Definitions for "CO-EXTRUSION"
New, basic plastics materials—"new base polymers" as an engineer would say—are expensive to develop and only come along about once in a decade. But new processing methods such as co-extrusion make it possible to combine existing materials—for example, in the manufacture of UV-resistant polycarbonates. Coextrusion makes it possible to combine different plastic polymers, producing a variety of colors, clarities and modifications (such as flame retardance, impact strength and weatherability).
The process of extruding two or more materials through a single die with two or more orifices arranged so that the extrudates merge and weld together into a laminar structure before chilling.
The technique of extruding two or more materials through a single die being fed by separate extruders.