KR20100091189A - Heat-sealable sheet-like textile structure, production of the same and use - Google Patents

Abstract

The present invention discloses a heat-adhesive planar fabric structure having a carrier based on a woven fabric, optionally a knitted fabric, or a nonwoven fabric, and an adhesive bonding layer applied thereto in a grid form, wherein the adhesive adhesive layer is a polymeric material. And at least one silane. The adhesive bonding layer may be formed in the form of a paste spot, powder spot or double spot. In particular, when a heat-adhesive planar structure is used for a waterproof garment article, a high adhesion with high water tightness is obtained. The present invention also discloses a method for producing the sheet-like structure.

Description

Heat-adhesive flat fabric structure, manufacturing method and use thereof {HEAT-SEALABLE SHEET-LIKE TEXTILE STRUCTURE, PRODUCTION OF THE SAME AND USE}

The present invention relates to heat-adhesive flat fabric structures for the reinforcement of apparel articles, in particular hydrophobic finished apparel articles, methods of making them and in particular their useful uses.

Planar fabric structures are used, in particular, for the reinforcement of apparel articles such as coats or jackets. This type of planar structure or other inlay, known as the main patch inlay, is fixed to the inner side of the top material by an adhesive compound placed in a point-to-point manner on the planar structure by pressing and heating.

Planar structures of this kind use woven fabrics, knitted fabrics (with optionally entrained), and nonwovens as carrier materials, the materials used being in particular polyethylene, polypropylene, polyethylene terephthalate, polyamides, polyacrylonitrile, cellulose Or a yarn made of cotton or mixtures thereof. Depending on the needs of the user or the site of use, an inlay that is highly elastic or otherwise less elastic may be produced, and the processing yarn may also be a texture processing yarn.

The (melt) adhesive layer is then applied to one side of the carrier material and the adhesive layer is used to form a connection to the garment.

The chemical and physicochemical properties of the heat-adhesive adhesive layer are such that each condition on the melting range, melt viscosity, grain size and amount of adhesive applied per unit surface area maximizes the adhesion of the planar structure to the top material as possible. Select with. These conditions are substantially determined together by the planned use of the planar structure. Thus, for example, to create a planar structure, the laminate of the upper material thereof must withstand simple laundering at 40 ° C. without delamination; Other planar structures, especially for work clothes, may exhibit no bubbling or peeling after repeated washing at temperatures up to 95 ° C.

In addition, the shrinkage pattern between the planar structure and the top material bonded thereto should be uniform, especially in the ironing process, thereby avoiding an unsightly fabric appearance. In addition, conditions in the field of apparel include the durability of the fixed inlays and a refreshing and soft feel in the chemical cleaning process. Planar structures of this kind can also be used for applications other than external garments, such as for example special applications, for example other criteria such as sufficient heat resistance, low lamination temperature or varying purity are important for this purpose.

Requirements for sufficient adhesion between the planar structure and the outer garment material are generally met when choosing a suitable adhesive system. Typically, polyurethanes, copolyesters or copolyamides and polyacrylates are used as the adhesive compound material.

Although the adhesion between the planar structure and the top material has been extensively studied in recent decades, there is a need to obtain sufficient adhesion, especially if the top material is hydrophobic finish. In particular, in silicone treated top materials that have been finished or coated with crosslinkable silicone, it has been found to be defective in adhesion to the applied planar fabric woven fabric. Such highly siliconized top materials are used, for example, in the field of outdoor goods, in particular as raincoats. In order to ensure adhesion to the heat bondable planar fabric structure, this type of planar structure is often further sewn to the top material. If a hydrophobic finished garment is intended to be used as a raincoat, such as a raincoat or rainjacket, sewing has the disadvantage that the required watertightness is no longer guaranteed.

In view of the above, it is an object of the present invention, in particular, to provide a heat-adhesive planar fabric structure that exhibits sufficiently good adhesion to the siliconized top material, replacing expensive and disadvantageous sewing processes with modern, inexpensive bonding methods.

Surprisingly, the problem is a heat adhesive comprising a carrier based on a woven fabric, a knitted fabric (including optionally indentation), or a nonwoven fabric, and an adhesive layer applied thereto in grid form and comprising at least one silane in addition to the polymeric material. It has been found that this can be solved by planar fabric structures.

In particular in silicone treated garment materials, it has been found that excellent adhesion to the planar fabric structure according to the invention can be realized, in which case the adhesion is much higher than would normally be realized. For this reason, the sewing process may not be necessary together. Thus, in particular, a raincoat firmly fixed to a flat fabric structure can be obtained without deteriorating the watertightness by the previous conventional sewing procedure.

