Yazaki Corporation

Idemitsu Kosan Company, Limited

Atsushi Sugiyama

Masato Koike

Yasuhisa Sugita

Kazuyoshi Yabe

Koji Nishina

Susumu Hara

The corrugated tube includes a body in which a plurality of peaks and a plurality of valleys are continuously alternated in a longitudinal direction of the body. A slit is formed in the body along the longitudinal direction. Both end portions of the body between which the slit is interposed are overlapped. A mark is provided to only one peak of the plurality of peaks at the one end portion of the body, and another mark is also provided to corresponding only one peak of the plurality of peak disposed at the other end portion of the body and brought into a fitting engagement with the marked peak disposed at the one end portion of the body.

Corrugated tube

A covering sheet for being wound on a sheathed wire, includes a base sheet that has a strip shape, and an adhesive tape that has an adhesive surface formed only on one side thereof. The adhesive tape is bonded to the base sheet so as to project from one side edge portion of the base sheet.

Covering sheet and wire harness

A polypropylene-based resin composition including (A) 70 to 96 mass % of a polypropylene-based soft resin having an ISO D hardness of 35 or less and containing 25 to 55 mass % of xylene-insoluble part at room temperature and 75 to 45 mass % of xylene-soluble part at room temperature, (B) 2 to 10 mass % of homopolypropylene having a melt mass flow rate (MFR) at 230&#xb0; C. under a load of 2.16 kg measured in accordance with JIS K 7210 of 1 to 30 g/10 min. and stereoregularity (meso pentad fraction) of 90% or more, (C) 2 to 20 mass % of a propylene-ethylene random copolymer having an ethylene content of 1 to 10 mass %, and (D) 0 to 15 mass % of a platy inorganic filler.

Polypropylene-based resin composition and molded product thereof

A corrugated tube having an elastic material in which a slit is formed over the entire length of a cylindrical periphery of a flexible tube main body, and a wire harness is contained with the slit being in a closed state. Both ends of the slit are formed over a predetermined peripheral width with a soft material composition having a lubricant and a soft material having a hardness less than that of an outer skin of electric wires that constitute a wire harness to be contained. The corrugated tube is capable of accommodating a wire harness with no injury and enabling a smooth wire harness accommodating operation.

A wire-protective tube which has a resin composition having 100 parts by weight of a polypropylene, from 10 to 500 parts by weight of a propylene block copolymer having a propylene monomer unit and an ethylene monomer unit in a specific proportion, from 1 to 50 parts by weight of a bromine-based flame retardant, and from 1 to 30 parts by weight of a flame retardant aid.

Growing community of inventors

Susono, Japan

Atsushi Sugiyama