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1. (WO2018200771) ENHANCED LAYER ADHESION ADDITIVE IN MANUFACTURING BY USE OF MULTIPLE HEATING STEPS

Pub. No.:    WO/2018/200771    International Application No.:    PCT/US2018/029512
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 27 01:59:59 CEST 2018
IPC: B22F 3/105
B29C 64/118
B29C 64/153
Applicants: SABIC GLOBAL TECHNOLOGIES B.V.
PAI-PARANJAPE, Vandita
Inventors: PAI-PARANJAPE, Vandita
MILOSKOVSKA, Elena
JOFORE, Bruke
GU, Hao
FERNANDEZ CABELLO, Raul
CACCAVALE, Federico
PRICE, Brian
Title: ENHANCED LAYER ADHESION ADDITIVE IN MANUFACTURING BY USE OF MULTIPLE HEATING STEPS
Abstract:
Provided are systems and methods for additive manufacturing, which systems and methods yield parts having improved interlay er adhesion. In the disclosed technology, additional heating steps are applied on the upper surface of the already printed workpiece so as to offset the dropping temperature of that surface during part fabrication. These heating steps elevate the temperature of the surface to a value that results in a molten interface with subsequently-applied build material, leading to improved interlayer adhesion. This technology is applicable to a variety of additive manufacturing processes, including but not limited to selective laser sintering, fused filament fabrication, and large format additive manufacturing approaches.