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Electrically conductive thread

A technology of conductive yarns and yarns, applied in the direction of yarns, conductors, circuits, etc., can solve the problems of large permanent elongation, residue, etc.

Inactive Publication Date: 2005-09-21
W ZIMMERMANN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although they can withstand minor elongations of 3% to 5% without loss of conductivity, considerable permanent elongation remains

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Lycra 163C elastic yarn with a pretension strength of 1880 decitex (dtex) on a yarn winder (manufacturer: DuPont De Nemours International S.A. FibresDepartment, Du Pont Straβe 1, Bad Homburg; product name: LYCRA elastic yarn; min. Special / Model: 1880dtex T.136C). The yarn had an elongation at break of 500% and a tear strength of 1300 cN. After elongation of 100%, the yarn relaxes except for a permanent elongation of 2.4%.

[0049] Pass pre-stretched Lycra filaments through hollow spindles. The hollow spindle carries a hard silver-plated copper wire with a thickness of 0.04 mm fully drawn out by the Lycra wire (manufacturer: Elektro-Feindraht AG in CH-8182 Escholzmatt; product name: coated silver / copper textile wire type TW -D) Conical spindle. The measured diameter of the wire including the lacquer coating was 0.048 mm. The wire had an elongation at break of 21.3%.

[0050] The single wire wound Lycra wire was passed through a second hollow spindle. The hollow spi...

Embodiment 2

[0053] The elastic conductive corespun yarn of Example 1 was used as the weft yarn on a commercially available power loom. The warp beam consists of a single twisted cotton thread 0.3mm thick and 8 silk threads. When interlaced, a strong fabric is produced that has excellent electrical conductivity in the weft direction and which cannot conduct electrical current in the warp direction. These electrical properties are retained even after weft stretching exceeds 120%. If the electrodes of a DC voltage supply are connected at regular intervals in the meridional direction, this voltage can be applied at intervals of one meter in the weft direction to operate electrical receivers, such as light emitting diodes. The fabric can be stretched in the weft direction without affecting the power supply of the LEDs.

Embodiment 3

[0055] The elastic conductive corespun yarn of Example 1 was used as the weft yarn on a commercially available power loom. The warp beam consists of a corespun yarn that is conductive but not rubber-elastic. To make the warp, a commercially available polyamide yarn (PA66) with 78 dtex and 34 monofilaments is used to achieve a commercially available polyamide yarn (PA66) with 0.041 mm thick, hard silver-plated copper wire inner wrap and outer wrap with 100 dtex and 34 filaments. 36 monofilament polyester yarns.

[0056] When interlaced, a strong fabric is produced with excellent conductivity in the weft direction, and the conductivity of the fabric in the warp direction is independent of its conductivity in the weft direction. These electrical properties are retained even after weft stretching exceeds 120%. The fabric, which can be economically fabricated with appropriate electronic activity, can be used as a substrate for spatially resolved signal capture, or for operating s...

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Abstract

The invention relates to electrically conductive thread. Said thread comprises at least one elastic core thread, at least one electrically conductive thread that is wound around the core thread and at least one binding thread that is wound around the core thread and is non-electrically conductive. The extensibility of the entire electrically conductive thread is restricted by the binding thread.

Description

field of invention [0001] The present invention relates to elastic conductive yarns, their use and methods of manufacture. Background technique [0002] Various methods are known for producing conductive yarns. For example, wires, screens, or metal-containing yarns are permanently blended directly into fabrics to eliminate static charges. These fabrics are often difficult to produce on looms and have little visual resemblance to textiles and / or have a metallic feel due to the exposed metal filaments. [0003] Furthermore, methods for producing so-called staple fiber yarns are known. Essentially, they consist of spinning short textile fibers together with short, very fine metal fibers into yarns. Depending on the metal content, these yarns have more or less textile or metallic properties. Staple yarns with good electrical conductivity exhibit a metallic appearance and surface feel. [0004] It is also known that a wire with a center is wound single or double by a textile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/12D02G3/04D02G3/12D02G3/32D02G3/44H01B5/10H05B3/56
CPCD02G3/441D02G3/12Y10T428/2933D02G3/328
Inventor R·努斯科A·帕尔泽G·迈尔
Owner W ZIMMERMANN
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