Method for making a parison for blowmolding of a hollow article

Details Method for making a parison for blowmolding of a hollow article Method for making a parison for blowmolding of a hollow article

1981-12-30

1985-02-12

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Differential temperature conditioning

264530, 264532, 264533, 425525, B29C 1707

Patent

active

044990448

ABSTRACT:
The heated end of a parison is brought into a finish mold form to shape a finish profile suitable for setting up a closure. The parison is axially stretched by a stretch pin to pull out the heated plastic material adjacent the profile to a thinner cross section. This allows to obtain a considerable saving of weight of the plastic material.

REFERENCES:
patent: 3969060 (1976-07-01), Rosenkranz et al.
patent: 4065535 (1977-12-01), Legrand
patent: 4108937 (1978-08-01), Martineu et al.
patent: 4119394 (1978-10-01), Cary
patent: 4317793 (1982-03-01), Hubert et al.

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