KR20080056304A - Fixable interlining material - Google Patents

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

Fixable Interlining Material {FIXABLE INTERLINING MATERIAL}

The present invention relates to a fixable fibrous planar structure which can be used in particular in the textile industry as an interlining material, wherein the fixable fibrous planar structure according to the invention comprises a carrier based on a nonwoven, a woven fabric, a knitted fabric, a mesh or the like, At least one side of the carrier is provided with an adhesive coating.

The interlining material is an invisible frame of clothing. Interlining materials provide precise custom molding and the best wearing comfort. Depending on the application, the interlining material supports processability, increases functionality and stabilizes clothing. The functions can be applied in the field of technical textiles such as the furniture industry, cushion industry and the home textile material-industry, in addition to the garment.

The interlining material may consist of a nonwoven, woven, mesh or similar fibrous planar structure, in which the planar structure is usually provided with additional adhesive, so that the interlining with the upper material is mostly thermally and / or pressure Can be glued (fixed interlining). The interlining is thereby fixed to the upper material. The various fiber planar structures described above have different intrinsic property profiles depending on the method of manufacture. The fabric consists of threads / yarn in the warp and weft directions, and the mesh consists of threads / yarns that join into a single fiber planar structure through a mesh connection. Nonwovens consist of individual fibers that are thermally, mechanically or chemically connected. Different methods for producing fiber planar structures are known and described in the patent literature.

The upper material used for the garment is likewise prepared according to known methods. In order to obtain the most uniform bond between the top material and the interlining material, the property profile of the interlining material must be suitable for the property profile of the top material. Important criteria in traditional applications are the feel, the surface haptic of the upper material / interlining material combination, and in some cases the adhesion of the interlining material to the upper material. Further requirements arise in the retention properties of the top material / interlining material-bond, for example in the case of laundry or chemical cleaning. Another criterion important in this application is the possibility of long term use or the response of the interlining material in the garment upon use. The functional properties of the interlining material can be transferred to the top material or support the specificity of the top material.

Examples of interlining materials having functional properties that support the properties of the top material are, for example, interlining materials having elastic properties. As the elastic upper material, an interlining material preferably having expansion characteristics or elastic characteristics is used. Further examples are interlining materials having waterproof properties, for example supporting hydrophobic properties similar to the top material.

The fixable interlining material typically consists of a fiber carrier (fabric, mesh, nonwoven, knitted fabric, etc.), one side of which is provided with an adhesive coating. The adhesive can be activated by heat and is usually made of a thermoplastic polymer. Techniques for applying the adhesive coating on the carrier (eg powder point method, paste compaction method, double point method, dispersion method, hot-melt method) are known and described in the patent literature.

A disadvantage of the known fixable interlining material is that the process by which the functional properties of the carrier material are transferred to the top material is adversely affected by the adhesive coating between the carrier and the top material. In addition, the possibility of conveying various functional characteristics is also very limited.

The object of the present invention is to produce a fixable fibrous planar structure which can be used as a particularly fixable interlining material in the textile industry, for example optimized in terms of delivering functional properties to the top material.

The problem is solved by a fixable fiber planar structure having all the features of patent claim 1. Preferred embodiments are described in the dependent claims.

According to the present invention, a fixable fibrous planar structure which can be used in particular in the textile industry as an interlining material, comprises a carrier based on nonwovens, fabrics, knits, meshes, etc., provided with an adhesive coating on at least one side of the carrier In at least one additional layer of fiber and having a predetermined functionality is applied on the adhesive coating.

The invention is described below by way of example of using the fibrous planar structure according to the invention as a fixable interlining material in the textile industry, without limiting generality. However, the use of the fixable fibrous planar structure according to the invention is not limited to such applications. Other applications are also conceivable, for example, can be used as a fixable fibrous flat structure in the field of home textile materials, such as cushion furniture, reinforcing sheet structures, for example in a seat cover or a fixed and expandable fibrous flat structure in an automobile mounting. It can also be used for. The following embodiments can be applied without any problem to other applications of the fixable fibrous planar structure according to the invention, for example, as described above.

