Sumitomo Electric Industries, Limited

Other

Sumitomo Chemical Company, Limited

Hiroaki Mukunashi

Hiroshi Shimba

Yoshiharu Tatsukami

Kunihiro Nakagaki

Terumichi Ichiba

Kanji Yoshikawa

Kuniharu Usui

A jointer for laminated tapes for use in the production of sheathed cables formed by longitudinally or helically wrapping cable cores with metal tapes laminated with plastic films and by joining the overlapped portions of said tapes by way of heat fusion is disclosed. The method comprises the use of pressing blocks consisting of metal material having a high heat conductivity and respectively having machined surfaces opposing in parallel to each other for the application of uniform pressure to both surfaces of the laminated tapes held therebetween. A heating piece is provided which is electrically insulated from and mounted to the bottom of the pressing block and having relatively high electric resistance and being supplied with electric current thereby pulse heating the portions of the laminated tapes to be spliced.

Impulse heat joining of wrapping tapes for wire cables

A terpolymer, consisting essentially of (a) a first component of ethylene, (b) a second component selected from an (1) unsaturated glycidyl ester of the following formula (I) and (2) an unsaturated glycidyl ether of the following formula (II), and (c) a third component selected from an alkyl acrylate, an alkyl methacrylate and vinyl acetate, is coated on one or both surfaces of a metal foil to make a laminate tape. ##EQU1## wherein R represents a hydrocarbon residue containing an ethylenically unsaturated bond. The laminate tape is used for preparing a laminate sheathed cable. The terpolymer resin may contain an antioxidant.

Laminate tape and laminate sheathed cable

The mechanical properties of laminate sheathed cables are improved by using as the shielding layer a laminate tape prepared by coating a metallic foil with an ethylene-glycidyl-methacrylate-vinyl acetate terpolymer

Laminated sheathed cable

Growing community of inventors

Yokohama, Japan

Hiroaki Mukunashi