About twin-wall polypropylene

Twin-wall polypropylene is an extruded sheet with rectangular flutes running along its length. Its structure is similar to that of twin-wall polycarbonate.

Its distinguishing properties are high flexibility, low weight, moisture resistance, excellent chemical resistance, impact resistance, a service temperature of up to 110 °C and suitability for food contact; it is not UV-resistant.

Additives used during manufacture can give the sheets extra properties: better printability, improved fire resistance, higher UV resistance, better bonding and greater stiffness.

Twin-wall polypropylene is available clear or coloured.

It is widely used for packaging: boxes, containers, crates, dividers and folders. It is a good replacement for corrugated cardboard when packaging has to hold up in damp conditions.

In outdoor advertising it is used for lightweight hanging displays and as a substrate for screen printing.

Twin-wall polypropylene can be die-cut on equipment designed for corrugated cardboard.

It is resistant to aqueous salt solutions, alkalis and mineral acids.

Its Vicat softening point (10 N) is about 140 °C, although plastic deformation under heat already begins at 70 °C.

When burned, twin-wall polypropylene releases only carbon dioxide and water.

It gives off no harmful gases in use and is safe to use.