PEHD (Polyéthylène Haute densité), HMW
✓ This material meets the criteria ~ Specialized grades may meet this criteria
| Density | 0.943 to 0.957 g/cm³ ISO 1183 |
|---|---|
| Charpy notched impact | 80 kJ/m2 |
| Flexural modulus | 990 to 1110 MPa ISO 178 |
| Flexural resistance | 25 MPa |
| Tensile modulus | 503 to 1200 MPa ASTM D882 |
| Tensile resistance | 18.0 to 26.0 MPa ISO 527-1, -2, Yield |
| Tensile strain | 500 to 820 % ISO 527-1, -2, Break |
Injection at 180–250 °C, mould at 20–60 °C. Low viscosity → good filling. High shrinkage (1.5–3.0 %) → adjustment of mould dimensions essential. Crystallisation influenced by cooling rate. No pre-drying required.
HDPE (code 2, LDPE code 4) is one of the most recycled plastics globally. Well-established collection streams. Mechanical recycling is common. The value of recycled material is significant.
PE is one of the most approved materials for food contact (FDA, EU regulation, EFSA). Widely used in food packaging, drinking water pipes (HDPE PE 100), and bottles. Excellent chemical inertness for all types of food.