Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including application of internal fluid pressure to hollow...
Patent
1992-07-31
1994-11-08
Timm, Catherine
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Including application of internal fluid pressure to hollow...
425534, B29C 4906
Patent
active
053624378
ABSTRACT:
The present invention provides a blow molding process having the steps of conveying preforms to a blow molding stage while holding the preform by two rows of supporting plates, placing the preforms in two rows of blowing molds disposed corresponding to the supporting plates, blow molding the preform into hollow containers when tile blowing molds are in their closed positions, thereafter opening the blowing molds to remove the molded containers therefrom. On carrying out this blow molding process, the row pitch between the supporting plates is changed between one when the blowing molds are opened and another when the blowing molds are in the other conditions. By utilizing this process and an apparatus for carrying out the process, the row pitch between the supporting plates is not required to maintain the maximum pitch when the blowing molds are opened. Thus, the blow molding system may be reduced in size and occupying area.
REFERENCES:
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patent: 3048890 (1962-08-01), Soubier
patent: 3819314 (1974-06-01), Marcus
patent: 4140464 (1979-02-01), Spurr et al.
patent: 4241009 (1980-12-01), Sokolow
patent: 4321029 (1982-03-01), Aoki
patent: 4370121 (1983-01-01), Valyi
patent: 4391578 (1983-07-01), Schaar
Nissei ASB Machine Co. Ltd.
Timm Catherine
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