Ceramic sheet production for release film roll, ceramic sheet production for release film laminate roll, and method of manufacturing the ceramic sheet

摘要

PROBLEM TO BE SOLVED: To provide a release film roll for suppressing the positional shift of an internal electrode in the manufacturing of a laminated ceramic condenser having excellent releasability of a ceramic sheet and smoothness of a release layer face, a film laminate, and a ceramic sheet manufacturing method.;SOLUTION: The release film roll for manufacturing the ceramic sheet has the release layer on at least one surface thereof and the dimensional change ratios in the longitudinal and width directions of the release film, at the time when a tension of 4.7 MPa is applied to the release film in the longitudinal direction and the release film is heat-treated at 100°C for 5 min, satisfy formula (1) : |ΔL_TD-ΔL_MD| ≤ 0.8 and formula (2) : -0.6 ≤ΔL_MD≤ 0.6 (wherein ΔL_MD is a dimensional change ratio (%) in the longitudinal direction of the film and ΔL_TD is the dimensional change ratio (%) in the width direction of the film), the surface roughness of the release layer of the film is not more than 15 nm and the number of the surface defects with a difference of height of 0.5 μm or more of the film is 5/m² or less.;COPYRIGHT: (C)2004,JPO&NCIPI