Tinted roof, help needed

[Ozruss90]

Originally Posted by spork2367

From the other forum off an 87 top:

"ACRIVUE A"
"DOT 66 AS5"
"M-178 0757"
"ALMAC PLASTICS"

The Acrivue line included manufactured acrylic formed windows for planes and panels for cars.

The tops are likely manufactured similar to the windshields with the center layer being a colored mylar film layer which may have UV filters.

Acrivue A was likely aerospace grade poly A (ASTM D-4802).
The Almacoat 2000 is likely an upgraded aerospace grade poly 2000 (MIL-P-25690). It was more resistant to crazing and cracking than poly A.

The original could have been coated to give it better protection from gas, oil, and grease, but acrylic is very scratch and UV resistant on it's own, so buffing won't really affect longevity.

The problem tracking some of this info down is that so many plastics manufacturers have come and gone and they all used their own trade names for industry standard materials. US cast acrylic and European cast acrylic is high quality. China's sucks, India is marginal. I used to manufacture a lot of parts for GE Inspection Technologies that used acrylic blocks with complex geometry that we machined for ultrasonic test equipment.

Thanks Spork,
A wealth of information on the subject matter.

Cheers,
Russell down under.