| abstract |
The present invention is a granular material that can be satisfactorily recoated regardless of the type of granular material in the production of a three-dimensional additive manufacturing mold, and can be used without regenerating any refractory aggregate in non-printed parts. . This granular material is a granular material used for three-dimensional layered mold fabrication, and has a moisture absorption function on a coating material coated with or coated with an acid as a catalyst for activating and curing an organic binder for bonding the granular material. It contains a material capable of having a hydration reaction and generating a catalytic effect. |