| 摘要 |
PROBLEM TO BE SOLVED: To obtain a hot-melt adhesive comprising an ethylene-based copolymer and a tackifying resin, free from any styrene-based copolymer, having a specific range of shear storage modulus, and causing no lowering of its melt viscosity and no deterioration of its coatability even after heated for a long time. SOLUTION: This hot-melt adhesive, which is suitable for bonding polyolefin materials, comprises an ethylene-based copolymer such as an ethylene-vinyl acetate copolymer and a tackifying resin such as a coumaron resin or coumaron- indene resin, contains no styrene-based copolymer, and has the shear storage modulus of the adhesive sheet made thereof of 1×10<6> to 5×10<7> Pa determined at 0 deg.C and a frequency of 14Hz using a shear viscoelastic spectrometer.
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