An Experimental Setup to Measure the Transient Temperature Profiles in Water Assisted Injection Molding
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S.-J. Liu
Abstract
Water assisted injection molding technology has gradually become an important process for making hollow plastic parts, due to its light weight, relatively lower resin cost per part, faster cycle time, and its flexibility in the design and manufacture of plastic parts. Study of the temperature profiles in molded parts is of fundamental importance to a more complete understanding of many complicated phenomena. This report presents a novel experimental setup which allows the in-situ measurement of three-dimensional temperature field in the depth of molded parts throughout the molding cycles. A specific mold equipped with tubular needles for guiding embedded micro-thermocouples was designed and manufactured. Experiments were carried out on a lab developed water assisted injection-molding system, which included an injection molding machine, a water pump, a water injection pin, a water tank equipped with a temperature regulator, and a control circuit. The resin used was semi-crystalline polypropylene. The in-cavity temperature of the polymeric materials during the molding cycle was measured. In addition, an unsteady-state, nonlinear heat transfer model of water assisted injection molding has been proposed to numerically simulate the in-depth temperature profiles. It is shown that the numerical predictions are in good agreement with experimental data. Experimental investigation and numerical simulations of a water assisted injection molding cooling process will provide an improved understanding of the influence of water related parameters on the cooling process of water assisted injection molded parts.
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© 2009, Carl Hanser Verlag, Munich
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Investigation of the Thickening Efficiency of HEUR on the Behavior of Two Different Latex Types
- Optimization of the Thickness of PET Bottles during Stretch Blow Molding by Using a Mesh-free (Numerical) Method
- An Experimental Setup to Measure the Transient Temperature Profiles in Water Assisted Injection Molding
- Experimental Investigation and Flow Modeling of Slippage Induced by Additives in Polyolefins in a Modular Co-rotating Twin Screw Extruder
- In-mold Melt Front Rate Control Using a Capacitive Transducer in Injection Molding
- Structural and Rheological Properties as a Function of Mixing Energy for Polymer/Layered Silicate Nanocomposites
- Study on Kneading and Molding of PP/TiO2 Nanocomposite
- Sustainable Biocomposites from Rice Flour and Sisal Fiber: Effect of Fiber Loading, Length and Alkali Treatment
- On-line Measurement Studies on Orientation Development and Characteristic Short-Period Diameter Fluctuation in High Speed In-line Drawing of Poly(ethylene terephthalate) Fiber
- Micro Replication by Injection-Compression Molding
- Utilizing Processing Parameters for Evaluating Polymer Viscosity during Plastication in Injection Molding
- PPS-News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Investigation of the Thickening Efficiency of HEUR on the Behavior of Two Different Latex Types
- Optimization of the Thickness of PET Bottles during Stretch Blow Molding by Using a Mesh-free (Numerical) Method
- An Experimental Setup to Measure the Transient Temperature Profiles in Water Assisted Injection Molding
- Experimental Investigation and Flow Modeling of Slippage Induced by Additives in Polyolefins in a Modular Co-rotating Twin Screw Extruder
- In-mold Melt Front Rate Control Using a Capacitive Transducer in Injection Molding
- Structural and Rheological Properties as a Function of Mixing Energy for Polymer/Layered Silicate Nanocomposites
- Study on Kneading and Molding of PP/TiO2 Nanocomposite
- Sustainable Biocomposites from Rice Flour and Sisal Fiber: Effect of Fiber Loading, Length and Alkali Treatment
- On-line Measurement Studies on Orientation Development and Characteristic Short-Period Diameter Fluctuation in High Speed In-line Drawing of Poly(ethylene terephthalate) Fiber
- Micro Replication by Injection-Compression Molding
- Utilizing Processing Parameters for Evaluating Polymer Viscosity during Plastication in Injection Molding
- PPS-News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
