Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1996-03-28
1999-11-16
Silbaugh, Jan H.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
15624424, 15624427, 264129, B29C 4706
Patent
active
059850795
ABSTRACT:
A flexible composite surfacing film for providing a substrate with desired surface characteristics is disclosed. The film comprises a flexible temporary carrier film and a flexible transparent outer polymer clear coat layer releasably bonded to the temporary carrier film, the flexible outer polymer layer comprising an extruded thermoplastic polymer having a M.sub.w /M.sub.n ratio of 4 or lower. A pigmented base coat layer is adhered to said outer clear coat layer and is visible therethrough, and a thermoformable backing layer is adhered to the pigmented base coat layer. The film is produced by extruding a molten transparent thermoplastic polymer and applying the polymer to a flexible temporary carrier thereby forming a continuous thin transparent film. A pigmented thermoplastic polymer in a volatile liquid vehicle is applied to the exposed surface of the transparent film while the film is bonded to the flexible temporary carrier, thus forming thereon a coating of the pigmented thermoplastic polymer overlying the transparent thermoplastic polymer film. The thus formed composite may then be heated while the transparent thermoplastic polymer film is bonded to the flexible temporary carrier to evaporate the volatile liquid vehicle and form a pigmented polymer layer. The heating step also molecularly relaxes the underlying film of transparent thermoplastic polymer to relieve any molecular orientation caused by the extrusion.
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Eashoo Mark
Rexam Industries Corp.
Silbaugh Jan H.
LandOfFree
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