| abstract |
There is provided an adhesive film comprising: n (i) a substrate layer, which comprises a thermoplastic resin, and n (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: n (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 n (b) a molecular weight distribution of the olefin copolymer, Mw/Mn, is not more than 3. |