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:
Jul. 06, 2021
Filed:
Mar. 09, 2017
Treves Products, Services & Innovation, Paris, FR;
Dominique Lemaire, Villiers devant le Thour, FR;
Guillaume Crignon, Sillery, FR;
Christophe Capron, Epoye, FR;
TREVES PRODUCTS, SERVICES & INNOVATION, Paris, FR;
Abstract
The invention relates to a method of producing a sound proofing trim panel comprising the steps of providing an elastically compressible lower layer, heating the lower layer and placing it in a mould to shape it to form a spring layer of a spring-mass type damping system. The method further includes associating the lower layer with an upper layer, to form the mass of the spring-mass system. According to the invention, the lower layer comprises a blend of elastically compressible foam flakes forming at least 80 wt.-% of the lower layer and being mixed with binder fibres. The fibres comprising a core and a sheath that is fusible at a moderate temperature, and the flakes being bonded to one another by means of the fusing of the sheath forming a binder, such that the lower layer takes the form of a bonded foam.