Heat-treatment of thermoplastic tubular articles

Details Heat-treatment of thermoplastic tubular articles Heat-treatment of thermoplastic tubular articles

B - Operations, Transporting

29

D

18/50

B29D 23/00 (2006.01) B29C 71/02 (2006.01) B65B 3/02 (2006.01)

Patent

CA 1272008

ABSTRACT OF THE DISCLOSURE In a process for packaging a liquid or semi-liquid food or beverage in a container of oriented thermoplastics material with a head space above the product in the container, in which the container package is thermally processed at a temperature of 60° to 140°C to condition the product for storage, the material of the container body is previously heat-set to a temperature such that the thermal processing causes a volume shrinkage of 3% to 15%, and after cooling any pressure differential across the container body wall is insufficient to cause panelling.

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