| 摘要 |
PROBLEM TO BE SOLVED: To provide a base film for dicing and a dicing film, which restore their shapes by removing film tensions in the expansion process without heating thereof. SOLUTION: The multi-layer base film for dicing contains layers A, D, B, D, and C laminated in this order wherein each of the layers A and C contains a resin composition comprising 30-60 wt.% of hydrogenated vinyl aromatic hydrocarbon - conjugated diene hydrocarbon copolymer and 40-70 wt.% of polypropylene resin, the layer B contains a resin composition comprising 70-90 wt.% of amorphous olefin and 10-30 wt.% of polypropylene resin, and the layer D contains a resin composition comprising 40-90 wt.% of hydrogenated vinyl aromatic hydrocarbon -conjugated diene hydrocarbon copolymer and 10-60 wt.% of polypropylene resin. COPYRIGHT: (C)2009,JPO&INPIT
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