公开(公告)号：US20200070402A1

公开(公告)日：2020-03-05

申请号：US16466106

申请日：2017-12-05

Applicant: President and Fellows of Harvard College ,  ETH Zurich (Swiss Federal Institute of Technology)

Inventor： Jennifer A. Lewis ,  Jochen Mueller ,  Jordan R. Raney ,  Kristina Shea

IPC: B29C64/106 ,  B33Y10/00 ,  B33Y70/00

Abstract: A 3D printed core-shell filament comprises an elongated core radially surrounded by an outer shell with a barrier layer in between, where the elongated core comprises a ductile polymer and the outer shell comprises a stiff polymer having a Young's modulus higher than that of the ductile polymer. A lightweight lattice structure may comprise a plurality of the 3D printed core-shell filaments deposited in layers.