CURED-IN-PLACE LINER MATERIAL AND METHODS AND SYSTEMS FOR MANUFACTURE

WIPO Patent Application WO/2010/033297

A3

A liner tube (200) for repairing existing pipes is provided. The liner tube is sufficient flexible to lie substantially flat under its own weight thereby- defining an upper portion and a lower portion. The liner tube includes an inner layer (205), an outer layer (230) disposed around the inner layer, a first intermediate layer (210) disposed between the inner layer and the outer layer, the first intermediate layer being wrapped around the inner layer to overlap itself and define a first overlap portion in the upper portion, and a second intermediate layer (215) disposed between the first intermediate layer and the outer layer, the second intermediate layer being wrapped around the first intermediate layer to overlap itself and define a second overlap portion in the lower portion. The first and second intermediate layers (210, 215) include a porous material and the inner layer (205) includes material substantially impermeable to liquids. Systems used to manufacture the liner tube are also provided. These systems include a stringer apparatus for inserting a string into a spool of flexible tubing, an assembler apparatus for folding the layers of the liner tube and an impregnator apparatus for impregnating intermediate layers of the liner tube with resin.

QUITTER RENE (DE)

PCT/US2009/051057

November 18, 2010

July 17, 2009

Click for automatic bibliography generation  

QUITTER RENE (DE)
LIGHTSTREAM L P (US)

B29B15/12; B29D23/00; F16L55/165

DE4427633A1	1995-02-16
DE4445166A1	1996-06-27
FR2628507A1	1989-09-15
EP0876898A2	1998-11-11

HALL, David, A. et al. (Two Embarcadero Center Eighth Floo, San Francisco California, US)

View/Download PDF      PDF Help

Previous Patent: METHOD FOR FABRICATING A SOLAR CELL USING A DIRECT-PATTERN PIN-HOLE-FREE MASKING LAYER

Next Patent: ADDRESS GENERATION