Patent ID: 6444155
Filing Date: 2002-09-03
Classification: B29B,B29C,B29K

Abstract:
A method of fabricating an inner layer of a first polymer within a stretch blown container preform consisting of a second polymer, comprising the steps of:(a) heating a molding core rod; (b) rotating a coating depositor having a depositing slot therein around the core rod, and depositing thereon an inner layer of a first polymer while being in a molten state, said first polymer having predetermined barrier and/or inertness characteristic; (c) removing the depositor from the proximity of the core rod with the inner layer formed thereon; (d) inserting the core rod into an injection cavity mold; (e) cooling the core rod; and (f) feeding a second polymer into the injection mold and flowing the second polymer over the inner layer of said first polymer while the inner layer is still molten to form a preform having an inner layer of barrier material.