The typical polypropylene fiber that we have co-mingled with natural fiber to create panels in the automotive interior are selected because they are low-cost and they melt at a low temperature.
The panels made with the current polypropylene fiber have a difficult time passing the new automotive test standards which require 120 ⁰C sunlamp. This test can cause distortion and warping. The upper limit for process temperature is 200 ⁰C to protect the natural fiber from decomposition.
We are interested in any type of thermoplastic fiber for optimum process and in-application heat performance.