JPH0653964B2 - Antistatic clothes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an antistatic garment suitable as a work garment for workers who work in an environment where a fire or an explosion is likely to occur or workers who handle electric parts. Regarding

[Background of the Invention]

Fabrics made of synthetic fibers are generally superior in strength and durability compared with fabrics made of natural fibers, generate less fiber dust, and dry quickly even when washed, and are therefore suitable for work clothes. . In particular, a fabric using filament yarn is suitable for work clothes for workers who work in a clean environment because it hardly generates fiber dust. However, the fabric made of synthetic fiber has a drawback that it is easily charged with static electricity, and if it is not provided with antistatic property, that is, antistatic property, sparks due to static electricity are easily generated and work in an environment where fire or explosion is likely to occur It is dangerous and cannot be used for work clothes such as workers and workers who handle electrical parts. Even a cloth made of natural fibers is charged with electricity in a low humidity atmosphere, and therefore, it may be necessary to impart antistatic property when used in the above-mentioned work clothes.

As a method of imparting antistatic property to a fabric made of synthetic fibers, a synthetic polymer is blended with a hydrophilic polymer or the like,
A method of using a modified fiber having a hydrophilic group introduced therein, a method of attaching a water-absorbing substance such as a hydrophilic polymer to a synthetic fiber or a cloth by post-processing, a conductive thread, for example, a thread formed of a conductive fiber such as a metal fiber or a carbon fiber, Alternatively, a yarn made of a compound yarn or a twisted yarn of this yarn and a yarn made of synthetic fiber or natural fiber, a mixed fiber, a composite fiber, a conductive fiber obtained by a chemical treatment such as a coating method or electroless plating, that is, a metal, Conductive metal compound, carbon black,
Threads made of conductive synthetic fibers mixed with conductive substances such as conductive metal or attached side-by-side or around the entire circumference, or yarns made of compound yarns or twisted yarns of these yarns and synthetic fibers or natural fibers, at appropriate intervals. There is a method of weaving or knitting with, a method of applying a conductive paint to the cloth, a method of attaching a conductive film, and a method of forming a coating film of metal or the like by vapor deposition or sputtering. Among these methods, in the method of 50% RH or higher, the modified fiber has a specific resistance of 10 ⁸ to 10 ⁹ Ω · cm in a high-humidity atmosphere, and a certain antistatic property is obtained. In a humidity atmosphere, the specific resistance becomes high and the antistatic effect cannot be obtained. Like the method of, the method of does not have an antistatic effect in a low humidity atmosphere.
There is also a problem that the antistatic system is likely to decrease due to repeated washing and the like. In this method, conductive fibers or conductive fibers are more expensive than synthetic fibers and lack in flexibility. Therefore, when conductive yarns are used at a high density, not only the cost of the fabric increases but also the texture becomes hard. If you wear it as clothes, it will not feel comfortable to wear. And, even though the fabric using the conductive yarn in a low density is improved in cost and wearing feeling, it is considered that the work garment that requires a high degree of electrostatic performance as described above has insufficient antistatic property. Become so. In order to form clothes, cut fabrics must be joined by sewing with a sewing machine or the like. At that time, it is difficult to join so as to connect conductive threads, which also promotes the above-mentioned problems. . In this method, providing a coating of metal or the like has poor durability against washing and the like, and the conductive paint or film has a hard texture, which makes it difficult to work on clothes and wear it. Behavior becomes poor at the time, breathability becomes poor, and clothes become liable to get loose. When using a film, there is a further problem that the film is easily peeled off.

The present inventors have the problems as described above when the same cloth is used for each part of the garment in order to obtain the garment that does not cause sparks or other electrostatic disturbances.
It has been found that the above-mentioned problems can be solved when a garment is formed by appropriately using the cloth containing the conductive yarn of the method of 1) and the cloth provided with the conductive layer of the method of 1).

[Object of the Invention]

The present invention has been made based on the above background, and an object thereof is to provide an antistatic garment which is excellent in antistatic property, durability, and wearability and which can be obtained at a relatively low cost.

[Structure of Invention]

INDUSTRIAL APPLICABILITY The present invention mainly uses a fabric in which conductive yarns are woven or knitted at appropriate intervals, and is formed by partially using a fabric in which a conductive layer is provided on at least one surface of a woven or knitted fabric. The antistatic garment is characterized in that the conductive layer and the conductive layer are in contact with each other.
Comparison of fabrics with conductive yarns by using fabrics with conductive layers for the part that effectively works on the antistatic property of clothes, the part that does not affect the wearability, and the part that does not cause fatigue of the conductive layer. The density of the conductive yarn can be obtained at a relatively low cost and the wearability is not deteriorated, and the above-mentioned object can be achieved.

