Quote:
Originally Posted by Username1
...While this front glass would protect the more delicate tube from a direct hit, I think the bonded glass with the PVA was closer to safety auto glass with plastic between the two pieces of glass for strike protection, while the front glass could also have contained lead for radiation.....
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Think about it - an auto windshield has ambient air pressure on both sides. The plastic is definitely strong, strongly bonded to the glass, and stretchy enough to capture the glass shards (and sometimes even the impacting object - but not if it's moving too fast).
Capturing the flying glass from an implosion seems hopeless, and I don't think the bonding material had the strength to prevent anything flying even if the CRT wasn't under vacuum. Simply an optical sealant, is my guess.