Thermoplastic resin film and production method thereof, in-mold molding label, and plastic container with label and production method thereof
AssigneeYupo Corporation
InventorsYuichi Iwase, Shunsuke Honda, Takahiko Ueda
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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.
Claims16
A thermoplastic resin film comprising at least a base layer containing a thermoplastic resin and a heat seal layer containing a thermoplastic resin;
- the heat seal layer containing the thermoplastic resin having a melting point that 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 measured in accordance with ISO 13565-2:1996 being from 1.2 to 9.0 μm;
- and
- a ratio Rzjis/Rk of a ten point height of roughness profile of the surface of the heat seal layer 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.
Dependencies are inferred from the claim text.