Electroconductive fabric and electroconductive clothing

Abstract

To provide antistatic woven fabric and antistatic garment, which are well-balanced in sweat absorbing property, quick drying property, good feeling of wearing, and wrinkle resistance.SOLUTION: An antistatic woven fabric 1 contains conductive yarns 2a, 3a and non-conductive yarns 2b, 3b and has the conductive yarns 2a, 3a arranged at intervals in warps and wefts. The conductive yarn 2a arranged in at least the warp is a core-sheath conjugate conductive yarn. The core section is a yarn containing polyester fibers and cellulose fibers, and the sheath section is the conductive yarn. A garment is one containing the antistatic woven fabric. It is preferable that the non-conductive yarn 2b of the warp is a mixed yarn of polyester fibers and cellulose fibers. The conductive yarn 3a and the non-conductive yarn 3b of the weft may contain polyester stretch fiber yarns.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an antistatic fabric and antistatic clothing suitable for work clothes, uniforms, etc.

Background Art

[0002] Conductive clothing has been used to prevent electrostatic dust collection in workplaces and clean rooms where electrostatic electricity is an obstacle to parts and chemicals. Conductive clothing has conductive yarns woven into the fabric for electrostatic countermeasures. For example, conductive yarns are woven in stripes or grids at regular intervals to neutralize static electricity by corona discharge to prevent electrostatic dust collection. In recent years, as a required characteristic of electrostatic management, the surface resistance value of conductive clothing has been regulated in IEC (International Electrotechnical Commission) 61340-5-1 and 5-2, and surface conductivity across the entire clothing is required. Patent Document 1 proposes a fabric using a yarn in which a conductive yarn double-covers a polyester filament yarn and a yarn in which a conductive yarn single-covers a polyester filament yarn. Patent Document 2 proposes a uniform fabric using a double-covered yarn in which a polyethylene terephthalate yarn is arranged as the core and a polybutylene terephthalate conductive yarn is arranged as the sheath.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, conventional antistatic fabrics have problems in any of absorbency, quick-drying property, comfort, and wrinkle resistance, and improvement has been demanded.

[0005] In order to solve the above problems, the present invention provides an antistatic fabric and antistatic clothing with a balanced combination of sweat absorption, quick drying, comfort, and wrinkle resistance.

Means for Solving the Problems

[0006] The antistatic fabric of the present invention includes conductive yarns and non-conductive yarns, and is an antistatic fabric in which the conductive yarns are arranged at intervals in the warp and weft yarns. The conductive yarns arranged in the warp yarns are core-sheath composite conductive yarns, where the core part is a yarn containing polyester fibers and cotton fibers, and the sheath part is a conductive yarn. The non-conductive yarns of the warp yarns include blended yarns of polyester fibers and cotton fibers. The conductive yarns arranged in the weft yarns are core-sheath composite conductive yarns, where the core part is a polyester stretch fiber yarn, and the sheath part is a conductive yarn. The non-conductive yarns of the weft yarns are polyester stretch fiber yarns. The mixing ratio of each material is characterized by 70 - 85 wt% of polyester fiber, 13 - 25 wt% of cotton fiber, and 1 - 4 wt% of conductive yarn.

[0007] The clothing of the present invention is clothing including the above antistatic fabric.

Effects of the Invention

[0008] The present invention is an antistatic fabric including conductive yarns and non-conductive yarns, and the conductive yarns are arranged at intervals in the warp and weft yarns. At least the conductive yarns arranged in the warp are core-sheath composite conductive yarns, the core part is a yarn containing polyester fiber and cellulose fiber, and the sheath part is a conductive yarn, thereby providing an antistatic fabric and antistatic clothing with a balanced combination of sweat absorption, quick drying, comfort, and wrinkle resistance.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Modes for Carrying Out the Invention

[0010] The present invention is an antistatic fabric including conductive yarns and non-conductive yarns, with the conductive yarns arranged at intervals in the warp and weft yarns. Non-conductive yarns are arranged between the conductive yarns. At least the conductive yarns arranged in the warp are core-sheath composite conductive yarns, where the core part is a yarn containing polyester fibers and cellulose fibers, and the sheath part is a conductive yarn. The core part is preferably a blended yarn of polyester and cotton in particular. Since the sheath part is a conductive yarn, the antistatic effect is high. Examples of the conductive yarn used for the sheath part include "Kuracarb" manufactured by Kuraray Co., Ltd., "Beltron" manufactured by KB Seiren Co., Ltd., etc., and core-sheath type composite conductive yarns with the conductive component arranged on the surface side are preferred. As the non-conductive yarns, synthetic fibers or natural fibers can be used, that is, filament yarns or spun yarns such as polyester and nylon, and blended yarns of staple fibers such as polyester and nylon and rayon staple fibers, cotton fibers, etc.

