Title:
BIAXIALLY STRETCHED POLYAMIDE FILM AND LAMINATE FILM
Document Type and Number:
WIPO Patent Application WO/2022/196738
Kind Code:
A1
Abstract:
The present invention provides a biaxially stretched polyamide film in which an A-layer includes 50-90 mass% of polyamide 6 and 10-50 mass% of a polyamide 6 copolymer, a B-layer includes 5-30 mass% of polyamide 6, 70-95 mass% of a polyamide 6 copolymer, and 0-0.10 mass% of an organic lubricant, a C-layer includes 70 mass% or more of polyamide 6 and 0.05-1 mass% of fine particles having an average particle diameter of 0.1-10 µm, the layers are configured in the order B-layer, A-layer, C-layer, the critical surface tension in the surface of the B-layer is 27.0 mN/m or greater, the dispersion component γd of the surface free energy in the surface of the B-layer is 27.0 mJ/m2 or greater, and the hydrogen bond component γh of said surface free energy is 10.0 mJ/m2 or less.
Inventors:
GOTO TAKAMICHI (JP)
ENDO TAKURO (JP)
ENDO TAKURO (JP)
Application Number:
PCT/JP2022/012054
Publication Date:
September 22, 2022
Filing Date:
March 16, 2022
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B32B27/18; B32B27/34; B65D65/40
Domestic Patent References:
| WO2020195795A1 | 2020-10-01 | |||
| WO2002016133A1 | 2002-02-28 | |||
| WO2019065161A1 | 2019-04-04 | |||
| WO2020195795A1 | 2020-10-01 |
Foreign References:
| JP2003071937A | 2003-03-12 | |||
| JP2002029014A | 2002-01-29 | |||
| JP2002103446A | 2002-04-09 | |||
| JP2000309076A | 2000-11-07 | |||
| JP2000238216A | 2000-09-05 | |||
| JP2003251772A | 2003-09-09 |
Other References:
YASUAKI KITAZAKI ET AL., JOURNAL OF THE ADHESION SOCIETY, vol. 8, no. 3, 1972, pages 131 - 141
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