Benecke-Kaliko Ag

Thomas Malner

Jürgen Bühring

Roland Wolff

Stefan Sostmann

Joseph Mani

Juergen Buehring

Volker Huelsewede

Volker J Hülsewede

Daniel Weber

Volker Hülsewede

Jürgen BÜHRING

Volker HÜLSEWEDE

A film including a top ply, where at least the top ply contains 15 to 90 phr of at least one ethylene-based polymer having a Mooney viscosity (ML1+4, 121&#xb0; C.) of 50 to 80 Mooney units and 10 to 85 phr of at least one polypropylene having an ISO 178 flexural modulus of greater than or equal to 400 MPa, and the film may be a single-ply or multi-ply film. In some aspects the ethylene-based polymer has a crystallinity of less than or equal to 30%. The top ply may further include at least one compatibilizer, which has, in some cases, a melt flow index MFI (230&#xb0; C., 2.16 kg) of 0.1 to 4.0 g/10 min.

Film and method for producing same

A method for producing a multi-layer plastic film comprising at least one compact cover layer and at least one layer which is arranged under the cover layer and made of extruded foamed plastic (foam layer), wherein the compact cover layer is connected to the foam layer thermally or by adhesion after extrusion and cooling of the foam layer to below the melting temperature. The layer made of foamed plastic is generated by blowing a propellent which is under positive pressure into a plastic melt during the extrusion process and by subsequently relaxing the propellent which is under positive pressure, wherein the foamed plastic is at first not cross-linked and is cross-linked together with the compact cover layer, in particular by high-energy radiation, only after the foam layer and the compact cover layer have been connected.

Method for producing a multi-layer plastic film

Growing community of inventors

Göppingen, Germany

Thomas Malner