| 摘要 |
PURPOSE:To make it possible to produce simply and inexpensively a molding having a groove, a recessed part and/or a hole each with an arbitrary shape. CONSTITUTION:After a soluble body 1 consisting of a water- or alcohol-soluble nylon being molded into an arbitrary shape is positioned in a cavity of molds 2 and 3, a reaction injection soln. consisting of a monomer or a prepolymer is cast in the cavity to perform polymn. and curing and this cured molded item is taken out of the molds 2 and 3. Then, the soluble body 1 is dissolved by immersing the molded item in a solvent and a space is formed at a part where the soluble body 1 has existed to prepare a molding having a hole and/or a recessed part each with an arbitrary shape. |
