FIBER-BLENDED HETEROPHASIC COPOLYMER FOR ADDITIVE-MANUFACTURE FEEDSTOCK

• Main Authors: SING, Michelle, HERRINGTON, Kevin, FALLON, Jacob, DI PINTOR DA LUZ, Alexandre
• Format: Patent
• Language: English; French
• Published: 29.09.2022
• Subjects: 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 OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to an additive-manufacture feedstock, comprising a heterophasic copolymer having a melt flow rate of from 0.1 to 150 g/10 min (230°C/ 2.16 kg), measured according to ASTM D 1238, and a fiber blended in the heterophasic copolymer. The first-fiber-blended heterophasic copolymer, when in the form of a printed article, exhibits a minimized warpage. The invention also relates to methods of making the additive-manufacture feedstock and methods of 3D printing using the additive-manufacture feedstock in various forms. L'invention concerne une charge d'alimentation de fabrication additive, comprenant un copolymère hétérophasique ayant un indice de fluidité de 0,1 à 150 g/10 min (230 °C/2,16 kg), mesuré selon la norme ASTM D 1238, et une fibre mélangée dans le copolymère hétérophasique. Le copolymère hétérophasique à premier mélange de fibres, lorsqu'il se présente sous la forme d'un article imprimé, présente un gauchissement réduit au minimum. L'invention concerne également des procédés de fabrication de la charge d'alimentation de fabrication additive et des procédés d'impression 3D utilisant la charge d'alimentation de fabrication additive sous diverses formes.