JP2000073244A - Spiral plied yarn of improved self-discharge efficiency, and cord of the same yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spiral plied yarn of improved self-discharge efficiency and cord or the like of the same yarn, showing greatly improved antistatic effect in spite of lowered electroconductive fiber content than that of the conventional product to reduce raw material cost. SOLUTION: This spiral plied yarn 3 is composed of a piled yarn 1 as the core, made of an adequate number of first-twisted synthetic fibers (e.g. acrylic, polyester or nylon fibers), around which the so-called electroconductive fiber 2 (e.g. organic electroconductive fiber with an electroconductive material, e.g. stainless steel fiber, metal vapor deposited fiber, copper sulfide or carbon black, dispersed in, e.g. an acrylic, polyester or polyamide fiber) is spirally wound. The spiral plied yarn 3 can be used for a cord, braid or fabric of improved self-discharge capacity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a ply-twisted yarn obtained by twisting acrylic fibers, polyester fibers and the like as a core yarn, and a wrapping yarn around which organic conductive fibers or metallic fibers with enhanced self-discharge capability are wound. Spiral twisted yarns with improved self-discharge efficiency wound in a spiral shape are more inexpensive and have significantly improved discharge effect compared to conventional braids, twisted cords, ropes, etc., which only aim for conductivity. The present invention relates to the development of twisted yarns and cords.

[0002]

2. Description of the Related Art In general, static electricity is generated due to the friction between an object and an object, a part of the object is discharged spontaneously in the atmosphere or through a contacting object, and a part remains on the object and is charged. The voltage has been adversely affected on the human body. Static electricity can give an unpleasant shock especially when the air dries, for example, when touching a car door, office or hotel door knob, and various conductive fiber products have been developed to remove it. I have.

[0003] Conventional conductive fiber products include, for example, a conductive fiber monofilament containing conductive carbon black powder or the like in polyester or polyamide or a suitable number of twisted fibers mixed with other synthetic fibers. The main thing is ply twisted, the surface is smooth in terms of structure,
There are drawbacks such as a low contact rate with the charged body and, therefore, an extremely small static elimination effect. To enhance the effect, it is necessary to increase the amount of conductive fibers used to 40% or more.
Since the cost of the conductive fiber is extremely expensive compared to other fibers, the amount of the conductive fiber mixed is limited.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned drawbacks, and has reduced the cost of raw materials by using less conductive fibers than conventional products. Nevertheless, the present invention has been made in order to provide a ply-twisted yarn capable of significantly improving the self-discharge effect and a string using the same.

[0005]

According to the present invention, the above drawbacks have been successfully eliminated by improving the shape of the twisted yarn. That is, the spiral plied yarn is a core yarn obtained by laying a suitable number of generally recognized acrylic fibers, polyester fibers, polypropylene fibers, nylon fibers, and the like, and organic conductive fibers around the core, for example, acrylic,
A fiber-forming polymer such as polyester, polyamide or polyolefin mixed with a conductive metal compound such as conductive carbon black or copper sulfide to form a fibrous form, or a metal fiber such as stainless steel fiber or nickel fiber Is spirally wound up.

[0006] Compared with the conventional conductive fiber, the contact area with the charged body is remarkably enhanced and the conductive fiber itself can enhance the self-discharge efficiency. Keychains processed into tufts, or spiral plied yarns processed into necklaces, bracelets or anklets as twisted or braided yarns, and woven as warp or weft yarns of textiles have a large number of conductive surfaces. It is possible to provide a stranded, braided or woven fabric that has significantly enhanced self-discharge capability, such that fibers can be projected and a woven fabric having a large contact area with a charged body can be produced as compared with conventional products. it can.

The conductive fibers include organic conductive fibers prepared by mixing conductive carbon, copper sulfide, and the like with a synthetic resin polymer to form a fibrous material, and stainless steel fibers, nickel fibers, and copper fibers. It can be assumed that the metal is processed into a fibrous form, or that the metal is vacuum-deposited on the surface of synthetic fiber.However, the vacuum-deposited one has good initial conductivity, but its effectiveness gradually decreases, It is desirable to select appropriately according to the purpose of use.

