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High speed and high productivity die head

Date：

2019-11-05

  • High speed and high productivity die head
  • High speed and high productivity die head
    The development requirements of film blowing machine: high product quality, large production capacity and low energy consumption. Our company has independently developed high-speed and high-capacity die heads by introducing and absorbing foreign advanced technology. The relationship between melt flow rate, flow rate and cavity pressure inside the die was calculated by mathematical method, as well as the disturbance of the whole melt flow caused by the differential flow produced by coextrusion of raw materials with different viscosities. The change in physical means and manufacturing reduces the pressure of the melt when extruding the die, reduces the functionality of various raw materials with different viscosities in the melt, and the melt is extruded uniformly with uniform flow to avoid melt damage. The die head has a reasonable and compact structure, accurate, short and smooth flow channel distribution, no dead corner accumulation, reduces the disturbance in the melt movement, is suitable for extrusion molding of various materials, and overcomes the flow anomalies caused by the common extrusion of a variety of materials with different viscosities. With few crystal points, the output is large, and energy consumption is low. Compared with the conventional die head, the extrusion amount is increased by about 40%.

High speed and high productivity die head

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