Preparation process of waterproof wear-resistant polyester fiber fabric

Abstract

The invention belongs to the field of clothing, and discloses a preparation process of a waterproof and wear-resistant polyester fiber fabric, which is used for improving the waterproof and wear-resistant properties of the polyester fiber fabric, and the waterproof and wear-resistant polyester fiber fabric comprises a wear-resistant layer, a waterproof layer, a warm-keeping layer and a moisture-conducting layer from outside to inside, the wear-resistant layer is formed by weaving yarns of polyester fibers and yarns of polyimide fibers, the waterproof layer is formed by weaving yarns of polyester fibers and composite fibers of graphene, the warm-keeping layer is formed by weaving yarns of polyester fibers and yarns of cotton fibers, and the moisture guiding layer is formed by weaving yarns of cotton fibers and yarns of polyamide fibers. And compounding the wear-resistant layer, the waterproof layer, the warm-keeping layer and the moisture-conducting layer through an adhesive. The waterproof and wear-resistant polyester fiber fabric prepared by the invention has better wear resistance and waterproofness.

Description

Technical Field

[0001] The invention relates to the field of clothing, and in particular to a preparation process of a waterproof and wear-resistant polyester fiber fabric. Background Art

[0002] Polyester fiber, commonly known as "polyester", is a synthetic fiber made by chemical polycondensation of organic dibasic acid and diol. It is a kind of polymer compound. Its invention can be traced back to the 1930s, and it is now the most important type of synthetic fiber.

[0003] Polyester fiber has many advantages. First, it has excellent wrinkle resistance and shape retention. Clothes made from it are not easy to wrinkle during wearing and can maintain their original shape. Secondly, polyester fiber has high strength and elastic recovery ability, making the woven fabric strong and durable, and can quickly recover to its original shape. In addition, polyester fiber is also resistant to wear and tear and does not stick to hair, making the fabric look neater.

[0004] However, since the fabrics made of polyester fibers still have insufficient performance such as waterproof and wear resistance, there is an urgent need to develop a new preparation process for waterproof and wear-resistant polyester fiber fabrics. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the technical solution of the present invention is as follows:

[0006] In a first aspect, the present invention provides a preparation process of a waterproof and wear-resistant polyester fiber fabric, wherein the waterproof and wear-resistant polyester fiber fabric comprises, from the outside to the inside, a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer; the preparation process comprises:

[0007] (1) preparing a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer, wherein:

[0008] The wear-resistant layer is woven from polyester fiber yarn and polyimide fiber yarn, and the mass ratio of the polyester fiber yarn to the polyimide fiber yarn is 2-4:1-2;

[0009] The waterproof layer is woven from polyester fiber yarn and graphene composite fiber, and the mass ratio of the polyester fiber yarn to the graphene composite fiber is 3-6:0.5-1;

[0010] The thermal insulation layer is woven from polyester fiber yarn and cotton fiber yarn, and the mass ratio of the polyester fiber yarn to the cotton fiber yarn is 1-3:2-5;

[0011] The moisture conductive layer is woven from cotton fiber yarn and polyamide fiber yarn, and the mass ratio of the cotton fiber yarn to the polyamide fiber yarn is 1-2:2-4;

[0012] (2) Compounding the wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer by means of an adhesive; wherein the adhesive comprises polyamide and polypropylene; and comprising the following steps:

[0013] (2-1) mixing polyamide and polypropylene in a solvent, wherein the concentration of the polyamide is 10-15wt% and the concentration of the polypropylene is 8-15wt%, and then performing ultrasonic dispersion and mixing to obtain an adhesive;

[0014] (2-2) The wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer are bonded by an adhesive, and then laminated to obtain a waterproof and wear-resistant polyester fiber fabric, wherein the lamination temperature is 80-100°C.

[0015] Preferably, the polyester fiber and / or polyimide fiber in the wear-resistant layer has a special-shaped cross-section, and the special-shaped cross-section is hexagonal or pentagonal.

