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    What is the difference between PE high pressure film blowing machine and double layer co-extrusion machine?

    release time:2020-03-30  viewed:748次
    The function of monolayer high pressure membrane is limited, including the use of a variety of additives, double layer co-extrusion is different, is multi-functional products.
    Double layer co-extrusion film blowing machine has two extruders, high output. There is not much difference in power consumption between the two machines at the same yield, and no matter what the machine, it takes the same amount of energy to melt the same weight of plastic particles. If the maximum extrusion volume is the same as the single-layer machine and the double-layer co-extrusion film blowing machine, the electric bill is theoretically the same!
    In terms of products, the double-layer co-extrusion film blowing machine can make some functional films, such as the inner black outer white (grey) film for express bags. The milk-white film that milk bag USES adds color mother and packing namely outer layer, inner layer USES common material, because inner layer is contacted with liquid, cannot coloured mother and milk-white packing, press write something ash to dissolve inside milk, do not accord with edible standard. Of course, most milk film with three - layer co-extrusion film blowing machine, the best is the middle layer with nylon.
    Three-layer co-extrusion film blowing machine from the cost of the double layer co-extrusion film blowing machine must be a little higher, including waste. Energy consumption, in the ingredients, preheating, plastic extrusion, blowing up, wind ring cooling, traction roller traction, corona treatment, film winding and other procedures are basically the same, the basic difference in energy consumption.

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