Windshield Repair Forum

Can someone please explain what PVB stands for. I know what part of the windshield it is but not sure what the abbreviation stands for. Also what is the PVB material? Just curious. Thanks.

Polyvinyl butyral

Laminated glass, commonly used in the automotive and architectural fields, comprises a protective interlayer, usually polyvinyl butyral (PVB), bonded between two panes of glass. The bonding process takes place under heat and pressure. When laminated under these conditions, the PVB interlayer becomes optically clear and binds the two panes of glass together. Once sealed together, the glass "sandwich" (i.e., laminate) behaves as a single unit and looks like normal glass. The polymer interlayer of PVB is tough and ductile, so brittle cracks will not pass from one side of the windscreen to the other.

Annealed glass, heat-strengthened or tempered glass can be used to produce laminated glass. While laminated glass will crack if struck with sufficient force, the resulting glass fragments tend to adhere to the interlayer rather than falling free and potentially causing injury.

In practice, the interlayer provides two beneficial properties to laminated glass panes: first, the interlayer functions to distribute impact forces across a greater area of the glass panes, thus increasing the impact resistance of the glass; second, the interlayer functions to bind the resulting shards if the glass is ultimately broken. Thus, the benefits of laminated glass include safety and security.

Good bedtime reading ( lol)

That's cheating I was going to copy and paste the same bit.