[0011] The non-conductive yarns in the warp are preferably blended yarns of polyester fibers and cellulose fibers. Cellulose fibers have good sweat absorbency and comfort, and polyester fibers have good quick-drying property, comfort, and wrinkle resistance. Cotton is preferred as the cellulose fiber.

[0012] The conductive yarns arranged in the weft are preferably core-sheath composite conductive yarns, where the core part is a yarn containing polyester fibers and cellulose fibers, and the sheath part is a conductive yarn. Thereby, a fabric with a balanced antistatic property, sweat absorbency, quick-drying property, comfort, and wrinkle resistance is obtained.

[0013] The conductive yarns arranged in the weft are preferably core-sheath composite conductive yarns, where the core part is a polyester stretch fiber yarn, and the sheath part is a conductive yarn. Also, the non-conductive yarns in the weft are preferably polyester stretch fiber yarns. In the case of work pants, when stretch fiber yarns are arranged in the body length direction of the lower body, the bending operations of the knees and waist become easier. Also, in the case of work tops, when stretch fiber yarns are arranged in the body width direction, the working operations of the shoulders and upper arms become easier. Stretch fiber yarns include, for example, false-twisted yarns of polyethylene terephthalate multifilament yarns, polyester conjugate multifilament yarns, etc.

[0014] The antistatic fabric of the present invention preferably has an elasticity in the weft direction of 8% or more as measured by the JIS L1096 B method (constant load method). This facilitates the above-described work operations. Further, it is also preferable to perform existing water absorption processing. As for the mixing ratio of each material, as the ratio of polyester fiber, cotton, and the conductive yarn in the sheath part, 70 to 85 wt% of polyester fiber, 13 to 25 wt% of cotton, and 1 to 4 wt% of conductive yarn are preferably well-balanced.

[0015] The core-sheath composite conductive yarn is preferably at least one selected from single covering yarn and double covering yarn. Thereby, a conductive yarn with high strength is obtained.

[0016] The antistatic fabric of the present invention preferably has an electrical resistance value between two points measured according to the measurement specified in IEC (International Electrotechnical Commission) 61340-5-1 of less than 1×10 11 Ω, more preferably less than 1×10 10 Ω, and even more preferably less than 1×10 9 Ω. Thereby, a fabric with a high antistatic effect is obtained.

[0017] The antistatic clothing of the present invention includes the above-described antistatic fabric. Further, the clothing is preferably work clothing. The work clothing is suitable for upper garments such as shirts and jumpers, lower garments such as slacks and skirts, and connecting clothes.

[0018] The antistatic fabric of the present invention may have any fabric structure, but is preferably composed of a plain weave fabric. When it is a plain weave fabric, the shape retention property can be maintained well. For the warp and weft yarns constituting the plain weave fabric, it is preferable to arrange the conductive yarn at a ratio of about 1 conductive yarn to 5 to 30 non-conductive yarns. Thereby, antistatic properties can be exhibited. The mass (areal density) per unit area of the fabric is preferably 50 to 500 g / m 2 and more preferably 100 to 450 g / m 2 and particularly preferably 140 to 300 g / m 2

[0019] ​The breathable fabric of the present invention will be described with reference to the following drawings. In the following description of the drawings, the same reference numerals denote the same components. FIG. 1 is a schematic plan view of the antistatic fabric 1 according to an embodiment of the present invention. This antistatic fabric 1 is composed of warp threads including conductive threads 2a and non-conductive threads 2b, and one conductive thread 2a is arranged for every 19 non-conductive threads 2b. Similarly, the weft threads are composed of conductive threads 3a and non-conductive threads 3b, and one conductive thread 3a is arranged for every 15 non-conductive threads 3b. As an example, the conductive threads 2a and 3a use the threads described in FIGS. 2A and 2B below. The fabric texture is a plain weave texture. The non-conductive threads 2b and 3b are as follows by way of example. · Blended yarn containing polyester staple fiber and cellulose staple fiber · Worsted cross-twisted yarn containing polyester staple fiber and cellulose staple fiber · Worsted cross-twisted yarn containing polyester filament and cellulose staple fiber · Intermingled yarn containing polyester filament and cellulose filament · Polyester stretch fiber yarn (such as false-twisted multifilament yarn, etc.)

