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Apparatus and Method for Preform Relaxation and Flow Control in Liquid Composite Molding Processes

  • US 20100072677A1
  • Filed: 08/13/2009
  • Published: 03/25/2010
  • Est. Priority Date: 08/13/2008
  • Status: Active Grant
First Claim
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1. A vacuum-induced injection molding apparatus comprising:

  • a tool surface having an injection port extending therethrough;

    a flexible film extending over a preform and sealingly coupled to the tool surface, wherein the flexible film comprises an outer surface and an inner surface such that the flexible film inner surface and the tool surface define a volume;

    a vacuum chamber sealingly coupled to the outer surface of the flexible film; and

    a vacuum port in fluid communication with the volume.

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