Patent ID: 9315692
Filing Date: 2016-04-19
CPC Classification: C09J,H01L,Y10T

Claim Text:
1. A semiconductor wafer dicing sheet base material film having a surface configured to contact and to be laminated to a pressure-sensitive adhesive layer, the dicing sheet base material film comprising: a single layer of resin film or multiple layers of resin films, wherein at least the resin film configured to contact and be laminated to the pressure-sensitive adhesive layer is formed from a resin composition having a cross-linked structure and containing ethylene-(meth)acrylic acid copolymer as a main constituent and 0.3 to 17.0 parts by mass of an epoxy compound as a crosslinking agent based on 100 parts by mass of the ethylene-(meth)acrylic acid copolymer, the ethylene-(meth)acrylic acid copolymer excludes ethylene-ionomer copolymer, the number average molecular weight of the epoxy compound is 250 or more and 5,000 or less, and the semiconductor wafer dicing sheet base material film is configured to reduce generation of dust when attached to a semiconductor wafer during blade dicing of the semiconductor wafer.