JP2009517249A - Bondable interlining material - Google Patents

Abstract

The present invention relates to a fixable fibrous planar product, particularly one that can be used as an interlining material that can be used in the textile industry. The fixable fibrous planar product according to the invention comprises a support based on non-woven fabric, woven fabric, knitted fabric, fabric, etc., which is provided with an adhesive coating on at least one side. . On this adhesive coating, according to the invention, at least an additional layer of fibers having a predefined function is applied.

Description

  The present invention is an anchorable (adherable) fibrous planar product that can be used as a core material, especially in the textile industry, based on nonwovens, woven fabrics, knitted fabrics, fabrics or the like And having an adhesive coating on at least one side.

  Interlining material forms the invisible skeleton of clothing. This interlining material provides accurate fit and optimum comfort when worn. Depending on how it is used, interlining materials promote processability, increase functionality and stabilize clothing. In addition to clothing, such functions can be utilized in industrial textile applications, such as the furniture industry, the cushion or polster industry, and the household textile industry.

  The interlining material may consist of non-woven fabrics, woven fabrics, fabrics or equivalent fibrous planar formations, which are usually additionally provided with an adhesive so that the surface of the interlining is mostly thermal. Can be bonded to each other by heat and / or pressure (fixed interlining or adhesive interlining). In this way, the interlining is fixed to the outer surface. The various fibrous planar products have different property profiles depending on the manufacturing method. The woven fabric consists of threads / yarns in the warp and weft directions, and the knitted fabric consists of threads / yarns joined to one fibrous planar formation through the formation of a knitted mesh. Nonwoven fabrics consist of single fibers that are thermally, mechanically or chemically bonded. Various methods for the production of fibrous planar products are known and described in the patent literature.

  Surfaces used in clothing are similarly produced by known methods. In order to bond the outer material and the interlining material as homogeneously as possible, the property profile of the interlining material must be adapted to that of the outer material. Important criteria in customary applications are the feel, the tactile sensation of the surface / interlining material composite, and in some cases the adhesion of the interlining material to the surface. A further requirement is in the care properties of the outer / interlining material composite, for example during washing or chemical cleaning. Another important criterion in use is the long-term durability or behavior of the interlining material in the garment during use. The functional properties of the interlining material can be transmitted to the outer material or can assist the speciality of the outer material.

  Examples of such interlining materials that have functional properties that assist the surface properties are, for example, interlining materials that have elastic behavior. For the elastic surface material, a core material having an elongation behavior or an elastic behavior is preferably used. Another example is an interlining material that has the property of avoiding water, which aids the surface, for example, the similar hydrophobic nature.

  The fixable interlining material consists of a fibrous support (woven fabric, fabric, nonwoven fabric, knitted fabric, etc.) that is usually provided with an adhesive coating on one side. This adhesive can be activated by heat and usually consists of a thermoplastic polymer. Techniques (for example, a powder dot method, a paste printing method, a double dot method, a spraying method, a hot melt method) for applying this adhesive coating to a support are known and described in the patent literature.

  A drawback of the known fixable interlining material is that the transfer of the functional properties of the support material to the surface is impaired by the adhesive coating present between the support and the surface. Furthermore, the means for communicating various functional properties is significantly limited.

  The object of the present invention is a fixable fibrous planar product which can be used as a fixable interlining material, in particular in the textile industry, for example optimized for the transmission of functional properties to the surface material Is to provide.

  This problem is solved by an adherent fibrous planar formation having all the features of claim 1. Advantageous embodiments are described in the dependent claims.

  According to the present invention, a fixable fibrous planar article having a support based on a nonwoven fabric, woven fabric, knitted fabric, fabric or the like, which can be used as a fixable interlining material, particularly in the textile industry Wherein the adhesive coating is provided with an additional layer of fibers having a predefined functionality, wherein the adhesive coating is provided with an adhesive coating on at least one side. Yes.

