TW201829867A - Bi-elastic down-proof non-woven insert - Google Patents

Abstract

The invention relates to a bi-elastic insert comprising a melt-blown non-woven material containing melt-spun melt-blown polyurethane fibers, the non-woven material being coated on at least one face with foam that contains vinyl acetate copolymer and/or polyacrylate and/or polyurethane. The insert can be produced to have a low weight per unit area and to be yet down-proof, as well as to have the air permeability and tear resistance required for good wear and performance characteristics.

Description

 Anti-velvet double elastic non-woven interlining  

The present invention relates to a double elastic lining which can be made in a light weight and nevertheless has the same anti-velvet properties as well as the breathability and tear strength required for good wearing characteristics and use characteristics. The invention also relates to a method for preparing a lining and to the use thereof for preventing duvet from being drilled from a down filled textile product.

In the preparation of garments, the lining is usually processed with an outer fabric to achieve the shaping of each garment. The lining forms a "skeleton" of the garment. Nonwoven fabrics, woven fabrics or woven fabrics composed of mesh, mostly knitted fabrics, are generally used as the lining. In processing, the lining is stitched and/or bonded by a majority of the outer fabric that has been woven or formed of mesh.

A stable lining, a single elastic lining, and a double elastic lining are distinguished according to their deformation characteristics. A stable lining is irreversibly deformed upon elongation, while a single elastic lining is characterized by reversible deformation characteristics in one direction (longitudinal direction or transverse direction). The double elastic interlining is characterized by reversible deformation characteristics in two directions (longitudinal direction and transverse direction).

Liners are typically selected in their application to match their forming ability to the outer fabric. The double elastic outer fabric is ideally machined with a double elastic interlining. The double elasticity of the lining can be measured by means of DIN 53835-2:1981-08. If the thermoplastic properties are tested in accordance with DIN 53835-2:1981-08, the interlining can be stretched non-destructively in the longitudinal and transverse directions up to an upper reversal point of at least 25% elongation and additionally with a residual elongation of up to 10% and / or preferably at least 12% permanent elongation, then the lining is generally well matched to most of the bielastic outer fabric in terms of its forming ability.

When combined with the outer fabric, the lining should produce: small shrinkage; good care properties, ie good wash and chemical wash resistance; and a soft textile hand with good pleatability. If subjected to a thermal process, such as ironing or washing, in combination with the outer fabric, the lining should not adhere at all or should only be relatively weakly bonded, making non-destructive separation feasible. In terms of weight, the interlining is also suitably coordinated with the outer fabric: for light outer fabrics it is desirable to use very light interlinings.

Typically the lining should be invisible or only a small amount visible on the outside of the outer fabric after it has been processed. Furthermore, the lining should correspond as far as possible to the outer fabric in terms of its appearance and should not be visible on the outer fabric, for example due to its thickness or visible on the outer side of the outer fabric due to its colour, structure or gloss. of. According to the invention, as an additional function, the lining should prevent migration of the down in the textile having the down filling.

Additionally, the breathability of the lining itself and the composite structure of the lining and outer fabric should be within certain limits. Thereby, a very good thermal effect of the textile can be achieved. This property can be achieved by means of a lining which has a gas permeability of at least 20 [dm ³ /s×m ² ] to 450 [dm ³ /s×m ² ] as measured according to DIN EN ISO 9237:1995-12. In the scope. Another advantage of setting the gas permeability to the above value is that the enclosed air can leak quickly enough when compressed so that no ballooning occurs during compression. Thereby, the textile provided with the interlining according to the invention can be compressed in a satisfactory manner, for example when packed into a box or washed in a washing machine. Further, in the case where the gas permeability is at least 20 [dm ³ /s × m ² ], it is possible that the down is blown into the lining by the air without a balloon effect. A gas permeability of less than 20 [dm ³ /s × m ² ] causes the down filling to be difficult to dry after it is wet. Biological processes such as bacterial growth, fungal formation or mold formation can occur. In addition, air exchange is no longer sufficiently ensured, so that sweat accumulates between the skin and the textile, which reduces wearing comfort and causes the wearer to catch a cold.

A value higher than 450 [dm ³ /s × m ² ] in the gas permeability is also disadvantageous. If the air and wind also penetrate the composite structure of the lining and the outer fabric too strongly, then no sufficient heat is provided. In the case of a high gas permeability value, the tightness is usually not sufficient to ensure sufficient anti-velvet or anti-down migration.

Down (also known as Unterfedern) is a feather with short plumes and soft feather branches. In textile products such as jackets, bedding or sleeping bags, down is used as a filler for thermal insulation. Here, the down comprises and encloses in a jacket made of a planar textile structure. In the proposed application, the down-filled textile product must be "anti-velvet". This means that the down does not penetrate or extend (migrate) the wrap. Because the feathered plume is sharp and hard, the sheath must have high tear strength. Within the scope of the invention, the term "down" is used to mean the fluff of a bird, which is suitable for textile filling. The definition of down is provided in DIN 12934. Down is especially feathers with very short plumes and long, radial feathers. Downs usually have fewer hooks than other feathers. Due to its high elasticity and dimensional stability combined with thermal insulation properties, down is used in a wide range of textile applications.

In textiles having a full or partial down filling, there is a tendency to penetrate down the outer fabric, especially due to surface friction, such as manual stress during wearing, washing or chemical cleaning of the garment. . These particles can damage the outer fabric as it is drilled and are undesirable because they are visible there. A large amount of migration deteriorates the thermal effects of the clothes because the quality of the filling is reduced.

At present, in order to prevent the migration of down, an anti-velvet fabric is used as a lining cloth. According to the standard test method GB/T 12705.2-2009 "Textile-Methods of testing the down-proof properties of fabrics-Part 2 Tumble test", for example, the tightness of the fabric relative to the down can be determined, wherein the particles penetrated here are below 15 The quantity is considered to be good or acceptable.

Flock-resistant fabric linings are typically achieved with high feather density and fineness due to the use of very fine yarns. However, the fabric lining provides low elasticity and breathability. The fabric lining cannot be processed in a satisfactory manner with an elastic outer fabric because its forming ability does not match well with the bielastic outer fabric. Furthermore, when processed with a very light, transparent outer fabric, this anti-velvet fabric lining can be visible on the outside of the garment due to the Moirée effect, which is due to the textile structure of the interlining and the textile of the outer fabric. A superposition of structures or mesh structures is produced.

For very light, transparent outer fabrics, it is often necessary to use very light linings with a small grammage and thickness. This is problematic in textile linings and knit linings because the linings can only be produced at high cost in the case of low production speed, high cost and quality problems. That is to say, very fine yarns/filaments must be used. However, the yarns/filaments are difficult to process and generally have such high fineness and sliding ability that the yarns/filaments are barely flat and wrinkle-free when processed with the outer fabric and are almost impossible to straighten and The shape is accurately cut. Such linings tend to form pleats or slip, which results in difficult handling and poor processability.

