公开(公告)号：US20230211538A1

公开(公告)日：2023-07-06

申请号：US18000447

申请日：2021-08-17

Applicant: Shibaura Machine Co., Ltd.

Inventor： Shozo SUZUKI

IPC: B29C48/76 ,  B29B7/48 ,  B29C48/405

CPC classification number: B29C48/767 ,  B29B7/48 ,  B29C48/405

Abstract: An extruder is provided with: a screw rotationally driven about the axis by a first motor; a barrel having a screw hole into which the screw is inserted and a de-airing port configured to discharge air inside the screw hole; a filter configured such that a part thereof faces the de-airing port of the barrel; and a filter-driving mechanism configured to move the filter to shift the part of the filter facing the de-airing port.