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In-mold Melt Front Rate Control Using a Capacitive Transducer in Injection Molding

  • F. Zhou , K. Yao , X. Chen and F. Gao
Published/Copyright: April 6, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 24 Issue 3

Abstract

In the filling phase of injection molding process, melt-front rate plays a particularly important role in determining the part quality. Prior researches recommend a constant melt-front rate for this phase. A measurement device based on a capacitor principle has been developed. It has been shown that this sensor is effective to measure online and continuously melt-front position in mold cavity. Based on this sensor, this work develops and tests closed-loop control system of direct in-mold melt-front rate control. Several advanced control algorithms, Generalized Predictive Control (GPC), Iterative Learning Control (ILC), and Generalized 2D Model Predictive Iterative Learning Control (2D-GPILC), are designed, implemented, and tested with different mold inserts. The results show that 2D-GPILC, a combination scheme of feedback and iterative learning scheme, gives the best control results.

∗ Mail address: Furong Gao, Department of Chemical and Biomolecular Engineering, The Hong Kong University of Science & Technology, Clearwater Bay, Kowloon, Hong Kong. E-mail:

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Received: 2008-11-04
Accepted: 2009-02-28
Published Online: 2013-04-06
Published in Print: 2009-07-01

© 2009, Carl Hanser Verlag, Munich

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  6. An Experimental Setup to Measure the Transient Temperature Profiles in Water Assisted Injection Molding
  7. Experimental Investigation and Flow Modeling of Slippage Induced by Additives in Polyolefins in a Modular Co-rotating Twin Screw Extruder
  8. In-mold Melt Front Rate Control Using a Capacitive Transducer in Injection Molding
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  10. Study on Kneading and Molding of PP/TiO2 Nanocomposite
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https://doi.org/10.3139/217.2242

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Investigation of the Thickening Efficiency of HEUR on the Behavior of Two Different Latex Types
  5. Optimization of the Thickness of PET Bottles during Stretch Blow Molding by Using a Mesh-free (Numerical) Method
  6. An Experimental Setup to Measure the Transient Temperature Profiles in Water Assisted Injection Molding
  7. Experimental Investigation and Flow Modeling of Slippage Induced by Additives in Polyolefins in a Modular Co-rotating Twin Screw Extruder
  8. In-mold Melt Front Rate Control Using a Capacitive Transducer in Injection Molding
  9. Structural and Rheological Properties as a Function of Mixing Energy for Polymer/Layered Silicate Nanocomposites
  10. Study on Kneading and Molding of PP/TiO2 Nanocomposite
  11. Sustainable Biocomposites from Rice Flour and Sisal Fiber: Effect of Fiber Loading, Length and Alkali Treatment
  12. On-line Measurement Studies on Orientation Development and Characteristic Short-Period Diameter Fluctuation in High Speed In-line Drawing of Poly(ethylene terephthalate) Fiber
  13. Micro Replication by Injection-Compression Molding
  14. Utilizing Processing Parameters for Evaluating Polymer Viscosity during Plastication in Injection Molding
  15. PPS-News
  16. PPS News
  17. Seikei Kakou Abstracts
  18. Seikei-Kakou Abstracts
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