Screw extruder for producing a multilayer product, e.g. from thermoplastics, comprises two sets of inlets and outlets for producing two extrudates

摘要

Screw extruder for producing a multilayer product comprises two sets of inlets and outlets for producing two extrudates, where the outlets are connected to a device for forming the product from multiple layers of the two extrudates. An independent claim is also included for producing a product comprising multiple layers of different materials by extruding two extrudates and using the extrudates to form the layers of the product.