Patents Assigned to Dainichi Nihon Densen Kabushiki Kaisha
  • Process for producing electric cable insulated with cured polyolefin
    Patent number: 4091064
    Abstract: Electric cables insulated with a cured polyolefin and having high electrical breakdown strength are produced, in each instance, by applying, an insulating layer of polyolefin containing a curing agent onto a conductor by means of an extruder, forming and hot-curing said layer by means of a long-land die, simultaneously applying a specific forming coagent to a tapered portion of the long-land die, and cooling the resulting hot-cured insulating layer formed on the conductor in a cooling zone.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: May 23, 1978
    Assignees: Dainichi Nihon Densen Kabushiki Kaisha, Mitsubishi Petrochemical Co., Ltd
    Inventors: Mitsuo Kakinuma, Isoji Motegi, Yasuo Matsui, Masatake Matsui, Masaaki Ohtsuju, Kiyoshi Takahashi, Takeo Fukuda