PP, standard – natural fibre (polypropylene)
Trade Name : Generic grade
Reinforced natural fibres
✓ This material meets the criteria ~ Specialized grades may meet this criteria
| Density | 0.996 to 1.02 g/cm³ ISO 1183 |
|---|---|
| Charpy notched impact | 2.3 to 9.6 kJ/m2 |
| Flexural modulus | 810 to 4160 MPa ISO 178 |
| Flexural resistance | 40 MPa |
| Tensile modulus | 824 to 4810 MPa ISO 527-1 |
| Tensile resistance | 29.8 to 40.3 MPa ISO 527-1, -2, Yield |
| Tensile strain | 2.3 to 13 % ISO 527-1, -2, Break |
Injection at 200–260 °C, mould at 20–80 °C. Excellent flow properties, suitable for complex thin-walled parts. Significant shrinkage (1.0–2.5 %) must be taken into account during mould design. No pre-drying required. Take care to prevent warping of flat parts.
PP (code 5) is recyclable. Recycling streams exist for food packaging, the automotive industry, and general industry. The quality of recycled pellets is sufficient for many applications.
PP is among the most widely used food contact materials (FDA, EU Regulation 10/2011). Approved for all types of food including fatty and acidic foods. Resistant to steam sterilisation (PP random copolymer).