In a fixed state, for example, in the garment, an additional layer of fiber is arranged between the carrier of the interlining material and the top material. The fixing of the interlining material can be done, for example, by methods conventional in the textile industry (eg stationary presses). This method results in additional functionality added to the functionality of the carrier material in a fixed state with the top material, depending on the fiber layer used. The functionality is oriented to the top material and can exert the best function by intimate contact of the top material. Further added or modified functionality as described above may be bulky interlining tactile, elastic, ductile, hand, static, color, odor blocking, water vapor permeability, wind impermeability, damping, insulation, enhanced adhesion to the top material, and the like. have. Such examples are exemplary, and the functionality that can be obtained is not limited to these examples. The functional properties of the additional fiber layer and the functional properties of the carrier can be reinforced because they can be the same, or they can be applied in different fields. Thus, it may be desirable to elastically form two layers, namely a carrier and an additional fiber layer, to increase the elasticity of the top material. One example of the different functional properties is the case of making additional fiber layers from waterproof equipment and elastic fibers of the carrier material.

Surprisingly in the present invention, the fixable fiber planar structure according to the invention adhered very well to the top material despite the additional fiber layer on the adhesive layer. Covering the adhesive layer does not significantly reduce the adhesion to the top material as compared to the uncovered adhesive layer, as further described in the Examples section. The reason may be that the heat softened adhesive at least partially penetrates the additional fiber layer towards the upper material upon fixation to the upper material and creates an adhesive state there.

On the other hand, when covering the adhesive layer, there is a reduced risk of the layers being glued or interconnected (interlining material / interlining material).

The solution according to the invention also enables the standardization of the carrier and the adhesive layer which is later provided with an additional fiber layer. This standardization allows for an economical manufacturing method, since the properties of the fixable fibrous planar structure can be changed again at a later stage of processing.

As a carrier for the fixable fibrous planar structure according to the invention, nonwovens, wovens, knits, meshes and the like can be used. The carrier may consist of a single layer or of a plurality of layers.

The adhesive coating is generally formed from a polymer, preferably a thermoplastic polymer. The thermoplastic polymer may be based, for example, on polyester, polyamide, polyolefin or polyurethane or ethylvinylacetate. Combinations or mixtures of the various polymers are possible. The adhesive coating may be provided continuously over the entire surface of the carrier, but may be provided discontinuously, for example in the form of a dot pattern or the like.

Application of the adhesive can be by any known method (eg powder point method, paste compaction method, double point method, dispersion method, hot-melt method). The use of the double point method is preferred because it achieves a very good adhesion state by the method. The reason may be that in this method the adhesive penetrates further fiber layers very directionally. In the case of using the dual point method, covering the adhesive layer with an additional fibrous layer according to the invention results in a further advantage that a few adhesive particles can be separated.

The additional fiber layer may consist of one layer or may consist of multiple layers. The additional fiber layer or individual layers may comprise natural fibers and / or chemical fibers. The additionally provided fibrous layer is adhered onto the carrier / adhesive-bonding by a stable mechanical and / or thermal (if the adhesive is slightly melted) connection method under the control of the treatment procedure. The complex may optionally be bound more strongly chemically and / or via needling (mechanical or water-jet connection).

Examples of suitable chemical fibers are polyesters, polyamides, regenerated cellulose fibers, polyolefins, polyurethanes or their respective copolymers and variants, and optionally embedded in fiber aids or fibers such as silicones, antistatic agents and the like. Active substances (such as flame retardants, etc.) are further provided. The chemical fibers may be staple fibers or direct melt spun infinite (eg spun-bonded nonwovens) or direct melt spun infinite fibers (eg meltblown-fibers). Suitable polymers for melt spinning processes are, for example, all known types of fiber forming thermoplastics. In particular all fibers having a thickness of up to 10 dtex are suitable. In the case of coarse fibers whose fiber thickness exceeds 10 dtex, the fiber strength generally increases to such an extent that it is no longer used for this purpose.

