Method for manufacturing a sound insulating structure and...

D - Textiles – Paper – 05 – C

Patent

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Details

D05C 17/02 (2006.01) B29C 43/20 (2006.01) B32B 27/00 (2006.01) B32B 27/12 (2006.01) B60R 13/00 (2006.01) B60R 13/08 (2006.01) D06N 7/00 (2006.01) G10K 11/16 (2006.01) G10K 11/168 (2006.01)

Patent

CA 2366113

The present invention provides a sound insulating structure cover panel that compliments the sound attenuation material. The method of manufacturing the panel comprises the steps of providing a laminated blank (2) having an interior face which will be observable from the passenger compartment. The side opposite the interior face of the blank has a generally non-permeable polymeric layer (14) adjacent to a primary backing (10) and a secondary backing layer (16) overlying the polymeric layer. In the preferred process, the previously described blank is elevated to a desired temperature and positioned in a closed forming mold (62) such that the perimeter of the blank is retained in a fixed position. The forming mold is closed with a controlled pressure that is sufficient to expand the blank, conform it to the mold and render a panel having a desired permeable.

L'invention concerne un panneau de revêtement à structure d'isolation phonique qui complète le matériau d'atténuation acoustique. Le procédé de fabrication dudit panneau consiste à prévoir une ébauche stratifiée (2) présentant une face intérieure qui sera visible de l'habitacle. Le côté opposé à la face intérieure de l'ébauche possède généralement une couche polymère généralement non perméable (14) adjacente à une première (10) et une deuxième (16) couche dorsale recouvrant la couche polymère. Dans le procédé préféré de l'invention, ladite ébauche est portée à la température voulue et placée dans un moule de formage fermé (62), de sorte que la bordure de ladite ébauche soit maintenue en position fixe. Le moule de formage est fermé au moyen d'une pression contrôlée suffisante pour que l'ébauche soit agrandie, épouse les formes du moule et qu'un panneau présentant la perméabilité voulue soit produit.

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