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Surface Defect Formation in the Injection Molding of Acrylonitrile-Styrene-Acrylate Polymers
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M. C. O. Chang
Published/Copyright:
May 28, 2013
Abstract
Surface defects in the injection molding of acrylonitrile-styrene-acrylate (ASA) weatherable polymers, such as “chevrons”, “non-uniform haze” and “step defect “, are examined. A criterion is proposed based on a flow instability mechanism which suggests that recoverable shear strain, shear stress, and coefficient of friction are the key factors controlling the formation of surface defects. The criterion is supported by various experiments.
Received: 1995-2-14
Accepted: 1995-9-8
Published Online: 2013-05-28
Published in Print: 1996-03-01
© 1996, Carl Hanser Verlag, Munich
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- Seventeenth in a Series: Reifenhäuser – From Blacksmiths to Master Integrated Screw Extrusion System Manufacturers
- Invited Paper
- 35 Years of Studies of Mixing of Rubber and Viscoelasticity
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- Melt Strength and Elastic Behaviour of LLDPE/LDPE Blends
- Screw Extrusion
- Melting and Blending in a Modular Co-Rotating/Counter-Rotating Twin Screw Extruder
- A Physico-Mathematical Model for Solids Conveying in Co-Rotating Twin Screw Extruders
- Fibers and Films
- High-speed Melt Spinning of PET
- Die Extrusion
- Evaluation of the FAN Technique for Profile Die Design
- Molding
- Analysis of the Mold Filling Process with Phase Change Considering the Non-steady Effect
- Analysis of the Local Volume Flow Rate of Polymers During Injection Molding
- Surface Defect Formation in the Injection Molding of Acrylonitrile-Styrene-Acrylate Polymers
- Injection Molding of Microcomposites Based on Polypropylene and Thermotropic Liquid Crystalline Polymers
Articles in the same Issue
- Contents
- Contents
- Editorial
- Seventeenth in a Series: Reifenhäuser – From Blacksmiths to Master Integrated Screw Extrusion System Manufacturers
- Invited Paper
- 35 Years of Studies of Mixing of Rubber and Viscoelasticity
- Mixing
- Melt Strength and Elastic Behaviour of LLDPE/LDPE Blends
- Screw Extrusion
- Melting and Blending in a Modular Co-Rotating/Counter-Rotating Twin Screw Extruder
- A Physico-Mathematical Model for Solids Conveying in Co-Rotating Twin Screw Extruders
- Fibers and Films
- High-speed Melt Spinning of PET
- Die Extrusion
- Evaluation of the FAN Technique for Profile Die Design
- Molding
- Analysis of the Mold Filling Process with Phase Change Considering the Non-steady Effect
- Analysis of the Local Volume Flow Rate of Polymers During Injection Molding
- Surface Defect Formation in the Injection Molding of Acrylonitrile-Styrene-Acrylate Polymers
- Injection Molding of Microcomposites Based on Polypropylene and Thermotropic Liquid Crystalline Polymers
