Manufacture of an air bag fabric

US5131434A · kind A · utility

Assignee

• Akzo N.V. · NL

Inventors

• Wolf R. Krummheuer · Wuppertal, DE
• Hans A. Graefe · Schwelm, DE
• Volker Siejak · Sörup, DE

Key dates

• Filing date: Sep 9, 1991
• Grant date: Jul 21, 1992
• Expiry date: Sep 9, 2011

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D03D1/02
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An air bag fabric has zones of differing air permeability which are variable in shape and size. A dobby, tappet or Jacquard machine may be used to weave, into a fabric having tight basic weave, window-like zones with a weave which differs from the basic weave, as a result of which these zones have a high air permeability. The zones of low air permeability are arranged in such a way that later they form the edges of cuts and seams. It is further possible to manufacture fabrics which have zones of differing air permeability by alternating sections of high warp or weft sett with sections of low warp or weft sett. The fabrics of the invention are suitable in particular for the filter part of air bags.