Title:
LINING MATERIAL FOR DUCT
Document Type and Number:
WIPO Patent Application WO/1988/000133
Kind Code:
A1
Abstract:
A lining material formed by providing a nonwoven fabric of a special shape on the inner side of a conventional air-tight tubular woven cloth which has a synthetic resin film on the outer surface thereof, and which is adapted to be inserted into a duct as it is turned inside out by a fluid pressure. The lining material according to this invention has various properties required in conventional lining materials of this kind, and also other properties, such as earthquake resistance and shape-retentivity under an external hydraulic pressure, and is suitably used to reinforce various kinds of underground pipes.
Inventors:
Hyodo
Masakatsu, Yagi
Isaburo
Masakatsu, Yagi
Isaburo
Application Number:
PCT/JP1986/000336
Publication Date:
January 14, 1988
Filing Date:
June 30, 1986
Export Citation:
Assignee:
ASHIMORI KOGYO KABUSHIKI KAISHA.
International Classes:
F16L55/165; (IPC1-7): B32B5/26; B32B5/28; B29C63/36; F16L55/18; F16L58/10
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