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Electrically conductive, elastic compound thread, particularly for rfid textile labels, the use thereof, and the production of a woven fabric, knitted fabric, or meshwork therewith

A technology of composite thread and conductive thread, which is applied to the antenna of RFID textile tags, the production of fabrics, knitted fabrics and braided fabrics, and can solve the problems that it is impossible to have no interference, and the conductive function cannot be absolutely guaranteed.

Inactive Publication Date: 2009-11-11
TEXTILMA AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-listed yarns all have the disadvantage that they cannot be incorporated into the fabric without interference, and there is no absolute guarantee that the conductive function will remain after being incorporated into or applied to the fabric

Method used

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  • Electrically conductive, elastic compound thread, particularly for rfid textile labels, the use thereof, and the production of a woven fabric, knitted fabric, or meshwork therewith
  • Electrically conductive, elastic compound thread, particularly for rfid textile labels, the use thereof, and the production of a woven fabric, knitted fabric, or meshwork therewith
  • Electrically conductive, elastic compound thread, particularly for rfid textile labels, the use thereof, and the production of a woven fabric, knitted fabric, or meshwork therewith

Examples

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Embodiment Construction

[0021] figure 1 A composite thread 2 according to a first embodiment of the invention is shown, in which a loose conductive thread 4 and a tension-relief thread 6 which is in tension compared to it are interwoven with a binding thread 8 . In other words, the tension relief wire 6 is in a state of higher tensile stress than the conductive wire 4 . The conductive thread 4 and the tension relief thread 6 are designed here such that the conductive thread 4 is subjected to a tensile load only at point a+b, at which point the tension relief thread 6 has reached its breaking limit 62 approximately at 28% elongation. In addition, the tensile strength of the tension relief thread 6 is greater than that of the conductive thread 4 . That is, this is equivalent to image 3 Case II of the breaking strength curve.

[0022] This composite thread 2 is produced on a knitting machine or a raschel machine. In this example, the composite thread has about 22 needles per cm. The tension relief...

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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Abstract

In order to provide an electrically conductive, elastic, textile-processable compound thread (2), and protect the same from breaking under stress, the invention provides that the compound thread (2) has at least one conductor thread (4), a textile tension relief thread (6), and a textile binder thread (8). The compound thread (2) is produced on a knitting or double rib machine using textile binder threads (8), or knitted threads, or on a weaving machine using weft threads and textile binder threads (8). The tension relief thread (6) is disposed at higher tension than the conductor thread (4) and can be stressed using higher tension.

Description

technical field [0001] The invention relates to a conductive and elastic composite wire, especially for antennas of RFID textile labels. A composite thread is understood here to mean that it consists of different threads or fibers. Furthermore, the invention relates to its use and its production of fabrics, knits and braids. Background technique [0002] It is known, for example, from WO 2002 / 071605 to incorporate conductive threads into the fabric which serve as transponder antennas in the tag. Such conductive threads are made of copper, for example, and are added by weaving during the textile production process or are applied to the fabric afterward using embroidery techniques. If the current conductor thread itself should be designed to be elastic, the known conductor threads are not suitable, since in particular the elasticity of the metal thread is not sufficient to obtain the elasticity of the entire thread. [0003] In WO2004 / 027132A1 (and also in the priority firs...

Claims

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Application Information

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IPC IPC(8): D02G3/32D02G3/44
CPCD04B21/202D02G3/32D02G3/441
Inventor 弗朗西斯科·斯派克
Owner TEXTILMA AG
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