LIQUEFIER ASSEMBLY HAVING INLET LINER FOR USE IN ADDITIVE MANUFACTURING SYSTEM

摘要

A liquefier assembly for use in an additive manufacturing system, the liquefier assembly comprising a liquefier tube, a rigid sleeve secured to an inlet end of the liquefier tube, an extrusion tip secured to an outlet end of the liquefier tube, and a hollow liner disposed at least partially within the rigid sleeve such that inner surfaces of the liquefier tube and the hollow liner are substantially flush, and where the inner surface of the hollow liner has a low surface energy.