| 摘要 |
A dicing-sheet substrate film (2) equipped with a resin layer (A), wherein: the resin layer (A) contains a polyethylene (a1) having a density of 0.900g/cm3 or higher, and a styrene elastomer (a2); and the amount of the polyethylene (a1) contained represents 50-90 mass%, inclusive, of the total resin component contained in the resin layer (A), while the amount of the styrene elastomer (a2) contained represents 10-50 mass%, inclusive, of the total resin component contained in the resin layer (A). The dicing-sheet substrate film (2) does not require imparting physical energy such as electron rays or γ-rays thereto, suppresses the production of dicing scraps produced when dicing the article to be cut, and has sufficient expandability during the expansion step. |