[0016] Preferably, the yarn count of the wear-resistant layer is 40s-70s.

[0017] Preferably, the wear-resistant layer is a twill fabric, and the sum of the warp yarn density and the weft yarn density is greater than 150 yarns / inch.

[0018] Preferably, the graphene composite fiber in the waterproof layer is a composite fiber of graphene and polyimide fiber.

[0019] Preferably, the yarn count of the thermal insulation layer is 40s-60s.

[0020] Preferably, the yarns of the cotton fibers and the yarns of the polyamide fibers of the moisture conducting layer have special-shaped cross-sections, and the special-shaped cross-sections are W-shaped or Y-shaped.

[0021] Preferably, the yarn count of the moisture conducting layer is 30s-50s.

[0022] Preferably, in step (2-1), the solvent includes dichloromethane or dimethylformamide.

[0023] In a second aspect, the present invention provides a waterproof and wear-resistant polyester fiber fabric, which is prepared by the preparation process of the waterproof and wear-resistant polyester fiber fabric described above.

[0024] In a third aspect, the present invention provides a preparation process of the above-mentioned waterproof and wear-resistant polyester fiber fabric and application of the waterproof and wear-resistant polyester fiber fabric in the preparation of clothing fabrics.

[0025] The beneficial effects of the present invention include at least:

[0026] The preparation process of the waterproof and wear-resistant polyester fiber fabric of the present invention adopts reasonable fiber matching and pressing processes, so that the waterproof and wear-resistant polyester fiber fabric has excellent waterproofness, wear resistance, moisture conductivity and the like.

[0027] In a preferred embodiment, the cross-section of the polyester fiber and / or polyimide fiber in the wear-resistant layer of the waterproof and wear-resistant polyester fiber fabric of the present invention is a hexagonal or pentagonal special-shaped cross-section, and the special cross-section can further improve the wear resistance of the waterproof and wear-resistant polyester fiber fabric.

[0028] In a preferred embodiment, the cross-section of the cotton fiber yarn and the polyamide fiber yarn of the moisture-conducting layer of the waterproof and wear-resistant polyester fiber fabric of the present invention is a W-shaped or Y-shaped special-shaped cross-section, and the special-shaped cross-section can further improve the moisture-conducting performance and waterproof performance of the waterproof and wear-resistant polyester fiber fabric.

[0029] Other features and advantages of the present invention will be described in detail in the following detailed description. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and beneficial effects of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described in the following embodiments of the present invention are only exemplary descriptions of the specific embodiments of the present invention, and are intended to be used to explain the present invention, but do not constitute a limitation of the present invention.

[0031] The endpoints of the scope disclosed in the present invention and any value are not limited to this accurate scope or value, and these scopes or values ​​should be understood as comprising values ​​close to these scopes or values. For numerical range, between the endpoint values ​​of each scope, between the endpoint values ​​of each scope and a separate point value, and between separate point values, can be combined with each other to obtain one or more new numerical ranges, and these numerical ranges should be considered as specifically disclosed in this article. In the description of the application, unless otherwise stated, the meaning of similar words such as "multiple / multiple" is two / kinds or more than two / kinds. In addition, the terms "include", "comprise" and any distortion thereof are intended to cover non-exclusive inclusions.