Particularly suitable thickness fibers are micro fibers having a thickness of less than 1 dtex. In the case of using such microfibers, it was shown that the additional fiber layer forms a structure of uniform density, so that the functional properties, such as a predetermined elasticity, are formed uniformly in the entire layer.

Interlining materials that are used very frequently with functional properties are interlining materials suitable for transferring a functionality called "elastic property" to the upper material. Such interlining materials have an additional fiber layer of elastic fibers on the adhesive side of the interlining material according to the invention.

Melt-spun fine fibers of elastic polymer are particularly suitable for this purpose.

Elastic fine fibers are preferably produced by spinning methods. In particular the elastic microfibers can be spun directly onto the adhesive coating of the interlining material in a simple and economical way, generally when such microfibers are added as an adjuvant or This is because it has an adhesive property suitable for firmly adhering to the lower layer without action.

Melt-blown based melt spinning methods are particularly suitable for this purpose, because by this method a very thin and uniform fiber structure can be obtained as a functional layer.

Suitable melt-spun elastomeric polymers are in particular all elastic fiber-forming thermoplastics such as, for example, elastic copolyesters (such as copolyetheresters) and elastic copolyamides (such as polyether-block-copolyamides). Particular preference is given to elastic polyurethanes which are based on polyester-, polyether- and / or polycaprolactone-chemistry and which have aromatic and / or aliphatic chains.

Good adhesion with the top material is achieved especially when the weight per unit area of the additional fiber layer does not exceed 30 g / m ² . If the weight per unit area is greater, the adhesion to the top material generally decreases more strongly by increasing the covered portion of the adhesive coating. Particularly good adhesion is achieved when the weight per unit area is less than 15 g / m ² . The indication of the lower limit of weight per unit area is meaningless because the lower limit depends on the desired effect and in particular also on the desired intensity of the functionality to be delivered to the further layer. Such information may be investigated by a person skilled in the art in a simple manner with reference to some routine-experiments. In one further preferred embodiment of the invention the fiber material and / or fixation temperature of the further fiber layer is chosen such that the fiber layer melts easily upon fixation with the upper material, thus assisting in the bonding process together. In this case, on the one hand, by interfering with the functional properties of the carrier material of the interlining material or by supplementing further functional properties, and on the other hand by reaching a very good adhesion state due to the further adhesion action of the fibers, the inter The functional properties of the lining material can be transferred very well to the top material. In this case, the thickness of the additional fiber layer is also not limited to the above-mentioned limit value.

Each melting point of the fiber polymer used in the additional fiber layer is determined according to the required property profile of the fixable interlining material. In order to ensure that the fibrous structure of the additional fiber layer does not melt, for example, when flattening the garment containing the interlining material according to the invention, for example when flattening with a very hot electric iron or when steaming the garment intensively. Fiber polymers having a melting point greater than < RTI ID = 0.0 >

This application describes a variant of an interlining material coated with one side, which is most often used without limitation of generality. However, the present invention can also be applied to a fixable fibrous planar structure in which the front and back surfaces comprise an adhesive coated carrier. In such a fixable fibrous planar structure, the additional fiber layers according to the invention are provided only in one adhesive coating and can also be provided in two adhesive coatings.

The invention is described in detail below with reference to embodiments and drawings without limitation of generality.

Table 1 shows, for various interlining materials with different base materials and adhesive coatings, each of which is structurally similar to the primary adhesion strength value of the product example (“a” -example) without the additional fibrous layer. The results of a direct comparison of the primary cohesion values of the example product (“b” -example) with different additional fiber layers according to the invention are shown.

The additional fiber layer was provided by directly spinning the thermoplastic polymer with different weight per unit area in the meltblown-equipment with the adhesive side.

