公开(公告)号：US20220288840A1

公开(公告)日：2022-09-15

申请号：US17629941

申请日：2020-04-06

申请人： SANOH INDUSTRIAL CO., LTD.

发明人： Guang Ping LAN ,  Kazuhiko NAKAZATO ,  Takaaki HABU ,  Kazuki YASURAOKA

IPC分类号： B29C53/84 ,  B29C53/08 ,  B29C37/00

摘要： An object is to provide a thermoplastic tube bending method that suppresses springback after the processing by a highly safe and short bending step. The thermoplastic tube bending method includes a step S1 of preheating the thermoplastic tube, a step S2 of bending the preheated thermoplastic tube by using a forming mold, and a step S3 of forming the bent thermoplastic tube by temperature control of an electric heater provided to the forming mold.