19 Sep
2014
19 Sep
'14
6:10 p.m.
On 09/19/2014 01:51 PM, Tony Duell wrote:
AS I understand it, the is due to the decay fo the
bonding 'glue' between
the 2 layers of the CRT faceplate. The direct vision tubes (no separate
implosion guard) have a 2-panely faceplate like a car's laminated
windscreen. If the glass breks it will not fly everywhere.
I've heard it suggested that the protective faceplate be reattached
using foam tape around the edges to space it a small distance from the
CRT face. While not the original design, it at least affords some
protection should the CRT envelope fail.
According to a couple of patents, a special epoxy resin was used as a
binder, but I'm not entirely certain. Dow TV720 is sometimes cited.
--Chuck