| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for forecasting the quality of a resin molding which forecasts the quality of the resin molding molded by a foam injection molding method in a simulation stage. SOLUTION: In a quality forecasting system for forecasting the surface quality of a foamed injection-molded article obtained by injecting and filling a foamable resin in a cavity of a mold and foaming resin by expanding part of the cavity, a regression formula for calculating an evaluation standard value of the surface quality of the molding which includes each physical quantity as at least a variable of resin pressure, a resin temperature, the solubility of gas into the resin when the filling of the resin in the cavity is completed, and the amount of the expansion when part of the cavity is expanded is set. The evaluation standard value is calculated by substituting each physical quantity obtained by foam injection molding simulation concerning a distance between a first point and a second point on the surface of the molding into the regression formula. On the basis of the evaluation standard value, it is determined whether the surface quality of the molding is good or not. COPYRIGHT: (C)2008,JPO&INPIT
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