发明名称 |
Pipe liner bag, manufacturing method therefor and pipe repair method |
摘要 |
A pipe liner bag is provided for reliably lining a pipe into which water may penetrate. The pipe liner bag has a double layer structure including an inner layer of a tubular nonwoven fabric made of fine yarn of three deniers or less and an outer layer of a tubular nonwoven fabric made of fat yarn of 3-15 deniers. The tubular nonwoven fabric constituting the inner layer is impregnated with highly viscous and thixotropic hardenable resin mixed with granule fillers of a small diameter, while the tubular nonwoven fabric constituting the outer layer is impregnated with hardenable resin mixed with granule filler of a large diameter. After the pipe liner bag is everted and inserted into a pipe to be repaired by fluid pressure, the hardenable resin impregnated in the pipe liner bag is cured while maintaining the internal pressure thereof constant. When this pipe liner bag is used to repair a pipe from which a branch pipe is branched off, it can be integrated with a branch pipe liner bag.
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申请公布号 |
US5474823(A) |
申请公布日期 |
1995.12.12 |
申请号 |
US19940223563 |
申请日期 |
1994.04.06 |
申请人 |
SHONAN GOSEI-JUSHI SEISAKUSHO K.K.;YOKOSHIMA & COMPANY |
发明人 |
KAMIYAMA, TAKAO;YOKOSHIMA, YASUHIRO |
分类号 |
B29C63/36;B29C63/00;B29C70/02;B29K105/06;B29L23/00;B32B1/08;B32B27/04;F16L55/165;F16L57/00;(IPC1-7):B29D22/00 |
主分类号 |
B29C63/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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