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Process for the manufacture of a substantially wrinkle-free non-planar laminate and pre-laminate

  • US 4,973,364 A
  • Filed: 01/23/1989
  • Issued: 11/27/1990
  • Est. Priority Date: 01/27/1988
  • Status: Expired due to Term
First Claim
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1. A process for the manufacture of a substantially wrinkle-free, non-planar pre-laminate comprising:

  • (i) placing a heat-shrinkable, thermoplastic film over a negative-image mold of a non-planar article;

    (ii) conforming said film to the shape of said mold by heating said film to a temperature above its glass transition temperature while maintaining said film under dimensional restraint, thereby forming conformed film;

    (iii) placing an adhesive layer over said conformed film;

    (iv) conforming said adhesive layer to the shape of said conformed film by heating said adhesive layer under pressure, thereby forming a two layer pre-laminate.

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