In addition, textiles based on bi-elastic and suitable for use as a lining for down-migration are currently not available on the market.

The interlining composed of the non-woven fabric can also be cut nicely and with a small wrinkle and can be laid without wrinkles, and can be processed without known problems due to its structure. Very light non-woven fabrics are usually made of spunbond or staple fibers having a fineness of less than 1 dtex. Such non-woven fabrics have a soft hand and can be prepared in particular with a small grammage of good tear strength.

It is proposed in the prior art that a nonwoven fabric for storing down is used as a component of the laminate. Thus, for example, JP 2008/303480 A proposes to use a composite material composed of a fabric and a non-woven fabric. JP 2006/291421 A also discloses an anti-textile laminate comprising a thermally bonded nonwoven fabric. However, laminates are usually produced relatively inexpensively, also because the components must be bonded or must be securely joined to one another in other ways.

Nonwoven fabrics having bielastic deformation characteristics are usually only produced at a costly rate. Moreover, the nonwoven fabric is generally only anti-velvet in the case where the structure is tight and the weight is high at the same time.

It is an object of the present invention to provide a bi-elastic lining which can be prepared in a simple manner and which is well matched to most bi-elastic outer fabrics in terms of its forming ability and even in the case of small gram weights Has good or at least acceptable anti-textile properties.

The lining should be able to have the breathability required for good wearing characteristics and use characteristics, a soft hand and good thermal action when combined with the outer fabric.

Finally, the lining should have a sliding ability that is well matched for processing.

The lining should also be prepared in small thicknesses when needed and have the tear strength necessary for good processing.

The object is achieved by a bielastic lining comprising a meltblown nonwoven fabric comprising melt spun meltblown polyurethane fibers, wherein the nonwoven fabric has a foam coating on at least one side, the foam The coating comprises a vinyl acetate copolymer and/or a polyacrylate and/or a polyurethane.

It has been found in accordance with the invention that the interlining according to the invention has a high bielasticity due to the combination of elastic polyurethane fibers with a foam coating composed of the same highly elastic polymer.

Thus, the lining is well matched to most of the bi-elastic outer fabric in terms of its forming ability. Moreover, the lining has good or at least acceptable shedding resistance even in the case of small grammage. This is presumably attributed to the fact that the foam coating very effectively seals the passage of the down in the nonwoven fabric and increases the penetration resistance and tear strength.

Due to the inherently high gas permeability of the foam structure, the interlining can also have the breathability required for good wearing characteristics and use characteristics. Finally, the use of polyurethane in combination with the polymer used for the foam coating achieves a soft hand and good thermal action when combined with the outer fabric.

Furthermore, it has surprisingly been found that the lining according to the invention has a small shrinkage during washing and drying. This has been unpredictable in the past because, on the one hand, non-woven fabrics based on polyurethane fibers generally have high shrinkage, and on the other hand, fibers comprising polymers each having a low softening temperature and/or glass transition temperature are used. In contrast to foam coatings, more specifically, increased shrinkage characteristics are expected. It is assumed that the small shrinkage tendency is attributed to the stability of the foam coating by the fact that the foam coating stabilizes the fibers at least on the surface by bonding. Such adhesion can be carried out particularly strongly when the foam coating comprises a vinyl acetate copolymer and/or a polyacrylate and/or a polyurethane in an at least partially crosslinked form.

Accordingly, the shrinkage of the interlining according to the invention is preferably less than 5%, more preferably less than 3%, still more preferably less than 2%.

Furthermore, it has surprisingly been found that the lining according to the invention has a soft hand even when coated over the entire surface, that is to say that more than 95% of the surface area is covered by the foam coating.

Furthermore, it has surprisingly been found that as long as the lining is prepared as a quilted lining and is prepared as a lining without the use of hot melt adhesives which are conventionally used, the use, respectively, has a low softening temperature and/or glass transition temperature. Fiber and foam coating of the polymer, but during the thermal process such as ironing at up to 110 ° C or washing at 40 ° C, the lining according to the invention does not stick or only weakly bond, so that the lining can be Separate again without damage.

Furthermore, it has surprisingly been found in accordance with the invention that the lining according to the invention is plastically compatible with the outer fabric and can be constructed with the outer fabric when thermally bonded to the structured outer fabric. Here, the structure of the outer fabric is transferred to and presented on the lining. Thereby, the lining has a protruding forming ability.

According to the invention, polyurethane fibers are understood to be fibers which comprise a preferred proportion of more than 90% by weight, more preferably more than 95%, of polyurethane. In particular, the polyurethane fibers are composed of polyurethane, which can contain conventional additives. Particularly suitable polyurethanes are based on polyester chemistry, polyether chemistry and/or polycaprolactone chemistry which are polyurethanes having an aromatic chain and/or a fatty chain. Aliphatic polyurethanes are advantageous due to their high resistance to yellowing. The polyurethane fibers preferably have a softening range above 120 °C, preferably from 160 °C to 175 °C.

Meltblown nonwoven fabrics, hereinafter also referred to as nonwoven fabrics, can be prepared by known methods by meltblowing.

In the meltblowing process, the nonwoven fabric is formed from the fibers by direct laying, which is directly spun from the polymer melt passing through the nozzle and stretched by means of a stream of hot air until breaking. A so-called meltblown nonwoven fabric is produced. A bonded nonwoven fabric based on its configuration is called a melt blown nonwoven fabric. Meltblown fibers typically have very small deniers. According to the invention, the denier is preferably less than 1 dtex, for example between 0.1 dtex and 1 dtex.

Correspondingly, the fibers have an average fiber diameter of preferably less than 1 [mu]m (micrometer), in particular less than 0.5 [mu]m, for example between 0.1 [mu]m and 1 [mu]m. The object of the invention is to determine the average fiber diameter by optical measurement methods, in particular by image analysis of images (REM images) produced by means of scanning electron microscopy. This includes statistically valid analytical methods for giving reproducible, objective, and thus representative conclusions about fiber diameter and its spread at multiple measurement points.

According to the invention, the nonwoven fabric is a nonwoven fabric comprising meltblown polyurethane fibers. Here, the proportion of the polyurethane fibers in the melt-blown nonwoven fabric is preferably more than 90% by weight, more preferably more than 95% by weight. The meltblown nonwoven fabric is composed in particular of polyurethane fibers.

With regard to the non-woven fabric being constituted as a melt-blown nonwoven fabric, it is advantageous to constitute a very uniform and compact structure, whereby the predetermined elasticity is also uniformly formed throughout the layer. In addition, the compact structure causes high anti-velvet properties and tear strength.

Due to the conventional fiber structure, the gas permeability can be set to a desired value despite this. The lining preferably has a tear strength measured as a maximum tensile force of 15N to 60N in the longitudinal direction and 10N to 60N in the transverse direction and/or a maximum tensile strength of 100% to 400%. Here, the tear strength relates to a nonwoven fabric which does not have a foam coating of a carrier material for preparing a nonwoven fabric, if necessary.

