JP2000064150A - Electromagnetic wave-shielding woven fabric for clothes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare an electromagnetic wave-shielding woven fabric for clothes having a required degree of electromagnetic wave-shielding function, and excellent in touch, surface feeling and fashion. SOLUTION: An electromagnetic wave-shielding yarn is obtained by twisting a combination of a conductive fiber prepared by plating silver on nylon filament and a synthetic fiber or a natural fiber on a spinning stage or a twisting stage. By using the electromagnetic wave-shielding yarn, a structural composition of double weaving or multi weaving is obtained, wherein the electromagnetic wave-shielding yarn is placed on the reverse side or in the middle layer of the structural composition of double weaving or multi weaving.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is woven with a double woven or multiple woven structure used for heavy clothing such as men's suits, slacks, women's suits, pants, skirts, school uniforms, office uniforms, and shirts. The present invention relates to an electromagnetic shield fabric for clothing.

[0002]

2. Description of the Related Art For example, an electromagnetic wave generated from a mobile phone may cause a modulation of a medical device such as a cardiac pacemaker in a human body, which needs to be shielded. Become. Also, CR of OA equipment
It has become a problem that electromagnetic waves emitted from the T screen have an adverse effect on the human body. In this regard, electromagnetic wave shield materials have been proposed.

[0003]

The conventional electromagnetic wave shielding material is a material which is finished as a woven fabric and coated with a metal on one or both sides. The electromagnetic wave shielding effect is good, but the texture, the surface feel, and the fashion are good. There was a problem in terms of durability and durability. In addition, conventionally, there was one in which some of the fibers that make up the fabric were plated with metal,
There was a problem with durability. In particular, the conditions for the electromagnetic wave shielding material for clothing are that, in addition to the electromagnetic wave shielding effect, the texture, surface feel, and fashionability of the fabric are required, and thus the conventional materials have the following problems. It was That is, although the conventional electromagnetic wave shield material was excellent in the electromagnetic wave shield effect, it had a problem that it was inferior in texture, surface feel and fashionability and could not be used as a material for clothing. Further, in the case of coating processing, there is a problem that the wearing comfort (hygroscopicity, moisture release, elongation, etc.) is lacking.

The present invention has been proposed in view of the conventional problems described above, and an object thereof is to provide an electromagnetic wave shield for clothing which has a necessary electromagnetic wave shielding effect and is excellent in texture, surface feel and fashionability. It is to provide a woven fabric.

[0005]

In order to achieve the above object, the present invention provides a conductive fiber obtained by silver-plating a nylon filament alone, or a combination of the conductive fiber and a synthetic fiber or a natural fiber, or Using an electromagnetic wave shield yarn obtained by twisting a combination of the conductive fiber, synthetic fiber and natural fiber in a spinning stage or a twisting stage, weaving with a double weave or multi-woven structure, and the electromagnetic wave shield yarn It is arranged on the back surface side or the intermediate layer of the double-woven or multi-woven structural structure. The electromagnetic wave shield yarns are arranged in a mesh shape in the warp direction and the weft direction.

Since the woven fabric of the present invention has the above-mentioned constitution, it is possible to provide an electromagnetic shielding fabric for clothes which is excellent in texture, surface feel and fashionability while having a necessary electromagnetic shielding effect as a material for heavy clothing. it can.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The electromagnetic wave shielding fabric for clothing of the present invention is a conductive fiber obtained by silver-plating a nylon filament, or a conductive fiber and a synthetic fiber (polyester, nylon, etc.) or a natural fiber (wool). , Cotton, etc.), or a combination of the conductive fiber, synthetic fiber, and natural fiber, which are twisted at the spinning stage or twisting stage, are used as a part of the warp and weft yarns, It is woven with a woven or multi-woven structural design, and the electromagnetic wave shielding yarn is arranged on the back side or the intermediate layer of the double-woven or multi-woven structural design.

1 (A) and 1 (B) are structural diagrams of a woven fabric according to an embodiment of the present invention. FIG. 1 (A) is a diagram showing ups and downs of wefts as seen from the back side of the woven fabric, and (B). [Fig. 4] is a diagram showing how to pass warp threads through the heddle.

