Process and device for injection-molding plastics
First Claim
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1. A process for the injection-molding of plastic material consisting essentially in:
- initially introducing the material charge into a mold having a plurality of entry gates through less than all of said gates, and subsequently introducing the material through at least one additional entry gate only after said flow front has passed said additional gate.
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Abstract
Process and device for injection molding plastics. The injection material charge is introduced into the mold to obtain an uninterrupted flow front by initially injecting the material into the mold through at least one first gate and through a subsequent gate or gates only after the flow front passes the subsequent gate(s). An injection molding device having separately and variously controllable valves located in the supply lines interconnecting an injection molding apparatus, mold and gates.
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Citations
4 Claims
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1. A process for the injection-molding of plastic material consisting essentially in:
initially introducing the material charge into a mold having a plurality of entry gates through less than all of said gates, and subsequently introducing the material through at least one additional entry gate only after said flow front has passed said additional gate. - View Dependent Claims (2, 3, 4)
Specification