... . Stable,good cooling 2. High speed,co-extrusion 3. High output 4. Durable,hard steel made Stretch ... .The width from 20mm to 2000mm, single layer to 2 layers, 3 layers, 5layers and so on.Three layers ... :1) Main parts: one electrical power control box,3 extruders, one die,2 cooling forming rollers,on-line ... winding shafts etc.2) Layers to be produced: 3 layers(one side sticky or 2 sides sticky stretch ...