Control of pre-cured product moisture for formaldehyde-free...

B - Operations – Transporting – 05 – D

Patent

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B05D 3/02 (2006.01)

Patent

CA 2572339

A system for controlling the residual moisture in pre-cured binder coated glass fibers. The moisture of the binder coated glass fibers is measured after the process water is extracted in a collection box. Based on the level of moisture found in the coated glass fibers, adjustments are made to the process upstream of the moisture measurements. The adjustments include, but are not limited to, adjusting the amount of water used to make the binder composition; adjusting the amount of heat applied to the binder composition as it is applied to the glass fibers and adjusting the vacuum conditions used to extract the process water from the binder coated glass fibers. Control of the residual moisture in the precured binder coated glass fibers helps ensure proper curing of the binder during the subsequent curing step.

La présente invention concerne un système permettant de réguler l'humidité résiduelle dans des fibres de verre recouvertes d'un liant précuit. L'humidité des fibres de verre recouvertes du liant est mesurée après extraction de l'eau de traitement dans un boite de collecte. En fonction du niveau d'humidité décelée dans les fibres de verre recouvertes, des réglages sont effectués sur le processus en amont des mesures d'humidité. Ces réglages comprennent, non exclusivement, un réglage de la quantité d'eau utilisée pour fabriquer la composition de liant; un réglage de la quantité de chaleur appliquée à la composition de liant lors de l'application sur les fibres de verre et un réglage des conditions de vide mises en oeuvre pour extraire l'eau de traitement des fibres de verre recouvertes du liant. La régulation de l'humidité résiduelle dans les fibres de verre recouvertes du liant précuit permet d'assurer une cuisson correcte du liant lors de l'étape de cuisson subséquente.

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