Accession Number : ADD014442

Title :   Semi-Foamed Polyethylene Molding Tape.

Descriptive Note : Patent, Filed 12 Dec 86, patented 26 Jul 88,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Phillips, Raymond J ; O'Brien, Douglas

Report Date : 26 Jul 1988

Pagination or Media Count : 6

Abstract : The present invention relates to an insulated covering for electrical hardware and more particularly to a tape covering for bonding a cable jacket to the strength member of an electrical connector for use in a cable system that is buoyant in seawater. A semi-foamed polyethylene tape for use in the molding of foamed jacket polyethylene cables is disclosed. After tumble mixing low density foaming polyethylene, ethylene vinyl acetate co-polymer and polyethylene color concentrate, the tape is extruded on a thermoplastic extruder having a maddox-mixing screw that effectively mixes polyethylene compounds and a slot die with a suitable opening dimension. The tape is then quenched. By controlling manufacturing variables the tape is foamed to 40% to 50% of its maximum. The tape is then foamed to 100% maximum during the manufacturing of a cable assembly. Keywords: Patents, Electric cables, Electric connectors. (aw)

Descriptors :   *ELECTRIC CABLES, *ELECTRIC CONNECTORS, *FOAM, *PATENTS, *POLYETHYLENE, *TAPES, *ELECTRICAL INSULATION, CABLE ASSEMBLIES, COLORS, DIES, ELECTRICAL PROPERTIES, JACKETS, MANUFACTURING, MOLDINGS, OPENING(PROCESS), SEA WATER, SIZES(DIMENSIONS), SLOTS, VARIABLES

Subject Categories : Plastics
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE