Method for producing special pipes having longitudinally extendi

Details Method for producing special pipes having longitudinally extendi Method for producing special pipes having longitudinally extendi

1976-09-16

1978-09-12

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

Work is organic material

264 99, 264167, 264177R, 264209, 264296, 425325, 4253261, 425380, B29C 1702

Patent

active

041138147

ABSTRACT:
A method for producing a pipe, preferably of thermoplastic comprising a tubular body longitudinally partitioned by diaphragm into two conduits and having barriers projecting from the diaphragm into one of the conduits at the positions spaced along the length of the conduits and extending to contact intimately with the inside wall of the conduit. This pipe is useful as a hose for transporting liquid or for irrigation.

REFERENCES:
patent: 3708253 (1973-01-01), Lemelson
patent: 3929951 (1975-12-01), Shibata et al.

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