WO2007062712A2

WO2007062712A2 - Fixable interlining material

Info

Publication number: WO2007062712A2
Application number: PCT/EP2006/009423
Authority: WO
Inventors: Oliver Staudenmayer; Manfred Jöst; Peter Rudek
Original assignee: Carl Freudenberg Kg
Priority date: 2005-11-29
Filing date: 2006-09-28
Publication date: 2007-06-07
Also published as: CN101316701A; CN101316701B; KR101045468B1; WO2007062712A3; TW200730693A; JP5145239B2; DE102005057221A1; KR20080056304A; TWI334827B; EP1954484A2; JP2009517249A

Abstract

The invention relates to a fixable textile fabric which can be used especially as an interlining material in the textile industry. The inventive fixable textile fabric comprises a carrier based on a non-woven fabric, a woven cloth, a knitted fabric or the like, which is provided with an adhesive coating at least one side. At least one additional layer consisting of fibres and having a pre-determined functionality is applied to the adhesive coating.

Description

Applicant: Company Carl Freudenberg KG ₁ 69469 Weinheim

Fixable interlining material

description

The invention relates to a fixable textile fabric, in particular usable as interlining fabric in the textile industry, with a carrier based on a nonwoven fabric, fabric, knitted fabric, knitted or the like, which is provided at least on one side with an adhesive mass coating.

Inlays are the invisible framework of clothing. They ensure correct fits and optimal comfort. Depending on the application, you can improve processability, increase functionality and stabilize clothing. In addition to clothing, these functions can be used in technical textile applications, e.g. Furniture, upholstery and the home textile industry apply.

Inlay fabrics can consist of nonwovens, woven fabrics, knitted fabrics or comparable textile fabrics, which are usually additionally provided with an adhesive mass, as a result of which the insert can usually be adhesively bonded to an outer fabric by heat and / or pressure (fixing inlay). The insert is thus fixed on an outer fabric. The various textile fabrics mentioned have different property profiles depending on the manufacturing process. Fabrics consist of threads / yarns in warp and weft direction, knitted fabrics consist of threads / yarns which are connected by a stitch bond to form a textile fabric. Nonwovens consist of single fibers, which are thermal, mechanical or be chemically bound. The different processes for the production of textile fabrics are known and described in the patent literature.

The outer fabrics used in the clothing are produced by also known methods. In order to achieve the most homogeneous possible bond between the outer material and the interlining material, the property profile of the interlining material must match that of the outer material. Important criteria in the classical application are the grip, the feel of the outer fabric / Einlagestoffverbundes, as well as possibly the adhesion of the interlining fabric to the outer fabric. Further requirements then arise in the care behavior of the outer fabric / Einlagestoff composite z. As in the laundry or dry cleaning. Other important criteria in the application are the serviceability over a long period of time or the behavior of the insert in the garment in use. Functional properties of the interlining material can be transferred to the outer material or support its special features.

Examples of such interliners having functional properties which support the properties of the outer fabric are e.g. Interlining with elastic behavior. For elastic outer fabrics, preference is given to using interlining fabrics with stretch or elastic behavior. Another example is interlining with water-repellent properties, the z. B. support similar hydrophobic properties of outer fabrics.

Fixable interlining usually consists of a textile support (fabric, knitted fabric, nonwoven, knitted fabric, etc.), which is provided on one side with an adhesive coating. The adhesive is thermally activatable and usually consists of thermoplastic polymers. The technology for applying these adhesive coatings to the support (eg, powder dot, paste, colour, scatter, hotmelt) is known and described in the patent literature. A disadvantage of the known fixable interlining materials is that the transfer of a functional property of a carrier material to an outer material is impaired by the adhesive mass coating present between the carrier and the outer material. Furthermore, the possibilities to transfer different functional properties are very limited.

The object of the invention is to provide a fixable, textile fabric, in particular usable as a fixable Einlagestoff in the textile industry, which is optimized in terms of the transfer of functional properties, for example on an outer fabric.

This object is achieved with a fixable textile fabric having all the features of patent claim 1. Preferred embodiments are described in the subclaims.

