Patent · US Active

Nonwoven material with particle filler

US9172074B2 · kind B2 · utility

12Cited by

10References

24Claims

0Family size

Assignee

Carl Freudenberg KG · DE

Inventors

Christoph Weber · Heidenheim, DE
Michael Roth
Peter Kritzer · Hamm (Sieg), DE
Gunter Scharfenberger · Bischofswerda, DE
Rudolf Wagner · Fontnas, CH

Key dates

Filing date	Sep 8, 2008
Grant date	Oct 27, 2015
Priority date	—
Expiry date	Nov 21, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/2918
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A ply includes a fibrous nonwoven web fabric forming a foundational structure, wherein the foundational structure includes fibers forming first pores and is partially filled with particles, wherein the particles at least partially fill the first pores so as to form regions filled with particles, wherein the particles in the filled regions form second pores, and wherein an average diameter of the particles is greater than an average pore size of more than 50% of the second pores.

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