  Subsequently, the present invention will be described with reference to a use example of the fixable fibrous planar product according to the present invention as a fixable core material in the textile industry without limitation of its generality. However, the use of the fixable fibrous planar product according to the invention is not limited to such use. Fixable and stretchable fibers, for example as fixable fibrous planar formations in household textile products such as upholstered furniture, eg reinforced seat structures for seat covers, or in automotive interiors Other uses as a planar surface formation are possible. The following embodiments can be used without problems, for example, in other applications of the above-described fixable fibrous planar article according to the invention.

  For example, an additional fiber layer (additional fiber layer) is disposed between the outer material and the support material of the interlining material in a state of being fixed in the garment. The interlining material can be fixed by, for example, a usual method in the textile industry (for example, a fixing press or an adhesive press). Thereby, depending on the fiber layer used, additional functionality added to the functionality of the support material is obtained in a fixed state with a surface material. This functionality is suitable for the outer surface, and its function is optimally demonstrated by close contact with the outer surface. This introduced additional or modified functionality includes bulky tactile feel of the interlining, elasticity, flexibility, texture, antistatic, color, odor control, water vapor permeability, air tightness, buffering, insulation Property, adhesion reinforcement to the outer surface, and the like. These examples are exemplary and the functionality achieved is not limited to this example. The function of the additional fiber layer and the support may be the same and thus can be reinforced, but may be in different fields. For example, it is advantageous to form the two layers elastically, i.e. the support and the additional fiber layer, so that the outer material has an increased elasticity. An example of a different functional property is that the support material is provided with a waterproof finish and the additional fiber layer is made from elastic fibers.

  In the present invention, it was surprisingly found that the securable fibrous planar formation according to the present invention adheres very well to the outer surface even with an additional fiber layer on the adhesive layer. As also shown in the examples, the coating of the adhesive layer clearly does not cause a noticeable reduction in adhesion to the surface compared to the uncoated adhesive layer. This is believed to be due to the fact that the adhesive softened by heat penetrates at least partly into the additional fiber layer towards the outer surface when it adheres to the outer surface and provides adhesion there.

  In addition, the risk of adhesion or interlocking of the layers (interlining material / interlining material) is reduced by covering the adhesive layer.

  By the solution according to the present invention, it is possible to standardize the support and the adhesive layer by applying an additional fiber layer later. This allows for an economical production method, since the properties of the fibrous planar product that can be fixed even in later process steps can be changed again.

  Nonwoven fabrics, woven fabrics, fabrics, knitted fabrics, and the like can be used as the support for the fixable fibrous planar product according to the present invention. The support may be a single layer or a multilayer.

  The adhesive coating is usually formed by a polymer, preferably a thermoplastic polymer. The thermoplastic polymer can be based on, for example, polyester, polyamide, polyolefin or polyurethane or ethyl vinyl acetate. Combinations or blends of different polymers are possible as well.

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

  The adhesive can be applied by a well-known method (for example, a powder dot method, a paste printing method, a double dot method, a spraying method, a hot melt method). Preferably, a double dot method is used because very good adhesion is achieved by this method. This is believed to be due to the adhesive being well oriented and penetrating into the additional fiber layer in this method. When the double dot method is applied and the adhesive layer is coated with an additional fiber layer according to the invention, there is a further advantage that the adhesive particles are not peeled off much.

  The additional fiber layer may be composed of a single layer or may be composed of multiple layers. Additional fiber layers or individual layers may contain natural fibers and / or chemical fibers. Depending on the processing method, the deposited fiber layer adheres to the support / adhesive composite by a stable mechanical and / or thermal (if the adhesive is somewhat melted) meshing. This composite can optionally be further strongly bonded, either chemically or by needle (bonded or bonded by mechanical or water flow).

  Examples of suitable chemical fibers are polyesters, polyamides, regenerated cellulose fibers, polyolefins, polyurethanes or their respective copolymers and variants, and in some cases fiber auxiliaries such as silicones, antistatic agents etc. or fibers It is additionally finished with active substances processed and introduced into it (for example flame retardants). The chemical fibers may be staple fibers or direct melt spun endless fibers (eg, spunbond nonwovens) or direct melt spun finite fibers (eg, meltblown fibers). Suitable polymers for the melt spinning process are, for example, all known types of polymers that form thermoplastic fibers. All finenesses up to 10 dtex are particularly suitable. At coarser fineness, i.e.> 10 dtex, the fiber stiffness usually increases to such an extent that it can no longer be used for this purpose.