Accordingly, the present invention proposes a mixture of polymeric materials comprising at least one silane. The polymer material is a material conventionally used for adhesive compounds such as, for example, polyurethanes, copolyesters, copolyamides and polyacrylates. In the past, this kind of material has been commonly used for grid coating of inlay materials.

Epoxysilanes, aminosilanes and acrylosilanes or mixtures thereof are preferably used as the at least one silane used in admixture with the polymeric material. Particularly preferred examples of these silanes include aminosilanes, with aminosilanes comprising alkoxy functional groups according to the following formula being particularly preferred.

Where

R ₁ = alkyl radical containing _{1 to} 8 carbon atoms or alkyl radical comprising 2 to 8 carbon atoms and containing oxygen atoms in the chain

n = 0 or 1

R ₂ = H or an alkyl radical containing 1 to 8 carbon atoms

R ₃ = alkyl radical or aryl or cycloalkyl radical or arylalkyl radical of 1 to 8 carbon atoms

(여기서, R₅ = H 또는 1∼8개의 탄소 원자를 가지는 알킬 라디칼임)X =

Where R ₅ = H or an alkyl radical having 1 to 8 carbon atoms

_p = 0 or 1

R ₄ = alkyl radical of 1 to 8 carbon atoms

_q = 0 or 1, except that _q is 0 when _p is 0

N- (2-aminoethyl) -3-aminopropyltrimethoxysilane has been found to be a particularly effective aminosilane and is therefore particularly preferred according to the invention. From the epoxysilane group, 3-glycidyloxypropyltrimethoxysilane showed the outstanding adhesive effect.

According to a particularly preferred embodiment, what is known as a dry blending method can be used to mix the polymeric material and one or more silanes. The mixture consists of a powder made of polymeric material and a powder made of one or more silanes, which materials are dried at an appropriate mixing ratio and are usually mixed together at room temperature.

Alternatively, it is also possible to provide the adhesive layer material in the form of a paste. Materials consisting of powders made from polymeric materials and powders made from one or more of the silanes used for this purpose and in this case with water, preferably at room temperature, optionally further conventional flow aids, thickeners and optionally Mix together using additional conventional additives. These materials are stirred to form a paste and then applied in a conventional manner in the form of what are known as paste points.

Suitable mixing ratios between the at least one silane and the polymeric material range from 99.95 to 95.00 weight percent polymer material and from 0.05 to 5.00 weight percent total silane, preferably from 99.90 to 98.00 weight percent polymeric material and from 0.10 to 2.00 weight percent silane. Weight percent range. Especially preferably, the content of silane is 0.5 to 1.5% by weight. If higher amounts of silane are used to produce a mixture of polymeric material and silane, the adhesion is impaired. When the adhesive compound is applied in powder form, at least about 10% by weight of silane may limit the spillability of the resulting sparse powder.

The invention also relates to a method of making a heat bondable planar fabric structure. This method involves first producing a raw woven fabric, a raw knit fabric (including optionally indentation), or a nonwoven in a conventional manner. Usually, after this, the washing and / or shrinking process is carried out, followed by the dyeing process if necessary. Thus, after obtaining a raw woven fabric, a raw knitted fabric or a nonwoven fabric, an adhesive layer is applied to one side thereof, the adhesive layer comprising a mixture made of a polymeric material claimed in accordance with the invention and comprising at least one silane, usually in the form of a grid. It includes. The coating weight of the adhesive compound according to the invention is generally 8-15 g / m ² , preferably 9-13 g / m ² .

The adhesive layer can be applied to the carrier material by conventional paste point methods, powder point methods or other double point methods. Coating methods of this kind have been known for a long time in the art and can be used without limitation in accordance with the present invention. When applying the adhesive compound in the form of a double point, it is possible to use an adhesive compound made of a polymer material comprising silanes for the upper and lower points, respectively. However, for the lower point it is based on polyurethane, polyacrylates, copolyesters or copolyamides and therefore may not use mixtures comprising silanes. In this case, the upper point consists of the described mixture made of a polymeric material comprising at least one silane. This makes it possible to obtain particularly good adhesion to hydrophobic finished top materials, for example used for raincoats.

Particularly preferably used adhesive compounds are mixtures of the above-mentioned N- (2-aminoethyl) -3-aminopropyltrimethoxysilane and copolyamides. This mixture shows particularly good adhesion values, whether applied in the form of a double point coating or in the form of a powder point or a paste point.

The planar fabric structure described according to the invention is used for the reinforcement of apparel articles, in particular hydrophobic finished or siliconized apparel articles. In particular, when a planar structure is used at rain costs such as raincoats, rainjackets or trousers, good adhesion values are observed with high water tightness of the composites produced.

