Ultramid A3K splay issues
Published: February 12th, 2013
We are using Ultramid A3K to mold reflectors that get vacuum metalized. Highly cosmetic parts. First, is this a bad choice of resin for our application? Second, every mold and press we run this resin on has a high scrap rate due to splay. We have checked our drying system and found at least -40 dew point resin in and out of the hopper. We are not exceeding throughput of the hopper.
When processing we have been everywhere from extreme low to high as far as recommended processing conditions. Any help with this splay issue would be greatly appreciated.