What is PP (Polypropylene)?

Polypropylene is a thermoplastic material. It belongs to the group of polyolefins and its properties are similar to polyethylene. The methyl group present improves the mechanical properties and thermal resistance. The density of PP is between 0.895 and 0.92 g/cm³. This makes PP the standard plastic with the lowest density.</p

The melting and continuous service temperature of polypropylene are higher than those of polyethylene, as are numerous mechanical properties (e.g. stiffness and hardness).

Polypropylene can be used permanently between approx. 5°C and approx. 85°C. Below 5°C it becomes brittle. This temperature range can be changed in both directions.

Polypropylene is resistant to fats and almost all organic solvents at room temperature, with the exception of strong oxidising agents.

Non-oxidising acids and alkalis can be stored in PP containers. ATTENTION - at elevated temperatures, PP can be dissolved in solvents (e.g. xylene, tetralin and decalin). PP is virtually odourless and ideally suited for applications in the food and pharmaceutical sectors; it is physiologically harmless and easy to recycle.