Molding tool with blowing device

Details Molding tool with blowing device Molding tool with blowing device

1994-07-12

1995-09-26

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

Including blowing medium supply means

425536, B29C 4958

Patent

active

054530016

ABSTRACT:
A molding tool has a mold cavity provided with a recess with a blowing needle guiding seat. Located in the blowing needle guiding seat is a tapered hole in which the blowing needle is movably received to carry out the blowing process. The blowing needle is caused to descend so as to seal off the blow hole before the hollow object takes shape in the mold cavity. The hollow object so formed is therefore devoid of a blow hole.

REFERENCES:
patent: 4277232 (1981-07-01), Taluba et al.
patent: 4699585 (1987-10-01), Giese et al.
patent: 4954071 (1990-09-01), Austin
patent: 5041247 (1991-08-01), Kim
patent: 5085822 (1992-02-01), Uehara et al.
patent: 5364252 (1994-11-01), Hlavaty et al.

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