[0032] Example 1

[0033] A preparation process of a waterproof and wear-resistant polyester fiber fabric, wherein the waterproof and wear-resistant polyester fiber fabric comprises a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer from the outside to the inside; the preparation process comprises:

[0034] (1) preparing a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer, wherein:

[0035] The wear-resistant layer is woven from polyester fiber yarn and polyimide fiber yarn, and the mass ratio of the polyester fiber yarn to the polyimide fiber yarn is 2:1; the polyester fiber and / or polyimide fiber in the wear-resistant layer has a special-shaped cross-section, and the special-shaped cross-section is pentagonal; the yarn count of the wear-resistant layer is 50s; the wear-resistant layer is a twill fabric, and the sum of the warp yarn density and the weft yarn density is 180 yarns / inch;

[0036] The waterproof layer is woven from polyester fiber yarn and graphene composite fiber, the mass ratio of the polyester fiber yarn to the graphene composite fiber is 3:1; the graphene composite fiber is a composite fiber of graphene and polyimide fiber;

[0037] The thermal insulation layer is woven by polyester fiber yarn and cotton fiber yarn, and the mass ratio of the polyester fiber yarn to the cotton fiber yarn is 3:5; the yarn count of the thermal insulation layer is 40s.

[0038] The moisture conducting layer is woven with yarns of cotton fibers and yarns of polyamide fibers, and the mass ratio of the yarns of cotton fibers to the yarns of polyamide fibers is 1:4; the yarns of cotton fibers and polyamide fibers of the moisture conducting layer are of special-shaped cross-sections, and the special-shaped cross-sections are W-shaped; the yarn count of the moisture conducting layer is 40s;

[0039] (2) Compounding the wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer by means of an adhesive; wherein the adhesive comprises polyamide and polypropylene; and comprising the following steps:

[0040] (2-1) mixing polyamide and polypropylene in a solvent, wherein the concentration of the polyamide is 15 wt % and the concentration of the polypropylene is 10 wt %, and then performing ultrasonic dispersion and mixing to obtain an adhesive;

[0041] (2-2) The wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer are bonded by an adhesive, and then laminated to obtain a waterproof and wear-resistant polyester fiber fabric, wherein the lamination temperature is 90° C.

[0042] Example 2

[0043] A preparation process of a waterproof and wear-resistant polyester fiber fabric, wherein the waterproof and wear-resistant polyester fiber fabric comprises a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer from the outside to the inside; the preparation process comprises:

[0044] (1) preparing a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer, wherein:

[0045] The wear-resistant layer is woven from polyester fiber yarn and polyimide fiber yarn, and the mass ratio of the polyester fiber yarn to the polyimide fiber yarn is 2:1; the polyester fiber and / or polyimide fiber in the wear-resistant layer has a special-shaped cross-section, and the special-shaped cross-section is pentagonal; the yarn count of the wear-resistant layer is 50s; the wear-resistant layer is a twill fabric, and the sum of the warp yarn density and the weft yarn density is 180 yarns / inch;

[0046] The waterproof layer is woven from polyester fiber yarn and graphene composite fiber, the mass ratio of the polyester fiber yarn to the graphene composite fiber is 3:1; the graphene composite fiber is a composite fiber of graphene and polyimide fiber;

[0047] The thermal insulation layer is woven by polyester fiber yarn and cotton fiber yarn, and the mass ratio of the polyester fiber yarn to the cotton fiber yarn is 3:5; the yarn count of the thermal insulation layer is 40s.

[0048] The moisture conducting layer is woven with yarns of cotton fibers and yarns of polyamide fibers, and the mass ratio of the yarns of cotton fibers to the yarns of polyamide fibers is 1:4; the yarns of cotton fibers and polyamide fibers of the moisture conducting layer are of special-shaped cross-sections, and the special-shaped cross-sections are W-shaped; the yarn count of the moisture conducting layer is 40s;

[0049] (2) Compounding the wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer by means of an adhesive; wherein the adhesive comprises polyamide and polypropylene; and comprising the following steps:

[0050] (2-1) mixing polyamide and polypropylene in a solvent, wherein the concentration of the polyamide is 15 wt % and the concentration of the polypropylene is 10 wt %, and then performing ultrasonic dispersion and mixing to obtain an adhesive;

[0051] (2-2) The wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer are bonded by an adhesive, and then laminated to obtain a waterproof and wear-resistant polyester fiber fabric, wherein the lamination temperature is 100° C.

