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Originally Posted by jr_tech
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We're probably going to get yelled at soon for hijacking the thread, but it seems like an important topic.
I don't think it was PVB. I'm old enough to remember the side windows in cars using it and they never developed cataracts. PVB as used in automotive glass is also used in sheet form to do the bonding under heat and pressure. I think using it with CRTs would have required doing the reaction of the PVA with butyraldehyde in place, which sounds difficult.
But I don't know for certain. PVA seems to be mentioned in all of the old threads and Scotty used to use PVA and eventually switched to just attaching the safety glass with the tape, if I understand correctly.
http://www.videokarma.org/showthread...ight=cataracts
John