The mechanical properties of the nonwoven fabric can be further improved by the subsequent bonding, especially thermal bonding.

In a preferred embodiment of the invention, a meltblown nonwoven web is prepared as a functional layer on a carrier material. In a conventional sense, this embodiment is not considered a laminate because the embodiment achieves a simple separability of the meltblown nonwoven web and the carrier material. Subsequently, the foam coating can be applied in a particularly simple manner to the nonwoven fabric which is stabilized by the carrier material.

The carrier material preferably has a lower elasticity in at least one direction than the meltblown nonwoven fabric in order to achieve a simple operation even in the process of processing the material by means of tensile stress, for example when applying a foam coating. After the application of the foam coating, for example, the carrier material can be separated in a simple manner immediately before the combination with the outer fabric. The carrier material can be a nonwoven fabric, a woven fabric, a woven fabric, a knitted fabric or the like, preferably a spunbonded nonwoven fabric based on, for example, polyester, polyamide or polypropylene.

In the absence of a carrier material which is present if desired, the proportion of melt-spun polyurethane fibers to the total weight of the lining is preferably between 30% and 90% by weight, more preferably between 40% and 80% by weight, More particularly preferably between 50% and 70% by weight.

The inherently high double elasticity allows the lining according to the invention to achieve high wearing comfort and high flexibility in the selection of the outer fabric. In particular, the lining can also be produced in a very small gramm weight and nevertheless has good anti-velvet properties, tear strength and a sufficiently small sliding capacity, so that the lining can be processed well.

In the case of a carrier material which is present if not required, the interlining preferably has a basis weight of from 30 g/m ² to 90 g/m ² , preferably from 40 g/m ² to 80 g/m ² , in particular from 50 g/m ² to 70 g/m ² The weight of the weight.

The lining according to the invention achieves outstanding velvet resistance. Preferably, when the lining is tested according to the standard test method GB/T 12705.2-2009 "Textile-Methods of testing the down-proof properties of fabrics-Part 2 Tumble test", the number of penetrating particles does not exceed a maximum of 15, more preferably Do not exceed a maximum of 10 and especially a maximum of 5.

The gas permeability of the interwoven fabric according to the invention measured according to DIN EN ISO 9237:1995-12 is preferably from 10 [dm ³ /s × m ² ] to 450 [dm ³ /s × m ² ], more preferably at 50 [dm ³ /s × m ² ] to 350 [dm ³ /s × m ² ], especially in the range of 100 [dm ³ /s × m ² ] to 300 [dm ³ /s × m ² ]. Thereby, the interlining can be well compressed, ensuring rapid drying of the down filling when the down filling is wet and high wearing comfort due to the sweat being able to be carried away, but at the same time providing thermal action.

Due to the use of polyurethane as the fibrous material, the interlining according to the invention can be well colored and exhibits a small yellowing tendency in terms of heat influence, aging and/or light influence. The combined use of meltblown fibers and foam coatings has achieved good cohesion of the interlining, enabling the thermal fusion of the fibers to be discarded, for example by means of thermal fusion of structured calender rolls. Thus, it is possible to produce a lining according to the invention having a very uniform surface, which surface in particular does not have shiny solder joints. The combination of polyurethane fibers and foam coatings also achieves good heat resistance.

In one embodiment of the invention, the foam coating has a hot melt adhesive distributed therein. Alternatively, the hot melt adhesive can also be present on the foam coating, for example as a dispersed powder layer and/or an adherent material. Hot melt adhesives have long been known. Preferred hot melt adhesives are thermoplastic polymers such as copolyamines, copolyesters, polyethylene (PE), polypropylene (PP) and/or mixtures and/or copolymers thereof.

The melting point of the hot melt adhesive is preferably from 70 ° C to 190 ° C, more preferably from 80 ° C to 150 ° C, still more preferably from 90 ° C to 130 ° C.

According to the invention, the hot melt adhesive is particularly preferably a copolymerized decylamine or a copolyester. With these hot melt adhesives, the interlining can be bonded to the outer fabric with good separation force. However, the interlining according to the invention can also be joined to the outer fabric by stitching. An advantage of this embodiment is that unlike the linings that are joined by hot melt adhesive, the feel of the composite structure does not become stiff.

It has been found that a dedicated foam coating according to the invention enables the sliding ability of the lining to be adjusted in a targeted manner as follows: an ideal value for the stitchability can be achieved. For this purpose, the sliding ability should also not be too low in order to ensure that the lining passes through the presser foot of the sewing machine and slides over the sewing needle.

A further advantage of the lining according to the invention is that the lining can be made with a flat, uniform surface of uniform thickness and thus also with a very light, transparent outer layer of fabric having a uniform appearance.

The proportion of the foam coating in the lining can be related to the desired properties of the lining, for example with respect to the respectively desired elastic change. Practical studies have shown that, in the absence of a carrier material which is present if desired, it is particularly preferred if the foam coating comprises a weight fraction of the interlining in the range from 20% by weight to 80% by weight, based on the total weight of the lining, respectively. In the range from 70% by weight to 40% by weight, it is then possible to obtain a lining having a particularly good combination of softness and bi-elasticity.

The layer thickness of the foam coating can be set according to the desired properties of the fabric. For most application purposes, it has proven to be advantageous for the foam coating to have an average layer thickness in the range from 5 μm to 400 μm, preferably from 5 μm to 100 μm and in particular from 10 μm to 50 μm. The layer thickness can be determined by electron microscopy.

The lining according to the invention also has a soft textile hand and good pleating ability in the case of a relatively high amount of foam coating. In principle, the proportion of the foam coating can also be set to a value higher than 80% by weight. However, in this case, it is necessary to accept a loss in tear strength, textile characteristics, and softness of the nonwoven fabric. The proportion of the foam coating can also be set below 20% by weight. However, in this case, the lining resistance, the double elasticity, and the ability to bond the hot melt adhesive are lowered.

The higher the share of the foam coating, the lower the air permeability of the nonwoven fabric, which improves the thermal insulation properties of the lining. The entropy effect produced by the heat as the foam coating elongates additionally contributes to the thermal action.

Other functional properties, such as hydrophilic, water-repellent or oil-repellent, heat-regulating or flame-retardant properties, can be set in a simple manner by using additives known from the prior art to produce these effects, if desired. . The thermal conditioning properties can, for example, be provided by means of microencapsulated phase change materials, for example alkane-based phase change materials.

Vinyl acetate copolymers and/or polyacrylates and/or polyurethanes can be used for the foam coating.

The foam coating can be foamed in a conventional manner by polymer dispersion or polymer emulsion, for example by mechanical impact and by conventional coating methods such as knife coating.

