Lateral pipe lining material and lateral pipe lining method
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United States of America Patent
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N/A
Issued Date -
Jul 23, 2009
app pub date -
Jan 22, 2009
filing date -
Jan 23, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A lateral pipe lining material having a tubular resin-absorbing material impregnated with a thermosetting resin is inserted through a main pipe into the lateral pipe. The lateral pipe lining material is provided with a pushing-up member to push up a collar formed at its end of the lateral pipe lining material. When the lateral pipe lining material is drawn into the lateral pipe to the extent that the collar reaches an opening of the lateral pipe, the pushing-up member is lifted to bring the collar into close contact with the lateral pipe opening periphery of the main pipe. The lateral pipe lining material is then expanded and a heating medium is applied thereto to cure the resin impregnated in the tubular resin-absorbing material. The lateral pipe lining material can be drawn smoothly into the lateral pipe even when it is bent, enabling the lateral pipe to be lined with a high quality.
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