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US 4,592,719 AGranted
Apparatus for manufacturing plastic bottles from molded hollow preforms
AssigneeSociete de Machines pour la Transformation des Plastiques
InventorsPierre Bellehache, Paul La Barre
Life of this patent
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Abstract
Upon leaving the mold, plastic bottle preforms are engaged internally and/or externally by pneumatic suction grips which form an annular chamber (15, 27) through which atmospheric cooling air is circulated. This increases the rate of production of the preforms by cooling them during handling, rather than separately at a discrete cooling station.
Claims9
An apparatus for the manufacture of hollow, molded, cylindrical plastic preforms closed at one end, for subsequent expansion to form bottles, characterized by:
- (a) separate interior and exterior cylindrical pneumatic suction grips for engaging hot preforms and removing and transporting them away from a mold, said suction grips forming annular chambers with interior and exterior surfaces of the preforms, and
- (b) means for circulating air through said chambers to cool the preforms simultaneously with their removal and transportation away from the mold.
Dependencies are inferred from the claim text.