[0020] FIG. 2A is a schematic cross-sectional view of the single covering yarn 4 according to an embodiment of the present invention. One sheath Non-conductive yarn 6 is wound around the core Conductive yarn 5. The twist coefficient K of the sheath Conductive yarn 6 is preferably 500 to 600. FIG. 2B is a schematic cross-sectional view of the double covering yarn 7 according to an embodiment of the present invention. Two sheaths Non-conductive yarn 9 and 10 are wound around the core Conductive yarn 8 in the S direction and the Z direction. The primary twist coefficient K of the sheath Conductive yarn 9 1 is preferably 500 to 600, and Conductive yarn the secondary twist coefficient K of the sheath 2 10 is preferably 550 to 650. As an example, the core yarn and the sheath yarn are as follows. (1) Core yarn · Blended yarn containing polyester staple fiber and cellulose staple fiber · Worsted cross-twisted yarn containing polyester staple fiber and cellulose staple fiber ·Spun-twisted yarn containing polyester long fibers and cellulose short fibers ·Interlaced yarn containing polyester long fibers and cellulose long fibers ·Polyester stretch fiber yarn (such as false-twisted multifilament yarn) (2) Sheath yarn ·Conductive yarn made of multifilament yarn

Examples

[0021] The present invention will be described in more detail with reference to the following examples. It should be noted that the present invention is not limited to the following examples. Each evaluation in the examples is as follows. <Electrostatic conductivity> The electrical resistance value between two points defined in IEC (International Electrotechnical Commission) 61340-5-1 was measured. This measurement was requested from the Industrial Safety Technology Association, a public interest corporation, a third-party organization, and a report was received. <Other physical properties> Other physical properties were measured according to Japanese Industrial Standards (JIS) or measurements conducted in the industry.

[0022] Each material in the examples is as follows. In the following, unless otherwise specified, the polyester is polyethylene terephthalate (PET). <Conductive yarn> A1: A core-sheath composite conductive yarn in which the core is a blended yarn of 65% by mass of polyester short fibers and 35% by mass of cotton (cotton count 34), one strand, and the sheath is double-covered with two strands of "Kuracarb" (conductive filament yarn) manufactured by Kuraray Co., Ltd. A2: A core-sheath composite conductive yarn in which the core is a blended yarn of 65% by mass of polyester short fibers and 35% by mass of cotton (cotton count 16), one strand, and the sheath is double-covered with two strands of "Kuracarb" (conductive filament yarn) manufactured by Kuraray Co., Ltd. A3: A core-sheath composite conductive yarn in which the core is one strand of polyester multifilament false-twisted yarn of 165 decitex, and the sheath is double-covered with two strands of "Kuracarb" (conductive filament yarn) manufactured by Kuraray Co., Ltd. A4: A core-sheath composite conductive yarn in which the core is a polyester multifilament false-twisted yarn of 330 decitex and 2 strands, and the sheath double-covers 2 strands of "Kuracarb" (conductive filament yarn) manufactured by Kuraray Co., Ltd. A5: A core-sheath composite conductive yarn in which the core is a blended yarn of 65% by mass of polyester staple fiber and 35% by mass of cotton (cotton count 16) and 1 strand, and the sheath single-covers 2 strands of "Kuracarb" (conductive filament yarn) manufactured by Kuraray Co., Ltd. A6: A core-sheath composite conductive yarn in which the core is a blended yarn of 65% by mass of polyester staple fiber and 35% by mass of cotton (cotton count 16) and 1 strand, and the sheath single-covers 3 strands of "Kuracarb" (conductive filament yarn) manufactured by Kuraray Co., Ltd. <Non-conductive yarn 1: Non-stretch material> B1: A blended yarn of 65% by mass of recycled PET staple fiber and 35% by mass of cotton (cotton count 34), 1 strand B2: A blended yarn of 65% by mass of commercially available regular polyester staple fiber and 35% by mass of cotton (cotton count 34), 1 strand B3: A blended yarn of 65% by mass of recycled PET staple fiber and 35% by mass of cotton (cotton count 20), 1 strand B4: A blended yarn of 65% by mass of recycled PET staple fiber and 35% by mass of cotton (cotton count 16), 1 strand <Non-conductive yarn 2: Stretch material> C1: A polyester multifilament pin false-twisted yarn (semi-dull product) of 165 decitex, 1 strand C2: A polyester multifilament pin false-twisted yarn (semi-dull product) of 330 decitex, 1 strand C3: A polyester multifilament false-twisted woolly yarn of 165 decitex, 1 strand C4: A double yarn of 165 decitex of polyester multifilament false-twisted woolly yarn, 1 strand

