Safety window comprising self-healing polymeric layer

US4232080A · kind A · utility

Assignee

• Saint-Gobain Industries · FR

Inventors

• Roger Orain · Vaucresson, FR
• Hans Heuser · Aachen, DE
• Hans Ohlenforst · Aachen, DE
• Rudolf Pelzer · Herzogenrath, DE

Key dates

• Filing date: Mar 10, 1977
• Grant date: Nov 4, 1980
• Expiry date: Mar 10, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/3163
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A safety window comprises at least one sheet of glass, which may be tempered, and, on the side thereof facing a interior of the vehicle in which the window is to be mounted, a sheet of transparent plastic material bonded adhesively thereto, the plastic material possessing a high capacity of elastic deformation, a modulus of elasticity below 2,000 daN/cm.sup.2 and an elongation to rupture in excess of 60% with less than 2% plastic deformation, the plastic material having self-healing properties and capable of protecting occupants of the vehicle from being cut if said sheet of glass is broken.