Multi-layer plastic helical pipe and method for the production t

Details Multi-layer plastic helical pipe and method for the production t Multi-layer plastic helical pipe and method for the production t

1994-10-07

2000-02-08

Kashnikow, Andres

Pipes and tubular conduits

Distinct layers

Bonded to each other

138154, 138DIG7, F16L 9133

Patent

active

060218177

ABSTRACT:
A method of producing large-diameter helical pipes for plastic synthetic resins wherein the pipe has an outer layer comprised of a first plastic resin and an inner layer comprised of a second plastic resin. In a particularly preferred embodiment, a helical pipe having an outer layer which is an ultraviolet light-protective color and an inner plastic layer which is a light-reflecting color is provided.

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