Blow pin construction in a plastic bottle blow molding machine

Details Blow pin construction in a plastic bottle blow molding machine Blow pin construction in a plastic bottle blow molding machine

1979-06-19

1980-11-18

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Cutter guided by or cooperating with peripheral edge of...

264533, 425525, 425527, 425535, 425457, B29C 1707, B29C 1710

Patent

active

042342996

ABSTRACT:
A plastic bottle is formed by extruding a hot plastic parison around a blow pin within a two-part mold. The mold is closed and sealed and the parison is expanded by air pressure against the cooled internal wall of the mold. Each mold half at its top neck carries a sealing assembly which seals against the blow pin. The blow pin is cooled by the air pressure and has an elongated lower tubular portion with air holes which are slanted upwardly to form a selected blow air pattern to aid in forming the handle portion of the bottle.

REFERENCES:
patent: 3101901 (1963-08-01), Britten
patent: 3597793 (1971-08-01), Weiler et al.
patent: 4032278 (1977-06-01), Kuenzig et al.

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