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US 8,263,213 B2Granted
Painted composite thermoplastic articles
AssigneeE. I. Du Pont de Nemours and Company
InventorsAndri E. Elia, Toshikazu Kobayashi, William Daniel Saunders
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Abstract
Painted composite articles having good mechanical properties and smooth surface appearance comprising a reinforced thermoplastic polymeric components, a film, and a coating.
Claims16
A molded article comprising a thermoplastic polymer composition, said molded article prepared by a process comprising the following steps:
- (a) placing a thermoplastic polymeric film of about 8 mils to about 20 mils thickness comprising at least one polyester or polyamide having first and second surfaces opposite to each other into a mold;
- (b) overmolding onto the first surface of the thermoplastic polymeric film a thermoplastic polymeric composition comprising from about 20 to about 60 percent by weight of at least one thermoplastic polymer and from about 40 to about 80 percent by weight of at least one reinforcing agent;
- (c) coating the second surface of the thermoplastic polymeric film with a coating having a total dry film build of 68 μm to 85 μm to provide a molded article;
- wherein the reinforcing agent has a fiber length of 2 mm to 7 mm after overmolding;
- wherein the surface of the coating on the thermoplastic polymer film of the molded article has a Wb value of 30 or less as measured by a BYK-Gardner wave scan DOI instrument;
- and
- wherein the thermoplastic polymeric composition having a tensile modulus of at least about 11 GPa, as measured by ISO method 527-2:1993 at a rate of 5 mm/min on test specimens having a thickness of 4 mm;
- a notched Charpy impact strength of at least about 35 kJ/m2, as measured by ISO method 179-1:2000.
5 more elements
Dependencies are inferred from the claim text.