Experimental Study on Filling Stage of Microcellular Injection Molding Process

2006 ◽  
Vol 25 (2) ◽  
pp. 85-98 ◽  
Author(s):  
A.H. Behravesh ◽  
M. Rajabpour
Keyword(s):  
Experimental Study ◽  
Injection Molding ◽  
Injection Molding Process ◽  
Molding Process ◽  
Filling Stage ◽  
Microcellular Injection Molding

An Experimental Evaluation of Vibration-Assisted Injection Molding During Manufacturing

1999 ◽  
Author(s):  
Alan M. Tom ◽  
Akihisa Kikuchi ◽  
John P. Coulter
Keyword(s):  
Experimental Study ◽  
Injection Molding ◽  
Scientific Explanation ◽  
Molecular Level ◽  
Injection Molding Process ◽  
Processing Conditions ◽  
Vibrational Motion ◽  
Current Investigation ◽  
Molding Process ◽  
Polymer Properties

Abstract The current investigation focused on contributing to the development of a novel injection molding process by attempting to understand the scientific relationship that exist between the applied vibrational parameters involved in this process and the effect it has on final product polymeric characterization. Although previous and current attempts at understanding the connection between applied oscillatory or vibrational motion to an injection molding process has shown positive quantitative advantages to final product properties, there still exists a void in the scientific explanation on a molecular level linking these effects. This experimental study, in particular, involved an evaluation on a range of processing conditions applied to Polystyrene and the effects it produced on resultant product quality and polymer properties. Optimal control and mechanical vibrational molding conditions were obtained for Polystyrene. As a result of this, optimal opportunities for initial commercial utilization of the technology can be proposed.

The Visualization Research on Cavitation Flaw of the Jubilance Toy's Part with Different Wall Thickness

2012 ◽  
Vol 479-481 ◽  
pp. 45-49
Author(s):  
Yong Li ◽  
Yu Xin Zhang ◽  
Zhi Qiang Sun ◽  
Rui Zhu Zhang
Keyword(s):  
Experimental Study ◽  
Injection Molding ◽  
Wall Thickness ◽  
Technological Parameter ◽  
Injection Molding Process ◽  
Kinetic Simulation ◽  
Molding Process

The injection molding process with different wall thickness may create the obvious cavitation flaw. So carried on the kinetic simulation of filling injection using plastic advisor with Pro/E software, and discussed the melt flows in the mould. Research the cavitation defect of the jubilance toy's part with different wall thickness, and forecast reasonably position and quantity of the cavitation, and through the change of formation technological parameter, obtained the relatively good formation technological combination, achieved the reduced flaw quantity. Which provided the theory basis to study and removes the product flaw, provided reference for the discussion injection CAE, indicated it had great singlenificance for the visualization experimental study.

An Investigation into the Influencing Factors for Polymer Melt at the Filling Stage in Micro Injection Molding

2013 ◽  
Vol 562-565 ◽  
pp. 1380-1386
Author(s):  
Jian Zhuang ◽  
Da Ming Wu ◽  
Ya Jun Zhang ◽  
Lin Wang ◽  
Xiong Wei Wang ◽  
...  
Keyword(s):  
Injection Molding ◽  
Influencing Factors ◽  
Polymer Melt ◽  
Theoretical Models ◽  
Injection Molding Process ◽  
Melt Flow ◽  
Molding Process ◽  
Micro Injection Molding ◽  
Filling Stage ◽  
Conventional Injection Molding

The flow behaviors for polymer melt at the filling stage in micro injection molding are different from those in conventional injection molding due to the miniaturization of plastic parts. This paper focuses on the study of the effects of three main influencing factors, including the microscale viscosity and wall slip, on melt filling flow in microscale neglected those in conventional injection molding process. The theoretical models and the interrelation of these factors in microscale channels were constructed by means of the model correction method. Then, the micro melt flow behaviors were investigated with comparisons of the available experimental data. The results indicate that the dimensions affect the shear rates and viscous dissipation, which in turn affects the apparent viscosity. Finally, the conclusion is that the melt flow behaviors in microchannels are different from those in macrochannels owing to these significant influencing factors.

Sign in / Sign up

Export Citation Format

Share Document