An adhesive sheet for dicing comprising a base film provided at least one surface thereof with an adhesive layer, wherein the base film comprises an olefinic thermoplastic elastomer comprising propylene and ethylene and/or &agr;-olefin including 4 to 8 carbon atoms as polymerization components, and the peak melting temperature of the olefinic thermoplastic elastomer is 120° C. or more, is free of economical disadvantages with less reduction in the quality level of products and less generation of fibrous off-cuts during dicing. In particular, fibrous off-cuts occur less during dicing when the base film contains a crystal-nucleating agent. Further, generation of chippings during dicing can be prevented by incorporation of an ethylene series polymer into the base film.
一种用于切割的粘合片,包括至少一表面带有粘合层的基膜,其中基膜包括
丙烯和
乙烯和/或α-烯烃(4-8个碳原子)作为聚合组分的烯烃热塑性弹性体,且烯烃热塑性弹性体的峰值熔点为120℃或更高,不会产生经济上的不利影响,同时产品质量
水平降低和切割过程中纤维碎屑的生成较少。特别是,在基膜中含有结晶成核剂时,切割过程中的纤维碎屑会更少。此外,通过将
乙烯系聚合物并入基膜中,可以防止切割过程中产生切屑。