Mounting mat for pollution control elements
A technology of pollution control components and edges, applied in the direction of engine components, manufacturing tools, exhaust devices, etc., can solve the problems of itchy skin, irritation, escape, etc., and achieve the effect of less skin irritation and itching
Active Publication Date: 2019-08-06
3M INNOVATIVE PROPERTIES CO
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Later, when mounting mats or end cone insulation are incorporated into pollution control devices, dust escapes from the fibrous material of the mats and can cause itching or skin irritation problems for workers handling these mats
Method used
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Embodiment 1
[0097] Embodiment 1: sample group 1, focal length=60mm, grid space=0.8mm;
Embodiment 2
[0098] Embodiment 2: sample group 2, focal length=40mm, grid space=0.8mm;
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Abstract
The invention discloses a mat (1) for mounting a pollution control element in a housing, comprising inorganic fibre material. At an edge surface (20) of the mat a plurality of fibres (30) are heat fused to form fusion volumes (90). The average number of fusion volumes per square millimetre of the edge surface is at least 100, and at least 80% of the fusion volumes have a projected size of between10 [mu]m and 100 mu]m.
Description
technical field [0001] The present disclosure relates to mats for mounting pollution control elements, such as catalyst bodies, in housings, and in particular, to such mats comprising fibrous material including inorganic fibres. The invention also relates to pollution control devices comprising such mats, and to methods for forming such mats. Background technique [0002] Pollution control devices are used on motor vehicles to control air pollution. Such devices include catalytic converters and diesel particulate filters or traps. These devices include pollution control elements. For example, catalytic converters typically comprise a monolithic structure of ceramic or metal that supports the catalyst. The catalyst oxidizes carbon monoxide and hydrocarbons and reduces nitrogen oxides in engine exhaust to control air pollution. Furthermore, diesel particulate filters or traps typically comprise wall-flow filters, usually made of porous crystalline ceramic material, in the ...
Claims
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IPC IPC(8): F01N3/28B23K26/40
CPCB23K26/083B23K26/0876B23K26/20B23K26/324B23K26/38B23K26/402B23K26/082B23K2103/38B23K2103/52F01N3/2853F01N2310/02F01N2330/101B23K26/40F01N3/2803
Inventor 克斯廷·C·罗森克努特·舒马赫蒂洛·雷姆霍夫
Owner 3M INNOVATIVE PROPERTIES CO