The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 1982
Filed:
Oct. 02, 1981
Hiroshi Harakawa, Ichihara, JP;
Youtaro Fujiwara, Ichihara, JP;
Masaaki Matsushita, Ichihara, JP;
Seiko Tsutsui, Ichihara, JP;
Ube Industries, Ltd., Chiba, JP;
Abstract
A fusion-bondable sheet is provided which is used as an overtape for covering a joint portion of a heat-shrinkable cover sheet applied onto a joint of steel pipe or cable and which is also used as a cover sheet for repairing a damaged protecting cover of a steel pipe. The fusion-bondable sheet comprises (a) a crosslinked polyolefin sheet, (b) a fusion-bondable layer formed on one surface of the crosslinked polyolefin sheet, which layer is mainly composed of a polyolefin having a melting point of 80.degree.-200.degree. C., a polyolefin having a melting point of 30.degree.-75.degree. C. and a tackifier, and (c) a flame-retardant sheet bonded to the other surface of the crosslinked polyolefin sheet through a binder or adhesive layer. Preferably, the flame-retardant sheet is larger in size than the crosslinked polyolefin sheet and the edges of the former sheet outwardly extend from the edges of the latter sheet.