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Plastic laminate repair

  • US 4,948,443 A
  • Filed: 02/22/1989
  • Issued: 08/14/1990
  • Est. Priority Date: 02/22/1989
  • Status: Expired due to Term
First Claim
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1. A process for restoring plastic laminate structures having unwanted void areas in the surface thereof comprising the steps of:

  • cleaning the void areas preparatory to their filling;

    thereafter filling the void areas with patch materials; and

    applying protective topcoatings to the exposed surface of the fillings,wherein said cleaning comprises removing loose and adventitious material from said voids, andwherein said patch materials comprise (1) a member selected from the group consisting of vinyl acetate/acrylic copolymers, vinyl acetate homopolymers, and mixtures of vinyl acetate/acrylic copolymers with said vinyl acetate homopolymers, together with (2) inert mineral powders, and (3) color pigments; and

    wherein further, said topcoatings are polyurethane polymers.

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