公开(公告)号：US10189201B2

公开(公告)日：2019-01-29

申请号：US15157844

申请日：2016-05-18

Applicant: Plastic Omnium Advanced Innovation and Research

Inventor： Yvonnig Guezennec ,  Stephane Toutain ,  Jean-Francois Coing ,  Serge Dupont

IPC: B29C49/22 ,  B29C49/00 ,  B29C49/04 ,  B29C49/20 ,  B29C49/78 ,  B29C49/60 ,  B29C65/02 ,  B29L31/00 ,  B60K15/03

Abstract: A method for manufacturing a hollow body, typically a tank, from a plastic material. The method includes molding a preform into shells in a molding tool; joining an insert to an inner surface of a shell of said shells, the insert defining a sub volume within the hollow body to be made; joining together the shells to form the hollow body by closing the molding tool and applying a main pressure to a main volume enclosed by the shells. It is proposed to apply a sub pressure to the sub volume while applying the main pressure to the main volume, such that a pressure difference between the main volume and the sub volume is bigger than 0.20 bar (P1′−P2′>0.20 bar) and smaller than 3.00 bar (P1′−P2′