The Influence of Melt and Process Parameters on the Quality and Occurrence of Part Defects in Water-assisted Injection Molded Tubes
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S. Sannen
, J. De Keyzer und P. Van Puyvelde
Abstract
This study investigates the influence of melt and process parameters on the quality of water-assisted injection molded tubes. The influence was determined by the aid of a design of experiments (DOE) for both a HDPE and a PP resin. This design was carried out on two different cavities, in which the residual wall thickness (RWT) and the part weight were set as response functions. This was combined with a visual inspection of the part surface to detect correlations in the occurrence of part defects such as fingering and double wall. It was found that the water injection delay time and the water volume flow rate have the largest influence on the RWT and part weight. Moreover, the shear viscosity of the applied material determines the width and shape of the water bubble and consequently the RWT and part weight. In addition, process parameters such as melt temperature, water hold time and water volume flow rate as well as melt parameters such as shear viscosity have an influence on the formation of part defects.
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© 2011, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
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- Applicability of the Impact Response Analysis Method for Reinforced Concrete Beams Mixed with Polyvinyl Alcohol Short Fibers
- Epoxy-Montmorillonite Nanocomposites Applied to Powder Coatings
- Direct Imprinting Using Magnetic Nickel Mold and Electromagnetism Assisted Pressure for Replication of Microstructures
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- Flow Visualisation in Co-rotating Twin Screw Extruders: Positron Emission Particle Tracking and Numerical Particle Trajectories
- The Influence of Melt and Process Parameters on the Quality and Occurrence of Part Defects in Water-assisted Injection Molded Tubes
- Model and Numerical Simulation for the Second Penetration in Water-assisted Injection Molding
- Influence of Extrusion Conditions on the Rheological Behavior of Nuclear Bituminized Waste Products
- Influence of Dicumyl Peroxide Content on Thermal and Mechanical Properties of Polylactide
- Rapid Communications
- Calculation of Average Residence Time in a Ko-kneader
- PPS-News
- PPS News
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Applicability of the Impact Response Analysis Method for Reinforced Concrete Beams Mixed with Polyvinyl Alcohol Short Fibers
- Epoxy-Montmorillonite Nanocomposites Applied to Powder Coatings
- Direct Imprinting Using Magnetic Nickel Mold and Electromagnetism Assisted Pressure for Replication of Microstructures
- Automated Mold Heating System Using High Frequency Induction with Feedback Temperature Control
- The Prediction of Bowing Distortion of Film after Transverse Stretching with Consideration of Heated Air Flow in a Tenter
- The Influence of Injection Molding and Injection Compression Molding on Ultra-high Molecular Weight Polyethylene Polymer Microfabrication
- A Design-of-Experiment Study on the Microcellular Extrusion of Sub-critical CO2 Saturated PLA Pellets
- Optimization of Injection Molding Process for SGF and PTFE Reinforced PC Composites Using Response Surface Methodology and Simulated Annealing Approach
- Flow Visualisation in Co-rotating Twin Screw Extruders: Positron Emission Particle Tracking and Numerical Particle Trajectories
- The Influence of Melt and Process Parameters on the Quality and Occurrence of Part Defects in Water-assisted Injection Molded Tubes
- Model and Numerical Simulation for the Second Penetration in Water-assisted Injection Molding
- Influence of Extrusion Conditions on the Rheological Behavior of Nuclear Bituminized Waste Products
- Influence of Dicumyl Peroxide Content on Thermal and Mechanical Properties of Polylactide
- Rapid Communications
- Calculation of Average Residence Time in a Ko-kneader
- PPS-News
- PPS News