The advantage of using a vinyl acetate copolymer is that during the thermal process, such as ironing at even up to 140 ° C or washing up to 60 ° C, the resulting foam coating does not stick or only weakly bond, making The lining can be separated again without damage. Additionally, vinyl acetate copolymers are prepared simply and at low cost. The linings made therefrom also have a particularly small yellowing tendency and exhibit a very low color-pick-up, that is to say, being contaminated with a small amount of coloring agent which leaves the other textiles during washing. In addition, the interlining shows a particularly slight shrinkage.

A preferred vinyl acetate copolymer is a vinyl acetate-ethylene copolymer. These copolymers can be prepared, for example, by emulsion polymerization. Thus, according to the invention, the vinyl acetate copolymer is preferably based on aqueous vinyl acetate-emulsion and/or vinyl acetate-dispersion, in particular based on vinyl acetate comprising from 65% to 98% by weight of vinyl acetate. - Ethylene-emulsion and/or vinyl acetate-ethylene-dispersion. The vinyl acetate-ethylene-emulsion and/or vinyl acetate-ethylene-dispersion preferably comprises from 65% to 98% by weight of vinyl acetate and 2% by weight, based on the total weight of the monomers, respectively, in an aqueous medium. Up to 30% by weight of ethylene, preferably from 75% to 95% by weight of vinyl acetate and from 5% to 25% by weight of ethylene.

The vinyl acetate-emulsion and/or vinyl acetate dispersion can also comprise up to 10% by weight, preferably from 0.1% to 10% by weight, based on the total weight of the monomers, of further comonomers.

Further suitable comonomers for the vinyl acetate-emulsion and/or vinyl acetate-dispersion are, for example, selected from the group consisting of vinyl esters having from 3 to 12 carbon atoms in the carboxyl residue, such as propionic acid Vinyl ester; vinyl laurate; vinyl ester of an alpha-branched carboxylic acid having from 8 to 11 carbon atoms. a methacrylate or acrylate of an unbranched or branched alcohol having from 1 to 15 carbon atoms, such as methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, Propyl methacrylate, n-butyl acrylate, n-butyl methacrylate, 2-ethylhexyl acrylate, and norbornyl acrylate are also suitable. Vinyl halides such as vinyl chloride are also suitable.

Other suitable comonomers are also ethylenically unsaturated monocarboxylic acids and dicarboxylic acids, preferably acrylic acid, methacrylic acid, fumaric acid and maleic acid; ethylenically unsaturated carboxylic acid decylamines and carboxylic acid nitriles, preferably acrylonitrile Amines and acrylonitrile; monoesters and diesters of fumaric acid and maleic acid, such as diethyl ester and diisopropyl ester, and maleic anhydride; ethylenically unsaturated sulfonic acids or salts thereof, preferably vinyl sulfonate Acid, 2-acrylamido-2-methylpropanesulfonic acid. Further examples are pre-crosslinked comonomers, such as olefinic polyunsaturated comonomers, such as divinyl adipate, diallyl maleate, allyl methacrylate or triallyl cyanurate Ester, or post-crosslinking comonomer, such as acrylonitrile aminoglycolic acid (AGA), methyl methacrylate methyl glycolate (MAGME), N-methylol acrylamide (NMA), N-methylol Methyl acrylamide (NMMA), N-methylol allyl carbamate, alkyl ether, such as N-methylol acrylamide, N-methylol methacrylamide and N - Isobutoxy ether or ester of hydroxymethylallyl carbamate. Monomers having a hydroxyl or carboxyl group are also suitable, such as hydroxyalkyl methacrylate and hydroxyalkyl acrylates such as hydroxyethyl acrylate, hydroxypropyl acrylate or hydroxybutyl acrylate or hydroxy methacrylate; , 3-dicarbonyl compound, such as acetamethylene ethoxyethyl ester, acetamethylene ethoxy methacrylate, acetamethylene ethoxyethyl ester, ethyl acetate ethyl acetate, 2,3-di ( Ethylene ethoxylated) propylmethyl-polyacrylate and allyl acetate.

Here, the monomer selection is preferably carried out such that the vinyl acetate copolymer, especially the vinyl acetate-ethylene copolymer, has a temperature of from -20 ° C to +20 ° C, preferably from -20 ° C to +0 ° C, more preferably -20 Glass transition temperature Tg from °C to -10 °C.

The glass transition temperature Tg of the polymer can be determined in a known manner by means of DSC (Dynamische Differenz-Thermoanalyse, DIN EN ISO 11357-1/2). Tg can also be approximated by the Fox equation. The Tg values of homopolymers are listed in the second edition of the Polymer Handbook, J. Wiley & Sons, New York (1975).

More particularly preferably, a vinyl acetate copolymer of the brand name Vinamul® Elite 25 of the company Celanese Emulsions is used.

A preferred polyacrylate is polybutyl acrylate, also referred to hereinafter as butyl acrylate. Butyl acrylate can also be prepared by emulsion polymerization. The polyacrylates are therefore preferably prepared on the basis of polyacrylate-emulsions and/or polyacrylate-dispersions, in particular butyl acrylate-emulsion and/or butyl acrylate-dispersions, which preferably comprise at least 40 % by weight, preferably at least 50% by weight, particularly preferably at least 60% by weight, of n-butyl acrylate or n-butyl methacrylate (abbreviated as n-butyl (meth) acrylate); preferably n-butyl acrylate.

In addition to the abovementioned butyl acrylates, the polyacrylate-emulsion and/or polyacrylate-dispersion can comprise further comonomers, preferably selected from alkyl (meth) acrylates of from 1 to 20 carbon atoms. a vinyl ester of a carboxylic acid containing up to 20 carbon atoms, a vinyl arene having up to 20 carbon atoms, an ethylenically unsaturated nitrile, a vinyl halide, a vinyl group containing an alcohol of 1 to 10 carbon atoms An ether, an aliphatic hydrocarbon having 2 to 8 carbon atoms and one or two double bonds or a mixture of these monomers. For example, (meth) acrylates having a C1-C10 alkyl group such as methyl methacrylate, methyl acrylate, ethyl acrylate and 2-ethylhexyl acrylate are listed.

Particularly preferred comonomers are postcrosslinking comonomers such as propylene guanidine aminoglycolic acid (AGA), methyl methacrylate methyl glycolate (MAGME), N-methylol acrylamide (NMA), N - hydroxymethylmethacrylamide (NMMA), N-methylolallyl carbamate, alkyl ether, such as N-methylol acrylamide, N-methylol methacrylate Isobutoxy ether or ester of amine and N-methylolallyl carbamate.

Here, the monomer selection is preferably carried out such that the polyacrylate, especially butyl acrylate, has <-25 ° C, for example -50 ° C to -25 ° C, preferably -45 ° C to -25 ° C, more preferably -40 Glass transition temperature Tg from °C to -25 °C.

It is more particularly preferred to use a polyacrylate ester of the type of Appretan® N 92100 from Archroma.

The advantage of using polyacrylates is that the polyacrylates are inexpensive and nevertheless achieve good anti-velvet properties.

