Powder composition and method for producing three-dimensional objects by selective laser sintering and/or melting

The invention relates to a composition of powder for producing 3D spatial objects in devices using the process of selective sintering or/and melting using a source of electromagnetic energy, in particular a laser, containing not less than 40% w/w of the basic substance and optionally additional comp...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Szczurek, Pawel, Glowacki, Konrad
Format:	Patent
Sprache:	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 ADHESIVES AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention relates to a composition of powder for producing 3D spatial objects in devices using the process of selective sintering or/and melting using a source of electromagnetic energy, in particular a laser, containing not less than 40% w/w of the basic substance and optionally additional components, in particular selected from the group consisting of a brightener, a visible dye, a pulverised metal or mineral, a carbon or glass fibre, glass beads or UV absorbers, antioxidants, additives for improving the non-flammable properties, additives for improving the liquidity of plastic, characterised in that it contains an absorbing substance, wherein the value of maximum absorbance of the absorbing substance for the waves in the range of 700-6000 nm is not less than 0.05, and the mean absorbance value in the wavelength range of 400-700 nm is at least twice as low as the maximum absorbance for the waves in the range of 700-6000 nm, and the temperature of decomposition and/or melting of the absorbing substance is greater than the melting point of the base powder.