Title:
COAXIAL CABLE INSULATING MATERIAL, COAXIAL CABLE AND MANUFACTURE OF COAXIAL CABLE
Document Type and Number:
Japanese Patent JP3227091
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a coaxial cable insulating material to be foaming extrusion molded under the existence of a foaming agent containing a polyolefin contg. resin hot-melt extruded and fluororesin powder as a nucleus forming agent, a coaxial cable having an insulated layer made of the insulating material and a manufacture for a coaxial cable made by extruding the insulating material under the presence of the foaming agent and forming the insulated layer.
SOLUTION: A molding having fine and uniform cells and a high foaming level is obtained from a coaxial cable insulating material containing fluororesin powder, for instance PTFF, as a nucleus forming agent. This molding has an excellent electric characteristic and a coaxial cable having such an insulated layer has an excellent attenuation amount characteristic. Also, since the drying step of the insulated layer is made unnecessary, the production efficiency of the coaxial cable is improved and producing costs are reduced, and further the insulating material is obtained at low costs.
Inventors:
Takashi Higashikubo
Zushi Toshihiro
▲葛▼下 弘和
development
Zushi Toshihiro
▲葛▼下 弘和
development
Application Number:
JP14048296A
Publication Date:
November 12, 2001
Filing Date:
June 03, 1996
Export Citation:
Assignee:
Mitsubishi Cable Industries, Ltd.
International Classes:
C08J9/12; H01B3/44; H01B7/02; (IPC1-7): H01B3/44; C08J9/12; H01B7/02
Domestic Patent References:
| JP770348A | ||||
| JP2279739A |
Attorney, Agent or Firm:
Hajime Takashima