High-speed film blowing machine

These two methods of plastic film degraded by the film machine have different characteristics due to the large difference in process flow. According to experts, the process flow of the solution casting method is relatively simple, but the product quality is not easy to control, the film output rate is low, the energy consumption is high, and the equipment investment is large; while the extrusion blown film method is more efficient in terms of product quality and production efficiency. The extension method has been significantly improved. However, experts also pointed out that the PVA in the extrusion blown film method must be modified. After pre-granulation, the process and the addition of auxiliary materials are increased. The resin and film must be heated repeatedly during the entire production process, and the film must be kept in the film. 15% to 35% moisture content, complex process, technical difficulty, high energy consumption; and film forming, stretching, and setting are performed at the same time, molecular chains are difficult to move, the degree of orientation is poor, and the strength of the resulting film is not high and insufficient Give play to the inherent characteristics of PVA resin.