[0008] Since the static elimination of the charged body is performed by contact between the charged body and the conductive fiber, the conventional product having a smooth surface has a small contact area with the charged body and causes a low static elimination effect. The spiral plied yarn of the present application is obtained by winding a suitable number of acryl fibers, polyester fibers, polypropylene fibers, nylon fibers, etc. into a core yarn, and winding conductive fibers around the core yarn in a spiral shape. Compared with the fiber, the contact area with the charged body could be remarkably enhanced, so that the self-discharge-type neutralization effect could be significantly enhanced.

A spiral ply twisted yarn having a loop-shaped surface and a cord using the same have an extremely large contact area with a charged body and have a shape which is liable to self-discharge itself. Since they act synergistically, the static elimination effect can be significantly improved at a lower cost than in the prior art.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a plied yarn 1 obtained by twisting a suitable number of synthetic fibers such as acrylic fiber, polyester fiber, nylon fiber or polypropylene fiber, or natural fiber such as silk is used as a core yarn. A conductive material such as copper sulfide, carbon black or stannic oxide is added to steel fiber, metal-deposited fiber or polymer raw material such as acrylic, polyester or polyamide, for example, carbon black 30% by weight, acrylic 70% by weight. And a so-called conductive fiber 2 formed into a fibrous shape is spirally wound into a spiral plied yarn 3.

The spiral plied yarn 3 produced in Example 1 can be used alone, for example, as a part of a tuft-like neutralizing key holder 4 as shown in FIG. 2, or as shown in FIG. 3 is incorporated as a whole or a part of the braid 5 as a plurality of braids to be processed into accessories such as a necklace, a bracelet or an anklet, and a woven fabric is produced as a warp and a weft of the fabric. At this time, it is needless to say that the spiral portion 6 appears on the surface.

The fiber raw materials used in the present invention are those shown in the above embodiments, which are merely examples, and it goes without saying that raw materials that match the intended use of the final product can be appropriately selected and used. As for the conductive fiber, it is needless to say that the raw material is appropriately selected in consideration of the raw material cost, the neutralization effect and the like.

[0014]

Since the present invention is configured as described above, it has the following effects.

The conventional yarn using a plied yarn having a smooth surface has a small static electricity removing effect because of a small contact area with a charged body. However, the plied yarn of the present invention is formed around a plied yarn whose conductive fiber is a core yarn. Since it is wound in a spiral shape, the contact area with the charged body is significantly increased and the static elimination effect can be remarkably enhanced.In addition, in the conventional twisted yarn, self-discharge is slightly increased on the surface of the yarn. Although only a part, the spiral plied yarn of the present invention can self-discharge a large amount from the curved surface of the spiral.

In the prior art, the static elimination effect can be enhanced by increasing the amount of conductive fibers used or by adding an expensive conductive material. The static elimination effect can be significantly enhanced at a cost.

The spiral plied yarn of the present invention is used as a braid,
When processing into ornaments such as necklaces, bracelets or anklets, in addition to the effects of conventional ornaments, it is possible to add a function to discharge static electricity generated in the human body to the atmosphere and wear them. By doing so, it is possible to prevent static electricity from being discharged to the body due to constant discharge, so that unpleasant electric shock when touching the door of a car or the door knob of a room, etc. can be prevented, or the skirt can be prevented from getting tangled. Can be prevented,
In addition, those applied to such as a bunch of static elimination key chains have many excellent features such that static electricity can be instantaneously removed by lightly touching this portion with a metal portion.

[Brief description of the drawings]

FIG. 1 is a perspective view of a spiral plied yarn.

FIG. 2 is a plan view of a tuft of a key ring for static elimination.

FIG. 3 is a partially enlarged view of a braid using a spiral plied yarn.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Twisted yarn 2 Conductive fiber 3 Spiral twisted yarn 4 Static elimination key holder 5 Braid 6 Spiral part

Claims (2)

[Claims] 1. An organic conductive material comprising a ply-twisted yarn obtained by twisting several synthetic fibers and natural fibers as a core yarn, and a conductive material such as a metal fiber, a metal-deposited fiber, copper sulfide or carbon black blended around the core yarn. Spiral twisted yarn with improved self-discharge efficiency, characterized by spirally winding fibers etc. as a wound yarn 2. A string having enhanced self-discharge efficiency, wherein the string is formed into a twisted string, a braid, a braid or a woven string using the spiral plied yarn according to claim 1.