What are the temperature limits for heat-bending polypropylene sheets into curves?
Heat-bending polypropylene sheets into curves requires precise temperature control to avoid material degradation. The ideal temperature range for bending polypropylene is between 150°C and 160°C (302°F to 320°F). Below 150°C, the sheet may not soften sufficiently, leading to cracks or uneven bends. Exceeding 160°C risks melting or warping the material.
Polypropylene, a thermoplastic, becomes pliable within this range, allowing it to be molded into smooth curves. For consistent results, evenly heat the sheet using an oven or heat gun, then shape it quickly before cooling. Always test small samples first to adjust for thickness variations. Proper temperature management ensures durable, high-quality bends without compromising structural integrity.
