US 12,226,718 B2
Fabric layer, flat material, filter element, filter and method for the production of a fabric layer
Karl Wartlick, Oberderdingen (DE)
Assigned to ARGO-HYTOS GROUP AG, Baar (CH)
Filed by ARGO-HYTOS GROUP AG, Baar (CH)
Filed on May 13, 2022, as Appl. No. 17/663,301.
Application 17/663,301 is a continuation of application No. 16/549,366, filed on Aug. 23, 2019, granted, now 11,358,075.
Claims priority of application No. 10 2019 109 617.0 (DE), filed on Apr. 11, 2019; and application No. 20 2019 102 088.1 (DE), filed on Apr. 11, 2019.
Prior Publication US 2022/0288509 A1, Sep. 15, 2022
Int. Cl. B01D 29/21 (2006.01); B01D 39/08 (2006.01); B01D 46/52 (2006.01)
CPC B01D 29/21 (2013.01) [B01D 39/08 (2013.01); B01D 46/521 (2013.01); B01D 2239/065 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A flat material for a filter element, wherein the flat material has a corrugated or pleated form with a plurality of pleats or corrugations running parallel to one another, and a fluid can flow through the flat material, and the flat material comprising:
at least one functional layer for removing foreign matter out of the fluid; and
at least one fabric layer connected to the at least one functional layer, the at least one fabric layer including a first fabric layer comprising a first fabric strip and a second fabric strip, the first fabric strip and the second fabric strip use same the weft threads, wherein the first fabric strip comprises a first type of weave and the second fabric strip comprises a second type of weave-different from the first type of weave,
wherein a first section of the first fabric strip with the first type of weave lays against a second section of the first fabric strip with the first type of weave forming micro-channels between the first section of the first fabric strip and the second section of the first fabric strip.