Process for lining a tube

Details Process for lining a tube Process for lining a tube

1991-03-26

1995-04-04

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264269, B29C 6304, B29C 6570

Patent

active

054035333

ABSTRACT:
A measuring tube for a flowmeter and a process for making the measuring tube. The measuring tube is lined with a tubular lining of thermoplastic material, particularly PTFE or PFA, which comes into contact with the measured substance which flows through the tube. The ends of the tubular lining are flanged around end flanges of the measuring tube after the ends of the tubular lining have been plasticised by heating. The plasticised ends of the tubular lining are turned outward by more than 90.degree. and then forced into undercuts in the end faces of the end flanges. Upon cooling, the ends of the lining are in intimate contact with the end faces of the end flanges and the undercuts in the end faces.

REFERENCES:
patent: 3047937 (1962-08-01), de Vecchi
patent: 3435853 (1969-04-01), Weeden et al.
patent: 3959424 (1976-05-01), Dawson et al.
patent: 4124675 (1978-11-01), McFarlane
patent: 4191305 (1980-03-01), Davis
patent: 4198365 (1980-04-01), Pelton
patent: 5094795 (1992-03-01), McMillan et al.
patent: 5105524 (1992-04-01), Darling

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