Not sure if this will help someone but maybe.
http://www.psiurethanes.com/polyurethane_products/polyurethane_precision_sheets.html
What is the sheeting used for?
Would it be used like sheet wax? Or… Some custom orthopedic facilities cure prepregs between 2 sheets of LDPE so both sides of the orthodic are smooth. Is the urethane used the same way?
Besides being a toughening layer for impact protection in panels, the only thing I can think of a hard shore sheet would be a cutting table top. Let’s the knife slide into the plastic, andcut through the fibers, and will self heal (unlike having a VERY scored lexan top…)
OLFA cutting boards