Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Patent
1991-05-07
1994-02-08
Buffalow, Edith
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
4284233, 4284256, 428906, 428912, 156 99, 156313, 156106, 156315, B32B 2700
Patent
active
RE0345385
ABSTRACT:
An integument which contributes to the maintenance of surface integrity is disclosed, particularly a sheet for use in preparing laminates, such as vehicle windshields, in which an energy absorbing ply, for example, a ply of poly(vinyl butyral), is sandwiched between two glass plies, the sheet of this invention being applied to an exposed surface of one of the glass plies and having one surface layer comprising a thermoplastic polyurethane capable of adhering to a glass or plastic substrate and the other surface layer comprising a thermoset polyurethane having antilacerative, self-healing and anti-ablative properties; there is further disclosed the manufacture and application of such a sheet as a ply facing the interior of a vehicle, thereby forming a windshield the inwardly exposed surface of which comprises a thermoset polyurethane which protects the vehicle occupants from facial lacerations caused by windshield impact and which has self-healing properties.
REFERENCES:
patent: 3808077 (1974-04-01), Rieser et al.
patent: 4218500 (1980-08-01), Radisch
patent: 4643944 (1987-02-01), Agethen et al.
Agethen Heinrich
Gesenhues Paul
Jandeleit Otto
Radisch Helmer
Schafer Wolfgang
Buffalow Edith
Saint-Gobain Vitrage
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