Adhesive film
AssigneeSumitomo Chemical Company, Limited
InventorsAtsuko Ogawa, Akihiro Ichige, Hidetake Hozumi
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Abstract
There is provided an adhesive film comprising: (i) a substrate layer, which comprises a thermoplastic resin, and (ii) an adhesive layer, which comprises an olefin copolymer, wherein the olefin copolymer comprises polymerization units of at least two olefins selected from the group consisting of ethylene and α-olefins having 3 to 20 carbon atoms, and the olefin copolymer satisfies the requirements: (a) the olefin copolymer has neither a peak of crystal melting calorie of not less than 1 J/g, nor a peak of crystallization calorie of not less than 1 J/g in a differential scanning calorimetry according to JIS K 7122, and (b) a molecular weight distribution of the olefin copolymer, Mw/Mn, is not more than 3.
Claims7
An adhesive film comprising:
- (i) a substrate layer, which comprises a thermoplastic resin, and
- (ii) an adhesive layer, which comprises an olefin copolymer, wherein the olefin copolymer comprises polymerization units of at least two olefins selected from the group consisting of ethylene and α-olefins having 3 to 20 carbon atoms, and the olefin copolymer satisfies the requirements:
- (a) the olefin copolymer has neither a peak of crystal melting calorie of not less than 1 J/g, nor a peak of crystallization calorie of not less than 1 J/g in a differential scanning calorimetry according to JIS K 7122, and
- (b) a molecular weight distribution of the olefin copolymer, Mw/Mn, is not more than 3.
Dependencies are inferred from the claim text.