According to the invention, in the case of a fixable textile fabric which can be used in particular as a fixable interlining material in the textile industry and which has a carrier based on a nonwoven fabric, fabric, knitted fabric, knitted fabric or the like which is provided with an adhesive mass coating at least on one side the adhesive mass coating applied at least one additional layer of fibers having a predetermined functionality.

The invention is described below without restriction of generality using the example of the use of a fixable textile fabric according to the invention as a fixable interlining material in the textile industry. However, the use of a fixable textile fabric according to the invention is not limited to this application. Other applications are conceivable, for example, as a fixable textile fabric in Heintextilien, such as upholstered furniture, reinforced seat structures, eg. B. for seat covers or fixable and stretchable fiber fabrics in the Automotive equipment. The following statements are readily applicable to other applications of the fixable textile fabric according to the invention, for. As the above, applicable.

In the fixed state, for example in clothing pieces, the additional fiber layer between the outer fabric and the carrier of the interlining material is arranged. The fixation of the interlining material can be carried out, for example, with a method customary in the textile industry (for example, a fixing press). Depending on the fiber layer used, this results in an additional functionality in the fixed state which is added to the functionality of the carrier material

Condition with the outer fabric. The functionality is directed towards the outer fabric and can optimally unfold its function through its close contact. The added or changed functionality introduced may be voluminous haptics of the insert, elasticity, softness, feel, antistatic, color, odor inhibition, water vapor permeability, windproofness, damping, insulation, adhesion reinforcement to the outer fabric or the like. These examples are exemplary and the functionality achieved is not limited to these examples. The functional properties of additional fiber layer and carrier can be the same and thus strengthen, or lie in different areas. So it may be advantageous to both layers, d. H. Elastic carrier and additional fiber layer to give the outer fabric increased elasticity. An example of different functional properties are the water-repellent finish of the carrier material and the production of the additional fiber layer of elastic fibers.

It has surprisingly been found in the present invention that the inventive fixable textile fabric adheres very well to the outer fabric despite additional fiber layer on the adhesive layer. As will be shown in the context of the exemplary embodiments, the covering of the adhesive mass layer obviously does not lead to a significant reduction in the adhesion to the outer material compared to an uncoated adhesive mass layer. This could be due to that the thermally softened adhesive mass at least partially penetrates the additional fiber layer towards the outer material during fixing to the outer material, where it provides the bond.

On the other hand, the danger of the bonding or entanglement of the layers to each other (interlining material / interlining material) is reduced by covering the adhesive layer.

The solution according to the invention further allows standardization in the carrier and adhesive layer with a subsequent application of the additional fiber layer. This allows an economical production method, because only in a late process step, the properties of the fixable textile fabric can be changed again.

Nonwovens, woven fabrics, knitted fabrics, knits or the like can serve as a carrier for the fixable textile fabric according to the invention. The carrier may be single or multi-layered.

The adhesive composition is usually formed by polymers, preferably thermoplastic polymers. The thermoplastic polymers may, for example, be polyester-polyamide, polyolefin or polyurethane or ethylvinyl acetate-based. Combinations of the different polymers or blends are also possible.

The adhesive coating may extend continuously over the entire surface of the carrier, but it may also be applied discontinuously, for example in the form of a dot pattern or the like.

Adhesive mass application can be carried out using the well-known methods (eg powder dot, paste printing, double dot, scattering, hotmelt method). Preferably, a double-point method is used, since with this method a very good adhesion is achieved. This could be due to the fact that in this process, the adhesive mass very addressed the additional fiber layer penetrates. When using a double-point method, the cover of the adhesive layer according to the invention with an additional fiber layer has the further advantage that less adhesive mass particles can detach.

The additional fiber layer may be composed of one or more layers. The additional fiber layer or the individual layers may comprise natural and / or synthetic fibers. Depending on the process, the applied fiber layer adheres to the carrier / adhesive composition by a stable mechanical and / or thermal entanglement (if the adhesive slightly melts). If desired, this composite can be additionally bonded chemically or via needles (mechanically or hydroentangled) even more intensively.