[0023] (Example 1 , reference example ) · Warp: 21 strands of the yarn of B2 as the non-conductive yarn were continuously arranged, and 1 strand of the yarn of A1 as the conductive yarn was arranged therebetween. · Weft: 15 strands of the yarn of C4 as the non-conductive yarn were continuously arranged, and 1 strand of the yarn of A2 as the conductive yarn was arranged therebetween. ·Fabric texture: Plain weave The fabric was woven as described above. In Example 1, water absorption treatment was also performed.

[0024] (Examples 2 to 6 , Examples 2, 5 to 6 are reference examples ) Except as shown in Table 1, the procedure was the same as in Example 1. The yarn usage is also shown in Table 1 together with Example 1, the mixing ratio of each material is shown in Table 2, and the fabric evaluations are summarized in Table 3. For Examples 2 to 4, water absorption treatment was performed.

[0025]

Table 1

[0026]

Table 2

[0027]

Table 3

[0028] As is clear from Tables 1 to 3, the fabrics of the examples of the present invention had good antistatic properties and good dimensional stability after washing. Also, using the fabrics of the examples of the present invention, work clothes (outerwear) were sewn. These work clothes (outerwear) had a good balance of sweat absorption, quick drying, comfort, and wrinkle resistance, were machine washable, and had a good feeling of wear. Also, the fabrics of Examples 3 and 4 had good stretchability and were work clothes that allowed easy work movements.

Industrial Applicability

[0029] The breathable fabric of the present invention is suitable for work clothes, uniforms, etc., upper clothes, lower clothes, and connecting clothes.

Explanation of Reference Numerals

[0030] 1 Antistatic fabric 2a Warp conductive yarn 2b Warp non-conductive yarn 3a Weft conductive yarn 3b Weft non-conductive yarn 4 Single covering yarn 5,8 Non-conductive yarn 6,9,10 Conductive yarn 7 Double covering yarn

Claims

1. An antistatic fabric comprising conductive yarns and non-conductive yarns, wherein the conductive yarns are arranged at intervals in the warp and weft yarns, The conductive yarn arranged in the warp is a core-sheath composite conductive yarn, the core part is a yarn containing polyester fiber and cotton fiber, and the sheath part is a conductive yarn, The non-conductive yarn of the warp contains a blended yarn of polyester fiber and cellulose fiber, The conductive yarn arranged in the weft is a core-sheath composite conductive yarn, the core part is a polyester stretch fiber yarn, and the sheath part is a conductive yarn, The non-conductive yarn of the weft is a polyester stretch fiber yarn, The antistatic fabric has an elasticity of 8% or more in the weft direction as measured by the measurement specified in JIS L1096 B method (constant load method), An antistatic fabric, characterized in that the mixing ratio of each material is 70-85 wt% of polyester fiber, 13-25 wt% of cotton fiber, and 1-4 wt% of conductive yarn.

2. The antistatic fabric according to claim 1, wherein the non-conductive yarn of the warp is a blended yarn of polyester fiber and cellulose fiber.

3. The antistatic fabric according to claim 1 or 2, wherein the polyester stretch fiber yarn of the non-conductive yarn of the weft is a false-twisted yarn of polyethylene terephthalate multifilament yarn or a polyester conjugate multifilament yarn.

4. The antistatic fabric according to any one of claims 1 to 3, wherein the core-sheath composite conductive yarn is at least one selected from single covering yarn and double covering yarn.

5. The antistatic fabric has an electrical resistance value between two points measured according to the measurement specified in IEC (International Electrotechnical Commission) 61340-5-1 of less than 1×10 11 Ω, and is the antistatic fabric according to any one of claims 1 to 4.

6. An antistatic garment comprising the antistatic fabric according to any one of claims 1 to 5.

7. The antistatic garment according to claim 6, wherein the garment is workwear.

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