PROCESSING TRIVEX® MATERIAL FOR LENSES

TRIVEX^®, the latest in lens technology from PPG, is a notoriously difficult material to process. Due to the material’s low melting temperature, the average roughing wheel cannot process Trivex^® material lenses.  Frictional heat produced by the contact between the wheel and the lens is too high for the material to withstand, and the lens material begins to soften.  At this point, the wheel is tearing the lens rather than cutting it.

Our patent-pending TRIO^® wheel designed for processing Trivex^® lenses features a new technology, proven to cool the surface of the wheel and lens during processing, so that the lens remains firm enough to be cut with speed and accuracy.  During testing, our TRIO^® wheels processed Trivex^® lenses 64.4% faster when running wet and 61.5% faster when running dry. Decreasing the temperature also eliminates excess smoke and swarf build up.  Most importantly, labs will notice a significant reduction in the number of rejected lenses due to internal stress, axis problems, and chipping.

TRIO^® wheels are designed for both older and newer machines, with and without a Trivex^® setting.  In both cases, simply run the wheels on your machine’s Poly setting.  The new Trivex^® settings slow the cutting process in an attempt to decrease the build-up of frictional heat.  However, this considerably lengthens the processing time.  For optimal cutting speed and performance, process your Trivex^® lenses on your Poly setting every time.

Please see the table below for Trivex^® lens manufacturers, distributors, and brand names.
Trivex^® Material Reference Guide for EyeCare Professionals

For more information on Trivex^® click here:
http://corporateportal.ppg.com/NA/chemicals/Optical/Trivex/