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:
Apr. 15, 2014
Filed:
Aug. 17, 2006
Claude Dehennau, Waterloo, BE;
Dominique Grandjean, Brussels, BE;
Paul Henrard, Le Roux, BE;
Solvay SA, Brussels, BE;
Abstract
A process for manufacturing a plastic-based cellular structure, in which parallel lamellae are continuously extruded through a die having a plurality of parallel slots and upon exiting the die spaces lying between two adjacent lamellae are subjected, in successive alternations and between two sizing units whose length is short enough for the plastic composition to remain molten, to an injection of compressed gas and to a vacuum, the two sides of a given lamella being, in respect of one of them, subjected to the action of the compressed gas and, in respect of the other of them, subjected to the action of the vacuum, and vice versa during the next alternation, so as to deform the lamellae and weld them together in pairs, with formation, in a plane approximately parallel to the extrusion direction, of a cellular structure whose constituent cells extend perpendicular to the extrusion direction.