| 摘要 |
PURPOSE:To provide a method for preparing a reverse rubber mold and a metal mold with less generation of deformation and strain after turning over and excellent dimensional accuracy. CONSTITUTION:A method for preparing a reverse rubber mold wherein when the reverse mold is prepd. from an original mold 1 by using a silicone rubber 4, a silicone rubber 4 corresponding to the amt. of contraction caused by liq. contraction and gel-like contraction during curing of the silicone rubber 4 is fed from a feeding part provided on a container for forming the reverse mold, is provided. After the reverse rubber mold is prepd., a matrix is prepd. from this reverse rubber mold and then, a metal mold for preparing duplicates is prepd. from this matrix. |
