| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a base paper for release paper that has filling properties equivalent to a laminate layer of polyolefin based resin, exhibits stable peel force and is capable of being recycled as used paper. <P>SOLUTION: There is provided a release paper in which a coating layer for filling and a release layer are sequentially provided on one surface of a base paper comprising wood pulp as a main constituent, and which is used for an application to bond the one exhibiting less extension and contraction due to the humidity compared to the base paper. By providing a coating layer (hereinafter called as a backside layer) on the opposite surface to the release layer, when the release paper that is 20 mm in length direction and 210 mm in width direction is laid on a horizontal plane with the backside layer side above, is humidity-conditioned under an environment with 20% of relative humidity at 23°C for 10 hours, and then is kept under an environment with 80% of relative humidity at 23°C for 10 hours, a curl is generated such that both end parts are toward the backside layer side by 2 mm or more on average with respect to that at the time when relative humidity is 20%. <P>COPYRIGHT: (C)2013,JPO&INPIT |
