METHOD FOR PRODUCING FILAMENT FOR FORMING THREE DIMENSIONAL PRINTER AND CRYSTALLINE SOFT RESIN MOLDED ARTICLE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a filament for forming a three dimensional printer capable of molding a resin in a wide temperature range without excessively increasing an extrusion processing temperature by the three dimensional printer and producing a crystalline soft resin molded article having excellent soft texture, shape reproducibility, shape maintenance properties, heat resistance and the like, and to provide a method for producing the crystalline soft resin molded article.SOLUTION: There is provided a filament for forming a three dimensional printer composed of a polyester-based thermoplastic elastomer which has a Duro D hardness (JIS K6253-1993) of 40 or less, wherein the thermal properties measured by a differential scanning calorimeter (DSC) satisfy the following conditions: a melting peak temperature (A) when the temperature is raised at 10°C/min is 120 to 220°C; a crystallization peak temperature (B) when the temperature is lowered at 10°C/min is 60 to 160°C; and a half-temperature width of the crystallization peak when the temperature is lowered at 10°C/min is 10 to 30°C.SELECTED DRAWING: Figure 1