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随着PET瓶坯的普及应用,对于生产PET制品的注塑机要求也越来越高,注塑螺杆就是影响PET制品的质量和产量的其中一个关键因素。由于我司原有的PET专用机螺杆存在塑化时间长,熔胶压力大,塑化效果不良等问题,经过分析决定采用行业推荐的新型波形螺杆,现场与我司的PET熔胶螺杆熔胶效果进行对比,从熔胶压力、塑化时间和理论产量三方面进行定量比较,得出波形螺杆在注塑机上对于PET的塑化有良好效果,也为后续一系列机型的PET专用螺杆的设计提供数据支持和设计参数。
With the popularization and application of PET preforms, injection molding machines for producing PET products have become increasingly demanding. Injection molding screws are one of the key factors that affect the quality and output of PET products. Because of our existing PET special machine screw plasticizing a long time, melt pressure, poor plasticization and other issues, after the analysis decided to adopt the industry’s new wave-shaped screw, the scene with our PET melt glue The results are compared from three aspects: melt pressure, plasticizing time and theoretical yield. It is concluded that the waveform screw has a good effect on the plasticization of PET on the injection molding machine, and also for the follow-up series of PET special screw Design provides data support and design parameters.