g / m ² . This nonwoven fabric is hydrophobic by a hydrophobing agent. The binder consists of a polyethylene powder having a mean particle size of 200-400 microns. The polyethylene powder is sold by Sabic under the name Sabic LDPE 1695 Z. The swellable material 3 consists of a liquid superabsorber. A liquid superabsorbent of the Sahara DEV 119 type from H & R ChemPharm, Great Britain, is used.

The polyethylene powder is applied to the carrier layer 1 in a regular pattern. The swellable material 3 is placed in interstices of the pattern that are not covered with polyethylene powder. Thereafter, the cover layer 2 is applied to the swellable material 3 and the binder. The cover layer 2 consists of a hydroentangled nonwoven fabric Polyester with a basis weight of 100 g / m ² . The cover layer 2 is hydrophilic by a hydrophilicizing agent. By a thermal lamination of carrier layer 1 and cover layer 2, the binder is melted and the cells 4 are generated, which include the swellable material 3 encapsulated.

Fig. 2 shows a diagram in which the mass change of two wet inserts according to Embodiment 1 is plotted against time in minutes. The mass change is given as a percentage. At a room temperature of 18 to 25 ⁰ C both inserts show a drying time of at most 20 minutes, preferably of at most 10 minutes, in which the mass of the inserts is reduced by at least 400%. In the diagram of FIG. 2, two measurements are taken, which are almost congruent. The first measurement (= 1st measurement in the diagram) was carried out on a first insert, the second measurement (= 2nd measurement in the diagram) on a second insert according to Example 1. Fig. 2 clearly illustrates the high dynamic porosity of the inserts. Furthermore, Fig. 2 shows that the inserts are reversibly durchnäss- and dry.

Fig. 3 is a graph showing the air permeability of four different inserts (Nos. 1 to 4 plotted on the x-axis) in the dry (= dry in the diagram) and in the wet (= wet in the diagram) state. All four inserts were made analogously to Example 1 and showed a thickness of 1, 1 mm. Fig. 3 shows that the tested inserts in the dry state show an air permeability of at least 200 dm ³ / (m ² s), preferably of at least 600 dm ³ / (m ² s), at a pressure difference between upstream and downstream of 200 mbar , The measurement of the air permeability was carried out according to DIN EN ISO 9237. Fig. 4 is a graph comparing the water-tightness in% of two inserts (version 1 and version 2) as a function of a reaction time in seconds. The watertightness was performed by a Pfaff seam densitometer at 0.2 bar. As water tap water with 15-20 ° German hardness was used.

Version 1 of the insert was an insert whose carrier layer 1 and cover layer 2 were each configured as hydroentangled nonwoven fabrics made of polyester, each having a basis weight of 100 g / m ² . Layer 5 comprised 160 g / m ² of the polyethylene powder referred to in Examples 1 and 2 as binder and 80 g / m ² of the swellable material 3 mentioned in the aforementioned embodiments. Version 2 of the insert was an insert, whose carrier layer 1 and cover layer 2 were each configured as hydroentangled nonwoven fabrics made of polyester, each having a basis weight of 100 g / m ² . The layer 5 comprised 80 g / m ^{2 of} the mentioned in the embodiments 1 and 2 polyethylene powder as a binder and 40 g / m ² of the aforementioned in the aforementioned embodiments swellable material 3. It can be seen from this diagram how the waterproofness in function of Amount of swellable material 3 can be adjusted. Version 1 (= version 1 in the diagram) shows a much shorter reaction time until a watertightness of 100% is achieved than version 2 (= version 2 in the diagram).