[0052] Example 3

[0053] A preparation process of a waterproof and wear-resistant polyester fiber fabric, wherein the waterproof and wear-resistant polyester fiber fabric comprises a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer from the outside to the inside; the preparation process comprises:

[0054] (1) preparing a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer, wherein:

[0055] The wear-resistant layer is woven from polyester fiber yarn and polyimide fiber yarn, and the mass ratio of the polyester fiber yarn to the polyimide fiber yarn is 2:1; the polyester fiber and / or polyimide fiber in the wear-resistant layer has a special-shaped cross-section, and the special-shaped cross-section is pentagonal; the yarn count of the wear-resistant layer is 40s; the wear-resistant layer is a twill fabric, and the sum of the warp yarn density and the weft yarn density is 180 yarns / inch;

[0056] The waterproof layer is woven from polyester fiber yarn and graphene composite fiber, the mass ratio of the polyester fiber yarn to the graphene composite fiber is 3:1; the graphene composite fiber is a composite fiber of graphene and polyimide fiber;

[0057] The thermal insulation layer is woven by polyester fiber yarn and cotton fiber yarn, and the mass ratio of the polyester fiber yarn to the cotton fiber yarn is 3:5; the yarn count of the thermal insulation layer is 40s.

[0058] The moisture conducting layer is woven with yarns of cotton fibers and yarns of polyamide fibers, and the mass ratio of the yarns of cotton fibers to the yarns of polyamide fibers is 1:4; the yarns of cotton fibers and polyamide fibers of the moisture conducting layer are of special-shaped cross-sections, and the special-shaped cross-sections are W-shaped; the yarn count of the moisture conducting layer is 40s;

[0059] (2) Compounding the wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer by means of an adhesive; wherein the adhesive comprises polyamide and polypropylene; and comprising the following steps:

[0060] (2-1) mixing polyamide and polypropylene in a solvent, wherein the concentration of the polyamide is 15 wt % and the concentration of the polypropylene is 10 wt %, and then performing ultrasonic dispersion and mixing to obtain an adhesive;

[0061] (2-2) The wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer are bonded by an adhesive, and then laminated to obtain a waterproof and wear-resistant polyester fiber fabric, wherein the lamination temperature is 90° C.

[0062] Example 4

[0063] A preparation process of a waterproof and wear-resistant polyester fiber fabric, wherein the waterproof and wear-resistant polyester fiber fabric comprises a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer from the outside to the inside; the preparation process comprises:

[0064] (1) preparing a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer, wherein:

[0065] The wear-resistant layer is woven from polyester fiber yarn and polyimide fiber yarn, and the mass ratio of the polyester fiber yarn to the polyimide fiber yarn is 2:1; the polyester fiber and / or polyimide fiber in the wear-resistant layer has a special-shaped cross-section, and the special-shaped cross-section is pentagonal; the yarn count of the wear-resistant layer is 60s; the wear-resistant layer is a twill fabric, and the sum of the warp yarn density and the weft yarn density is 180 yarns / inch;

[0066] The waterproof layer is woven from polyester fiber yarn and graphene composite fiber, the mass ratio of the polyester fiber yarn to the graphene composite fiber is 3:1; the graphene composite fiber is a composite fiber of graphene and polyimide fiber;

[0067] The thermal insulation layer is woven by polyester fiber yarn and cotton fiber yarn, and the mass ratio of the polyester fiber yarn to the cotton fiber yarn is 3:5; the yarn count of the thermal insulation layer is 40s.

