As a type of safety glass, laminated safety glass is widely used in windows, doors, curtain walls, balustrades, canopy, fencing, showcases, etc.
Choosing the suitable PVB thickness is critical for improving the laminated glass safety coefficients. PVB basic thickness starts from 0.38mm, 0.76mm, 1.14mm, 1.52mm to multiple thicknesses 1.90mm, 2.28mm, 3.04mm, etc.
Here is a guide on how to choose the suitable thickness PVB interlayers for the glass you’re using. Bullet-proof glass, multi-layer laminated glass, and aquarium laminated glass are not included in the following principles.
Annealed Laminated Glass
| Glass Type | Glass Thickness | PVB Thickness (mm) | |
| L≤800mm | L>800mm | ||
| Annealed Laminated Glass | ≤6mm | 0.38 | 0.38 |
| 8mm | 0.38 | 0.76 | |
| 10mm | 0.76 | 0.76 | |
| 12mm | 1.14 | 1.14 | |
| 15/19mm | 1.52 | 1.52 | |
Take the thicker glass as the standard when choosing the PVB for the laminated substrates with different thicknesses.
Flat Tempered & HS Laminated Glass
| Glass Type | Glass Thickness | PVB Thickness (mm) | ||
| L≤800mm | 800mm<L≤1500mm | >1500mm | ||
| Flat Tempered/Heat-strengthened Laminated Glass | ≤6mm | 0.76 | 1.14 | 1.52 |
| 8~12mm | 1.14 | 1.52 | 1.52 | |
| ≥15mm | 1.52 | 2.28 | 2.28 | |
The overall bow has to be smaller than 0.3%.
A minimum 1*0.38mm interlayer must be added if different thickness substrates are used.
A minimum 1*0.38mm interlayer must be added if only one piece of glass is tempered or heat-strengthened.
A minimum 1*0.38mm interlayer must be added if glass with irregular shapes.
A minimum 1*0.38mm interlayer must be added if the glass is close to a square shape.
Take the thicker glass as the standard when choosing the PVB.
Flat Tempered, HS Laminated & Hot Bend Laminated Glass
| Glass Type | Glass Thickness | PVB Thickness (mm) | |
| R>3m | R≤3m | ||
| Flat Tempered/Heat-strengthened Laminated Glass | ≤8mm | 2.28 | 3.04 |
| ≥10mm | 3.04 | 3.04 | |
| Heat-bent Glass | ≤6mm | 0.76 | 1.14~1.52 |
| ≥8mm | 1.14 | 1.52 | |
Take the thicker glass as the standard when choosing the PVB.
Elite Safety Glass will be your perfect choice when talking about glass processing techniques. Feel free to drop us an email for anything details you want to discuss.
