Method for making a painted part and part made thereby
First Claim
Patent Images
1. A method of making a reinforced painted plastic part comprising:
- providing a relatively large plastic part with interior and exterior surfaces;
providing a reinforcement member;
applying a thermally conductive material so that it is sandwiched between the interior surface of the plastic part and the reinforcement member;
bonding the reinforcement member to the interior surface;
applying paint to the part;
heating the part to dry the applied paint; and
using the thermally conductive material to evenly distribute the heat to avoid paint blemishes in the area of the reinforcement member thereby providing an aesthetically pleasing painted surface for the part.
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Accused Products
Abstract
Surface imperfections on painted fiber reinforced plastic (FRP) automotive body panels are substantially eliminated by incorporating thermally conductive material into the part that serves to minimize temperature differentials on the surface of the part to be painted.
37 Citations
11 Claims
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1. A method of making a reinforced painted plastic part comprising:
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providing a relatively large plastic part with interior and exterior surfaces; providing a reinforcement member; applying a thermally conductive material so that it is sandwiched between the interior surface of the plastic part and the reinforcement member; bonding the reinforcement member to the interior surface; applying paint to the part; heating the part to dry the applied paint; and using the thermally conductive material to evenly distribute the heat to avoid paint blemishes in the area of the reinforcement member thereby providing an aesthetically pleasing painted surface for the part. - View Dependent Claims (2, 3, 4, 5)
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6. A method of making a reinforced painted part, said method comprising:
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(a) providing a nonmetallic outer skin with exterior and interior surfaces; (b) providing a nonmetallic reinforcement member having a plurality of hat-shaped cross sections with inboard and outboard flanges; (c) positioning a substantially continuous metallic sheet between the skin and reinforcement member, said sheet being substantially coextensive with the interior surface of the skin except for marginal edges thereof which leave the outboard flanges uncovered; (d) bonding the outboard flanges of the reinforcement member to the outer skin with an adhesive in the area of the uncovered marginal edges; (e) applying metallic paint to the exterior surface of the skin; (f) heating the part to dry the paint in a convection oven at a temperature of at least 300°
Fahrenheit; and(g) using the metallic sheet to evenly distribute heat to avoid paint blemishes at areas of increased mass where the reinforcement member is next to the outer skin thereby providing an aesthetically pleasing surface for the part. - View Dependent Claims (7, 8, 9)
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10. A painted plastic exterior automotive body panel made by the method comprising:
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providing a relatively large plastic outer skin with an interior and exterior surface; providing a reinforcement member with inboard and outboard flanges; applying a thermally conductive metallic foil to the interior surface of the skin; bonding the reinforcement member to the outer skin such that the foil is sandwiched between at least the inboard flange and the skin; applying paint to the exterior surface of the skin; heating the paint in a convection oven at a temperature of at least 300°
Fahrenheit; andusing the foil to evenly distribute the heat to avoid paint blemishes at areas where the reinforcement member is next to the outer skin. - View Dependent Claims (11)
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Specification