Security glazing

Details Security glazing Security glazing

1984-08-06

1986-06-17

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428214, 428426, 428437, 428911, B32B 1710

Patent

active

045956243

ABSTRACT:
A security glass which possesses substantial resistance to penetration by impact by a heavy implement and which exhibits only a small amount of spall formation is a glass flexible bonding material, e.g. polyvinylbutyral, laminate in which the layer of flexible bonding material positioned other than at the forwardmost flexible bonding material layer position possesses increased thickness. The rearmost glass layer is generally relatively thin and is preferably chemically toughened.

REFERENCES:
patent: 3624238 (1928-05-01), McKenzie
patent: 3864204 (1975-02-01), Shorr et al.
patent: 3904460 (1975-09-01), Comperatore
patent: 4130684 (1978-12-01), Littell, Jr. et al.

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