Title:
CONDUIT LINING MATERIAL AND METHOD OF MANUFACTURING THE SAME
Document Type and Number:
WIPO Patent Application WO/1997/017187
Kind Code:
A1
Abstract:
A conduit lining material comprising a continuous cylindrical layer of a film of a synthetic resin formed on the outer surface of a cylindrical nonwoven cloth, which is obtained by cylindrically rolling a sheet type non-woven cloth, and which has a sewn portion formed by sewing both side edges of the cylindrically rolled cloth, the thickness of the portion of the layer of a film which corresponds to the sewn portion of the cloth being set larger than that of the other portion thereof, whereby the elongation of the sewn portion, and the occurrence of pin holes in the sewn portion during the repairing of the conduit are prevented.
Inventors:
MAEMOTO YUKIKAZU (JP)
SAITO HITOSHI (JP)
SAITO HITOSHI (JP)
Application Number:
PCT/JP1995/002287
Publication Date:
May 15, 1997
Filing Date:
November 09, 1995
Export Citation:
Assignee:
ASHIMORI IND CO LTD (JP)
MAEMOTO YUKIKAZU (JP)
SAITO HITOSHI (JP)
MAEMOTO YUKIKAZU (JP)
SAITO HITOSHI (JP)
International Classes:
B29C48/10; B29C48/151; B32B27/12; F16L55/165; B29C53/38; B29C63/00; (IPC1-7): B29C63/36
Foreign References:
| JPS6032623A | 1985-02-19 |
Other References:
See also references of EP 0803343A4
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