As the conductive yarn of the cloth containing the conductive yarn, the conductive yarn as described above, which has an electric resistance in the length of 1 cm, that is, a specific resistance of 10 ⁹ Ω · cm or less in a dry state is preferably used. To be And the weaving and knitting of conductive yarn into the fabric is
The stripe shape may be either warp or weft, or may be the grid shape of both warp and weft. From the aspect of antistatic property, it is preferable that the density of the conductive yarns be as high as possible within the range where the wearability is not deteriorated. However, considering the cost, the conductive yarns having the preferable specific resistance as described above are used. When used, the range from 1 to 10 conductive threads to 1 to 10 cm width is appropriately used in the stripe shape, and even more coarse arrangement density can be used in the grid shape. it can. As the thread other than the conductive thread, a polyester or nylon filament thread or spun thread, a mixed spun thread of polyester or nylon staple and rayon staple or cotton, or any other filament thread or spun thread can be used. An antistatic polyester filament yarn or an antistatic nylon filament yarn composed of the modified fiber according to (4) is preferably used.

As the cloth provided with a conductive layer on at least one side of the woven or knitted cloth, the cloth obtained by the above-mentioned method is used. Among them, the two-pack type polyether polyol-modified polyurethane resin, melamine derivative, organic polyisocyanate and crosslinking catalyst are used. A cloth obtained by applying a conductive coating material in which a conductive material is dispersed in a resin composition to a woven or knitted material, and heating and drying the conductive coating material to solidify the conductive coating material. A conductive film obtained by laminating a conductive coating obtained by laminating a conductive film obtained by adding a conductive substance to a one-component moisture-permeable polyurethane resin, which is a cloth obtained by laminating the conductive film to a woven or knitted fabric. A cloth obtained by laminating a woven or knitted fabric with the resin composition as an adhesive, which has an electric resistance much smaller than that of a cloth containing a conductive yarn, is preferably used. Fabric stomach, b, such as fabric plus conductive material to the adhesive in Ha, fabric conductive layer is provided in contact with the woven or knitted fabric directly is preferably used. In addition, it is preferable that the woven or knitted fabric on which the conductive layer is provided contains conductive yarn in terms of antistatic property.

The cloth provided with the conductive layer as described above connects the end portions such as cuffs, collars, upright portions, and hem of clothes, or the conductive threads of the cloth including the conductive thread described above with the conductive layer. It is used between fabrics containing conductive yarns. It is preferable to use the cloth provided with the conductive layer for the end portion in the cuff portion or the collar portion that directly contacts the body. In this case, in the case of a fabric in which the conductive layer is provided on only one side, it is preferable to fold it back so that the conductive layer is on the body side. Further, in the case of the cloth having the conductive layer provided on only one surface, the conductive layer side is overlapped with the cloth containing the conductive thread and connected to the cloth containing the conductive thread by sewing with a sewing machine or the like. In this respect, in the case of the cloth provided with the conductive layers on both sides, the conductive layers come into contact with the conductive threads without considering the front and back. Further, in the case of a cloth containing conductive threads in a stripe shape, the connection is made by overlapping both cloths in the direction in which the conductive threads intersect the connecting line so that as many conductive threads as possible are connected to the conductive layer. . Regarding this point as well, in the case of the cloth in which the conductive threads are arranged in a lattice, all the conductive threads are connected to the conductive layer without any particular consideration.

As described above, the garment made using the cloth containing the conductive thread and the cloth provided with the conductive layer has a conductive thread density of the cloth containing the conductive thread, which does not lower the wearability and does not increase the cost so much that the conductive The layer-provided fabric exhibits excellent antistatic property, and the conductive layer-provided fabric does not deteriorate the wearability or the durability and exhibits excellent performance.

〔Example〕

 Hereinafter, the present invention will be described with reference to illustrated examples.

1 and 2 each show an example of an upper garment. As the upper garment of FIG. 1, a cloth 1 having a conductive layer provided on both sides from the cuffs and the base of the arm is used, and the other parts are filled with a conductive thread. The cloth 2 is used, and the upper garment of FIG. 2 uses the cloth 1 in which the conductive layer is provided at the joints of the cuffs, the hem, the shoulders and the back, or the shoulders and the part below the chest, and the other parts. The cloth 2 containing conductive yarn is used. The cloth 2 containing conductive threads in FIG. 1 is a cloth in which conductive threads are arranged in a stripe shape, and in FIG. 2 the cloth 2 containing conductive threads is arranged in a lattice shape. In any of the outer garments, the connection between the cloth 1 and the cloth 2 is performed so that the conductive layer 1a surface of the cloth 1 and the cloth 2 are overlapped, as shown in the side view of FIG.