5 shows a diagram in which the water vapor uptake of an insert is compared with the water vapor absorption of a conventional polyester nonwoven fabric. The nonwoven fabric made of polyester (= polyester material in the diagram) had a weight per unit area of 150 g / m ² . The insert, which was used as a moisture regulator (= moisture regulator in the diagram), had a carrier layer 1 and a cover layer 2 with a basis weight of 70 g / m ² each. The binder, namely in the embodiments 1 and 2 said polyethylene powder, was applied with a basis weight of 30 g / m ^2. The swellable material 3 mentioned in the aforementioned embodiments was applied at a basis weight of 30 g / m ² . Surprisingly, the use at 90% relative humidity of the environment and at an ambient temperature of 23 ° C one

Water vapor mass of over 50 mg per cm ³ use on. As soon as the relative humidity is reduced to 50%, the feed releases more than 40 mg water vapor mass to the environment. In contrast to the use of polyester nonwoven takes up only a few mg of water vapor mass at the relative humidity of 90%.

With regard to further advantageous embodiments and developments of the teaching of the invention reference is made on the one hand to the general part of the description and on the other hand to the appended claims.

Finally, it should be particularly emphasized that the previously selected embodiments are merely for the purpose of discussion of the teaching of the invention, but not limit these to these embodiments.

Claims

claims

1. insert for placement in or on textiles, comprising a carrier layer (1) and a cover layer (2), wherein between the carrier layer (1) and the cover layer (2) encapsulating a swellable liquid intake material (3) in cells (4) is received, characterized in that the cells (4) form a layer (5) which connects the carrier layer (1) and the cover layer (2) to each other, wherein the cells (4) have walls (6) made of a binder which the carrier layer (1) and the cover layer (2) connect and space.

2. Use according to claim 1, characterized by a change in its thickness by a maximum of 5% in moisture absorption.

3. Use according to claim 1 or 2, characterized in that the walls (6) force the carrier layer (1) and the cover layer (2) upon swelling of the swellable material (3) to a distance from each other, the maximum of 5% of the distance deviates in the tockenen state of use.

4. Use according to one of claims 1 to 3, characterized in that the swellable material (3) is received encapsulated such that the layer (5) seals in swollen swellable material (3).

5. Use according to one of claims 1 to 4, characterized in that the cells (4) are closed and filled by the swollen swellable material (3).

6. Use according to one of claims 1 to 5, characterized in that the carrier layer (1) and / or the cover layer (2) is configured as a nonwoven, nonwoven fabric or textile, wherein the cells (4) form a layer (5) and wherein the sizes of the cells (4) are statistically randomly distributed.

7. Use according to one of claims 1 to 6, characterized in that the geometric structure of the cells (4) is random.

8. Insert according to one of claims 1 to 7, characterized in that the walls (6) of the cells (4) are designed so stiff that the carrier layer (1) and the cover layer (2) both in not swollen and swollen swellable material (3) are kept at a distance to each other, which differs at most 5% of the distance in the rocky state of the insert.

9. Use according to one of claims 1 to 8, characterized in that the walls (6) of the cells (4), the layer (5) build up like a net.

10. Use according to one of claims 1 to 9, characterized in that the binder is designed as a thermoplastic polymer compound.

11. Use according to one of claims 1 to 10, characterized in that the swellable material (3) is present in particle form and / or fiber form.

12. Use according to one of claims 1 to 11, characterized in that the swellable material (3) forms at least partially agglomerated particles with the binder.

13. Use according to one of claims 1 to 12, characterized in that the swellable material (3) contains superabsorber.

14. Use according to claim 13, characterized in that the swellable material (3) contains liquid superabsorbers.

15. Use according to one of claims 1 to 14, characterized in that the cover layer (2) is made hydrophilic by a hydrophilicizing agent.

16. Use according to one of claims 1 to 15, characterized in that the carrier layer (1) is made hydrophobic by a hydrophobing agent.

17. Use according to one of claims 1 to 16, characterized by an air permeability in the dry state of at least 200 dm ^ m ^), preferably of at least 600 dm ³ / (m ² s), at a pressure difference of 200 mbar between inflow side and outflow side ,

18. Use according to one of claims 1 to 17, characterized by a drying time at room temperature of at most 20 minutes, preferably of at most 10 minutes, in which the mass of the insert is reduced by at least 400%.

19. Use of an insert according to one of the preceding claims as a moisture regulator.

20. Use of an insert according to one of claims 1 to 18 in shoes, textiles or seating furniture.