Patent ID: 8038929
Filing Date: 2011-10-18
Classification: B22F,C04B

Abstract:
1. A method of manufacturing a molding material, the method comprising the steps of: mixing at least a molding powder, a powder of agar and a solvent at a temperature not higher than a dissolving point of agar to provide a mixture, while said agar absorbs said solvent and while pulverizing agglomerates containing said molding powder, said powder of agar and said solvent absorbed in agar, wherein said agglomerates are cut with a chopper blade to pulverize said agglomerates while flowing said mixture with a planetary blade, and wherein said mixture gives an amount of residue of no more than 0.4 parts by weight with respect to 100 weight parts of said molding powder after passing said mixture through a screen having a wire diameter of 390 μm and a mesh of 600 μm; then heating said mixture to a temperature not lower than said dissolving point of agar while kneading said mixture to form a sol; and then cooling said sol to a temperature not higher than a gel point of agar thereby forming a molding material.