PP Injection Mould Process Parameters

  • The temperature of the barrel of PP injection mould process parameters

                    Feeding area   30°C-50°C (50°C)

                     Area 1        160-250°C (200°C)

                     Area 2        200-300°C (220°C)

                     Area 3        220-300°C (240°C)

                     Area 4        220-300°C (240°C)

                     Area 5        220-300°C (240°C)

                     Nozzle        220-300°C (240°C)

  • The temperature of the melting stock of the PP injection mould process parameters:   220-280°C
  • The stable temperature of the charging barrel of the PP injection mould process parameters :   220°C
  • Mold temperature of the PP injection mould process parameters:          20-70°C
  • Injection pressure of the PP injection mould process parameters

It has perfect flow properties, avoid using too high injection pressure 80-140MPa (800- 1400bar)       

  • Holding pressure of the PP injection mould process parameters:  

You should avoid shrinkage about the product, and it needs long time to hold the pressure (about 30% of the cycle time); about 30%-60%of the injection pressure  

  • Backpressure of the PP injection mould process parameters 

5-20MPa (50-200bar)         

  • Injection speed of the PP injection mould process parameters     

It needs high injection speed about the thin wall package containers; medium speed is more applicable to other plastic products.      

  • Screw running speed of PP injection mould process parameters          

High screw speed is allowed, you should finish the plasticizing process before the end of the cool time.    

  • Measurement stroke of PP injection mould process parameters          0.5-4D
  • Scrap quantity of PP injection mould process parameters              

2-8mm, it depends on the measurement stroke and screw speed.

  • Advanced parch of PP injection mould process parameters                 

Not needed; if the holding condition is not good, it can be parched for one hour in the temperature of 80°C

  • Recycle rate of PP injection mould process parameters                100%
  • Shrinkage rate of PP injection mould process parameters:           1.2%-2.5%
  • Machine lie time of PP injection mould process parameters      

You do not need other materials to clean the equipment

  • Charging barrel equipment of PP injection mould process parameters       

Standard screw, standard three-stage screw used, for the products of the package containers, mixing section and teh shape of the shear section is special

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