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US 10,730,268 B2Granted
Decorative laminated sheet, structure including the decorative laminated sheet, and method of manufacturing the same
Assignee3M Innovative Properties Company
InventorKen Egashira
Life of this patent
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Abstract
A decorative laminated sheet with excellent scratch resistance that is capable of adhering to a polyolefin-based resin substrate, and that is a hardly adhesive material, through an extrusion method, a vacuum-pressure molding method, a mold integrated injection molding method, and the like. The decorative laminated sheet includes a surface layer, a design layer, and an adhesive layer containing a polymer having a propylene unit of 85 mass % or more, in that order.
Claims19
A method of manufacturing a structure, the method comprising the steps of:
- preparing a decorative laminated sheet comprising, in the following order:
- a surface layer having a thickness in the range of from 1 to 100 μm and comprising an acrylic resin, polyurethane, fluorine resin or polyvinyl chloride,
- a design layer, and
- an adhesive layer having a thickness in the range of from 15 to 1000 μm and containing either an unblended propylene homopolymer or a blend of propylene homopolymer and a rubbery copolymer, wherein the blend has approximately 95 mass % or more of propylene units, and
- the adhesive layer is configured of a material having a tensile modulus in the range of from approximately 350 N/mm2 to approximately 1000 N/mm2, the adhesive layer has a melting point of approximately 100° C. or more and the decorative laminated sheet has a pencil hardness of 2B or more, and either
- (a) applying the decorative laminated sheet to a substrate through vacuum-pressure molding, and forming a structure that integrates the decorative laminated sheet with the substrate, wherein the substrate comprises a polyolefin-based resin, or
- (b) extruding or injection molding in a mold a thermoplastic material on the decorative laminated sheet, and forming a structure that integrates the decorative laminated sheet and the thermoplastic material, wherein the thermoplastic material comprises a polyolefin-based resin.
4 more elements
Dependencies are inferred from the claim text.