B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/703
B29C 45/74 (2006.01) B29C 45/00 (2006.01) B29C 45/30 (2006.01) B29C 45/56 (2006.01)
Patent
CA 2000162
The method is used to process a synthetic moulding compound which crystallizes within a specific temperature range. In order to prevent milkiness in the blank to be produced, the moulding compound is chilled. The method according to the invention prevents such milkiness, at least in the gate area of the blank, by keeping all of the moulding compound, during the operating cycle, as far as the gate area, at a temperature which is above the temperature T CC below which the moulding compound begins to crystallize. A gate system, which may be used to carry out the method according to the invention, comprises, in the interior of the injection nozzle, a strongly heat conducting nozzle core, a strongly heat conducting area in the immediate vicinity of the gate opening, and a gap for heat insulation of the nozzle tip, the nozzle core and the moulded body.
Fernandez Luis
Hofstetter Otto
Otto Hofstetter Ag
Ridout & Maybee Llp
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