Method for manufacturing a bellows

Details Method for manufacturing a bellows Method for manufacturing a bellows

1997-06-26

1999-06-08

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

264139, 264274, 264161, 264267, 4251291, B29C 5902

Patent

active

059102780

ABSTRACT:
A tubular hollow molded body is formed with a resin having a bending resistance; the hollow molded body is inserted into a mold; a resin with less stress relaxation is injected into both ends of the hollow molded body through a connecting path to mold a bellows intermediate; the resin moved into the connecting path of the bellows intermediate is removed; and a cut is put in the hollow molded body to mold a bellows portion.

REFERENCES:
patent: 2341556 (1944-02-01), Joy
patent: 3407102 (1968-10-01), Wilkinson
Tschacher: "Faltenbalge aus PTFE", In: Gumi, Asbest, Kunststoffe, Jun. 1967, S. 660, 662.

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