LDPE was the first of the polyethylenes to be developed. It is the least expensive and has the most flexibility. It’s heat resistance is the lowest in the family with a maximum service temperature of 160 degrees to 180 degrees fahrenheit.
LDPE also meets FDA requirements. There is also a speciality grade (LLDPE) with better impact, heat-seal strengths and environmental stress crack resistance.
It’s wide use is in merchandise packaging but it also is used in some medical equipment and computer hardware, just to name a few.
Heat & Chemical Resistance
LDPE has low temperature impact resistance at 180 °F and although it is chemical resistant, it can be attacked by strong oxidizing acids. It is also vulnerable to stress cracking, especially if detergents are used.
LDPE is Semi-rigid, translucent, very tough, weatherproof, good chemical resistance, low water absorption, easily processed by most methods, and low cost.
LDPE is rated NR