There are two main reasons “they” gave up…
1) The processor (aka The Beast) couldn’t run for more than a short period of time before the byproduct, black gooey carbon gunk, caused The Beast to break down…
2) The process was never profitable, even after trying to add fuel to dilute the liquid plastic…
It’s been proven time and again it’s much better to use discarded plastics for recycling into various building materials used in construction of roads, wood products and various other products…
No amount of begging to Heddle will change that…