Injection blow molding with improved cooling

Details Injection blow molding with improved cooling Injection blow molding with improved cooling

Filed on

1975-07-07

Date issued

1977-04-19

Examiner

Silbaugh, Jan H.

Patent Class

Plastic and nonmetallic article shaping or treating: processes

SubClass

With step of cleaning, polishing, or preconditioning...

Other Related Categories

264 97, 264327, B29C 1707

Type

Patent

Status

active

Patent number

040188604

Description

ABSTRACT:
This invention cools the blowing mold and the plastic article blown therein to shorten the time that a core rod must remain at a blowing station of a blow molding machine for making plastic articles. The cooling is performed by conditioned air that is dried to lower its dew point. An air curtain is used to prevent other air from contacting with and depositing moisture on the mold. In order to take advantage of the shorter time at the blowing station, an auxiliary injection device is used to also shorten the time required for the injection operation; and auxiliary cooling is supplied to the core rod at the stripper station.

REFERENCES:
patent: 3078508 (1963-02-01), Martin, Jr.
patent: 3233416 (1966-02-01), Rainwater et al.
patent: 3321564 (1967-05-01), Dobbins et al.
patent: 3665063 (1972-05-01), Rupert et al.
patent: 3707591 (1972-12-01), Chalfant
patent: 3709644 (1973-01-01), Farrell
patent: 3789093 (1974-01-01), Bose

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