Title:
PLASTIC EXTRUDER, AND METHOD FOR MANUFACTURING POLYPROPYLENE INSULATED CABLE
Document Type and Number:
WIPO Patent Application WO/2023/116194
Kind Code:
A1
Abstract:
Provided in the present application are a plastic extruder, and a method for manufacturing a polypropylene insulated cable. The plastic extruder provided in the present application comprises a plastic extruder body, which comprises a machine body and a heating device, wherein the heating device is arranged on an outer side of the machine body and is used for heating same, so that the temperature of the machine body is greater than or equal to 300°C; and the machine body is internally provided with a material cavity, and a screw is rotatably provided therein. The screw comprises a feeding section, a compression section and a homogenization section, which are sequentially connected, the compression section having a double-start thread, and the length thereof being 55-65% of the sum of the lengths of the feeding section, the compression section and the homogenization section. The plastic extruder and the method for manufacturing a polypropylene insulated cable provided in the present application aim to at least solve the problems of poor plasticization and blocking of a discharge port which tend to occur during the preparation of cable insulation layers using polypropylene material, and thus meet the preparation requirements of cable insulation layers.
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Inventors:
ZHANG WEIDONG (CN)
MIAO SHUANGSHUANG (CN)
FENG YONGSHENG (CN)
HOU HONGJIAN (CN)
DING JIYE (CN)
CUI ZHICHAO (CN)
MA JIANFENG (CN)
MIAO SHUANGSHUANG (CN)
FENG YONGSHENG (CN)
HOU HONGJIAN (CN)
DING JIYE (CN)
CUI ZHICHAO (CN)
MA JIANFENG (CN)
Application Number:
PCT/CN2022/128190
Publication Date:
June 29, 2023
Filing Date:
October 28, 2022
Export Citation:
Assignee:
ZHONGTIAN TECH SUBMARINE CABLE CO LTD (CN)
International Classes:
H01B13/14; H01B3/44
Foreign References:
| CN104260306A | 2015-01-07 | |||
| CN107680734A | 2018-02-09 | |||
| CN114038633A | 2022-02-11 | |||
| US4778543A | 1988-10-18 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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