Patent · US Expired

Method for manufacturing a filter body

US6998080B2 · kind B2 · utility

12Cited by

6References

11Claims

0Family size

Assignee

MSA Auer GmbH · DE

Inventors

Gabriele Stadermann · Berlin, DE
Karl-Heinz Kohricht · Berlin, DE

Key dates

Filing date	Apr 2, 2002
Grant date	Feb 14, 2006
Priority date	—
Expiry date	Sep 24, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S264/48
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The first step of a method for manufacturing polymer-bonded filter bodies is to produce a mixture of a sorptive agent, a liquid, and a polymer. This mixture is then pressed into a filter body by being placed in a compression mold and simultaneously applying a hot gas to it. The evaporation temperature of the liquid is lower than the melting temperature of the polymer while the temperature of the hot gas flowing through the mixture exceeds the evaporation temperature of the liquid. This inexpensive method can provide homogeneously structured high-performance filter bodies.

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