LAMINATED FILM

WIPO Patent Application WO/2022/019192

A1

The purpose of the present invention is to provide a laminated film which has a polypropylene film as a main body and can form a laminate structure configured from nearly one type of resin having less environmental load and which has gas barrier properties or adhesion required for a packaging material. The laminated film has a surface layer (B) on one surface of a substrate layer (A) having a polypropylene-based resin as a main component and a surface layer (C) on the other surface of the substrate layer (A), and also has an inorganic thin film layer (D) laminated on the surface layer (B), the laminated film being characterized in that the haze of the laminated film is 5% or less and the surface of the laminated film, on the inorganic thin film layer (D) side, satisfies (I) to (IV) below: (I) the arithmetic mean roughness (Ra) measured by a scanning probe microscope is 4.5-9.0 nm; (II) the Martens hardness is 310 N/mm2 or less; (III) the water contact angle is 75 ° or less; and (IV) the mean roughness on the center surface (Sra) measured by a three dimensional roughness meter is 0.010-0.040 μm.

YAMAZAKI ATSUSHI (JP)
NAKANO MAHIRO (JP)
SUGIMORI KOICHI (JP)
KASHIWA MITSUHIRO (JP)

PCT/JP2021/026453

January 27, 2022

July 14, 2021

Click for automatic bibliography generation  

TOYO BOSEKI (JP)

B32B9/00; B32B27/32; B65D65/40

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

JP2006326925A	2006-12-07
JP2000052501A	2000-02-22
JPH04359033A	1992-12-11
JP2003231221A	2003-08-19
JP2000052501A	2000-02-22
JP2003231221A	2003-08-19

ZAMBELLI ET AL., MACROMOLECULES, no. 6, 1973, pages 925

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