Inflatable airbag and a method for making the same

US8733788B2 · kind B2 · utility

Assignee

• Autoliv Development AB · SE

Inventors

• Hugh Finn · Grafton, GB
• Ralf Koehnen · Cologne, DE
• David Stow · Gothenburg, SE
• Gary Wootton · Stafford, GB
• Altay Kismir · Tilbury, CA
• Will Winzinger · Schreiber, CA
• Gonzalo Alves · Schreiber, CA

Key dates

• Filing date: Mar 17, 2011
• Grant date: May 27, 2014
• Expiry date: Mar 27, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/3366
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A method of forming a fabric for an air-bag, the method comprising providing a plurality of yarns, each yarn being formed from a plurality of individual fibres; applying an activatable additive or coating to each yarn, the additive or coating initially not being activated and wherein, prior to activation, the additive or coating presents little or no impedance to the relative movement of the fibres within the yarn and, following activation, the additive or coating binds fibres within the yarn to one another to prevent or hinder relative movement of the fibres in the yarn with respect to one another; and passing the yarns through an activation zone including a compressing component which applies a compressive force to the yarns, the additive or coating being activated as the yarns pass through the activation zone so that the yarns each have a substantially flat configuration.