Molded insulation products and their manufacture using...

Details Molded insulation products and their manufacture using... Molded insulation products and their manufacture using...

B - Operations, Transporting

29

C

B29C 70/06 (2006.01) F01N 13/14 (2010.01) F01N 13/18 (2010.01) B27N 3/04 (2006.01) B27N 3/06 (2006.01) B27N 3/16 (2006.01) B29C 70/34 (2006.01) B29C 70/50 (2006.01) F01N 3/28 (2006.01)

Patent

CA 2271015

A process of forming a thermal insulation layer (34) includes advancing a multifilament strand of continuous filaments (12) through a nozzle (10) to separate the filaments (16) from each other to form a continuous-filament wool (14), applying a binder to the filaments, placing a charge comprising the wool in a mold (32), and molding the charge to form an insulation layer (34). In a preferred embodiment, the charge (30) further comprises a container, such as a bag (24) formed from a polymer film. The filaments are preferably prepared from a high-strength, high-temperature resistant glass material. The molded wool is advantageously used to manufacture products, such as catalytic converters (46) wherein the wool is used to thermally insulate the catalytic core element (48).

Procédé pour former une couche d'isolation thermique (34), consistant à faire avancer un fil formé de filaments 12) multiples à travers une buse (10) pour séparer les filaments (16) les uns des autres afin de produire une laine (14) à fil continu, à appliquer un liant sur les filaments, à placer une charge contenant cette laine dans un moule (32) et à mouler cette charge pour former une couche d'isolation (34). Dans un mode de réalisation préféré la charge (30) comporte en outre un récipient tel qu'un sac (24) formé d'un film polymère. Les filaments sont de préférence préparés à partir d'un matériau de verre extra solide et résistant aux hautes températures. La laine moulée se prête avantageusement à la fabrication de produits tels que les convertisseurs catalytiques (46), où elle est utilisée pour l'isolation thermique du noyau catalytique (48).

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