In addition, various polyurethanes can be used for the foam coating. According to the invention, aliphatic polyurethanes are preferred because the aliphatic polyurethanes have a slight yellowing tendency. Particularly preferred is a polyester polyurethane. Also especially preferred are polyurethanes prepared from aqueous polymer dispersions. According to the invention, it is especially preferred to carry out the preparation of the polyurethane by the following: I) a) at least one polybasic aliphatic isocyanate or aromatic isocyanate, b) a diol, wherein b1) is based on the total amount of the diol (b) 10% to 100% by mole, having a molecular weight of 500 to 5,000, and b2) 0% to 90% by mole based on the total amount of the diol (b), having a molecular weight of 60 to 500 g/mol, c a monomer different from the monomers (a), (b) having at least one isocyanate group or at least one reactive group relative to an isocyanate group, the reactive group also carrying at least one hydrophilic group A group or a latent hydrophilic group, thereby causing dispersibility in the water of the polyurethane, conversion to polyurethane in the presence of a solvent, and II. followed by dispersing the polyurethane in water.

Especially preferred are aliphatic isocyanates in which all isocyanate groups are bonded to the fatty chain.

Preferred aliphatic isocyanates according to the invention comprise from 4 to 12 carbon atoms. Preferred aliphatic isocyanates are tetramethylene diisocyanate, hexamethylene diisocyanate (hexane, 1,6-diisocyanate), octamethylene diisocyanate, decamethylene diisocyanate, twelve methylene Particularly preferred is bis-isocyanate, tetradecyl diisocyanate, ester of lysine diisocyanate, tetramethyl dimethyl diisocyanate, trimethyl hexane diisocyanate or tetramethyl hexane diisocyanate. 1,6-hexamethylene diisocyanate.

Preferred aromatic isocyanates according to the invention are: isophorone diisocyanate, toluene diisocyanate, dicyclohexylmethane diisocyanate, phenylene diisocyanate, 2,4-toluene diisocyanate and 2,6-toluene diisocyanate, Phenyl isocyanate, diphenylmethane series isocyanate, 1,5-naphthalene diisocyanate, p-chlorophenyl isocyanate, carbodiimidated triisopropylphenylene diisocyanate.

The high molecular weight diol (b1) is first considered as the diol (b) having from about 500 g/mol to 5000 g/mol, preferably from about 700 g/mol to 3000 g/mol, particularly preferably from 800 g/mol to 2500 g/ The number average molecular weight (Mn) of mol.

According to the invention, the diol (b1) is a polyester polyol. In addition to the diol (b1), a low molecular weight diol (b2) having a molecular weight of from about 50 g/mol to 500 g/mol, preferably from 60 g/mol to 200 g/mol, is used as the diol (b) .

The constituent component of the short-chain alkyl diol mentioned for the preparation of the polyester polyol is mainly used as the monomer (b2), such as ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,1- Dimethylethane-1,2-diol, 2-butyl-2-ethyl-1,3-propanediol, 2-ethyl-1,3-propanediol, 2-methyl-1,3-propanediol , neopentyl glycol, neopentyl glycol hydroxypivalate, 1,2-butanediol, 1,3-butanediol or 1,4-butanediol, 1,6-hexanediol, 1, 10-decanediol, isopropylidene bis(4-hydroxycyclohexane), tetramethylcyclobutanediol, 1,2-cyclohexanediol, 1,3-cyclohexanediol or 1,4- Cyclohexanediol, cyclooctanediol, norbornanediol, decanediol, decalindiol, 2-ethyl-1,3-hexanediol, 2,4-diethyloctane-1 , 3-diol, hydroquinone, bisphenol A, bisphenol F, bisphenol B, bisphenol S, 2,2-bis(4-hydroxycyclohexyl)propane, 1,1-cyclohexanedimethanol, 1 , 2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol, 1,2-cyclohexanediol, 1,3-cyclohexanediol or 1,4 a cyclohexanediol, preferably an unbranched diol having 2 to 12 carbon atoms and an even number of carbon atoms, and pentanediol-1,5 and pentane Alcohol.

In order to achieve dispersibility in water of the polyurethane, in addition to the components (a) and (b), the polyurethane preferably consists of a monomer (c) different from the components (a) and (b), the monomer (c) A group carrying at least one isocyanate group or at least one reactive group relative to the isocyanate group and which additionally carries at least one hydrophilic group or which can be converted into a hydrophilic group. Hereinafter, the term "hydrophilic group or potentially hydrophilic group" is abbreviated as "(potentially) hydrophilic group". The (potential) hydrophilic group reacts significantly more slowly with the isocyanate than the monomeric functional group used to form the polymer backbone. The (potential) hydrophilic group can be a nonionic hydrophilic group or preferably an ionic hydrophilic group, ie a cationic hydrophilic group or an anionic hydrophilic group, or a latent hydrophilic group and is particularly preferred It is an anionic hydrophilic group or a latent anionic hydrophilic group.

For example, a mixed or pure polyethylene glycol ether composed of an ethylene oxide repeating unit of preferably 5 to 100, preferably 10 to 80, is considered as a nonionic hydrophilic group. Polyglycol ethers can also contain propylene oxide units. If this is the case, the content of the propylene oxide unit should not exceed 50% by weight, preferably not more than 30% by weight, based on the mixed polyethylene glycol ether.

Here, the monomer selection is preferably carried out such that the polyurethane, especially the aliphatic polyurethane, has a glass transition of from 0 ° C to -65 ° C, preferably from -60 ° C to -20 ° C, more preferably from -55 ° C to -30 ° C. Temperature Tg.

More particularly preferably, polyurethanes of the trademark PUS by CHT R. BEITLICH GmbH are used.

An advantage of using a foam coating is that the foam coating is breathable and moisture permeable, which has a positive effect on wearing comfort. The porous structure of the foam coating also achieves a uniform air loop and uniform gas permeability.

Moreover, the application of the foam coating generally provides different advantages over conventional coatings typically applied by rotary screen printing methods or by means of knife coating methods.

Therefore, the foam coating is significantly more cost effective than pure paste printing because the share of the raw materials in the same coating is significantly less.

Another advantage is that the permeation through the lining occurs to a small extent. The pure binder printing mixture (Binderdruckmischung) is significantly more penetrating into the lining/infiltrating through the lining.

According to a preferred embodiment of the invention, the foam coating has a porous structure in which more than 50% of the pores have a diameter measured according to DIN ASTM E 1294, said diameter being between 1 μm and 100 μm, preferably between 5 μm and 30 μm In the scope.

The foam coated polymer can be present in a chemically crosslinked or non-crosslinked manner. According to the invention, the polymer is preferably present at least partially in a crosslinked manner. Thus, the foam coating can have at least one crosslinking agent. By using a crosslinking agent to adjust the polymer of the foam coating, the viscoelastic properties of the foam coating can be adjusted in a targeted manner and the peeling performance can be set. In addition, the handle and the washability can be changed in a targeted manner by the crosslinking agent. Therefore, by using a crosslinking agent, the performance of the separation force of the foam containing the hot melt adhesive can be improved mainly after washing or chemical cleaning.

