BASE PAPER FOR PROCESS RELEASE PAPER, AND PROCESS RELEASE PAPER USING THE BASE PAPER

摘要

PROBLEM TO BE SOLVED: To provide a base paper for a process release paper to be used in producing a carbon fiber-reinforced resin material and excellent in dimensional stability to heat, and to provide a process release paper using the above base paper.;SOLUTION: The base paper for a process release paper is such that: at least one side of a substrate based on wood pulp is provided with one or more coating layers composed of an inorganic pigment and a binder. In the base paper, the fiber alignment ratio determined based on an ultrasonic wave transmission speedometer for the substrate is 1.20 or less, and the coating layer contains kaolin and a styrene-butadiene copolymer as major components. In the base paper, after heating the base paper at 150°C for 2 min, the lateral extension after 24 h at 23°C and RH 50% is 0.5% or less.;COPYRIGHT: (C)2010,JPO&INPIT