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Karl Mayer Malimo Textilmaschinenfabrik Gmbh

Langendorf Textil Gmbh & Co. Kg

Asglawo Gmbh-stoffe Zum Daemmen Und Verstaerken

Asglawo Gmbh Stoffe Zum D&atilde;mmen Und Verst&auml;rken

Schierz, Claus

Claus Schierz

Bernhard Kohlsdorf

Gerd Franzke

Martin Waldmann

Markus Schierz

The invention relates to a mounting mat for mounting an exhaust gas catalytic converter, which is used for purifying motor vehicle exhaust gases, in a catalytic converter housing. The mounting mat has at least three plies and is mechanically compacted by seams () that absorb tensile stresses. The seams () are made with a sewing thread () whose temperature resistance is lower than the temperature of the mounting mat () when the exhaust gas catalytic converter is in operation. According to the invention, an elastically compressible nonwoven () made of crimped metal filaments is placed between two outer plies (') made of mineral fibers ().

Mounting mat for mounting an exhaust gas catalytic converter

The invention relates to a method and a system for producing a multi-layer thread or fibre arrangement (GF) which is pre-fixed by means of a loop structure and is used a s a strip-type semi-finished product for reinforcing elements consisting of plastic or resin. Said fibre arrangement (GF) comprises layers consisting of stationary weft yarns (K) and layers consisting of thread or fibre warps (S, D,D') which are stretched between conveyor chains in such a way that they are oriented in different directions. The aim of the invention is to reduce the costs and the required surface mass, simultaneously maintaining defined, required flexural strength. To this end, the method is designed in such a way that the stationary weft layer (KR) consisting of fibre or thread warps and oriented parallel to the working direction is located directly adjacent to the needle loops (WN) of the loop structure, and needle loops (WNv) of the loop structure cross the threads or fibres of the stationary weft layer, in the knock-over phase, before the knitting needles () penetrate the thread arrangement (G) in order to create a successive row of loops.

Method and system for producing a multi-layer, pre-fixed thread or fiber arrangement

A bearing mat for supporting an exhaust gas catalyst is configured as a binding agent-free, multi-layered flat structure made of thermally stable threads mechanically reinforced by quilting seams. The threads consist of a crimped yarn composed of filaments and are fixed in the flat structure by the quilting seams under tensile stress. The quilting seams are sewn using a thread whose thermal stability is lower than the mat's operating temperature. A process for producing the mat is also provided, in which crimped yarn composed of thermally stable filaments is withdrawn from rolls in several strands and placed under tension on a transporting device moving transversely to the take-off direction in order to form a multi-layered flat structure. The flat structure moved forward by the transporting device is mechanically reinforced with quilting seams so that the threads remain under tension after the flat structure is removed from the transporting device.

Mounting mat for mounting an exhaust-gas catalytic converter

A bedding mat for supporting an exhaust gas catalyst in a metallic catalyst housing used to purify motor vehicle exhaust gases comprises a yarn processed to form a flat textile structure. The yarn comprises a plurality of voluminous, thermally stable filaments which are aligned parallel with each other in a bundle and a casing around the bundle which decomposes upon heating. An edge protection made of thermally stable threads is provided along the edges of the flat structure.

Bedding mat for supporting an exhaust gas catalyst

A yarn that expands upon heating comprises a plurality of voluminous, thermally stable individual threads or filaments, which are compacted to form a bundle and aligned in parallel, and a casing for the bundle made of a material having a lower thermal stability than the individual filaments, which decomposes upon heating. A method for producing the yarn is also provided.

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Freiberg, Germany

Claus Schierz