It has proven to be advantageous according to the invention for the foam coating to comprise a foaming agent, in particular a surfactant.

It has also proven to be advantageous for the foam coating to comprise a thickener, in particular a cellulose ether, a polyacrylate, a polyacrylamide, a polyether or a polyurethane-thickener.

Furthermore, it has proven to be advantageous for the foam coating to comprise a hand-feeling agent, in particular an anthracene resin.

A further subject of the invention is a process for the preparation of a lining according to the invention, which comprises the steps of preparing and/or providing a meltblown nonwoven fabric comprising melt-spun meltblown polyurethane fibers and comprising acetic acid A foam coating of a vinyl ester copolymer and/or a polyacrylate and/or polyurethane is applied to the nonwoven fabric.

Application of the foam coating to the nonwoven fabric can be performed according to various coating techniques known to those skilled in the art. The foam coating is preferably applied to the nonwoven fabric in the form of a foamed water-based polymer dispersion or a polymer emulsion. If desired, the foam coating can contain other addenda such as the above additives.

Due to the foam structure, it is possible to avoid the formation of a completely closed film from the polymer dispersion after drying. According to the method, the formation of the film can be carried out as a span of the span between the fibers, or as a planar film having pores.

According to the invention, the coating of the foam coating is preferably carried out by means of smearing, printing, for example by rotary screen printing by means of a printing stencil, or by means of impregnation.

After the application of the foam coating, the foam coating preferably, preferably, is hardened by heat treatment at a temperature below the melting range or decomposition temperature of the fiber. The hardening is preferably carried out for 15 s to 120 s when the temperature is in the range of 60 ° C to 200 ° C. The lining according to the present invention can be provided with a hot melt adhesive for bonding to the outer layer fabric. This takes place, for example, by the fact that the hot melt adhesive is preferably applied in the form of a powder having a polymer dispersion, so that a lining of the hot melt adhesive layer can be obtained without additional coating steps, or the hot melt adhesive can be dispersed as a powder. On the foam coating. The hot melt adhesive can also be applied to the lining as a point of attachment.

However, the lining according to the invention is preferably stitched. For this purpose, the foam coating preferably does not have a coating with a hot melt adhesive. The outer layer fabric from which the interlining is processed preferably has a weight of from 50 g/qm to 400 g/qm, more preferably less than 300 g/qm, still more preferably less than 200 g/qm.

The subject of the invention is also a down-filled textile product, in particular selected from the group consisting of a jacket, a bedding, a cushion, a mattress or a sleeping bag, said textile product comprising a textile wrap and a downhole contained therein. The wrap includes the above-described interlining for preventing down feathers from being drilled.

The wrap is a textile layer having a suitable shape to preserve the downhole located therein. The textile wrap can consist essentially of a lining, preferably in combination with an outer fabric. This means that the interlining forms at least part of the textile wrap in combination with the outer fabric, by which the preservation of the down and separation from the environment is achieved. In addition, the textile wrap can be modified for other purposes, such as with decorative elements or closure mechanisms such as buttons or zippers.

The textile product is preferably a bedding, a jacket, a cushion, a mattress or a sleeping bag. The textile product is especially preferably a jacket. Due to the combination of good mechanical properties and especially high softness and elastic fleece, the combination of interlining and outer fabric is also suitable as a body pad or body pad, such as a bed cover, pillow or mattress.

Another subject of the invention is the use of a lining for preventing duvets from being drilled from down-filled textile products, especially as an anti-velvet lining in garments and household textiles such as down jackets, bedding, and sleeping bags. In addition to down, the filler can also contain other common filler materials such as feathers or synthetic filler materials. For textile applications, down is often used as a mixture of feathers. The proportion of the down filling to the filler is preferably at least 30% by weight or at least 50% by weight, in particular at least 70% by weight.

In a preferred embodiment, the lining is in direct contact with the down filling. This means that there are no other layers between the lining and the down.

Here, it is preferred that the side of the lining with the foam coating directly adjoins the down to form a barrier.

The invention is explained in detail below on the basis of a plurality of examples.

A meltblown nonwoven fabric comprising melt spun meltblown polyurethane fibers of the following type is used in the examples: a polyether-based thermoplastic aliphatic polyurethane having a Shore A hardness of 86 and a melting range of 160 ° C to 175 ° C, The thermoplastic aliphatic polyurethane is spun on a standard meltblowing apparatus at a water content of <0.1%.

Example 1: Preparation of a sewable interlining according to the present invention by means of a doctor blade method

413 g of aqueous vinyl acetate-polymer dispersion based on acrylamide, ethylene and N-methylol acrylamide (55% solids) and 318 g of ammonium stearate-based foaming agent (30% solids) And 103 g of an emulsion based on polyhydrogen methyloxane (44% solids content) and with 12 g of water were mixed under stirring. The solids content given is a weight fraction which can be determined by weighing the liquid component after evaporation of the liquid component.

The mixture was thickened with 154 g of a stock solution consisting of methyl hydroxyethyl cellulose under stirring. To prepare the stock solution, 29.1 g of methyl hydroxyethyl cellulose (solid content 100%) was stirred into 970.9 g of water and allowed to swell for 48 h at room temperature. The viscosity of the stock solution is from 50,000 cp to 75,000 cp.

After the stock solution was added, the mixture was stirred. Next, the mixture was foamed into a 2 liter foam using a foam mixer.

The foam was applied to a nonwoven fabric composed of fibers melt-spun by a polyurethane having a basis weight of 40 g/m ² with a 200 μm doctor blade and dried at 130 ° C to 150 ° C for 15 s to 90 s in a convection oven. A foam coating having a basis weight of 25 g/qm was produced. As the carrier material for the nonwoven fabric, a spunbonded nonwoven fabric composed of polypropylene having a basis weight of 20 g/qm was used. Other carriers from which the nonwoven fabric can be detached without damage are also suitable.

The lining has a sliding ability that is outstandingly suitable for its stitching. The interlining also has a soft hand and can be processed as a stitching interlining in a variety of elastic and non-elastic outer layers. The lining has a good thermal effect when combined with the outer fabric.

Example 2: Preparation of a sewable interlining according to the present invention by means of a knife coating method

361 g of a polyurethane-based aqueous polyurethane-polymer dispersion (solids content 49%) with 278 g of ammonium stearate-based foaming agent (solids content 30%) and 90 g of polyhydrogen methyl oxime The emulsion of the alkane (solids content 44%) was mixed with 91 g of water under stirring. The solids content given is the weight fraction which can be determined by weighing the weight after evaporation of the liquid component.

The mixture was thickened with 270 g of a stock solution consisting of methyl hydroxyethyl cellulose under stirring. To prepare the stock solution, 29.1 g of methyl hydroxyethyl cellulose (solid content 100%) was stirred into 970.9 g of water and allowed to swell for 48 h at room temperature. The viscosity of the stock solution is from 50,000 cp to 75,000 cp.

