Method for manufacturing a thermoplastic pipe

Details Method for manufacturing a thermoplastic pipe Method for manufacturing a thermoplastic pipe

1995-05-25

1997-08-05

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264230, 264909, 425393, B29C 6102

Patent

active

056539355

ABSTRACT:
In a method for manufacturing a thermoplasic pipe a pipe-shaped blank having larger wall thickness and less diameter than the completed thermoplastic pipe is positioned in a cylindrical chamber. The blank is formed by being softened and expanded into engagement with the inner surface of the chamber. A sealing ring is then mounted in an end portion of the plastic pipe by positioning the sealing ring in the expanded blank and shrinking the blank around the sealing ring by heating the pipe end portion.

REFERENCES:
patent: 3544672 (1970-12-01), Goda et al.
patent: 3887674 (1975-06-01), Oostenbrink
patent: 4369159 (1983-01-01), Irmer
patent: 4386045 (1983-05-01), Vaisanen
patent: 4395379 (1983-07-01), Herder
patent: 4625383 (1986-12-01), Vassallo et al.

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