CPC D21H 11/20 (2013.01) [C08J 7/043 (2020.01); C08J 7/048 (2020.01); D21H 17/36 (2013.01); D21H 19/56 (2013.01); D21H 21/14 (2013.01); D21H 27/16 (2013.01); D21H 27/18 (2013.01); D21H 27/36 (2013.01); C08J 2301/10 (2013.01); C08J 2423/06 (2013.01)] | 21 Claims |
1. A gas barrier film for a paper or paperboard based packaging material, said gas barrier film comprising:
a microfibrillated cellulose layer (MFC layer), at least one surface of which has been grafted with a fatty acid halide; and
a polymer layer disposed on the at least one surface of the MFC layer which has been grafted with a fatty acid halide.
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