The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2019
Filed:
May. 18, 2016
Plastic Omnium Advanced Innovation and Research, Brussels, BE;
Yvonnig Guezennec, Venette, FR;
Stephane Toutain, Brussels, BE;
Jean-Francois Coing, Clairoix, FR;
Serge Dupont, Vilvoorde, BE;
Plastic Omnium Advanced Innovation and Research, Brussels, BE;
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 (PP>0.20 bar) and smaller than 3.00 bar (PP3.00 bar).