[0068] The moisture conducting layer is woven with yarns of cotton fibers and yarns of polyamide fibers, and the mass ratio of the yarns of cotton fibers to the yarns of polyamide fibers is 1:4; the yarns of cotton fibers and polyamide fibers of the moisture conducting layer are of special-shaped cross-sections, and the special-shaped cross-sections are W-shaped; the yarn count of the moisture conducting layer is 40s;

[0069] (2) Compounding the wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer by means of an adhesive; wherein the adhesive comprises polyamide and polypropylene; and comprising the following steps:

[0070] (2-1) mixing polyamide and polypropylene in a solvent, wherein the concentration of the polyamide is 15 wt % and the concentration of the polypropylene is 10 wt %, and then performing ultrasonic dispersion and mixing to obtain an adhesive;

[0071] (2-2) The wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer are bonded by an adhesive, and then laminated to obtain a waterproof and wear-resistant polyester fiber fabric, wherein the lamination temperature is 100° C.

[0072] Example 5

[0073] A preparation process of a waterproof and wear-resistant polyester fiber fabric, wherein the waterproof and wear-resistant polyester fiber fabric comprises a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer from the outside to the inside; the preparation process comprises:

[0074] (1) preparing a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer, wherein:

[0075] The wear-resistant layer is woven from polyester fiber yarn and polyimide fiber yarn, and the mass ratio of the polyester fiber yarn to the polyimide fiber yarn is 2:1; the polyester fiber and / or polyimide fiber in the wear-resistant layer has a special-shaped cross-section, and the special-shaped cross-section is pentagonal; the yarn count of the wear-resistant layer is 50s; the wear-resistant layer is a twill fabric, and the sum of the warp yarn density and the weft yarn density is 180 yarns / inch;

[0076] The waterproof layer is woven from polyester fiber yarn and graphene composite fiber, the mass ratio of the polyester fiber yarn to the graphene composite fiber is 3:1; the graphene composite fiber is a composite fiber of graphene and polyimide fiber;

[0077] The thermal insulation layer is woven by polyester fiber yarn and cotton fiber yarn, and the mass ratio of the polyester fiber yarn to the cotton fiber yarn is 3:5; the yarn count of the thermal insulation layer is 40s.

[0078] The moisture conducting layer is woven with yarns of cotton fibers and yarns of polyamide fibers, and the mass ratio of the yarns of cotton fibers to the yarns of polyamide fibers is 1:4; the yarns of cotton fibers and polyamide fibers of the moisture conducting layer are of special-shaped cross-sections, and the special-shaped cross-sections are Y-shaped; the yarn count of the moisture conducting layer is 40s;

[0079] (2) Compounding the wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer by means of an adhesive; wherein the adhesive comprises polyamide and polypropylene; and comprising the following steps:

[0080] (2-1) mixing polyamide and polypropylene in a solvent, wherein the concentration of the polyamide is 15 wt % and the concentration of the polypropylene is 10 wt %, and then performing ultrasonic dispersion and mixing to obtain an adhesive;

[0081] (2-2) The wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer are bonded by an adhesive, and then laminated to obtain a waterproof and wear-resistant polyester fiber fabric, wherein the lamination temperature is 90° C.

[0082] Example 6

[0083] The cross-sections of the polyester fibers and polyimide fibers in the wear-resistant layer are circular, and other preparation processes are the same as those in Example 1.

[0084] Example 7

[0085] The cross-sections of the cotton fiber yarn and the polyamide fiber yarn of the moisture-conducting layer are circular, and the other preparation processes are the same as those in Example 1.

[0086] Comparative Example 1

[0087] The wear-resistant layer does not include the yarn of polyimide fiber, and other preparation processes are the same as those in Example 1.

[0088] Comparative Example 2

[0089] The waterproof layer does not include the composite fiber of graphene, and other preparation processes are the same as those in Example 1.

[0090] Test Case

[0091] The fabrics prepared in Examples 1-5 and Comparative Examples 1-2 were used to prepare samples, and their wear resistance and water permeability resistance were tested respectively and the test results were recorded:

[0092] The wear resistance test refers to GB / T21196 to judge the damage of the fabric; the water resistance uses hydrostatic pressure as an indicator, and the reference standard is GB / T24218.