The above example is an electromagnetic wave shield material for a suit of a plain weave double structure, which is 1 / s of the fine spinning intertwisted yarn in which the polyester filament is wound around the warp and the weft.
60Nm (60th count) single yarn (marked with a cross in Fig. 1) and silospan yarn made of wool and polyester blend 2 / 50Nm
(50th count) 1/51 Nm in which twin yarn (marked with ○ in Fig. 1) and nylon single-filament filament are twisted with nylon silver plated filament
(51st) 3 with shield single yarn (indicated by ● in Fig. 1)
A woven fabric using a book is shown, and this shield single yarn (●
Marks) are arranged on the back side of the double woven fabric at a ratio of 1 in 8 in both the warp direction and the weft direction, and the shield single yarns (● marks) are woven in a mesh shape as a whole. In addition,
In FIG. 1 (A), the vertical and horizontal grids correspond to the intersections of the warp threads and the weft threads. In the areas where the grids of the intersections are filled in black, the weft threads sink under the warp threads, and in the white grid areas. It means that the weft is raised and woven on the warp.

The fabrics of the above examples were evaluated by the near field shield effect evaluation method using an Advantest TR-17301 tester for evaluating the electromagnetic wave shield effect. The electric field was 10 dB or more at 50 MHz to 1000 MHz, and 200 MHz to 600 M.
At Hz, an effect of 20 dB or more is recognized, and it can be said that there is an electric field shielding effect (see the graph in (A) of Fig. 2). The magnetic field is 10 dB or less at 50 MHz to 900 MHz and 10 dB or more at 1000 MHz, and the magnetic field shielding effect cannot be expected up to 900 MHz within the measurement range (see the graph in FIG. 2B). In addition, in FIG. 2 (A) and (B), for comparison, an ordinary woven fabric (WOOL FABRIC) and a metal plate (COPER METAL PLATE) are listed, and these and the present invention product 2 types (MCS2329) C / # 4 and (MCS2329) C / # 3 is compared and frequency is plotted on the horizontal axis.
In MHz, the vertical axis shows the shield effect in dB (left side) and% (right side).
It shows with.

Although the above-mentioned embodiments exemplify the case where the present invention is applied to a double woven fabric, it can also be applied to a multiple woven fabric, in which case an electromagnetic shielding thread is used as a backing layer or It is to be placed in the middle layer. Further, the electromagnetic wave shielding yarns are arranged as a warp yarn and a weft yarn in a part thereof in a mesh shape at a constant ratio, and the ratio thereof is appropriately set in relation to the required texture and the electromagnetic wave shielding effect. Is.

[0012]

According to the present invention, since the electromagnetic wave shielding yarn is arranged in the double-woven or multi-woven backing layer or the middle layer, it is possible to make the electromagnetic wave shielding yarn invisible from the outside, and therefore it is necessary. It is possible to provide an electromagnetic wave shielding fabric for clothing which is excellent in texture, surface feel and fashionability while having an electromagnetic wave shielding effect. Further, even when the electromagnetic wave shielding thread is arranged in a double-woven or multi-woven backing layer, the electromagnetic wave shielding thread is made of a conductive fiber obtained by silver-plating a nylon filament. It is not attached, has antibacterial properties, does not cause allergies even if it comes into direct contact with the skin of the wearer, and ensures sufficient safety. In particular, the woven fabric of the present invention is suitable for use as a material for heavy clothing such as suits, coats and jackets.

[Brief description of drawings]

1 (A) and 1 (B) are diagrams showing the structure of a woven fabric according to an embodiment of the present invention. FIG. 1 (A) is a diagram showing the ups and downs of wefts seen from the back side of the woven fabric, and FIG. It is a figure which shows how to pass a warp to a heddle.

FIG. 2 (A) is a graph showing comparative experimental data regarding the electric field shielding property of the product of the present invention and ordinary fabrics,
(B) is a graph showing comparative experimental data regarding the magnetic field shielding property of the product of the present invention and an ordinary fabric or the like.

Claims (2)

[Claims] 1. A conductive fiber obtained by silver-plating a nylon filament alone, a combination of the conductive fiber and a synthetic fiber or a natural fiber, or a combination of the conductive fiber, a synthetic fiber and a natural fiber. Using electromagnetic shielding yarns that have been twisted in the spinning stage or twisting stage, weaving with a double weave or multiple weave structural design, and the electromagnetic shielding yarns on the back side or middle of the double weave or multiple weave structural design. An electromagnetic shielding fabric for clothing, which is arranged in layers. 2. The electromagnetic wave shielding fabric for clothing according to claim 1, wherein the electromagnetic wave shielding yarns are arranged in a mesh shape in a warp direction and a weft direction.