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US 7,744,715 B2Granted
Fluororesin laminated film and method for producing same
AssigneeMitsubishi Plastics, Inc.
InventorYoshihiko Nishio
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Abstract
A method for producing a fluororesin-laminated film comprising the steps of co-extruding a fluororesin layer (1) and a resin layer (2) which can be peeled off from the fluororesin layer (1), and extrusion-laminating the co-extruded layers on at least one side of a drawn polyethylene terephthalate film while the co-extruded fluororesin layer (1) facing to the drawn polyethylene terephthalate.
Claims12
A method for producing a fluororesin-laminated film comprising:
- co-extruding a fluororesin layer having a thickness of from 2 μm to 10 μm that comprises tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer (THV) and a resin layer that can be peeled off from the fluororesin layer, and
- extrusion-laminating the co-extruded layers on at least one side of a drawn polyethylene terephthalate film with the co-extruded fluororesin layer facing the drawn polyethylene terephthalate film so that an adhesion strength between the fluororesin layer and the drawn polyethylene terephthalate film, as determined in accordance with a 180-degree peeling test specified in the Japanese Industrial Standards Z-0237 at a pulling rate of 5 mm/min, is 4 N/cm or larger.
Dependencies are inferred from the claim text.