Japanese Patent JPWO2022019192

A1

An object is to provide a laminated film that is a film permitting formation of a laminate constitution constituted almost completely of a single type of resin having little environmental impact made up primarily of polypropylene film, and that has adhesive properties and gas barrier properties sought for packaging materials. Means for solving it relates to a laminated film comprising a surface layer (B) at a surface on one side of a substrate layer (A) comprising a polypropylenic resin as primary constituent, and a surface layer (C) at a surface on the other side of the substrate layer (A), and in which an inorganic thin film layer (D) is further laminated over the surface layer (B), the laminated film being characterized in that haze of the laminated film is not greater than 5%, and in that a surface on the inorganic thin film layer (D) side of the laminated film satisfies (I) through (IV), below; (I) arithmetic mean roughness (Ra) by a scanning probe microscope is not less than 4.5 nm -9.0 nm; (II) Martens hardness is not greater than 310 N/mm²; (III) water contact angle is not greater than 75°; and (IV) center plane average roughness (SRa) by a three-dimensional profilometer is not less than 0.010 µm - 0.040 µm.

JP2022537950A

January 27, 2022

July 14, 2021

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JP2004168040A	2004-06-17
JP2006326925A	2006-12-07
JP2000052501A	2000-02-22
JPH04359003A	1992-12-11
JP2003231221A	2003-08-19

WO2018142983A1	2018-08-09
WO2017221781A1	2017-12-28
WO2007094072A1	2007-08-23

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