In a theoretical analysis of draft resonances observed during extrusion casting of plastic films, it was noted that cooling of the extruded polymer plays a major role in stabilising the casting process and that isothermal melt draw becomes unstable at draft ratios greater than 20. Draft resonance in

Coated PVDC barrier packaging film

The method through the co-extrusion composite equipment (co-extrusion blow moulding or co-extrusion casting equipment) will be pressure-sensitive adhesive layer and the substrate layer synchronous extrusion, composite, surface protection film, this method is the application of co-extruded production

Firstly, let's understand what is a coating machine?Coating machine is mainly used for film, paper and other surface coating process production, this machine is the rolls of substrates coated with a layer of specific functions of the glue, paint or ink, etc., and drying and winding.The use of specia

I. Production of polythene heat-shrinkable filmThe production of polyethylene heat-shrinkable film for packaging can be carried out either by the single-bubble method (direct blow-moulding, with only one blister) or by the double-bubble method (firstly making a blank film, which is then heated an