GASEOUS PRESSURE ADDING PRESS

摘要

PURPOSE:To form a substrate having uniform thickness and high quality at a low cost. CONSTITUTION:Uniform surface pressure by the pressure of high-pressure gas and pressurizing force of a main hydraulic cylinder 3 are applied to a base stock for substates with an upper heat plate 11b and lower heat plate 11a at the same time as the addition of the pressure of high-pressure gas in the sealed space 16S in a cylindrical ring 16. Consequently, since the substrate is formed by two kinds of optimum bonding surface-pressures even when two kinds of adhesives are contributed on the base stock 37 for substrates, a high-quality substrate having uniform finished thickness produced at a low cost. Consequently, by locally adding the surface pressure that is slighty higher than the bonding surface-pressure on necessary places in addition to the uniform bonding surface- pressure, the high-quality substrate having uniform finished thickness is produced at high yield.