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US 8,551,279 B2Granted
Multilayer articles and methods of making and using the same
Assignee3M Innovative Properties Company
InventorsMichael A. Johnson, Frank A. Brandys, Kent E. Nielsen, Charlie C. Ho, Vijay Rajamani
Life of this patent
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Abstract
Multilayer articles comprising a thermoformable substrate, a base layer and an optional transparent protective layer. Methods of making and paint film composites, and shaped articles made thereby, are also disclosed.
Claims3
A method of making a multilayer article, the method comprising:
- providing a first forming web and a base layer releasably adhered to the first forming web, the base layer comprising a first polymeric material, and the base layer having a first major surface and a second major surface opposite its first major surface;
- contacting a curable composition with the base layer and a second forming web to form a rolling bank of the curable composition disposed between the base layer and the second forming web, the curable composition comprising a curable polymeric material precursor;
- passing at least a portion of each of the first forming web, the base layer, the second forming web, and the curable composition through a nip to provide a curable layer precursor while said at least a portion of the curable composition is sandwiched between the base layer and the second forming web;
- at least partially curing the curable layer precursor to provide a transparent protective layer comprising a second polymeric material, at least one of the first polymeric material and the second polymeric material comprising a polyurethane, the polyurethane having hard segments in an amount of from 35 to 65 percent by weight;
- separating the first forming web from the base layer;
- disposing a first adhesive layer on the first major surface of base layer;
- providing a thermoformable substrate having a first major surface and a second major surface opposite its first major surface;
- and
- permanently adhering the first adhesive layer to the second major surface of the thermoformable substrate.
6 more elements
Dependencies are inferred from the claim text.