After the stock solution was added, the mixture was stirred. Next, the mixture was foamed into a 2 liter foam using a foam mixer.

The foam was applied to a nonwoven fabric composed of fibers melt-spun by a polyurethane having a basis weight of 30 g/m ² using a 200 μm doctor blade and dried at 130 ° C to 150 ° C for 15 s to 90 s in a convection oven. A foam coating having a basis weight of 27 g/qm was produced. As the carrier material for the nonwoven fabric, a spunbonded nonwoven fabric composed of polypropylene having a basis weight of 20 g/qm can be used. Other carriers from which the nonwoven fabric can be detached without damage are also suitable. The lining can be processed as an outer layer fabric for the stitching lining.

Example 3: Preparation of a sewable interlining according to the present invention by means of a knife coating method

413 g of aqueous vinyl acetate-polymer dispersion based on acrylamide, ethylene and N-methylol acrylamide (solids content 55%) and 318 g of ammonium stearate-based foaming agent (solids content 30 %) and 103 g of a polyhydrogen methyloxane-based emulsion (solid content 44%) and water mixed with g under stirring. The solids content given is the weight fraction which can be determined by weighing the weight after evaporation of the liquid component. The mixture was thickened with 154 g of a stock solution consisting of methyl hydroxyethyl cellulose under stirring. To prepare the stock solution, 29.1 g of methyl hydroxyethyl cellulose (solid content 100%) was stirred into 970.9 g of water and allowed to swell for 48 h at room temperature. The viscosity of the stock solution is from 50,000 cp to 75,000 cp.

After the stock solution was added, the mixture was stirred. Next, the mixture was foamed into a 2 liter foam using a foam mixer.

The foam was applied to a nonwoven fabric composed of fibers melt-spun by a polyurethane having a basis weight of 50 g/m ² using a 200 μm doctor blade and dried at 130 ° C to 150 ° C for 15 s to 90 s in a convection oven. A foam coating having a basis weight of 15 g/qm was produced. As the carrier material for the nonwoven fabric, a spunbonded nonwoven fabric composed of polypropylene having a basis weight of 20 g/qm can be used. Other carriers from which the nonwoven fabric can be detached without damage are also suitable. The lining can be processed as an outer layer fabric for the stitching lining.

Example 4: Preparation of a bondable interlining according to the invention by means of a knife coating method

413 g of aqueous vinyl acetate-polymer dispersion based on acrylamide, ethylene and N-methylol acrylamide (solids content 55%) and 318 g of ammonium stearate-based foaming agent (solids content 30 %) and 103 g of polyhydrogen methyloxane-based emulsion (solid content 44%) and 130 g of hot melt adhesive based on polyurethane (solid content 100%) having a melting point of 110 ° C (+/- 10 ° C) The powder was mixed with 12 g of water under stirring. The solids content given is the weight fraction which can be determined by weighing the weight after evaporation of the liquid component.

The mixture was thickened with 154 g of a stock solution consisting of methyl hydroxyethyl cellulose under stirring. To prepare the stock solution, 29.1 g of methyl hydroxyethyl cellulose (solid content 100%) was stirred into 970.9 g of water and allowed to swell for 48 h at room temperature. The viscosity of the stock solution is from 50,000 cp to 75,000 cp.

After the stock solution was added, the mixture was stirred. Next, the mixture was foamed into a 2 liter foam using a foam mixer.

The foam was applied to a nonwoven fabric composed of fibers melt-spun by a polyurethane having a basis weight of 45 g/m ² using a 200 μm doctor blade and dried at 130 ° C to 150 ° C for 15 s to 90 s in a convection oven. A foam coating having a basis weight of 20 g/qm was produced. As the carrier material for the nonwoven fabric, a spunbonded nonwoven fabric composed of polypropylene having a basis weight of 20 g/qm can be used. Other carriers from which the nonwoven fabric can be detached without damage are also suitable. The lining can be processed as an outer layer fabric for the stitching lining.

Example 5: Preparation of a sewable interlining according to the invention by means of foam impregnation

The nonwoven fabric composed of fibers melt-spun from a polyurethane having a basis weight of 50 g/m ² was impregnated with a foamed mixture. Foam mixture consisting of 113 g of water, 194 g/L of an aqueous copolymer dispersion based on acrylic copolymer (solid content 45%), 4 g/L of cross-linking agent based on diisooctylsulfonated succinate (solid content) 71%), 2 g/L of alkanesulfonate-based crosslinker (solids content 70%), 7 g/L of terpene resin based lubricant (40% solids) and 680 g/L of alkanes ( Phase change material of octadecane (solid content 45%). The wet non-woven fabric is dried in a belt dryer at 150 ° C to 180 ° C for 20 s to 60 s. A film having a basis weight of 55 g/qm was produced. The non-woven fabric can be processed as an outer fabric of a stitched lining.

Example 6: Preparation of a bondable interlining according to the invention with a hot melt adhesive coating

The lining prepared according to 2) was printed in a rotary screen with 3.5 g of (solid) printing paste by means of a perforated grid pattern (CP 180) and then sprinkled with 5 g of a copolymerization range of 75 ° C to 135 ° C. The guanamine-hot melt powder and dried in a dryer at 180 ° C for 30 s to 60 s, the printing paste consists of 343 g of water, 608 g / L of a polyurethane-based aqueous polymer dispersion (solid content 49%) ), 8 g/L of anti-foaming agent based on polydimethyl methoxyane emulsion/auxiliary (solid content 33%), 10 g/L of nonionic surfactant-based emulsifier (solid content 83%) 19 g/L of polyethylene glycol-based glidant (100% solids content), 2 g/L of 25% ammonia water and 10 g/L of thickener based on a formulation composed of polyacrylate (solid content 80%) constitutes.

Comparative Example 1: a fleece-resistant interlining, a stable fabric having a basis weight of 57 g/m ² corresponding to the prior art

 Testing the relevant parameters of the lining cloth according to the invention    I. Anti-velvet  

The inspection of the fleece resistance is carried out according to the Chinese Standard Test Method GB/T 12705.2-2009 "Textile-Methods of testing the down-proof properties of fabrics-Part 2 Tumble test".

A number of penetrating particles of less than 15 is considered acceptable. It is shown that the lining cloth according to the present invention has relatively good anti-textile properties like the anti-textile fabric of Comparative Example 1. However, the interlining is significantly less slippery, which simplifies its workability.

 II. Pulling characteristics, maximum tensile force, maximum tensile strength  

Tests for maximum tensile strength and maximum tensile strength as a measure of the tear strength according to DIN EN ISO 29073-03:1992 by means of the following variables: direction of stretching: longitudinal direction, transverse direction of the textile

Inspection equipment: Zwick, model BZ 1.0/TH1S.

