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US 2008/0289503 A1Published application
Method and Device for Welding Metallic Fibers Into a Fleece by Repeatedly Carrying out a Welding Process, Fleece Having Welded Metallic Fibers and Method of Filtering Exhaust Gas With a Fleece
AssigneeEmitec Gesellschaft fur Emissionstechnologie mbH
InventorsRolf Bruck, Gottfried Wilhelm Haesemann
Life of this patent
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Abstract
A method and a device produce a fleece of metallic fibers in a layer in which the metallic fibers are welded to one another to form the fleece. A welding process is repeatedly carried out with regard to a portion or section of the fleece. Such metallic fiber fleeces are used, in particular, for exhaust gas treatment units in the automobile industry.
Claims17
A method for producing a fleece from metallic fibers, the method comprising the following steps:
- a) forming a layer with metallic fibers;
- and
- b) welding the fibers to one another to form a fleece by repeatedly carrying out a welding process relative to a portion of the fleece.
A device for welding metallic fibers, the device comprising:
- a feeding unit for feeding a layer of metallic fibers;
- a first welding station for producing connections between the fibers in a partially-welded portion of the layer;
- and
- a second welding station for receiving the partially-welded portion of the layer and for producing further connections between the fibers.
1 more element
Dependencies are inferred from the claim text.