Are you already fed up with it: your drooping and shabby material of headliner in your car, yet another usual and very annoying nuisance, which makes the vehicle feel as if it was old and dilapidated, even if otherwise it is quite in good condition? Never mind, help is at hand.
This involves adding chalk to the PLA to act as a catalyst, and then rapidly heating and cooling the PLA resin during production. The result is a product which is heat stable to 90ºC or 194ºF