Process and device for the manufacture of a tube bend of a therm

Details Process and device for the manufacture of a tube bend of a therm Process and device for the manufacture of a tube bend of a therm

1978-10-13

1980-04-08

Arnold, Donald J.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Rod or tubular preform

425403, A01J 2100

Patent

active

041970799

ABSTRACT:
Crinkle-free tube bends can be produced by introducing a flexible core into the straight tube length to be bent, bending the tube length around movable templates at the optimum thermoforming temperature and, while bending, laying an extensible insert between the tube length and the bending template.

REFERENCES:
patent: 2431851 (1947-12-01), Warden
patent: 4080141 (1978-03-01), Usui

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