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US 4,355,968 AGranted
Apparatus for producing hollow plastic bottles by thermal heating and blow mold expansion
AssigneePont-A-Mousson S.A.
InventorsSerge Lagoutte, Alain G. Franchet
Life of this patent
Estimating the term…
Abstract
Plastic bottle blanks (1) are rotated and conveyed neck down through a rotary thermal heating station (3), and neck up to a transfer station (5) and through a blow molding station (4), thus making it possible to simultaneously hold the blanks by their necks during the entire treatment and to easily remove the finished hollow bottles by gravity.
Claims11
An installation for manufacturing hollow bodies, such as bottles, by thermally treating and then blow molding cylindrical blanks (1) made of a plastic material with one extremity closed and one extremity open forming a neck, said installation comprising:
- (a) a thermal treatment station (3) including a turntable (9), a stationary table (32) surrounding said turntable, a plurality of heating devices (33) mounted around a peripheral portion of said stationary table, a plurality of blank support devices (15) mounted on the turntable and rotatable therewith in close proximity to said heating devices, and means for inverting said blank support devices when entering and leaving said peripheral portion of the stationary table mounting said heating devices such that blanks carried by said support devices have their neck openings directed upwardly outside said peripheral portion and downwardly inside said portion,
- (b) a station (2, 2a) for individually supplying blanks to said support devices,
- (c) a blow molding station (4), and
- (d) a station (5) for transferring blanks from said support devices after leaving said peripheral portion to said blow molding station.
1 more element
Dependencies are inferred from the claim text.