Patent · US Expired

Flame barrier made of nonwoven fabric

US5279878A · kind A · utility

23Cited by

4References

22Claims

0Family size

Assignee

Carl Freudenberg · DE

Inventors

Walter Fottinger · Weinheim, DE
Jurgen Knoke · Weinheim, DE
Peter Grynaeus · Birkenau, DE
Werner Schafer · Essen, DE

Key dates

Filing date	Feb 1, 1991
Grant date	Jan 18, 1994
Priority date	—
Expiry date	Feb 1, 2011

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/689
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Disclosed is a flame barrier made of a nonwoven fabric of partially graphitized polyacrylonitrile fibers having a weight per unit area of 40 to 100 g/m.sup.2 and a maximum thhickness of 1.8 mm. The nonwoven fabric is bonded with highly energetic water jets. The flame barrier can be used as a component of a planar multi-layer structure.

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