Apparatus for pre-heating thermoplastic parisons

Details Apparatus for pre-heating thermoplastic parisons Apparatus for pre-heating thermoplastic parisons

B - Operations, Transporting

29

C

18/538

B29C 49/68 (2006.01) B29C 49/42 (2006.01)

Patent

CA 1142720

TITLE APPARATUS FOR PRE-HEATING THERMOPLASTIC PARISONS ABSTRACT OF THE INVENTION This invention relates to an apparatus for effecting the uniform pre-heating of thermoplastic parisons of the type that are introduced into a blow molding machine for fabrication into a blow molded article. The invention provides a hopper which is intermittently supplied with batches of parisons and through which the parisons move by gravity. A convection heating zone is provided in the hopper to uniformly heat each parison passing therethrough, and a temperature equalization zone is provided adjacent to the heating zone. The parisons are removed from the temperature equalization zone by a continuously moving parison conveyor which forms part of the temperature equalization zone.

353110

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