System for securing the end cone or mounting mat of a...

Details System for securing the end cone or mounting mat of a... System for securing the end cone or mounting mat of a...

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 3/021 (2006.01) F01N 3/28 (2006.01)

Patent

CA 2514754

A thin-walled structure (e.g., an end cone insulator (12) and/or a mounting mat) (12) comprising insulating material suitable for insulating portions (e.g., an end cone) of a pollution control device (16) and/or mounting material suitable for mounting a pollution control element in a pollution control device (16) (e.g., a catalytic element in a catalytic converter, a filter element in a diesel or gasoline engine exhaust filter, etc.). The thin- walled structure can comprise an insulating material and/or mounting material in the form, for example, of a sheet, mat (12) or three-dimensional thin walled structure (e.g., a single piece or multiple piece three dimensional end cone insulator).(12) An intermediate adhesive (18) (e.g., a heat activated adhesive, hot melt adhesive and/or adhesive-like thermoplastic material) is bonded to at least one major surface of the thin-walled structure so as to coat and penetrate into the at least one major surface. The intermediate adhesive (18) at least mechanically bonds to the thin-walled structure. A pressure sensitive (20) adhesive is bonded to the intermediate adhesive (18) and used to secure the thin-walled structure in place in the pollution control device (16).

L'invention concerne une structure à paroi fine (12) (par exemple, un isolateur à cône d'extrémité (12) et/ou un mât de montage (12)) qui comprend un matériau isolant apte à l'isolation de parties (par exemple, un cône d'extrémité) d'un dispositif antipollution (16) et/ou un matériau de montage apte au montage d'un élément antipollution dans un dispositif antipollution (16) (par exemple, un élément catalytique dans un convertisseur catalytique, un élément de filtre dans un filtre d'échappement de moteur diesel ou essence, etc.). Cette structure à paroi fine peut comprendre un matériau isolant et/ou un matériau de montage sous forme, par exemple, de feuille, de mât (12) ou de structure à paroi fine tridimensionnelle (par exemple, un isolateur à cône d'extrémité monobloc ou en plusieurs pièces) (12). Un adhésif intermédiaire (18) (par exemple, un adhésif thermocollant et/ou un matériau thermoplastique de type adhésif) est collé sur au moins une surface principale de ladite structure à paroi fine afin de revêtir ladite surface et d'y pénétrer. Cet adhésif intermédiaire (18) colle au moins mécaniquement à ladite structure à paroi fine. Un autoadhésif (20) est collé à l'adhésif intermédiaire (18) et utilisé pour maintenir ladite structure à paroi fine en place dans ledit dispositif antipollution (16).

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