Process for manufacturing insulation products based on...

C - Chemistry – Metallurgy – 03 – C

Patent

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Details

C03C 25/26 (2006.01) C03C 25/34 (2006.01) C09D 161/06 (2006.01)

Patent

CA 2739773

The present invention relates to a process for manufacturing thermal and/or acoustic insulation products based on mineral wool, especially on rock wool or glass wool, bound by a sizing composition based on a thermosetting resin, in particular of resol type, which aims to limit the emissions of formaldehyde. The process is characterized in that it comprises a step that consists in applying a composition of an agent capable of reacting with formaldehyde, chosen from compounds having active methylene(s), to the insulation product, after the thermosetting resin has crosslinked. Another subject of the present invention is the device for carrying out the aforementioned process and the insulating products based on mineral fibres that are obtained.

La présente invention se rapporte à un procédé de fabrication de produits d'isolation thermique et/ou acoustique à base de laine minérale, notamment de roche ou de verre, liée par une composition d'encollage à base d'une résine thermodurcissable, en particulier de type résol, qui vise à limiter les émissions de formaldéhyde. Le procédé se caractérise en ce qu'il comprend une étape consistant à appliquer une composition d'un agent apte à réagir avec le formaldéhyde choisi parmi les composés à méthylène(s) actif(s) sur le produit d'isolation, après que la résine thermodurcissable a réticulé. Elle a également pour objet le dispositif de mise en oeuvre du procédé précité et les produits isolants à base de fibres minérales obtenus.

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