B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/682
B29C 49/16 (2006.01) B29C 45/16 (2006.01)
Patent
CA 2008266
ABSTRACT A method of and apparatus for forming multiple layer preforms wherein the various layers may be varied as to number, material, thickness and position in the preform by controlling the injection of the specific materials as to timing, quantity and rate of delivery. Most specifically, a featured aspect is the ability to simultaneously deliver to an injection nozzle and through such injection nozzle into a preform mold cavity two or more molten plastic materials simultaneously. This is possible by way of a multiple gate nozzle and a plurality of separately operable metering pots all controlled by way of timing device. The timing device may also control the rate of the dispensing an individual material from each of the metering pots.
Collette Wayne N.
Krishnakumar Suppayan M.
Nahill Thomas E.
Collette Wayne N.
Continental Pet Technologies Inc.
Krishnakumar Suppayan M.
Nahill Thomas E.
Swabey Ogilvy Renault
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