The interlining material described in Table 1 was immobilized on the in-house burlap-top material for a period of 12 seconds on a circulation press at 140 ° C. Adhesion is determined according to DIN 54310 or DIN EN ISO 6330. In the adhesion test, if the adhesion state of the upper material / interlining material is strong enough that the interlining material is torn before the peeling process is completed, the adhesion values listed in the table are indicated by “sp”. In this case, the maximum desired is reached, since the adhesion state is basically stronger than the internal strength of the interlining material. In contrast, the filling process of the layers is indicated by "MW".

Table 1: Primary Cohesion Measured on Various Patterns

Description of Table 1:

TPU meltblown ⁽¹⁾ : Shore A hardness of 85, MFI 17 at 210 ° C, 2.16 kp and melting range of 170-184 ° C (Coupler heating bank-poison; Koflerheizbank), water content below 0.1% Thermoplastic aromatic polyurethanes based on polyester spun on standard-meltblown installations.

TPU melt blown ⁽²⁾ : Thermoplastic aromatic poly based on polyether spun on a standard-melt blown installation with a Shore A hardness of 85 and a melting range of 160-175 ° C. and a moisture content of less than 0.1%. urethane.

PES Meltblown ⁽³⁾ : Copoly spun on standard-meltblown plants with a Shore D hardness of 36, MVR 30 at 210 ° C, 2.16 kp, and a melting point of about 195 ° C and a moisture content of less than 0.1% Thermoplastic elastomers based on esters.

NW: randomly placed nonwoven fabric, thermally calendered, made of staple fibers, according to the PS-method, at a 12% embossed weld face.

G: fabric

It can be seen that the interlining material pattern “b” according to the invention has a completely equal primary adhesion to the interlining material without the additional fiber layer, even though the adhesive coating is covered with the additional fiber layer. Thus, despite covering the adhesive coating, the adhesion state to the top material is not adversely affected by the additional fiber layer.

Table 2 lists the elastic results measured in interlining materials made of different materials with additional fiber layers and without additional fiber layers to demonstrate the process by which the functional properties of the additional fiber layers are transferred to the top material. .

The following patterns were produced:

Pattern 1b: 25 g / m ² , PS reinforced, 9 g / m ² polyamide adhesive after double point treatment with cp 52 template and 10 g / m ² polyurethane fiber layer further provided according to the present invention Nonwoven fabric consisting of 70% polyamide staple fiber of 1.7 dtex / 30% polyester staple fiber coated with 1.7 dtex (similar to pattern 1b in Table 1).

Pattern 1a: 25 g / m ² , PS reinforced, 70 d polyamide staple fiber / 1.7 dtex of 1.7 dtex coated with 9 g / m ² polyamide adhesive after double point treatment with cp 52 template Non-woven fabrics commonly traded in markets consisting of polyester staple fibers (similar to pattern 1a in Table 1).

Pattern C: 24 g / m ² , canvas bonded, consisting of 100% polyester yarn of dtex 33f18 coated with 9 g / m ² polyamide double point coating using cp 52 template Double elastic fabrics commonly traded on the market.

Pattern D: 35 g / m ² , PS reinforced, typically composed of 1.7 dtex 100% polyamide staple fiber coated with 10 g / m ² polyamide adhesive after dual point treatment with cp 52 template Nonwovens traded.

The above-described patterns were subjected to the tests labeled MI and MII, described below, using a pinching test machine. The measurement results are listed in Table 2.

Measurement MI: The material is expanded transversely at about 3 N / 5 cm and a percent expansion is determined at about 3 N / 5 cm. The product is relaxed after the test and the test is repeated 10 times in the same pattern. Table 2 lists the measurement data after one, five and ten measurements.

After ten measurements, it is determined whether the sample body / good has elongated during the measurement cycle. The stretch state, i.e. the non-return state, of the goods is indicated by a percentage change relative to the original length. To determine this value, the sample body is described in length defined before the start of the measurement.

Measurement MII: Inflate the material to about 20% in the transverse direction and measure the power required for about 20% to expand. The product is relaxed after the test and the test is repeated 10 more times in the same pattern. Table 2 lists the measurement data after one, five and ten measurements.

