Preform preheater

Details Preform preheater Preform preheater

B - Operations, Transporting

29

C

B29C 49/64 (2006.01) B29C 35/08 (2006.01) B29C 35/16 (2006.01) B29C 49/06 (2006.01)

Patent

CA 2417518

Pre-heating apparatus for pre-heating a selected portion of each of a series of preforms to achieve a persistent thermal gradient prior to re- heating and blow-molding the preform. The pre-heating apparatus is adjustably mounted to a gravitational slide that transports the series of preforms downward under the influence of gravity through the preheating apparatus toward a reheat blow molding machine. The pre-heating apparatus includes a housing coupled to the slide so that the selected portion of each of the series of preforms is shielded from the general environment, and heating elements fixed within the housing so that heat from the heating elements is directed toward the selected portion of each of the series of preforms as the preforms descend down the gravitational slide.

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