Examples of suitable man-made fibers are polyesters, polyamides,

Celluloseregeneratfasern, polyolefins, polyurethanes or their respective copolymers and variations, optionally additionally provided with textile auxiliaries such as silicones, antistatic agents, etc., or in the fiber incorporated active ingredients (such as flame retardants, etc.). The man-made fibers may be staple fibers or directly melt-spun endless (eg, spunbond webs) or directly melt-spun finite fibers (eg, meltblown fibers). Suitable polymers for the melt spinning process are, for example, all known thermoplastic fiber-forming types. In particular, all fiber titers of up to 10 dtex are suitable. For coarser fiber titers, d. H. > 10 dtex increases the fiber stiffness to such an extent that it is generally no longer used for this purpose.

Particularly suitable fiber titers are microfibers with a titre <1 dtex. It has been found that the additional fiber layer forms when using such microfibers with a homogeneous dense structure, whereby also the functional property, eg. B. a predetermined elasticity, homogeneously formed in the entire layer. The most widely used intercalators with functional properties are those which are suitable for transferring the functionality "elastic behavior" to an outer fabric. According to the invention, such interlining materials have an additional fiber layer of elastic fibers on the adhesive mass side of the interlining material.

For this purpose, especially melt-spun fine fibers made of elastic polymers are suitable.

The elastic fine fibers are preferably produced by means of a spinning process. In particular, they can be spun in a simple and cost-effective manner directly to the adhesive coating of the liner, since they are usually sticky enough when hitting the pad to adhere well to the pad without further aids or measures.

For this purpose, melt-spinning processes based on meltblown are particularly suitable since very fine-dense and homogeneous fiber structures can be obtained as a functional layer with these processes.

Particularly suitable as melt-spinnable elastic polymers are all fiber-forming elastic thermoplastics, for example elastic copolyesters (for example copolyether esters), elastic copolyamides (for example polyether block copolyamides), particularly preferably elastic polyurethanes with aromatic and / or aliphatic chains based on polyester, polyether and / or polycaprolactone chemistry.

A good bonding with the outer material is achieved in particular if the basis weight of the additional fiber layer does not exceed 30 g / m ² . For larger basis weights, the adhesion to the outer fabric usually increases greatly due to the increasing coverage of the adhesive mass coating from. For basis weights of less than 15 g / m ² , a particularly good adhesion is achieved. The specification of a lower limit for the weight per unit area does not make sense, since this depends on the desired effect, in particular also on the desired intensity of the functionality of the additional layer to be transferred. This can be easily determined by a person skilled in the art on the basis of a few routine experiments. In a further preferred embodiment of the invention, the fiber material of the additional fiber layer and / or the fixing temperature are chosen so that the fiber layer easily fuses during fixing with the outer material and thus contributes to the bond. In this case, a particularly good transfer of the functional properties of the interlining material can be achieved on the outer fabric, on the one hand by the use of the additional fiber layer, which either enhances the functional properties of the support material of the interlining or added to other functional properties, on the other by the very good adhesion due to the additional adhesive effect of the fibers. In this case, the thickness of the additional fiber layer is not limited to the above limit.

The respective melting points of the fiber polymers used of the additional fiber layer depend on the required property profile of the fixable interlining material. To ensure that in the application z. B. when smoothing a garment with a Einlagestoff invention, for example, with a very hot iron or intensive steaming of the garment, the fiber structure of the additional fiber layer does not melt, fiber polymers should be used with a melting point greater than about 165 ° C.

In the present application, the most commonly used variant of a liner with one-sided adhesive coating is described without loss of generality. However, the present invention is also applicable to such textile fixable sheets comprising a backing having an adhesive coating on the front and back surfaces include. In such a textile fixable fabric, additional fiber layers according to the invention may be provided both on one and on both adhesive mass coatings.

The invention is explained in more detail below without limiting the generality by means of exemplary embodiments and the FIGURE:

embodiments

In Table 1 are for different interlining with different

Base materials and adhesive coatings the Primärtrennkraftwerte of product examples without additional fiber layers ("a" examples) and product examples, each with an analogous structure, but with different additional fiber layers according to the present invention ("b" examples) on the adhesive mass side in a direct comparison.

The application of this additional fiber layer was carried out by direct Bespinnen the adhesive mass side with a thermoplastic polymer with different basis weights on a meltblown system.

