Annealing or stress relieving of plastics is an important step in plastic machining. While not all components require annealing, there can be important advantages for some materials and part configurations. many manufacturers believe that their own internal annealing process is sufficient. Our experience shows that the batch processing annealing performed by material manufacturers is insufficient and yields inconsistent results.

Piper Plastics has programmable ovens for precise control of the stress relieving process. Our proprietary annealing processes allow us to create highly consistent material qualities from one lot to the next.

Advantages of stress relieving of the material include: Most stable material Lowest stress possible Better machinability of the material Better flatness control Better chemical resistance