Method for freeze molding

摘要

The present invention includes a method for freeze molding, comprising the steps of: mixing poly(vinyl alcohol) or a modified additive thereof with a material slurry to obtain a mixture; pouring the mixture into a molding die; and subjecting the mixture in a molding die to at least one cycle of cooling and heating so as to obtain a compact. A compact obtained in this method is free from melting and can maintain its configuration even if the compact is kept at a temperature of freezing point or higher. Further, since the method does not require vacuum drying, the compact can easily be dried.