The forming method of Wuhan modern plastic film
DATE：2020/9/25 8:33:51 / READ： / SOURCE：This station
The forming method of Wuhan modern plastic film
There are a variety of molding methods for plastic film, mainly including extrusion molding (including extrusion blown film, extrusion cast film method, extrusion composite film method), solution casting molding, calendering molding, and dry-type secondary molding processing. Composite membrane method, mechanical processing method, etc. www.handern.com Non-woven equipment
Extrusion of film
Film extrusion molding is a film molding method with an extruder as the main molding equipment. It includes extrusion blown film method, extrusion cast film method, extrusion composite film method and so on. The extrusion blown film method is divided into flat blowing method, upward blowing method, downward blowing method, etc. according to the different methods of film bubble expansion and cooling. Up-blowing extrusion blown film is the most commonly used method for plastic film forming; down-blowing extrusion blown film is the easiest production method for highly transparent plastic films. The extrusion blown film method can produce single-layer and multi-layer films. If the process of double inflation of the film bubble is adopted, the extrusion blown film method can produce biaxially oriented film and heat shrinkable film. The film shape produced by the extrusion blown film method is simple or sheet-like film. Plastic materials commonly used to produce films by extrusion blown film method include LDPE, HDPE, LDPE, P, EVA, PVC, PA, BS, PVDC, etc. www.handern.com Non-woven equipment
Extrusion cast film method is also called flat film method or "T"" film method. It is mainly used to produce single-layer or multi-layer sheet-like films. Extrusion cast film can be processed by subsequent stretching process to produce single Stretched and biaxially stretched films, air-permeable and water-impermeable films, and heat-shrinkable films are the fastest growing film forming technologies in recent years. The plastic materials used to produce films by extrusion cast film methods mainly include LDPE, LDPE, and EVA , PP, PET, PA, etc. www.handern.com non-woven equipment
The extrusion composite film method is to directly coat the extruded hot-melt film on the continuously conveyed sheet and film materials such as paper, fabric and plastic film, and then cool and press the composite film to form a composite film. The extruded composite film does not use solvents, and the extruded hot melt and substrate can be two different materials. The plastic materials used to produce composite films by extrusion compounding mainly include FE, PA, PET, EVA, ENOH, EM ionic polymers, etc. www.handern.com Non-woven equipment
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