Patent · US Expired

Flame barrier comprising a nonwoven fabric layer containing phenolic, para-aramid or melamine staple fibers in combination with vermiculite

US5534325A · kind A · utility

15Cited by

3References

6Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

Kurt Jorder · Weinheim, DE
Werner Schafer · Essen, DE
Hans Hettenbach · Ladenburg, DE

Key dates

Filing date	Mar 30, 1995
Grant date	Jul 9, 1996
Priority date	—
Expiry date	Mar 30, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/3724
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A flame barrier made of nonwoven fabric for use as a component of a planar multilayer structure, especially a vehicle or aircraft passenger seat. The flame barrier contains staple fibers made of phenolic resin, para-aramid, or melamine resin, alone or mixed with 20 to 60 wt % preoxidized polyacrylonitrile staple fibers. The nonwoven fabric barrier also contains 15 to 30 wt % vermiculite, which is distributed through the entire volume of the nonwoven fabric. The flame barrier possesses a mass per unit area of 100 g/m.sup.2 to 210 g/m.sup.2. The method of manufacturing the nonwoven fabric flame barrier makes use of water jet needling.

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