It’s lightweight yet super-strong.
And why many carmakers use HDPE fuel tanks—lighter weight car parts can help increase fuel efficiency.
It’s impact resistant.
It’s long lasting and weather resistant
It resists mold, mildew, rotting, and insects
It’s easily molded into nearly any shape, providing one of the primary benefits of most plastics: malleability.
Vi sono tre tipi di polietilene:
-HDPE (High Density)
Flexible, translucent/waxy, weatherproof, good low temperature toughness (to -60'C), easy to process by most methods, low cost, good chemical resistance.
-LDPE and LLDPE (Low Density and Linear Low Density)
Semi-rigid, translucent, very tough, weatherproof, good chemical resistance, low water absorption, easily processed by most methods, low cost.
PHYSICAL PROPERTIES:Tensile Strength
0.20 - 0.40 N/mm², Notched Impact Strength
no break Kj/m², Thermal Coefficient of expansion
100 - 220 x 10-6, Max Cont Use Temp
65 oC, Density
0.917 - 0.930 g/cm3Film for packaging is one of the largest markets for low density polyethylene. Low cost, ease of sealing and good product protection have helped to make film the largest polyethylene market.