Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method of manufacturing electro-magnetic wave shielding yarn

a technology of electromagnetic wave shielding and manufacturing method, which is applied in the direction of yarn, textiles and paper, can solve the problem that applying this method to natural fibers cannot guarantee the durability against laundering, and achieve the effect of good shielding materials, perfect solid color, and sufficient shielding

Inactive Publication Date: 2003-03-20
YOUNG NAM TEXTILE
View PDF9 Cites 43 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] To prevent breaking copper wire of weak strength, synthetic filament yarn and copper yarn is twisted together and this twisted yarn-wire is used as core. Roving is prepared with conventional process of cotton spinning system or worsted system, using natural fiber, synthetic fiber or its blend. The twisted core and roving are supplied to the apparatus on the ring spinning machine to spin core yarn. Draft of suitable ratio is applied to the core to make it to be covered with the fiber from the roving. The adjustment of the ratio of draft is crucially important to get thorough covering of core with fiber.
[0014] Material of any fiber, either natural, synthetic or blended, is fed the conventional cotton spinning system or worsted spinning system and roving is made with prior art. Gold, silver, platinum, stainless, iron and carbon can be used as conductive material. Among them, copper has good properties with handy availability, being less expensive.

Problems solved by technology

Applying this method to natural fiber can not pledge the durability against laundering.

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of manufacturing electro-magnetic wave shielding yarn
  • Method of manufacturing electro-magnetic wave shielding yarn

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0022] Roving of cotton was made with conventional method. Copper wire of 0.03 micron and polyester mono filament of 20 denier were twisted with twists of 720 per meter. These twisted yarns were supplied to the tension applying device, adjusting draft ratio to 1.08 through which these yarns were fed to the front rollers. Prepared roving was supplied to the same front rollers through back and middle rollers. The core spun yarns were twisted with twists of 18 twists per inch and the yarn number was 16 in English cotton count. These core spun yarns were knitted with regular cotton yarn of 20 E.C.C. and were arrayed once every 7 regular cotton yarns. The knitted fabric was dyed cotton side only.

[0023] Perfect solid color was acquired. The feeling of the fabric was as good as that of conventional cotton fabric. Effect of electromagnetic wave shielding was 71.5%. Antibiotic degree was 99.5%. Voltage of anti-static charge was 654 volts.

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
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
surface velocityaaaaaaaaaa
durabilityaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a method of manufacturing electromagnetic wave shielding yarn comprising the steps of (1) spinning core yarn with the apparatus for core spun yarn on ring spinning machine, (2) preparing rovings made of natural, synthetic and blended fiber, (3) preparing a twisted wire-filament core, (4) feeding rovings to front rollers through back and middle rollers, (5) supplying said twisted core to the front rollers applying tension on the twisted core by means of drafting the twisted core with suitable draft ratio which is the ratio of surface velocity between core supplying rollers and the front rollers and (6) twisting the delivered core yarn.

Description

[0001] The present invention relates to a method of manufacturing electromagnetic wave shielding yarn, in particular an electromagnetic wave shielding yarn improving the effects of shielding the electro-magnetic wave and anti-biotic degree.[0002] The yarn according to the invention has ability of shielding electromagnetic wave. Techniques of spinning core yarn are utilized, but more subtle modifications are added to the conventional technique of core yarn making.[0003] Many reports regarding harmfulness of electromagnetic wave to human body are published. Various methods or products, which can protect a person from the harms of the wave has been introduced. Among them, wearing products also introduced in the market. Some products are made of fabrics, which are coated with silver or copper by means of making electric charges. Applying this method to natural fiber can not pledge the durability against laundering.[0004] Some products are made of fabrics which contain bare copper wires....

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): D02G3/38D02G3/44
CPCD02G3/38D02G3/441D02G3/367D02G3/44
Inventor KIM, KI-WHAN
Owner YOUNG NAM TEXTILE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com