LINING METHOD FOR CONDUIT AND LINING MATERIAL FOR CONDUIT

WIPO Patent Application WO/2013/153652

A1

The purpose of the present invention is to reduce to as small a degree as possible the gap between a lining material and the inner surface of a conduit, in the curved section of the conduit. A sheet-shaped lining material (1) is rolled into a tubular shape, and in a state where both circumferential direction ends overlap in the circumferential direction, the lining material is installed in a conduit (P). In such case, the lining material (1) is installed at the curved section (P3) of the conduit (P) so that the overlapping portion (1a) of both circumferential direction ends of the lining material (1) faces the outer side of the curve of the curved section (P3). Next, the lining material (1) installed in the conduit (P) is subjected to diameter expansion while both circumferential direction ends are slid in the circumferential direction. This configuration enables, in the curved section (P3), the portion of the lining material (1) facing the outer side of the curve to become more easily expandable, and the gap with the inner surface of the curved section (P3) to become smaller.

ONISHI SHINJI (JP)
TSUZUKI HIROSHI (JP)
UEDA YASUHIRO (JP)

PCT/JP2012/060021

October 17, 2013

April 12, 2012

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ASHIMORI IND CO LTD (JP)
ONISHI SHINJI (JP)
TSUZUKI HIROSHI (JP)
UEDA YASUHIRO (JP)

B29C63/34; B32B3/02; B29L9/00

WO2011125534A1

2011-10-13

JP2012086386A	2012-05-10
JPH06246830A	1994-09-06
JPS568229A	1981-01-28
JP2003231177A	2003-08-19
JPH05506821A	1993-10-07
JP2011104786A	2011-06-02
JP2011042164A	2011-03-03
JP2001116165A	2001-04-27
JPH05278177A	1993-10-26

See also references of EP 2839947A4

KAJI, Yoshiyuki et al. (JP)
梶 Yoshiyuki (JP)

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