Method of preparing cured in place liner using resin...

Details Method of preparing cured in place liner using resin... Method of preparing cured in place liner using resin...

2007-07-03

2007-07-03

Maki, Steven D. (Department: 1733)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C138S097000

Reexamination Certificate

active

10704461

ABSTRACT:
A non-pressurized resin impregnation tower for continuously impregnating the resin impregnable layer of a tubular cured in place liner is provided. The tower is at a height to provide sufficient resin pressure head to impregnate the resin impregnable layer fully. The resin impregnated tube is fed into the top of the tower, drawn down about a roller at the bottom, removed from the top of the tower and then wrapped with an outer impermeable coating. The impregnated liner is suitable for pull-in-and-inflate method of installation or may be everted. For liners formed with an inner impermeable layer, the liner is suitable for curing with steam.

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