Title:
FIRE RESISTANT CABLE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/120565
Kind Code:
A1
Abstract:
A fire resistant cable manufacturing method, comprising the following steps: conductor manufacturing: performing stranding to form a conductor; insulation manufacturing: extruding an insulating outer layer outside the conductor to form an insulating wire core; fire resistance manufacturing: longitudinally wrapping a mica layer with a hot melt adhesive being provided on the inner surface thereof outside the insulating wire core, and then fixing same by means of a binding strip, thereafter, sending same into an oven for heating so as to enable tight adhesion between the mica layer and the insulating outer layer and mica layer overlapping positions to form a fire resistant wire core; pair twisting: twisting two fire resistant wire cores together to form a twisted pair; cabling: twisting a plurality of twisted pairs together to form a bunched wire; weaving: longitudinally wrapping an aluminum foil layer outside the bunched wire, and then weaving a weaved layer outside the aluminum foil layer to form a weaved cable core; and sheath extruding: extruding a thermoplastic material layer outside the weaved cable core. The present invention has a high production efficiency, a simple manufacturing process and low costs, and the produced cable has excellent fire resistance and transmission performance, and good anti-interference performance.
Inventors:
LUO YINGBAO (CN)
TONG JIANFANG (CN)
ZHONG HUA (CN)
JIANG ZHENGQUAN (CN)
WANG WENQIANG (CN)
HUANG JIYUE (CN)
TONG JIANFANG (CN)
ZHONG HUA (CN)
JIANG ZHENGQUAN (CN)
WANG WENQIANG (CN)
HUANG JIYUE (CN)
Application Number:
PCT/CN2020/097064
Publication Date:
June 24, 2021
Filing Date:
June 19, 2020
Export Citation:
Assignee:
ZHEJIANG ZHENGDAO CABLE CO LTD (CN)
International Classes:
H01B13/10; H01B13/14; H01B13/24; H01B13/26
Foreign References:
| CN108565046A | 2018-09-21 | |||
| CN101447252A | 2009-06-03 | |||
| CN105383993A | 2016-03-09 | |||
| CN105427921A | 2016-03-23 | |||
| CN110993192A | 2020-04-10 | |||
| CN202549405U | 2012-11-21 | |||
| CN200959252Y | 2007-10-10 | |||
| JPH08287737A | 1996-11-01 |
Attorney, Agent or Firm:
ZHEJIANG KG IP LAW FIRM (CN)
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