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US 8,541,097 B2Granted
Polyester laminated film and transfer foil
AssigneeToray Industries, Inc.
InventorsKenichi Yakushidoh, Kokichi Hashimoto, Masahiro Kimura
Life of this patent
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Abstract
A polyester laminated film includes at least a polyester layer, and a highly crystalline polyester layer including a highly crystalline polyester having a crystallinity parameter ΔTcg of 35° C. or lower, wherein both the polyester layer and the highly crystalline polyester layer have a planar orientation coefficient of 0.00 to 0.03.
Claims5
A polyester laminated film comprising:
- at least a polyester layer comprising a polyester, and
- a highly crystalline polyester layer comprising a highly crystalline polyester having a crystallinity parameter ΔTeg of 35° C. or lower,
- wherein both the polyester layer and the highly crystalline polyester layer have a planar orientation coefficient of 0.00 to 0.03, and
- the difference between a crystallization index of the polymer constituting the polyester layer and the crystallization index of the highly crystalline polyester is ≧4%, and wherein the laminated film has a tensile elongation at break at 80° C. of 500% or more and stress at 500% elongation is 10 to 50 MPa.
1 more element
Dependencies are inferred from the claim text.