15KW to make a single sheet of plastic. That is practically the entire capacity of a residential power feed.
And “several sheets per day”. Ouch.
If I were seeing a plastic recycling facility on How It’s Made I would expect to see a continuous feed system, with elaborate heat scavenging systems to preheat the ingredients while cooling the product.
I’m not sure how you scale such a thing down to cottage industry scale. Preheating to around 60° could be reasonably done by amateurs but this stuff goes up to at least 350° to melt plastic.
Am thinking propane tanks.
Working with those temps probably not appropriate for an office environment, but on a porch or well-ventilated garage, should economically outperform 110V pretty well.