The results exemplified in Table 1 show that the lining according to the present invention according to Example 1 has a high maximum tensile strength with a good maximum tensile value. The lining from Comparative Example 1 exhibited a significantly smaller maximum tensile strength in the longitudinal direction and the transverse direction so as to be considered less elastic or less stable.

The test of the tensile properties is carried out according to DIN 538352:1981-08 as a hysteresis measurement by means of the following variables: direction of stretching: longitudinal direction, transverse direction of the textile

Sample length: 150mm

Sample width: 50mm

Free lining length: 100mm

Inspection equipment: Zwick, model BZ 1.0/TH1S.

Pre-energizing: 0.05N

Loop: 5

Speed per loop: 50mm/min.

1) Upper reversal point: 25% elongation

2) Lower reversal point: 0.05N force

Test atmosphere: 22 ° C / 50% relative humidity

The measurement results are shown in Table 2.

The lining from Comparative Example 1 did not exhibit the elastic properties. Thus, the interlining can be considered to be less elastic or less stable. The lining according to the present invention according to Examples 1 and 2 exhibited tensile properties. The interlining can be stretched non-destructively in the longitudinal and transverse directions up to a 25% elongational upper reversal point and here has a residual elongation of less than 10% and a permanent elongation of less than 12%.

 III. Breathability  

The test for gas permeability is carried out according to DIN EN ISO 9237:1995-12 with the aid of the following changes: Inspection pressure: 200 Pa

Test result: expressed in dm ³ /s×m ²

Inspection equipment: Textex FX 3300

Sample width: 10cm

According to DIN 50014 / ISO 554: gas permeability is determined at a test pressure of 200 Pa.

The lining was unstitched and inspected after suturing with the outer fabric.

The measurement is carried out after removing the carrier material from the nonwoven fabric.

The smaller the measured value of the gas permeability obtained, the higher the thermal effect of the outer fabric/liner composite structure.

Table 3 shows that the lining according to the invention in combination with the outer fabric produces reduced gas permeability, resulting in an improved thermal effect of the outer fabric/liner composite structure.

 IV. Dimensional change / shrinkage  

The shrinkage is measured according to DIN EN ISO 5077:2008-04 and DIN EN ISO 3759:2011-08 and DIN EN ISO 6330:2012. Wash once at 40 °C.

Table 4 shows that the shrinkage of the interlining according to the present invention according to Examples 1 and 2 is very small. This is surprising in this respect, since when using foam coatings and thermoplastic fibers based on vinyl acetate copolymers and/or polyacrylates and/or polyurethanes having a low softening temperature and/or glass transition temperature The increased shrinkage characteristics during washing are intended to be expected. According to the present invention, the interlining from Comparative Example 1 which does not have a component having a softening temperature and/or a low glass transition temperature has a small shrinkage.

 V. Separation force  

In order to check the adhesion tendency during heat treatment, the two layers of the interlining were superposed on each other and between the release papers using a Kennegiesser model of the Multistar DX 1000/C/T/TA hot melt adhesive at a temperature of 120 ° C and 0.5 Bonded for 12 s under bar pressure and at a speed of 5.7 m/min.

Next, the separation force of the lining/liner composite structure is determined.

The test of the separation force is carried out according to DIN 54310:1980-07 by means of the following variables: direction of stretching: longitudinal direction of the textile

Sample length: 150mm

Sample width: 50mm

Spinning length: 150mm

Measuring path: 100mm

Inspection equipment: Zwick, model BZ 1.0/TH1S.

Pre-energizing: 0.1N

Test speed: 150mm/min

Test atmosphere: 22 ° C / 50% relative humidity

The higher the test value of the separation force, the stronger the heat bonding of the lining under the action of temperature. The gap value of the sample with the tears indicates complete bonding, which cannot be separated without damage. Non-destructive separability is given in the mean without the tear.

The results of Table 5 show that the lining according to the invention according to Example 1 is only weakly bonded under the given heat, so that the lining can be separated again without damage.

This is surprising in this respect, since when foam coatings and thermoplastic fibers based on a softening temperature and/or a low glass transition temperature of vinyl acetate copolymer and/or polyacrylate and/or polyurethane are used, The improved bonding tendency under heat treatment was originally expected.

 VI. Glass transition temperature Tg  

Inspection equipment: DSC1 (Mettler Toledo)

Heating rate (K/min): 10

Claims (15)

 A bielastic lining comprising a meltblown nonwoven fabric comprising melt spun meltblown polyurethane fibers, wherein the nonwoven fabric has a foam coating on at least one side, the foam overlay The layer comprises a vinyl acetate copolymer and/or a polyacrylate and/or a polyurethane.    The interlining of claim 1, wherein the polyurethane fiber of the melt-spinning has a weight share of the total weight of the interlining of between 30% and 90% by weight.    The interlining of claim 1 or 2, wherein the foam coating comprises a weight fraction of the total weight of the interlining in the range of 20% by weight to 80% by weight.   The interlining according to any one or more of the preceding claims, wherein the interlining has a grammage of from 30 g/m ² to 90 g/m ² .  The interlining of any one or more of the preceding claims, wherein the meltblown polyurethane fibers have a titer of less than 1 dtex.    The interlining according to any of the preceding claims, wherein the vinyl acetate copolymer is a vinyl acetate-ethylene copolymer.    The interlining according to one or more of the preceding claims, wherein the vinyl acetate copolymer has a glass transition temperature Tg of from -20 ° C to +20 ° C.    A lining according to any one or more of the preceding claims, wherein the vinyl acetate copolymer and/or polyacrylate and/or polyurethane are present in an at least partially crosslinked manner.    A lining as described in any one or more of the preceding claims, wherein the crease is reduced to 5%.    A lining according to any one or more of the preceding claims, wherein the foam coating has a porous structure in which more than 50% of the pores have a diameter of from 1 μm to 100 μm as measured according to DIN ASTM E 1294 The diameter in the range.   A lining according to any one or more of the preceding claims, wherein the gas permeability measured according to DIN EN ISO 9237:1995-12 is preferably between 10 [dm ³ /s × m ² ] and 450 [dm ³ /s × In the range of m ² ].  A lining according to any one or more of the preceding claims, wherein the foam coating has an average layer thickness in the range of from 5 μm to 400 μm.    The lining of any one or more of the preceding claims, wherein the lining is constructed as a stitching lining.    A method for the preparation of a lining according to any one or more of the preceding claims, comprising the steps of: a. preparing and/or providing a meltblown nonwoven fabric comprising melt spun meltblown polyurethane fibers b. Applying a foam coating comprising a vinyl acetate-ethylene copolymer and/or a polyacrylate and/or a polyurethane to the nonwoven fabric.    A down-filled textile product, in particular selected from the group consisting of a jacket, a bedding, a cushion, a mattress or a sleeping bag, the textile product comprising a textile wrap and a downhole contained therein, wherein the wrapper comprises a request The interlining for preventing down-drilling according to any one or more of items 1 to 13.