B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/683
B29C 45/16 (2006.01) B29C 49/22 (2006.01)
Patent
CA 2006794
A plastic preform from which a plastic container is blow molded. The preform replaces a three layer preform by providing a preform which is of a five layer construction in the base forming portion thereof and wherein a secondary material which forms the core layer of the three layer preform construction is divided into an inner intermediate layer and an outer intermediate layer by a third injection of material. The third injected material is preferably the same material as the primary material which is first injected. This results in the reduction of the cost of the preform and also provides remaining in the injection nozzle a quantity of the last injected material which is the same as the first injected material for the following preform in the same preform injection mold cavity.
Collette Wayne N.
Krishnakumar Suppayan M.
Nahill Thomas E.
Schmidt Steven Lyle
Collette Wayne N.
Continental Pet Technologies Inc.
Krishnakumar Suppayan M.
Nahill Thomas E.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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