HOT-MELT ADHESIVE COMPOSITION AND BONDING METHOD USING THE SAME

PROBLEM TO BE SOLVED: To provide a hot-melt adhesive composition that contains plant-derived components of 60 mass% or more in the composition, and has high heat resistance and flexibility and has suitability for high-speed work, and a bonding method using the same.SOLUTION: A hot-melt adhesive composition contains ethylene copolymer A, plant-derived tackifier B with a softening point of at 80-130°C, and plant-derived natural wax C with a softening point of at 75-85°C. Relative to the total content of the components A, B, C, the content of ethylene copolymer A is 30-40 mass%, the total content of plant-derived tackifier B and plant-derived natural wax C is 60-70 mass%, and the content of plant-derived natural wax C is 15-30 mass%.SELECTED DRAWING: None 【課題】ホットメルト接着剤組成物中に植物由来からなる成分を６０質量％以上含有し、且つ高い耐熱性と柔軟性を有する高速作業性に適したホットメルト接着剤組成物とそれを用いた接着方法を提供する。【解決手段】エチレン系共重合体Ａ、軟化点が８０〜１３０℃である植物由来粘着付与剤Ｂ、および軟化点が７５〜８５℃である植物由来天然ワックスＣを含有し、前記成分Ａ、Ｂ、Ｃの合計量に対して、エチレン系共重合体Ａの含有量が３０〜４０質量％、植物由来粘着付与剤Ｂおよび植物由来天然ワックスＣの合計含有量が６０〜７０質量％、植物由来天然ワックスＣの含有量が１５〜３０質量％であるホットメルト接着剤組成物。【選択図】なし