EP2323841A1 - Einsatz mit abstandswahrenden zellen - Google Patents
Einsatz mit abstandswahrenden zellenInfo
- Publication number
- EP2323841A1 EP2323841A1 EP09778120A EP09778120A EP2323841A1 EP 2323841 A1 EP2323841 A1 EP 2323841A1 EP 09778120 A EP09778120 A EP 09778120A EP 09778120 A EP09778120 A EP 09778120A EP 2323841 A1 EP2323841 A1 EP 2323841A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- cells
- insert
- use according
- swellable material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000000463 material Substances 0.000 claims abstract description 85
- 239000011230 binding agent Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000004753 textile Substances 0.000 claims abstract description 19
- 239000004745 nonwoven fabric Substances 0.000 claims description 21
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 11
- 230000008961 swelling Effects 0.000 claims description 11
- 230000035699 permeability Effects 0.000 claims description 10
- 230000002209 hydrophobic effect Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000004890 Hydrophobing Agent Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 132
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 239000000843 powder Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 16
- 239000004698 Polyethylene Substances 0.000 description 14
- -1 polyethylene Polymers 0.000 description 14
- 229920000573 polyethylene Polymers 0.000 description 14
- 229920000728 polyester Polymers 0.000 description 13
- 238000009826 distribution Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000002346 layers by function Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009823 thermal lamination Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000004569 hydrophobicizing agent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- 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
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- 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
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- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- 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
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- 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
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- 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
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- 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
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- 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
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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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- Animal Behavior & Ethology (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102008046894A DE102008046894A1 (de) | 2008-09-11 | 2008-09-11 | Belüftungseinsatz mit statistisch zufälliger Zellenverteilung |
PCT/EP2009/006179 WO2010028749A1 (de) | 2008-09-11 | 2009-08-26 | Einsatz mit abstandswahrenden zellen |
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EP2323841A1 true EP2323841A1 (de) | 2011-05-25 |
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EP09778120A Ceased EP2323841A1 (de) | 2008-09-11 | 2009-08-26 | Einsatz mit abstandswahrenden zellen |
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EP (1) | EP2323841A1 (de) |
BR (1) | BRPI0918169A2 (de) |
DE (1) | DE102008046894A1 (de) |
WO (1) | WO2010028749A1 (de) |
Families Citing this family (4)
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DE102009009588B4 (de) * | 2009-02-19 | 2017-04-27 | Deichmann Se | Schuh mit luftdurchlässigem Schaft |
DE102013003755A1 (de) * | 2013-03-06 | 2014-09-11 | Carl Freudenberg Kg | Belüftungseinsatz |
CN111118736A (zh) * | 2019-11-22 | 2020-05-08 | 深圳市棉芯科技有限公司 | 一种无胶针刺吸收芯体工艺和设备 |
CN114431568A (zh) * | 2020-11-04 | 2022-05-06 | 李宁(中国)体育用品有限公司 | 一种智能束紧面料及其鞋与应用 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3002136A1 (de) | 1980-01-22 | 1981-07-30 | Chemische Fabrik Stockhausen & Cie, 4150 Krefeld | Saugkoerper und verfahren zur herstellung derselben |
DE3244386C2 (de) * | 1982-12-01 | 1985-08-01 | Helsa-Werke Helmut Sandler GmbH & Co KG, 8586 Gefrees | Feuchtigkeit aufsaugender, textilartiger Stoff, insbesondere zur Herstellung von Unterbekleidung für gasdichte Schutzanzüge |
US4715918A (en) | 1985-06-26 | 1987-12-29 | Kimberly-Clark Corporation | Method for forming discrete particulate areas in a composite article |
DE8815855U1 (de) | 1988-12-21 | 1989-02-23 | Hanfspinnerei Steen & Co Gmbh, 2000 Hamburg | Hochsaugaktive Vliesstoffbahn |
US5482761A (en) | 1992-07-03 | 1996-01-09 | The Procter & Gamble Company | Layered, absorbent structure |
US20020176964A1 (en) * | 2001-05-24 | 2002-11-28 | Koslow Technologies Corp. | Rapid absorbent structures |
DE102005051575A1 (de) * | 2005-09-06 | 2007-03-15 | Dehn, Michael C. | Belüftungseinsatz |
DE102006042145B3 (de) | 2006-09-06 | 2007-10-31 | Michael Dehn | Selbstschließender Belüftungseinsatz und Verfahren zu dessen Herstellung |
-
2008
- 2008-09-11 DE DE102008046894A patent/DE102008046894A1/de not_active Ceased
-
2009
- 2009-08-26 BR BRPI0918169A patent/BRPI0918169A2/pt not_active IP Right Cessation
- 2009-08-26 WO PCT/EP2009/006179 patent/WO2010028749A1/de active Application Filing
- 2009-08-26 EP EP09778120A patent/EP2323841A1/de not_active Ceased
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BRPI0918169A2 (pt) | 2015-12-01 |
WO2010028749A1 (de) | 2010-03-18 |
DE102008046894A1 (de) | 2010-03-25 |
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