LINING METHOD, REGENERATED PIPE LINE, AND REGENERATION MEMBER

WIPO Patent Application WO/2013/005309

A1

In the lining method for regenerating dilapidated existing tubes (100), first, the diameter of a coiled molding (12) is reduced by applying a torque on the coiled molding (12) in the winding direction thereof. Next, the reduced diameter coiled molding (12) is inserted into the existing tube (100). Then, a reduced diameter lining material (14) is inserted inside the coiled molding (12). By then heating and applying an internal pressure on the lining material (14) to restore the cross-sectional shape thereof to a substantially perfect circular shape, a lining tube (24) is formed. As a result, a regenerated pipe line (10) is formed inside the existing tube (100) over the entire length thereof. By providing the coiled molding (12) with the strength to withstand the external pressure of the embedding soil, the thickness of the lining material (14) wall can be reduced in the regenerated pipe line (10) thus formed. As a result, the time for forming the lining tube (24) can be shortened. Transport and handling of the lining material (14) are also facilitated and workability is excellent.

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HORI CHIAKI (JP)
OCHI SATOSHI (JP)
KASA HIDEKI (JP)
MURAKAMI KEISHI (JP)
TAKAGI AKIRA (JP)

PCT/JP2011/065435

January 10, 2013

July 06, 2011

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KUBOTA C I CO LTD (JP)
HORI CHIAKI (JP)
OCHI SATOSHI (JP)
KASA HIDEKI (JP)
MURAKAMI KEISHI (JP)
TAKAGI AKIRA (JP)

B29C63/34

JP2007309423A	2007-11-29
JPH0857956A	1996-03-05

YAMADA, YOSHITO (JP)
Yoshito Yamada (JP)

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