SURFACE-PROTECTION FILM, MANUFACTURING METHOD THEREFOR, BASE FILM FOR A SURFACE-PROTECTION FILM, AND MANUFACTURING METHOD THEREFOR
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United States of America Patent
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Issued Date -
Nov 22, 2012
app pub date -
Dec 24, 2010
filing date -
Jan 18, 2010
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Abandoned
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Abstract
A surface protective film includes a base layer having polyolefin as a main component and an adhesion layer. The surface protective film and a base film for the surface protective film are thermally treated at a temperature from 40 degrees C. to 100 degrees C. for 1 second to 120 seconds and a size change ratio at which each of the surface protective film and the base film changes in size after being heated at 90 degrees C. for one hour falls within ±0.50% in each of MD (a machine direction) and TD (a traverse direction). Generation of curling is prevented and a surface of a target member is protected without damaging properties or performance of the target member.
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