Thermoplastic resin film and production method thereof, in-mold molding label, and plastic container with label and production method thereof
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United States of America Patent
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Jul 21, 2020
Grant Date -
Feb 8, 2018
app pub date -
Feb 12, 2016
filing date -
Feb 16, 2015
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Abstract
A thermoplastic resin film of the present invention contains at least a base layer containing a thermoplastic resin and a heat seal layer containing a thermoplastic resin; a melting point of the thermoplastic resin contained in the heat seal layer is lower than a melting point of the thermoplastic resin of the base layer; a core roughness depth Rk of a surface of the heat seal layer being from 1.2 to 9.0 μm; and a ratio Rzjis/Rk of a ten point height of roughness profile Rzjis to a core roughness depth Rk of the surface of the heat seal layer measured in accordance with JIS B0601:2013 Appendix 1 being from 2.0 to 9.0.
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