  A particularly suitable fineness is a microfiber (ultrafine fiber) with a fineness <1 dtex. The additional fiber layer is formed with a uniform and dense structure when such microfibers are used, so that the functional properties of the entire layer, for example a predefined elasticity, are also formed uniformly. It became clear.

  The most frequently used interlining materials with functional properties are interlining materials that are suitable for transmitting the functionality of “elastic behavior” to the surface. According to the present invention, such an interlining material has an additional fiber layer made of elastic fibers on the adhesive side of the interlining material.

  For this, a melt-spun fine fiber (ultrafine fiber) made of an elastic polymer is particularly suitable.

  The elastic fine fiber is advantageously produced by a spinning method. In particular, this fine fiber can be simply and economically spun directly onto the adhesive coating of the interlining material, usually when the fine fiber strikes the backing layer (support). This is because it still has sufficient tack to adhere to the backing layer well without further aids or measures.

  For this reason, a melt spinning method based on meltblown is particularly suitable because it is possible to obtain a very fine and homogeneous fiber structure as a functional layer using this method.

  As melt-spinnable elastic polymers, all elastic thermoplastics which form fibers, such as elastic copolymers (for example copolyetheresters), elastic copolyamides (for example polyether block copolyamides), particularly advantageously Suitable are elastic polyurethanes having aromatic and / or aliphatic chains based on the chemistry of polyesters, polyethers and / or polycaprolactones.

Good adhesion to the dressing is achieved especially when the weight per unit area of the additional fiber layer does not exceed 30 g / m ² . Larger weight per unit area usually results in a very significant decrease in adhesion to the outer surface due to the increased coverage of the adhesive coating. Particularly good adhesion is achieved when the weight per unit area is less than 15 g / m ² . The description of the lower limit for the weight per unit area is meaningless, since the lower limit depends on the desired effect, in particular the desired strength of the functionality to be transmitted of the additional layer. This can be easily calculated by a person skilled in the art based on routine experiments. In another advantageous embodiment of the invention, the fiber material and / or fixing temperature of the additional fiber layer is such that the fiber layer starts to melt easily when bonded to the outer surface, thereby contributing to adhesion together. Selected as. In this case, a particularly good transmission of the functional properties of the interlining material to the surface material, on the other hand, adds to the functional properties of the support material of the interlining material or supplements additional functional properties. With the use of a fiber layer, on the other hand, it can be achieved with very good adhesion based on the additional adhesive action of the fibers. In that case, the thickness of the additional fiber layer is not limited to the above limit value.

  Each melting point of the fiber polymer used in the additional fiber layer follows the required property profile of the fixable interlining material. The fibers of the additional fiber layer when applied in a garment in which the interlining material according to the invention is used, for example in wrinkle stretching, for example when using very hot irons or during intensive steaming of the garment In order to ensure that the structure does not melt, a fiber polymer with a melting point higher than about 165 ° C. should be used.

  In this application, the most frequently used variants of interlining materials having an adhesive coating on one side are described without being limited in generality. However, the present invention can also be used for an adherent fibrous planar formation comprising a support having an adhesive coating on the front and back sides. In the case of such an anchorable fibrous planar product, the additional fiber layer according to the invention may be provided only on one side of the adhesive coating or on both sides of the adhesive coating. Good.

  In the following, the present invention will be described in detail based on examples and drawings without limiting its generality.

  FIG. 1 shows a fixable fibrous planar former 1 according to the invention comprising a support 2 with an adhesive coating 3 and an additional fiber layer 4 present on the adhesive coating 3. The adhesive coating 3 is applied discontinuously. The adhesive coating 3 is formed by the adhesive spot 5 in the embodiment shown here without being limited in its generality. Since the additional fiber layer is in direct contact with the outer surface (not shown) and is particularly firmly bonded to the outer surface, the transmission of the functional properties of the additional fiber layer to the outer surface is particularly effective. is there.