After ten measurements, it is determined whether the sample body / good has elongated during the measurement cycle. The stretch state, i.e. the non-return state, of the goods is indicated by a percentage change relative to the original length. To determine this value, the sample body is described in length defined before the start of the measurement.

Table 2: Elasticities measured in various patterns

Measurement MI shows that the standard interlining nonwoven pattern 1a repeats expansion and relaxation at small powers, but after the continuous measurement is completed, the interlining material pattern 1b according to the present invention is stretched much more. This measurement shows that the interlining material 1b (with an elastic additional fiber layer) according to the invention has a much improved recovery compared to the pattern 1a constructed in the conventional manner, and with it a much better elastic property. Is showing. Since the two patterns have a similar structure except for the additional fibrous layer of pattern 1b, the measurement results described above are certain that the cause of the excellent elastic properties of the pattern 1b according to the invention is due to the elastic properties of the additional fibrous layer. It is evidence. In combination with the top material, the properties are transferred to the top material. Pattern C is a double elastic fabric interlining commonly traded on the market, and pattern D can be expanded much less severely than the interlining material pattern 1b according to the present invention by means of said relatively small power, thereby providing Compared with the interlining material pattern 1b accordingly.

In measurement MII, the materials are repeatedly loaded until 20% of the material is expanded. The interlining material pattern 1b according to the present invention shows excellent restoring force when the expansion force is low, consistent with the above-described measurement results. The elongation of the material sample of pattern 1b after the passage of the measurement cycle is similarly small, and from this fact it is possible to infer the excellent recovery capacity of the material. Standard nonwoven pattern 1a expands repeatedly, but the sample stretches very much and does not recover. In other words, the material is not elastic. This measurement also demonstrates the action of the elastic additional fiber layer according to the invention on the top material.

Pattern D could not withstand the load sufficiently and torn during testing. The product may not be fully inflated and is not elastic. A typical double elastic fabric interlining pattern C must be consumed even higher power because the material is stretched during the measurement. At the same time, the elasticity decreases as the test passes. Thus, Material C, a prior art of double elastic fabric interlining, is not suitable for 20% reversible expansion.

In summary, the measurement results in Tables 1 and 2 show that the interlining materials according to the present invention are far superior to conventional materials in terms of their good expansion and relaxation properties due to the additional fiber layer. . It can also be seen that in the case of the interlining material according to the invention, even if the adhesive layer is covered with an elastic additional fiber layer, the adhesion state to the upper material is not adversely affected.

1 is a schematic cross-sectional view of a fixable fibrous planar structure according to the present invention.

In figure 1 it is possible to see a fixable planar structure 1 according to the invention comprising a carrier 2 with an adhesive coating 3 and an additional fiber layer 4 on the adhesive coating 3. The adhesive coating 3 is applied discontinuously. The adhesive coating is formed by the adhesive point 5 without limitation of generality in the embodiment shown. The process in which the functional properties of the fibrous layer are transferred to the top material is particularly effective because the additional fiber layer is in direct contact with the top material, not shown in the figures, and in particular fixed engagement with the top material. .

Claims (7)

In a fixable fibrous planar structure comprising a carrier based on a nonwoven, woven, knitted, mesh, etc., wherein an adhesive coating is provided on at least one side of the carrier, which can be used in particular in interlining materials in the textile industry, And at least one additional layer of fiber and having a predetermined functionality is applied on the adhesive coating. The method of claim 1, And the further fiber layer comprises fibers having a fiber thickness of less than 1 dtex. The method according to claim 1 or 2, And the additional fiber layer comprises elastic fibers. The method according to any one of claims 1 to 3, And the further fiber layer comprises melt spun fibers. The method according to any one of claims 1 to 4, And the further fiber layer comprises melt spun fibers, wherein the melt spun fibers can be at least partially melted under pressure and temperature action to secure the fiber planar structure. The method according to any one of claims 1 to 5, And wherein said adhesive coating is applied only to a partial region of said carrier. The method according to any one of claims 1 to 6, And the adhesive coating is a double point coating.

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