[0093]

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and do not constitute a limitation on the content of the present invention. Although the present invention has been listed in detail through the above embodiments, those skilled in the art can still make various changes in form and details according to the technical contents described in the summary of the invention and the embodiment part, without departing from the spirit and scope of the present invention defined by the attached claims.

Claims

1. A process for preparing a waterproof and wear-resistant polyester fiber fabric, characterized in that: The waterproof and wear-resistant polyester fiber fabric comprises a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer from the outside to the inside; the preparation process comprises: (1) preparing a wear-resistant layer, a waterproof layer, a thermal insulation layer and a moisture-conducting layer, wherein: The wear-resistant layer is woven from polyester fiber yarn and polyimide fiber yarn, and the mass ratio of the polyester fiber yarn to the polyimide fiber yarn is 2-4:1-2; The waterproof layer is woven from polyester fiber yarn and graphene composite fiber, and the mass ratio of the polyester fiber yarn to the graphene composite fiber is 3-6:0.5-1; The thermal insulation layer is woven from polyester fiber yarn and cotton fiber yarn, and the mass ratio of the polyester fiber yarn to the cotton fiber yarn is 1-3:2-5; The moisture conductive layer is woven from cotton fiber yarn and polyamide fiber yarn, and the mass ratio of the cotton fiber yarn to the polyamide fiber yarn is 1-2:2-4; (2) Compounding the wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer by means of an adhesive; wherein the adhesive comprises polyamide and polypropylene; and comprising the following steps: (2-1) mixing polyamide and polypropylene in a solvent, wherein the concentration of the polyamide is 10-15wt% and the concentration of the polypropylene is 8-15wt%, and then performing ultrasonic dispersion and mixing to obtain an adhesive; (2-2) The wear-resistant layer, the waterproof layer, the thermal insulation layer and the moisture-conducting layer are bonded by an adhesive, and then laminated to obtain a waterproof and wear-resistant polyester fiber fabric, wherein the lamination temperature is 80-100°C.

2. The preparation process of the waterproof and wear-resistant polyester fiber fabric according to claim 1, characterized in that: The polyester fibers and / or polyimide fibers in the wear-resistant layer have a special-shaped cross section, which is hexagonal or pentagonal.

3. The preparation process of the waterproof and wear-resistant polyester fiber fabric according to claim 2, characterized in that: The yarn count of the wear-resistant layer is 40s-70s.

4. The preparation process of the waterproof and wear-resistant polyester fiber fabric according to claim 1, characterized in that: The wear-resistant layer is a twill fabric, and the sum of the warp yarn density and the weft yarn density is greater than 150 yarns / inch.

5. The preparation process of the waterproof and wear-resistant polyester fiber fabric according to claim 1, characterized in that: The graphene composite fiber in the waterproof layer is a composite fiber of graphene and polyimide fiber.

6. The preparation process of the waterproof and wear-resistant polyester fiber fabric according to claim 1, characterized in that: The yarn count of the thermal insulation layer is 40s-60s.

7. The preparation process of the waterproof and wear-resistant polyester fiber fabric according to claim 1, characterized in that: The yarns of the cotton fibers and the yarns of the polyamide fibers of the moisture conducting layer have special-shaped cross sections, and the special-shaped cross sections are W-shaped or Y-shaped.

8. The process for preparing the waterproof and wear-resistant polyester fiber fabric according to claim 1, characterized in that: The yarn count of the moisture conducting layer is 30s-50s.

9. A waterproof and wear-resistant polyester fiber fabric, characterized in that: The waterproof and wear-resistant polyester fiber fabric is prepared by the preparation process of any one of claims 1 to 8.

10. A process for preparing the waterproof and wear-resistant polyester fiber fabric according to any one of claims 1 to 8 and use of the waterproof and wear-resistant polyester fiber fabric according to claim 9 in preparing clothing fabrics.

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