Laminated Glass-Single piece thickness
Most laminated glass are made with 2 piece same thickness single pieces.
Such as 21.52 PVB laminated glass,17.52mm laminated glass,12.76mm laminated glass,20.89mm SGP laminated glass,why the laminated glass shall be made with equal thickness single pieces?
1.Glass flatness.As we know that after tempering process,glass will has overall bow and local bow.thin glass,especially 3mm and 4mm will have larger overall bow,while thicker ones flatness is much better.
If we laminate 4mm glass with 6mm glass,the glass flatness difference will cause imbalance pressure,the PVB can cohere the glass temperately,but several years after installation,delamination will happen.
The another result of the glass flatness is:Some glass manufacturers has very bad tempering quality ,glass overall bow and local bow is near or exceed the standard requirement,when laminating different thickness tempered glass,the non-conforming ratio will be very high,the typical problems are:Bubbles at glass edge and glass center,the costs is higher than equal thickness laminated glass.
Thicker glass has higher strength,if the two glass made of laminated glass has different thickness,the strength difference will decrease the overall strength of the laminated glass.
Morn can supply all kinds of PVB and SGP laminated glass,no matter tempered or anneal laminated glass,we suggest designers and clients use equal thickness glass to make laminated glass.
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