Modelling the Packing Cooling Stage in Injection Molding of Amorphous Polymers

1988 ◽  
Vol 3 (4) ◽  
pp. 184-190 ◽  
Author(s):  
D. Huilier ◽  
J. Terrisse ◽  
M.-E. de la Lande ◽  
A. Latrobe
Keyword(s):  
Injection Molding ◽  
Amorphous Polymers ◽  
Cooling Stage

Fast cavity surface temperature evolution in injection molding: control of cooling stage and final morphology analysis

RSC Advances ◽  
2016 ◽  
Vol 6 (101) ◽  
pp. 99274-99281 ◽  
Author(s):  
Sara Liparoti ◽  
Andrea Sorrentino ◽  
Giuseppe Titomanlio
Keyword(s):  
Injection Molding ◽  
Surface Temperature ◽  
Temperature Evolution ◽  
Cavity Surface ◽  
Cooling Stage ◽  
Morphology Analysis

New isotropic morphologies are obtained by controlling pressure and temperature evolution.

Replication, Characterization and Simulation of Micro Injection Molded Microlens Arrays Using Technical Amorphous Polymers

2013 ◽  
Vol 562-565 ◽  
pp. 458-464 ◽  
Author(s):  
Lei Chen ◽  
Stefan Kirchberg ◽  
Bing Yan Jiang ◽  
Lei Xie ◽  
Qing Jun Qiu ◽  
...  
Keyword(s):  
Injection Molding ◽  
Microlens Array ◽  
Amorphous Polymers ◽  
Experimental Methods ◽  
Microlens Arrays ◽  
Ultra Precision ◽  
Injection Molded ◽  
Micro Optics ◽  
Lens Radius

Novel results relating to the characterization of microlens array production by simulation and micro injection molding were examined to produce precise micro-optics from Polymethylmethacrylate (PMMA), Polycarbonate (PC) as well as Polystyrene (PS). The microlens arrays show 100 lenses in a 10×10 array with a lens radius of 271 µm and a lens depth of 45 µm. The pitches between the lenses are fixed at 800 µm. The surface of the ultra-precision diamond end-ball milled microlens array mold was polished to reduce the surface roughness of the injection molded specimen. The injection molding parameters were optimized to get precise lens geometries with high shrinkage uniformity by simulation and experimental methods. The injection molding results show precise injection molded microlens arrays and PC microlens array shows the best geometrical results compared to the microstructured insert.

Orientation development and relaxation in injection molding of amorphous polymers

1978 ◽  
Vol 18 (4) ◽  
pp. 273-281 ◽  
Author(s):  
Wolfgang Dietz ◽  
James L. White ◽  
Edward S. Clark
Keyword(s):  
Injection Molding ◽  
Amorphous Polymers

Cavity pressure control during the cooling stage in thermoplastic injection molding

1996 ◽  
Vol 36 (19) ◽  
pp. 2467-2476 ◽  
Author(s):  
F. Gao ◽  
W. I. Patterson ◽  
M. R. Kamal
Keyword(s):  
Injection Molding ◽  
Pressure Control ◽  
Cavity Pressure ◽  
Cooling Stage
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