The invention will be described in more detail below with reference to specific examples.

Example 1

A polyester woven fabric made of textured yarn (slope dtex 35 f 24/1; weft dtex 100 f 72/1; specific weight of about 25 g / m ² ) was conventionally crosslinked silicone plasticizer (12 g / l, liquid 85% of the pickup (liquor pickup) was finished and heat fixed. In a double point coating system, the inlay material is imprinted in a manner known as polyurethane paste prepared with polyurethane dispersions, acrylate thickeners and flow aids, and copolyamide spray powder (Vestamelt X 1027 80-200 μm, de Obtained from the company). Excess sparged powder was removed by suction filtration. The coated material web was then passed through a drying oven where the printed polymer points were dried and sintered. At the end of the dryer tunnel, the material web was cooled with a chill roller and wound on a spool. The coating weight of the inlay was 9-11 g / m ² (Inlay 1).

Example 2

The same polyester woven fabric as in Example 1 was finished with a silicone plasticizer and heat set as disclosed herein. In a double point coating system, the copolyamide was imprinted on the inlay material as in Example 1 and uniformly added 1% aminosilane (N- (2-aminoethyl) -3-aminopropyltrimethoxysilane) Spraying powder was sprayed. After the excess spray powder was removed by suction filtration, drying, sintering, cooling and winding were carried out as in Example 1. The coating weight was 9-11 g / m ² (Inlay 2).

Example 3

Knitwear articles made of 100% polyamide (inclined dtex 17 f 5; weft dtex 22 f 14/2; specific weight about 18 g / m ² per area) were finished, heat-set as described in Example 1 And coated. The coating weight was 8-10 g / m ² (Inlay 3).

Example 4

A knitwear article disclosed in Example 3 and made of 100% polyamide was imprinted with a polyurethane paste as described in Example 2 and silane modified copolyamide (1% aminosilane, 99% copolyamide) Sprayed. Excess dusting powder of the article was removed by suction filtration, and the article was dried and sintered in a drying oven. After cooling on a chill roller, the coated article was wound up with a spool. The coating weight was 8-10 g / m ² (Inlay 4).

Example 5

A thermal adhesive nonwoven fabric (specific weight 22 g / m ² per area) made of 100% polyamide was coated and wound up as disclosed in Example 1. The coating weight was 10-12 g / m ² (Inlay 5).

Example 6

A heat-adhesive nonwoven fabric made of 100% polyamide (see Example 5) was imprinted with a polyurethane paste as disclosed in Example 2 and sparged with silane modified copolyamide spray powder, removed by suction filtration and sintered , Cooled, and wound up. The coating weight was 10-12 g / m ² (Inlay 6).

Example 7

A knitwear article as disclosed in Example 3 and made of 100% polyamide was imprinted with a polyurethane paste as disclosed in Example 2 and epoxy modified copolyamide spray powder (3-glycidyloxypropyltrimeth Methoxysilane), removed by suction filtration, sintered, cooled and wound up. The coating weight was 10-13 g / m ² . (Inlay 7)

Example 8

Knitwear articles as disclosed in Example 2 and made of 100% polyamide are pastes which also contain copolyamide powder having a grain size of 80-200 μm, in addition to conventional paste components such as flow aids and thickeners Printed, sparged, removed by suction filtration, sintered, cooled and wound up. The coating weight was 10-13 g / m ² (Inlay 8).

Example 9

The imprinted knitwear article as disclosed in Example 8 was sprayed with an aminosilane-modified spreading powder as in Examples 2, 3, 4, 5, 6, removed by suction filtration, sintered and cooled, Wound up. The coating weight was 10-13 g / m ² (Inlay 9).

Example 10

The knitwear article disclosed in Example 3 was finished as described in Example 1, heat fixed and point coated with copolyamide powder in a powder point system by an engraving roller (28 mesh). The coating weight was 12-15 g / m ² (Inlay 10).

Example 11

Knitwear articles prepared as disclosed in Example 10 were coated with aminosilane modified copolyamide powder (1% aminosilane, 99% copolyamide) as disclosed herein. The coating weight was 12-15 g / m ² (Inlay 11).

Example 12

The knitwear article disclosed in Example 3 was finished, heat set as described in Example 1, and imprinted with a paste containing about 30% copolyamide paste powder (0 to 80 μm). The article was dried in a conventional manner and the coating was sintered. The coating weight of the inlay was 9-11 g / m ² (Inlay 12).

