Method of making a fibrous pack

C - Chemistry – Metallurgy – 03 – B

Patent

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Details

C03B 37/04 (2006.01) D01D 5/00 (2006.01) D01D 5/18 (2006.01) D04H 1/54 (2006.01) D04H 1/56 (2006.01) D04H 1/70 (2006.01) D04H 3/14 (2006.01) D04H 5/06 (2006.01) D04H 5/08 (2006.01) D04H 13/00 (2006.01) E04B 1/76 (2006.01)

Patent

CA 2309282

A method of making a fibrous pack (36) includes centrifuging at least two sets of mineral fibers from molten material using at least two rotary mineral fiber spinners (12) that are arranged in a machine direction along a collection surface (14), directing each set of the mineral fibers into a downwardly moving veil (24) beneath one of the mineral fiber spinners (12), generating a downwardly moving array (52) of aligned organic fibers from at least one orificed die (50) that is spaced apart from each of the mineral fiber spinners (12) and directing the array (52) into contact with the mineral fibers, and collecting the mineral fibers and organic fibers as a fibrous pack (36).

Ce procédé de production de paquets de fibres (36) consiste à soumettre à une centrifugation au moins deux ensembles de fibres minérales provenant d'un matériau fondu et ce, en utilisant au moins deux dispositifs de filature rotatifs pour fibres minérales (12) disposés dans le sens machine le long d'une surface de collecte (14), à diriger chaque jeu de fibres minérales vers l'intérieur d'un voile de revêtement exécutant un mouvement descendant et situé sous chaque dispositif de filature (12), à constituer un réseau à mouvement descendant (52) de fibres organiques alignées provenant d'au moins une filière (50) située à une certaine distance de chaque dispositif de filature (12) et à faire entrer en contact le réseau (52) avec les fibres minérales, puis à recueillir les fibres minérales et organiques sous forme de paquet de fibres (36).

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