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Paintable seal system

  • US 6,620,501 B1
  • Filed: 08/06/2001
  • Issued: 09/16/2003
  • Est. Priority Date: 08/07/2000
  • Status: Active Grant
First Claim
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1. A multilayer seal adapted for placement on the paintable surface of a substrate comprising:

  • (a) an adhesion portion that softens and flows when heated to temperatures typically encountered in automotive priming and painting operations; and

    (b) a barrier portion substantially retaining said adhesion portion within the surface of the substrate when said seal is heated to temperatures typically encountered in automotive priming and painting operations, wherein said barrier portion includes a crystalline layer located substantially between a first amorphous layer and a second amorphous layer wherein;

    i) both the first amorphous layer and the second amorphous layer are at least partially formed of a polyethylene terephthalate material; and

    ii) both the first amorphous layer and the second amorphous layer have a thickness that is about one eighth of the thickness of the crystalline layer and the crystalline layer is about two thirds of the entire barrier portion.

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