Numerical analysis of flow mark surface defects in injection molding flow

2002 ◽  
Vol 46 (3) ◽  
pp. 651-669 ◽  
Author(s):  
Anne M. Grillet ◽  
Arjen C. B. Bogaerds ◽  
Gerrit W. M. Peters ◽  
Frank P. T. Baaijens ◽  
Markus Bulters
Keyword(s):  
Numerical Analysis ◽  
Injection Molding ◽  
Surface Defects ◽  
Molding Flow

scholarly journals Numerical Analysis for Polymer Melt Flow in Injection Molding.

1994 ◽  
Vol 37 (3) ◽  
pp. 531-537 ◽  
Author(s):  
Katsuhiko Sagae ◽  
Makoto Koizumi ◽  
Masanori Yamakawa
Keyword(s):  
Numerical Analysis ◽  
Injection Molding ◽  
Polymer Melt ◽  
Melt Flow

Numerical Analysis of Microcellular Injection Molding

2003 ◽  
Vol 39 (6) ◽  
pp. 475-485 ◽  
Author(s):  
S. Han ◽  
P. Kennedy ◽  
R. Zheng ◽  
J. Xu ◽  
L. Kishbaugh
Keyword(s):  
Numerical Analysis ◽  
Injection Molding ◽  
Microcellular Injection Molding

Application of Taguchi Method to the Optimal Parameters of Injection Molding for the Plastic Components of the Braille Display Cell

2014 ◽  
Vol 1052 ◽  
pp. 495-502
Author(s):  
Fung Huei Yeh ◽  
Ching Lun Li ◽  
Bing Ming Chen
Keyword(s):  
Injection Molding ◽  
Taguchi Method ◽  
Surface Defects ◽  
Optimal Parameters ◽  
Melt Temperature ◽  
Filling Time ◽  
Short Shot ◽  
Plastic Components ◽  
Mold Flow ◽  
Braille Display

The paper studies the optimal parameters of injection molding to avoid the deformation, warping, short shot, and surface defects for the plastic components of Braille display cell. At first the Pro/Engineer parametric software is applied for the entity design and rendering. Then the Mold-Flow software is used for mold flow analysis on the influence of each injection parameters. The results show mold temperature, melt temperature, injection pressure, and filling time are the most influential factors on reducing component deformation. Besides, the L9 orthogonal array of Taguchi method is applied to find out the optimal parameters of injection molding. The deformation, short shot and surface defects of the plastic components in Braille display cell are reduced.

scholarly journals Evaluation by nanoindentation of technological products manufactured by pulse injection molding process

2018 ◽  
Vol 145 ◽  
pp. 02006
Author(s):  
Margarita Natova ◽  
Ivan Ivanov ◽  
Sabina Cherneva ◽  
Maria Datcheva ◽  
Roumen Iankov
Keyword(s):  
Injection Molding ◽  
Polymer Melt ◽  
Injection Molding Process ◽  
Melt Flow ◽  
Molding Process ◽  
Polymer Injection ◽  
Pulse Injection ◽  
Molding Flow ◽  
Different Parts ◽  
Technological Products

During conventional polymer injection molding, flow- and weld lines can arise at the molded parts caused by disturbed polymer melt flow when it crosses different parts of the equipment. Such processed plastic goods have discrete zones of inhomogeneities of very small dimensions. In order to stabilize the melt flow and to equalize dimensions of such defective products, an approach for pulse injection molding is applied during production of polymer packagings. Testing methods used for evaluation of macromechanical performance of processed polymer products are not readily applicable to estimate the changes in visual surface obtained during pulse injecting. To overcome this testing inconvenience the performance of processed packagings is evaluated by nanoindentation. Using this method, a quantitative assessment of the polymer properties is obtained from different parts of technological products.

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