DICING SHEET BASE FILM AND DICING SHEET
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United States of America Patent
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Issued Date -
Dec 3, 2015
app pub date -
Oct 9, 2013
filing date -
Dec 28, 2012
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Abstract
A dicing sheet base film includes a resin layer (A). The resin layer (A) contains: a norbornene-based resin (a1) that is a thermoplastic resin containing a structural unit derived from a norbornene-based compound; a styrene-based elastomer (a2); and an olefin-based thermoplastic resin (a3) other than the norbornene-based resin (a1) and other than the styrene-based elastomer (a2). The dicing sheet base film suppresses the occurrence of dicing debris, in particular filament-like dicing debris, during the dicing of a cut object without imparting physical energy such as electron rays and γ rays, and has sufficient expandability in the expanding process.
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