Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
  • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
  • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
  • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/06—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings
  • A61F13/064—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings for feet
  • A61F13/067—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings for feet for the sole of the foot
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
  • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
  • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
  • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
  • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
  • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
  • B32B5/022—Non-woven fabric
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
  • B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
  • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
  • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
  • B32B5/30—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being formed of particles, e.g. chips, granules, powder
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
  • B32B7/04—Interconnection of layers
  • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
  • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
  • B32B2260/02—Composition of the impregnated, bonded or embedded layer
  • B32B2260/021—Fibrous or filamentary layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
  • B32B2260/02—Composition of the impregnated, bonded or embedded layer
  • B32B2260/025—Particulate layer
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
  • B32B2260/04—Impregnation, embedding, or binder material
  • B32B2260/046—Synthetic resin
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
  • B32B2262/02—Synthetic macromolecular fibres
  • B32B2262/0276—Polyester fibres
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
• • B—PERFORMING OPERATIONS; TRANSPORTING
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  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
  • B32B2307/546—Flexural strength; Flexion stiffness
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/70—Other properties
  • B32B2307/724—Permeability to gases, adsorption
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
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  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/70—Other properties
  • B32B2307/726—Permeability to liquids, absorption
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/70—Other properties
  • B32B2307/728—Hydrophilic
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
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  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/70—Other properties
  • B32B2307/73—Hydrophobic
• • B—PERFORMING OPERATIONS; TRANSPORTING
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  • B32B2437/00—Clothing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2479/00—Furniture
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2605/00—Vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2605/00—Vehicles
  • B32B2605/003—Interior finishings

Definitions

• 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.
• 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.
• 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.
• 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.
• functional layers produced by injection molding technology are used in which regularly shaped recesses are formed.
• metal or plastic meshes whose mesh width is limited are used to form the chamber structure as functional layers.
• 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.
• 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 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.
• 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.
• 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.
• 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.
• 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.
• the use of cost-effective production can be easily processed in textiles and has permanently moisture-independent to a nearly constant thickness.
• 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.
• 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.
• 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.
• the walls of the cells act as spacers between carrier layer and cover layer. Over an entire area of the
• 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
• 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.
• cover layer hydrophobic. As a result, once penetrated water can be included within the insert.
• 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.
• 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
• 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%.
• 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.
• 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.
• Fig. 2 is a diagram showing the drying behavior of
• Fig. 3 is a diagram showing the air permeability of
• FIG. 4 is a diagram in which the watertightness of inserts is plotted against time
• 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.
• Fig. 1 shows an insert for placement in or on textiles, comprising a carrier layer 1 and a cover layer 2, wherein between the Suiage 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 Sussion 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 Suss 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 Vietnamese 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 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 .
• 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 is a diagrammatic representation of 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 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.
• 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.
• 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.
• 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.
• Fig. 2 clearly illustrates the high dynamic porosity of the inserts. Furthermore, Fig. 2 shows that the inserts are reversibly effetnäss- and dry.
• 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 .
• FIG. 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 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 .

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• 2008
  • 2008-09-11 DE DE102008046894A patent/DE102008046894A1/de not_active Ceased
• 2009
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  • 2009-08-26 EP EP09778120A patent/EP2323841A1/de not_active Ceased
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