CORROSION PREVENTION METHOD FOR WELDED SECTION OF PLASTIC-LINED STEEL TUBE AND PRESS-ADHERED TAPE FOR HEAT-SHRINKING CORROSION-PREVENTING SHEET

WIPO Patent Application WO/2015/083811

A1

This corrosion prevention method, which is for a welded section and that performs corrosion prevention processing on the welded section of a plastic-lined steel tube using a heat-shrinking corrosion-preventing sheet, has at least: a step for affixing the terminal end of a heat-shrinking corrosion-preventing sheet, which is wound around the peripheral surface of at least the welded section of a plastic-lined steel tube, by means of a press-adhered tape for the heat-shrinking corrosion-preventing sheet and having an adhesive agent of which the shear force at the temperature at which the shrinking force of the heat-shrinking corrosion-preventing sheet is the greatest is greater than the greatest shrinking force; and a step for heat-shrinking the heat-shrinkable corrosion-preventing sheet. The press-adhered tape for the heat-shrinking corrosion-preventing sheet results from providing an adhesive layer, which contains a cross-linkable adhesive cross-linked by means of heating, to one surface of a heat-resistant substrate film, and the shear force at the temperature at which the shrinking force of the heat-shrinking corrosion-preventing sheet is the greatest is greater than the greatest shrinking force.

NEMOTO KOJI (JP)
MIYAHARA TOSHIO (JP)
NAGANUMA KAZUHIRO (JP)
YANO KIYOMITU (JP)
SEITA HIDEHISA (JP)

PCT/JP2014/082179

June 11, 2015

December 04, 2014

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FURUKAWA ELECTRIC CO LTD (JP)
FURUKAWA ELECTRIC POWER SYSTEMS CO LTD (JP)

F16L58/02; C09J7/22; C09J7/35; C23F11/00

JPH09159095A	1997-06-17
JPS59181735U	1984-12-04
JPH0460296A	1992-02-26
JP2005307329A	2005-11-04

IIDA, Toshizo et al. (JP)
Toshizo Iida (JP)

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