1-part moisture-permeable polyurethane; Crisbon 3314 (manufactured by Dainippon Ink & Chemicals, Inc.) 100 parts conductive carbon paste; Eltic EC8013 80 parts polyurethane mixed with polypropylene solution on a polypropylene coater using a solid coater. To 8 g / m ² and heat-dried at 100 ° C. for 2 minutes to form a conductive layer film. Separately, 20 parts of polyethylene glycol with an average molecular weight of 1500, average molecular weight
2000 parts of polybutylene adipate diol and 15 parts of tolylene diisocyanate were reacted in 173 parts of a mixed solvent of 105 parts of toluene and 68 parts of dimethylformamide to give a two-component polyether polyol-modified polyurethane resin solution having a resin concentration of 40%. To this solution, 10 parts of trimethylolmelamine (87% based on the two-pack type polyether polyol-modified polyurethane resin) were added, and further 15 parts of hexamethylene diisocyanate, 0.5 part of p-toluenesulfonic acid and 0.5 part of dibutyltin dilaurate were added. In addition, a two-pack type polyether polyol-modified polyurethane resin was obtained. Using this as an adhesive, the adhesive solid content is obtained on the conductive layer film obtained earlier.
It was coated at 18 g / m ² and dried for 30 seconds to obtain a conductive layer film with an adhesive layer. Polyethylene terephthalate filament yarn (75de / 72fil) for warp and weft
Water-repellent by the impregnation method using a 5% aqueous solution of a water repellent; Asahi Guard AG710 (manufactured by Meisei Chemical Co., Ltd.) after dyeing a plain woven fabric using a disperse dye (CI No. Despers Blue 139) by a conventional method. Navy blue water-repellent plain weave (warp density: 116 threads / 2.54c)
m, weft density 94 threads / 2.54 cm). This woven fabric and the adhesive layer of the conductive layer film with an adhesive layer are laminated, passed through a heating roll at 120 ° C. and pasted together, and then aged for 2 days, and then the polypropylene-coated release paper is peeled off to form a fabric having a conductive layer. Got This is referred to as cloth 1. On the other hand, through the polyester processed paper (75de / 72fil), used as the weft, the conductive fiber coated with conductive carbon on the nylon monofilament (22de) and the polyester processed yarn (75de / 72fil) are intertwisted (twist number 200T / m) is used as warp yarns at intervals of 8 mm to obtain a plain woven fabric, and this woven fabric is processed by an ordinary finishing method to obtain a cloth 2.

Then, the conductive yarns of the cloth 2 arranged in a stripe shape are in contact with the conductive layer 1a of the cloth 1 as shown in FIG.
Each conductive thread of B contacts with the surface side of the fabric 1 where the conductive layer 1a is not present. Connection B as shown in the side view of FIG. 4 and fabric 2 are striped as shown in the plan view of FIG. C when the positions of the conductive yarns are shifted from each other and connected to each other, C, when the fabric 2 is alone as shown in the plan view of FIG. 6, and when the fabric 1 of the fabric 1 is shown as shown in the plan view of FIG. When E is the case alone,
Surface leakage resistance according to JIS L1094 method between width 5 cm and length 5 cm and USA Federal T between width 3.5 inches and length 5 inches
The residual potential after 2 seconds was measured by the attenuation method of est Method Standard No. 101BMethod 4046, and the antistatic property was compared. In addition, regarding A to C, the connection portion having a superposition length of 5 mm was positioned at the center of the length. Of course, D and E have no connection part in the middle. The measurement results are shown in Table 1.

As shown in Table 1, in the case of A in which the conductive layer 1a of the cloth 1 and the cloth 2 are overlapped and connected, the antistatic property is remarkably improved. Such an effect of improving the antistatic property is not limited to the connection shown in FIG.
It can also be obtained by a connection as shown in the side view of the figure.

The upper garments of FIGS. 1 and 2 have excellent antistatic properties due to the above-mentioned effects of improving antistatic property and the effect that the cloth 1 is brought into direct contact with the body provided at the cuffs to cause electric discharge. Showing sex
Further, since the cloth 1 is partially used, the wearing feeling and durability are excellent.

The present invention is not limited to the illustrated example, and can be applied to pants and clothes that are integrated in the upper and lower parts. Further, the cloth provided with the conductive layer may be used only for the connecting portion shown in FIG.

〔The invention's effect〕

According to the present invention, clothes having excellent antistatic property, durability and wearability can be obtained at a relatively low cost.

[Brief description of drawings]

1 and 2 are respectively a rear view showing an example of the garment of the present invention, and FIG. 3 is a side view showing an example of the connection between the cloth containing conductive yarn and the cloth provided with a conductive layer in the garment of the present invention, FIG. FIG. 5 is a side view and a plan view showing a comparative example of connection, and FIGS. 6 and 7 are plan views of a sample for obtaining the antistatic property of the cloth containing conductive yarn and the cloth itself provided with a conductive layer.
FIG. 8 is a side view showing a connection example different from FIG. 1 ... Cloth with conductive layer, 1a ... Conductive layer, 2 ... Cloth with conductive thread.

Claims (3)

[Claims] 1. A cloth mainly obtained by weaving or knitting conductive yarns at appropriate intervals, and a cloth in which a conductive layer is provided on at least one surface of a woven or knitted fabric is partially used. An antistatic garment characterized in that the yarn and the conductive layer are superposed so that they are in contact with each other. 2. The antistatic garment according to claim 1, wherein the cloth having a conductive layer is used to connect the conductive yarns of the cloth containing the conductive yarn at different portions. 3. The antistatic garment according to claim 1, wherein a cloth having a conductive layer is used for an end portion of the garment.