CORE-SHEATH FILAMENT WITH A SILICONE-CONTAINING BLOCK COPOLYMER CORE

• Main Authors: HACKBARTH, Kent C, CHASTEK, Thomas Q, WEST, Shaun M, BENSON, Karl E, YOUNG, Jacob D, CARVAJAL, Daniel, NAPIERALA, Mark E, BEHLING, Ross E, HAYS, David S
• Format: Patent
• Language: English; French
• Published: 18.02.2021
• 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; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; PERFORMING OPERATIONS; SPINNING; TEXTILES; TRANSPORTING

A core-sheath filament having a pressure-sensitive adhesive core and a non-tacky thermoplastic sheath that surrounds the core is provided. The pressure-sensitive adhesive core includes a) a silicone-containing block copolymer having multiple polydiorganosiloxane segments plus b) a silicone tackifying resin. Additionally, methods of making the core-sheath filament and methods of using the core-sheath filament to print a pressure-sensitive adhesive are described. L'invention concerne un filament à coeur-gaine ayant un noyau adhésif sensible à la pression et une gaine thermoplastique non collante qui entoure le coeur. Le noyau adhésif sensible à la pression comprend a) un copolymère séquencé contenant de la silicone ayant de multiples segments de polydiorganosiloxane plus b) une résine tackifiante de silicone. De plus, l'invention concerne des procédés de fabrication du filament coeur-gaine et des procédés d'utilisation du filament coeur-gaine pour imprimer un adhésif sensible à la pression.