  Table 1 shows examples of products without an additional fiber layer (example of “a”) and various structures with similar substrates (supports) and adhesive coatings, each with similar structure but on the adhesive side The primary separation values of the product examples (example "b") provided with various additional fiber layers according to the present invention are shown in direct comparison.

  The application of this additional fiber layer was carried out by direct spinning on the adhesive side with a thermoplastic polymer at various weights per unit area in a meltblown apparatus.

  The core material described in the table was fixed to the company's batist surface using a continuous press at 140 ° C. for 12 seconds. The separation force was measured according to DIN 54310 or DIN EN ISO 6330. In the separation force test, if the adhesion of the outer material / interlining material is strong enough to cause the interlining material to break before complete debonding during the test, the indicated separation force value is marked with “sp”. did. This is the maximum value that should be targeted because adhesion is basically stronger than the internal strength of the interlining material. On the other hand, the delamination of the layers is represented by the sign “MW”.

  Table 1: Measurement of primary separation force of various samples

Explanation of Table 1:
TPU meltblown ⁽¹⁾ : Standard meltblown apparatus spun at humidity <0.1%, Shore A hardness 85, 210 ° C, MFI 17 at 2.16 kp and melting point range 170-184 ° C (Koflerheizbank )) A polyester-based thermoplastic aromatic polyurethane.
TPU meltblown ⁽²⁾ : A polyether-based thermoplastic aromatic polyurethane spun in a standard meltblown apparatus at a humidity <0.1% with a Shore A hardness of 85 and a melting point range of 160-175 ° C.
PES Meltblown ⁽³⁾ : Thermoplastic copolyester base spun in standard meltblown equipment with humidity <0.1%, Shore D hardness 36, 210 ° C., MVR 30 at 2.16 kp and melting point about 195 ° C. Elastomer.
NW: A non-woven fabric randomly deposited of staple fibers having a gravure weld area of 12% and calendered by the PS method.
G: Woven fabric.

  It can be seen that the sample "b" of the interlining material according to the invention has a primary separation force that is exactly the same as the interlining material without the additional fibrous layer, despite the covering of the adhesive coating with the additional fibrous layer. . Thus, the adhesion to the outer material is not impaired by the additional fiber layer despite the covering of the adhesive coating.

  Table 2 shows the results of the elasticity measurements on the interlining material consisting of various materials, with and without the additional fiber layer, to prove the transmission of the functional properties of the additional fiber layer to the outer material. .

  The following samples were made.

Sample 1b: 70% polyamide staple fiber 1.7 dtex / 30% polyester staple fiber 1.7 dtex, 25 g / m ² non-woven fabric using PS fixed and cp52 printing stencil (Druckschablone) by double dot method A polyamide adhesive coated at 9 g / m ² and with a 10 g / m ² polyurethane fiber layer additionally applied according to the invention (same as sample 1b in Table 1).

Sample 1a: 70% polyamide staple fiber 1.7 dtex / 30% polyester staple fiber 1.7 dtex, 25 g / m ² non-woven fabric, PS fixed and using cp52 printing stencil by double dot method, A polyamide adhesive coated with 9 g / m ² (same as sample 1a in Table 1).

Sample C: A plain weave, 24 g / m ² commercial bielastic fabric consisting of 100% polyester yarn dtex 33f18, coated with 9 g / m ² of polyamide double dot coating using cp52 printing stencil did.

Sample D: 100% polyamide staple fiber 1.7 dtex, 35 g / m ² commercial non-woven fabric, PS fixed and coated with 10 g / m ² polyamide adhesive using cp52 printing stencil by double dot method .

  The above-described test was performed using the Zwick test apparatus, with the following symbols MI and MII. The measurement results are shown in Table 2.

  Measurement MI: The material was stretched laterally at about 3 N / 5 cm, and the percent elongation was measured at about 3 N / 5 cm. The product was relaxed after this test and the test was repeated 10 times on the same sample. Listed in Table 2 are the measured values after 1, 5, and 10 measurements.

  After 10 measurements, it is determined whether the sample / product has stretched during this measurement cycle. Product elongation, or lack of return force, is described as a percentage change to the original length. In order to measure this value, a specific length before the start of measurement was recorded in the sample.

