Permanent conforming pipe for conducting fluids and the like and

Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing multilayer work or article

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Details

156 71, 156294, 264 35, 264 36, 264 82, 264261, 264262, 405156, B32B 3106, B32B 3500

Patent

active

047524316

ABSTRACT:
A process for making a rigid pipe with the aid of flexible parallel coextensive skins interiorly filled with a catalyst-curable flexible filler, where the flexible skins and filler are laid along any desired surface contour and then the interior space within the inner skin is expanded to form the pipe and catalyst is introduced through one or both of the skins which is catalyst-permeable, to produce a rigidized pipe.

REFERENCES:
patent: 3399094 (1968-08-01), Skoggard et al.
patent: 3823565 (1974-07-01), Takada
patent: 4009063 (1977-02-01), Wood
patent: 4110991 (1978-09-01), Torkuhl
patent: 4350548 (1982-09-01), Zenbayaski et al.
patent: 4427480 (1984-01-01), Kamuro et al.
patent: 4496499 (1985-01-01), Brittain et al.

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