Example 13

The knitwear article disclosed in Example 3 was finished, heat set as described in Example 1, and imprinted with a copolyamide paste homogeneously added with 0.5% aminosilane. The coating weight of the inlay was 7-9 g / m ² (Inlay 13).

Adhesion test

The test top material used for the adhesion test is a polyester woven fabric finished with three-dimensional crosslinkable silicone using the Foulard method. The inlay materials of Examples 1-13 were pressed with the top material at a bonding press of 127 ° C., pressure 1.5 bar and residence time 10 seconds, then cut into 5 cm wide strips. After 48 hours of storage in a standard environment (DIN 53 802-79), these specimens were tested for adhesion of the inlays on top material in accordance with DIN 54 310 with the aid of the adhesion test apparatus of Instrone (INSTRON 44443). . To this end, the upper material and the inlay were manually separated from each other by hand so that the upper material and the inlay were fixed to the clamping device of the separation test apparatus. The inlay and the top material were separated from each other at a fixed draw rate. This involves the measurement of the force required to separate the two joined planar structures. Record the average of five measurements.

exam

Double  Point coating

Powder point coating

Paste point coating

Claims (19)

A heat bondable planar fabric structure having a carrier based on a woven, knitted, wet insertion knitted or nonwoven fabric and an adhesive layer applied thereto in a grid form and comprising a polymeric material, the polymeric material contained within the adhesive layer. A heat bondable planar fabric structure characterized in that it comprises at least one silane. The thermally bonded planar fabric structure of claim 1, wherein the at least one silane is epoxysilane, aminosilane, acrylosilane, or mixtures thereof. The thermally bonded flat fabric structure according to claim 1 or 2, wherein the silane is epoxysilane or aminosilane. 4. The group of claim 1, wherein the silane is a group of 2-glycidyloxypropyltrimethoxysilane epoxysilane and N- (2-aminoethyl) -3-aminopropyltrimethoxy A heat bondable planar fabric structure characterized in that it is selected from the group of silane aminosilanes. The thermally bonded flat fabric structure according to any one of claims 1 to 4, wherein the one or more silane-containing polymer materials are present in a ratio of 0.05 to 5.00: 99.95 to 95.00 based on the weight ratio. 6. The thermally bonded flat fabric structure according to claim 5, wherein the at least one silane-containing polymer material is present at a ratio of 0.10 to 2.00: 99.90 to 98.00 based on the weight ratio. 7. The thermally bonded planar fabric structure according to claim 1, wherein the polymeric material comprises copolyamide, copolyester, polyacrylate or polyurethane. 8. 8. The thermally bonded flat fabric structure according to any one of claims 1 to 7, wherein the adhesive layer comprises a mixture of copolyamide and aminosilane. The thermally bonded flat fabric structure according to any one of claims 1 to 8, wherein the adhesive layer is in the form of a double point coating. 10. The method of claim 9, wherein the bottom point of the double point coating comprises polyurethane, polyacrylate, copolyester or copolyamide, wherein the top point of the double point coating is further added with polyurethane, copolyester or copolyamide. A thermally bonded planar fabric structure comprising at least one silane. (a) producing a raw woven fabric, optionally a raw knit or nonwoven fabric comprising a mouth;
(b) carrying out the washing and / or shrinking process;
(c) optionally, carrying out a dyeing process;
(d) thermally stabilizing the raw woven fabric, raw knitted fabric or nonwoven fabric;
(e) A method of producing a thermally bonded planar fabric structure as defined in any one of claims 1 to 10 by coating one side of the obtained raw woven fabric, raw knitted fabric or nonwoven fabric with an adhesive layer,
The material of the adhesive layer used is a polymer material with at least one silane. The method of claim 11, wherein the adhesive layer is applied to the carrier in the form of a double point. The method of claim 12, wherein the bottom point of the double point coating is applied based on polyurethane, polyacrylate, copolyester or copolyamide as a main component, and the top point is mainly based on a polymer material comprising at least one silane. It is applied by the manufacturing method characterized by the above-mentioned. 12. A method according to claim 11, wherein the adhesive layer is applied in the form of a paste point made of a polymeric material comprising at least one silane. 12. The method of claim 11 wherein the adhesive layer is applied in the form of a powder point made of a polymeric material comprising at least one silane. 16. A heat-adhesive planar fabric structure according to any one of claims 1 to 10 for reinforcement of apparel articles, or heat adhesiveness manufacturable by the method according to any one of claims 11 to 15. Use of planar fabric structures. 18. The use of claim 17, wherein the article of clothing is a hydrophobic finished garment. 18. Use according to claim 16 or 17, wherein the garment article is a silicone treated garment article. Use according to any one of claims 16 to 18, characterized in that the garment article is a raincoat.