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Process for the manufacture of polymer and composite products

  • US 6,495,091 B1
  • Filed: 11/18/1997
  • Issued: 12/17/2002
  • Est. Priority Date: 05/18/1995
  • Status: Expired due to Term
First Claim
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1. Process for an integrated manufacture of a composite product comprising an in-situ final forming of at least one composite preform at a location of the moulding operation in an integrated moulding operation, wherein said composite preform comprises a reinforcing material and a first matrix material, said process comprising a first step of impregnating said reinforcing material by said first matrix material, a second step of pre-consolidating said reinforcing material impregnated by said first matrix material, said process comprising a third step of in-situ final placement of said reinforcing material impregnated by said first matrix material into said location, thereby forming said pre-consolidated composite preform, wherein said in-situ placement is performed through heated means that maintain said reinforcing material impregnated by said first matrix material at an elevated temperature, and wherein said integrated moulding operation comprises a step of material integration by further providing a second thermoplastic matrix material in a melted state at said location to at least partially enclose and bond to said pre-consolidated composite preform, said second melted matrix material being used as a pressure media providing heat and a consolidation pressure within said location for both an in-situ final consolidation of said composite preform and for moulding and final consolidation of the composite product and wherein said first step, said second step, said in-situ placement and said moulding operation are performed within one uninterrupted fabrication cycle.

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