Patent · US Active

Method for producing a filter medium, and a filter medium

US10675575B2 · kind B2 · utility

0Cited by

4References

12Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Jens Timo Neumann · Shanghai, CN
Anton Kreiner · Dingolfing, DE
Markus Weindl · Fulda, DE
Christian Zisslsberger · Grafling, DE

Key dates

Filing date	Feb 19, 2018
Grant date	Jun 9, 2020
Priority date	—
Expiry date	Aug 13, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2275/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In a method for producing a filter medium, at least one substrate layer of a nonwoven comprising cellulose fibers and/or synthetic polymer fibers is provided and a fiber layer of polymer fibers is deposited on the at least one substrate layer. Prior to depositing the fiber layer, a solvent is applied to the at least one substrate layer, wherein a material of the substrate layer and/or a material of the fiber layer is soluble in the solvent. A filter medium produced by the method has material-fused connections at crossing points of the polymer fibers and/or cellulose fibers of the substrate layer with the polymer fibers of the fiber layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.