The fixation of the interlining materials listed in the table on an in-house batiste outer fabric was carried out on a continuous press at 140 ⁰ C for a period of 12 sec. The determination of the release force is based on DIN 54310 or DIN EN ISO 6330th The separation force values listed marked with "sp", if in the release force test the adhesion

The outer fabric / interlining material is so strong that the interlining ruptures during the test procedure before a complete peeling is performed. This is a desirable maximum value, since the adhesion is in principle stronger than the internal strength of the interlining. A peeling of the layers, however, is marked with "MW". Table 1: Measurement of the primary separation force from different patterns

Explanatory notes to Table 1:

5 TPU meltblown ⁽¹⁾ : polyester-based thermoplastic aromatic polyurethane with a Shore A hardness of 85, MF1 17 at 210 ⁰ C, 2.16 kp and a melting range of 170-184 ⁰ C (Kofierheizbank), spun at a moisture content of <0.1% on a standard Meltblownanlage. TPU meltblown ⁽²⁾ : polyether-based thermoplastic aromatic polyurethane with a Shore A hardness of 85 and a melting range of 160 - 175 ⁰ C, spun at a moisture content of <0.1% on a standard meltblown system.

PES Meltblown ⁽³⁾ : thermoplastic copolyester-based elastomer with a Shore D hardness of 36, MVR 30 at 210 ° C, 2.16 kp and a melting point of about 195 ⁰ C, spun at a moisture content <0.1% on a Standard meltblown plant.

NW: Random nonwoven fabric made of staple fibers, calender-hardened by the PS process with a welding surface of the engraving of 12%. G: Fabric It can be seen that the insert fabric "b" according to the invention, despite covering the adhesive layer coating with an additional fiber layer, has comparable primary separation forces as the insert material without additional fiber layer The adhesion to the outer fabric is thus not impaired by covering the adhesive layer coating by the additional fiber layer.

Table 2 shows the results of elasticity measurements on interlayers of different materials with and without additional fiber layer to demonstrate the transfer of a functional property of the additional fiber layer to the outer fabric.

The following samples were produced:

Sample 1b: A nonwoven fabric 70% polyamide staple fibers in 1.7 dtex / 30% polyester staple fibers in 1.7 dtex, 25 g / m ² , PS solidified and coated with 9 g / m ² polyamide adhesive composition by the double-point method with a cp 52 printing stencil and one according to the invention additionally applied fiber layer of 10 g / m ² polyurethane (analogous to pattern 1b from Table 1). Sample 1a: A conventional nonwoven fabric 70% polyamide staple fibers in 1.7 dtex / 30% polyester staple fibers in 1.7 dtex, 25 g / m ² , PS solidified and coated with 9 g / m ² polyamide Adhesive mass according to the double-point method with a cp 52 printing template (analog Sample 1a from Table 1). Sample C: A commercially available bi-elastic fabric made of 100% polyester yarn dtex 33f18, plain weave, 24 g / m ² , coated with 9 g / m ² polyamide double-dot coating with a cp 52 printing stencil. Sample D: A commercially available nonwoven made of 100% polyamide staple fibers in 1.7 dtex, 35 g / m ² , PS solidified and coated with 10 g / m ² polyamide adhesive according to the double-point method with a cp 52 printing template.

The samples listed above were subjected to the tests described below, designated M I and M II, using a Zwick testing machine. The measurement results are shown in Table 2. Measurement M I: the material is stretched in the transverse direction at about 3 N / 5 cm and the percent elongation is determined at about 3 N / 5 cm. After this test, let the fabric relax and repeat this test on the same sample 10 times. Listed in Table 2 are measurement data after one, five and ten measurements.

After the ten-time measurement, it is determined whether the specimen / product has lengthened during the measuring cycle. The elongation of the product, i. the lack of return is expressed as a percentage change from the original length. To determine this value, a defined length is recorded on the sample body before the start of the measurement.

Measurement M II: the material is stretched transversely to approx. 20% and the force required for an elongation of approx. 20% is measured. After the test, the goods are allowed to relax and the test is repeated ten times on the same sample. Listed in Table 2 are measurement data after one, five and ten measurements. After the ten-time measurement, it is determined whether the specimen / product has lengthened during the measurement cycle. The elongation of the product, ie the lack of return is given in percentage change from the original length. To determine this value, a defined length is recorded on the sample body before the start of the measurement.

