The die head of the film blowing machine is composed of the mold body (mold core, mold tube, die ring) and heater (heating ring). The first choice of material is to select the corresponding material. The second step is forging. The material is forged into the rough embryo of each part of the mold. The molecular structure of the forged embryo is more compact. The third is to carry out lathe processing, Turn the die head according to the design drawing of the die head, and use high-precision lathes and skilled lathe masters as much as possible during lathe processing. Fourth It is polishing, polishing the runner part of the mold of the car, the better the smoothness, the better the film blown out, and the less silk road. The fifth is chrome plating, put The runner part of the polished mold is plated with chromium, so that the runner part has a very hard layer of chromium, which increases the wear resistance and corrosion resistance of the die and then polishes it. Can make the mold not easy to damage and not easy to produce retained burnt material. Then install each part of the mold, and put on the heating ring, and you're done. mold According to the characteristics of LDPE, HDPE, LLDPE three kinds of polyethylene, the head structure has been selected and finalized after many comparison tests. It has high internal pressure and extrudes. Stability and uniformity, good film strength, no gaps and good matching with the extruder of this unit, etc. Simultaneous conversion of three kinds of polyethylene and mixed materials, regeneration No need to replace die head for blown film production based on material ratio
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