Electro-magnetic wave shielding knitted material and electro-magnetic wave shielding clothes

A technology of shielding weaving and electromagnetic waves, applied in the directions of shielding materials, shielding, weft knitting, etc., can solve the problems of inability to meet the electromagnetic wave characteristics, and achieve the effect of excellent hand feeling and improved electromagnetic wave shielding performance.

Inactive Publication Date: 2002-06-26
GUNZE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, even if a given electromagnetic wave shielding property can be obtained for a raw material sheet of electromagnetic wave shielding clothes using conductive fiber yarns, the given electromagnetic wave properties cannot be satisfied due to the diffraction and immersion of electromagnetic waves due to the shape of the clothes.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Electro-magnetic wave shielding knitted material and electro-magnetic wave shielding clothes
  • Electro-magnetic wave shielding knitted material and electro-magnetic wave shielding clothes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] As conductive fibers, various denier silver-plated nylon multifilament yarns (Xstatic produced by Sauquit Co., Ltd.) and cotton yarns of various counts were used, and the two fibers were aligned, and knitted with a 24.5-gauge jersey The whole process of knitting is carried out by the machine, and the braided fabric of the double-knitting structure is prepared by laminating the braided fabric formed of cotton yarn on the surface layer and the braided fabric formed of conductive fiber on the inside to make it integrated.

[0088] Then, using this knitted fabric, a knitted fabric layer made of cotton filaments on the inside and a knitted fabric layer made of conductive fibers on the outside were knitted to produce a shirt.

[0089] The structure of the produced braid and the performance evaluation results of the braid (feel evaluation characteristic value of the braid: G-soft, 800MHz KEC method electromagnetic wave shielding ability dB) are as follows figure 1 As shown, i...

Embodiment 2

[0093] Use the same conductive fiber and cotton silk as in Example 1, except that the composition of the braid is changed to an elastic weaving of 18.6 gauge, and the two fibers are also made to be consistent, and the elastic weaving machine is used to weave the whole process, and the weaving surface is made of cotton silk. As for the structure, a knitted fabric with a double-knit structure made of conductive fibers was also trial-produced for a trial shirt (shirt), and various performance evaluations were performed in the same manner as in Example 1.

[0094] Evaluation results such as image 3 As shown, the same results as in Example 1 are shown, and it is also shown that in order to obtain the necessary electromagnetic wave blocking ability (20dB), the constitutional condition of the conductive fiber braided layer is: in the case of elastic braiding, it is necessary to use a denier of 70d / 34f or more. Compared with Example 1, in the braided fabric made of conductive fibers,...

Embodiment 4

[0101] Except that in embodiment 3 with silver-plated nylon yarn: the ratio of single-fold covering yarn is 1: 2 (the ratio of single-fold covering yarn is 2 / 3) and carry out interlacing, completely make shirt the same as embodiment 3. The result is the same as in Example 3, as Figure 6 shown. (comparative example 1)

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The present invention provides a reversible knitted material comprising a conductive fiber yarn as a surface side and a natural fiber yarn as a back side, the conductive fiber yarn having a denier of about 70 to about 210, the natural fiber yarn having a cotton count of 30 to 150, and the material having a KES hand evaluation value (G-SOFT) of at least 6 and an electromagnetic wave shielding capability of at least 20 dB. Also provided is the reversible knitted material which further comprises an elastic fiber yarn, in addition to the conductive fiber yarn, as the surface side, the two yarns being interknitted. Further provided is an electromagnetic wave shielding garment obtainable by: measuring electromagnetic wave shielding capability using an apparatus for measuring and evaluating electromagnetic wave shielding capability of a garment in the state of being worn on the human body to determine sewing specifications; designing a garment shape to achieve a desired electromagnetic wave shielding capability; and making a garment of the designed shape.

Description

technical field [0001] The present invention relates to preventing electromagnetic waves from leaking from electronic devices that generate electromagnetic waves such as cellular phones or high-frequency electronic food heaters, TVs, and computer CRTs, and from high-frequency electromagnetic fields radiated from antennas located near the human body such as cellular phones or wireless devices. Electromagnetic wave shielding woven materials and electromagnetic wave shielding clothing for the purpose of electromagnetic wave influence on the human body. The electromagnetic wave shielding braided material and electromagnetic wave shielding clothing of the present invention can not only protect the human body from the influence of electromagnetic waves, but also effectively prevent misuse of medical devices implanted in the body, such as cardiac pacemakers. Background technique [0002] In the past, as a measure to prevent electromagnetic wave disturbances caused by electromagneti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A41D31/00D04B1/14D04B1/24G21F3/02H05K9/00
CPCH05K9/009A41D31/0066D10B2401/16D04B1/24D04B1/14D10B2403/0114A41D31/26D10B2501/02Y10T442/40Y10T442/413Y10T442/425Y10T442/475Y10T442/481
Inventor 石原谦浪崎敞生田中好森田真一郎堀克弘石川贤三山崎贵广清水俊幸
Owner GUNZE LTD
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