POWDER MATERIAL FOR THREE-DIMENSIONAL MOLDING AND MATERIAL SET FOR THREE-DIMENSIONAL MOLDING, AND THREE-DIMENSIONAL MOLDING AND METHOD AND APPARATUS FOR MANUFACTURING THREE-DIMENSIONAL MOLDING

摘要

PROBLEM TO BE SOLVED: To provide a powder material for three-dimensional molding which can manufacture a three-dimensional molding having a strength enough to keep a complicated three-dimensional shape, hardly forms a lump-like body under high-humidity environment, and is excellent in preservability.SOLUTION: A powder material for three-dimensional molding contains base material particles and a resin. The resin contains a first water-soluble resin and a second water-soluble resin. In the first water-soluble resin, 2 mass% of aqueous solution thereof exhibits heat reversible sol-gel phase transition, and the first water-soluble resin is gelated on a higher temperature side than a phase transition temperature which the aqueous solution has.SELECTED DRAWING: Figure 1