公开(公告)号：JP2000029389A

公开(公告)日：2000-01-28

申请号：JP19714698

申请日：1998-07-13

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： FUJITA TARO ,  KISHIMOTO TOMOYOSHI ,  HIROTA MASAMICHI ,  KATO KIYOSHI

IPC: B32B7/02 ,  B29C63/42 ,  G09F3/02 ,  G09F3/04 ,  G09F13/20 ,  G09F13/22

Abstract: PROBLEM TO BE SOLVED: To make it possible to enhance light emission intensity, to enhance easily and effectively the visibility of an object in the nighttime or in a dark place and to facilitate identification by forming a light reflective layer on the inside surface of a heat shrink layer formed of a thermoplastic resin compsn. contg. light storage pigments. SOLUTION: The light reflective layer 3 is formed on the inside surface of the heat shrink layer 2 formed of the thermoplastic resin compsn. contg. light storage pigments. The inside surface of the light storage layer is provided with the light reflective layer 3, by which the light heading toward the inside surface from the light storage layer may be reflected and the intensity of the light reflecting to the outer side may be enhanced. The light reflective layer 3 to be formed on the inside surface of the heat shrink tube 1 having the light storability may be formed by sticking metallic foil of aluminum, etc., to the inside surface of the tube or melt extruding the thermoplastic resin compsn. contg. the pigments of bright colors to the inside surface of the tube, etc. The thermoplastic resin is preferably a copolymer, of polyethylene, ethylene system, etc.