  Measurement MII: The material was stretched about 20% in the transverse direction, and the force required to stretch about 20% was measured. After this test, the product was relaxed and the test was repeated 10 more times on the same sample. Listed in Table 2 are the measured values after 1, 5, and 10 measurements.

  After 10 measurements, it is determined whether the sample / product has been stretched during this measurement cycle. Product elongation, or lack of return force, is described as a percentage change to the original length. In order to measure this value, a specific length before the start of measurement was recorded in the sample.

  Table 2: Elasticity measurements on various samples

  The measurement MI shows that the standard interlining nonwoven fabric sample 1a can be repeatedly stretched and relaxed with a small force, but after the end of a series of measurements, it is significantly higher than the interlining material sample 1b of the present invention. Increased elongation was observed. This measurement shows that the interlining material 1b according to the invention (with an elastic additional fiber layer) has a significantly improved restoring capacity and thus a marked improvement over the sample 1a constructed as before. It shows that it has elastic properties. Since these two samples have similar structures except for the additional fiber layer in sample 1b, the above measurement results show that the good elastic properties of sample 1b according to the present invention are the elastic properties of the additional fiber layer. There is more certain evidence that This elastic property is transmitted to the outer surface by coupling with the outer surface. Commercially available bi-elastic fabric interlining samples C and D cannot be stretched significantly more significantly than the interlining material sample 1b according to the invention with this relatively small force, and therefore according to the invention It is disadvantageous compared to the interlining material.

  In measurement MII, the material was repeatedly loaded up to 20% elongation. The sample 1b of the interlining material according to the present invention shows a good restoring force with a low extension force in agreement with the above measurement result. Similarly, it can be concluded that the sample material of Sample 1b has only a small elongation after the measurement cycle has been performed, thereby recovering the material well. The standard nonwoven sample 1a can be stretched repeatedly, but the sample is stretched significantly and does not show recovery, i.e. the material is not elastic. This measurement also proves the effect according to the invention of the elastic additional fiber layer on the outer material.

  Sample D failed to fully meet the requirements and broke during the test. This product cannot stretch well and is not elastic. In the sample C of the commercially available bi-elastic woven interlining, the material stretches during the measurement, so that more and more force must be expended. At the same time, this test draws elasticity. Sample C, the prior art of a bi-woven textile interlining, is therefore not suitable for 20% reversible elongation.

  In summary, the following is confirmed. The results in Tables 1 and 2 markedly outperform the above conventional materials in terms of the good elongation and relaxation properties of the interlining material which can be considered that the interlining material according to the present invention is due to an additional fiber layer. It shows that. Furthermore, in the case of the interlining material according to the invention, it can be seen that the adhesion to the outer surface is not impaired by the covering of the adhesive layer with an additional elastic fiber layer.

An affixable fibrous planar formation according to the present invention is shown in schematic cross-section.

Claims (7)

  In particular, a fixable fibrous planar product that can be used as a fixable interlining material in the textile industry, comprising a support based on non-woven fabric, woven fabric, knitted fabric, fabric or the like, the support In which an adhesive coating is provided on at least one side of the substrate, wherein the adhesive coating is coated with at least one additional layer of fibers having a predetermined function. Planar formation.   The fixable fibrous planar article of claim 1, wherein the additional fiber layer comprises fibers with a fineness <1 dtex.   3. A securable fibrous planar formation according to claim 1 or 2, wherein the additional fiber layer comprises elastic fibers.   4. A securable fibrous planar product according to any one of claims 1 to 3, wherein the additional fiber layer comprises melt spun fibers.   Any one of claims 1-4, wherein the additional fiber layer comprises melt spun fibers that are at least partially meltable by the action of pressure and temperature to secure the fibrous planar formation. Item 8. A sticky fibrous planar product according to item.   6. The fixable fibrous planar product according to any one of claims 1 to 5, wherein the adhesive coating is applied only to a partial region of the support.   7. A securable fibrous planar product according to any one of claims 1 to 6, wherein the adhesive coating is a double dot coating.

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