Table 2: Elasticity measurements on different samples

Measurements MI show that a standard nonwoven fabric sample 1a can be stretched and relaxed repeatedly with small forces, but a significantly increased elongation after completion of this series of measurements is observed, compared with the interlining fabric 1b according to the invention. The measurement shows that the interlining material 1b according to the invention (with additional elastic fiber layer) has a markedly improved recovery capacity and thus significantly improved elastic properties than the conventionally constructed pattern 1a. Since both patterns, with the exception of the additional fiber layer in pattern 1b, have an analog structure, the above measurement results are a reliable proof that the good elastic properties of the inventive pattern 1b are due to the elastic properties of the additional fiber layer. When combined with an outer fabric, these are transferred to the outer fabric. Pattern C, which is a commercially available bi-elastic fabric insert, and pattern D can be significantly less stretched with these relatively small forces than the inventive insert pattern 1b and are thus disadvantaged compared to this.

When measuring M Il, the materials are repeatedly stressed up to an elongation of 20%. The insert fabric sample 1b according to the invention exhibits good restoring forces at low elongation forces in accordance with the above measurement results. The elongation of the material sample of the pattern 1b after passing through the measuring cycle is also low, which suggests a good recovery of the material. The standard nonwoven pattern 1a can be repeatedly stretched, but the sample experiences a very large

Elongation and has no repetition, i. the material is not elastic. This measurement also confirms the effect according to the invention of the elastic additional fiber layer on the outer material.

Pattern D can not withstand the stresses and tears during the test. The product is not sufficiently stretchy and not elastic. The commercial bi-elastic fabric insert pattern C undergoes an elongation of the material during the measurement, whereby ever higher forces must be expended. At the same time the elasticities are pulled out by the test. The material C _1, which represents the state of the art for bi-elastic fabric inserts, is thus not suitable for reversible elongations of 20%.

In summary, it can be stated that the measurement results in Tables 1 and 2 show that the interlining material according to the invention is clearly superior to the conventional materials in terms of its good extensibility and relaxation properties attributable to the additional fiber layer. Furthermore, it can be seen that, in the case of the interlining material according to the invention, the adhesion to the outer fabric is not impaired by the covering of the adhesive mass layer with the elastic additional fiber layer. figure description

1 shows a schematic cross-sectional illustration of a fixable textile fabric according to the invention.

FIG. 1 shows a fixable sheet 1 according to the invention which comprises a carrier 2 with an adhesive mass coating 3 and an additional fiber layer 4 located on the adhesive mass coating 3. The adhesive coating 3 is applied discontinuously. It is formed in the illustrated embodiment without limitation of generality by adhesive mass points 5. Since the additional fiber layer is in the fixed state in direct contact with an outer material not shown here and in particular firmly connected to this, the transfer of their functional properties is particularly effective on the outer fabric.

Claims

claims

1. A fixable textile fabric, in particular usable as interlining fabric in the textile industry, with a carrier based on a nonwoven fabric, fabric, knitted fabric, knit or the like, which is provided on at least one side with an adhesive composition, characterized in that on the adhesive composition at least one additional layer of fibers, which have a predetermined functionality, is applied.

2. Fixable textile fabric according to claim, characterized in that the additional fiber layer comprises fibers with a titer <1 dtex.

3. Fixable textile fabric according to claim 1 or 2, characterized in that the additional fiber layer comprises elastic fibers.

4. Fixable textile fabric according to one of claims 1 to 3, characterized in that the additional fiber layer comprises melt spun fibers.

5. Fixable textile fabric according to one of claims 1 to 4, characterized in that the additional fiber layer comprises melt-spun fibers which are at least partially fusible when exposed to pressure and temperature for fixing the textile fabric.

6. Fixable textile fabric according to one of claims 1 to 5, characterized in that the adhesive coating is applied only in partial areas of the carrier.

7. Fixable textile fabric according to one of claims 1 to 6, characterized in that the adhesive mass coating is a Doppelpunktbeschichtung.