B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 17/10 (2006.01) B32B 3/30 (2006.01) B32B 37/30 (2006.01) C03C 27/12 (2006.01) C08J 7/04 (2006.01) C09J 7/02 (2006.01)
Patent
CA 2058411
A laminated glazing unit having improved impact strength comprising a), b) and c) in sequence: a) a glass layer; b) a plasticized layer containing partial polyvinyl butyral; c) another glass layer; and d) means, preferably a multiplicity of spaced projections, dispersed on the surface of at least one of the foregoing layers, preferably the plasticized layer, capable of resisting adhesion to the layer with which it is in contact, the area without said dispersed means (e.g. between projections) of the layer having such dispersed means having high affinity for adhesion to the layer with which it is in contact, such laminated glazing at a specific pummel adhesion having a greater mean break height than that of a laminated glazing containing layers a) b) and c) but without d). The dispersed means may be on the surface of a glass layer but is preferably on the plasticized layer.
Laporte Peter Daniel
Simon Robert Herbert Melvin
Mcfadden Fincham
Monsanto Company
Solutia Inc.
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