MOLD RELEASE FILM, MOLD RELEASE CUSHION MATERIAL, AND PROCESS FOR MANUFACTURING PRINTED BOARD

摘要

A mold release film that does not need frequent replacement at hot press, realizing easy replacement; a mold release cushion material that enables suppressing the frequency of replacement of cushion material main body; and a process for manufacturing a printed board, in which a printed board can be manufactured with high productivity at low cost. There is provided mold release film (10) to be laid on a surface of cushion material of silicone rubber, comprising base material (12) of fluororesin and, superimposed on one surface thereof, layer (14) containing Si. Further, there is provided a mold release cushion material comprising a cushion material of silicone rubber and, superimposed on a surface thereof, a mold release film so that the layer containing Si is positioned on the side of cushion material. Still further, there is provided a process for manufacturing a printed board, comprising interposing a laminate of printed board main body and coverlay film between press boards and carrying out hot press with a mold release film disposed on the surface of the coverlay film side of cushion material and with the layer containing Si disposed on the side of cushion material.