Biodegradable and/or compostable bio-based powders for additive manufacturing and methods of use thereof

The present invention relates to certain biodegradable and/or compostable bio-based particulate compositions for use in additive manufacturing, such as those comprising polyhydroxyalkanoate (PHA) powders, where the particulate compositions and/or PHA powders have (a) a free bulk density of greater t...

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Bibliographische Detailangaben
Hauptverfasser:	DERKS FRANCISCUS JOHANNES MARIE, DE GROOT RUUD, FRIEDERICHS JOSEPH PETRONELLA, STIJN WETTERS
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MAKING GRANULES OR PREFORMS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to certain biodegradable and/or compostable bio-based particulate compositions for use in additive manufacturing, such as those comprising polyhydroxyalkanoate (PHA) powders, where the particulate compositions and/or PHA powders have (a) a free bulk density of greater than 0.30 g/mL as determined by ASTM D1895-96, and (b) a sinterability region of greater than 15 degrees Celsius. The invention also relates to certain methods of making such biodegradable and/or compostable bio-based particulate compositions useful as powdered build materials for additive manufacturing processes. In addition, the present invention relates to additive manufacturing processes utilizing the biodegradable and/or compostable bio-based particulate compositions as described elsewhere, and articles printed therefrom. 本发明涉及用于增材制造的某些可生物降解和/或可堆肥生物基颗粒状组合物，如包含聚羟基链烷酸酯(PHA)粉末的那些，其中该颗粒状组合物和/或PHA粉末具有(a)如通过ASTM D1895-96所测定大于0.30g/mL的自由堆积密度，和(b)大于15摄氏度的可烧结性区域。本发明还涉及制造可用作用于增材制造过程的粉末化构建材料的此类可生物降解和/或可堆肥生物基颗粒状组合物的某些方法。另外