Application Of Moldex3D For Thin-wall Injection Moulding Simulation

2007 ◽  
Author(s):  
Mladen Šercer ◽  
Damir Godec ◽  
Božo Bujanić
Keyword(s):  
Injection Moulding ◽  
Thin Wall ◽  
Wall Injection

scholarly journals Correlation of Processing, Inner Structure, and Part Properties of Injection Moulded Thin-Wall Parts on Example of Polyamide 66

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Dietmar Drummer ◽  
Steve Meister
Keyword(s):  
Cooling Rate ◽  
Injection Moulding ◽  
Degree Of Crystallinity ◽  
Process Conditions ◽  
Thin Wall ◽  
Polyamide 66 ◽  
Slow Cooling ◽  
Cooling Conditions ◽  
Internal Structures ◽  
Wall Injection

In micro- and thin-wall injection moulding the process conditions affect the developed internal structures and thus the resulting part properties. This paper investigates exemplarily on polyamide 66 the interactions of different cooling conditions on the morphological and crystalline structures. The investigations reveal that a slow cooling rate of the melt results in a homogeneous morphology and a higher degree of crystallinity and also a favoured crystalline structure. Consequently, the dielectric behaviour and light transmitting part properties are affected.

Effects of different mould coatings on polymer filling flow in thin-wall injection moulding

CIRP Annals ◽  
2016 ◽  
Vol 65 (1) ◽  
pp. 537-540 ◽  
Author(s):  
G. Lucchetta ◽  
D. Masato ◽  
M. Sorgato ◽  
L. Crema ◽  
E. Savio
Keyword(s):  
Injection Moulding ◽  
Thin Wall ◽  
Wall Injection

Investigation of mold plate separation in thin-wall injection molding

2003 ◽  
Vol 22 (4) ◽  
pp. 306-319 ◽  
Author(s):  
Shia-Chung Chen ◽  
Wei-Liang Liaw ◽  
Pao-Lin Su ◽  
Ming-Hsiu Chung
Keyword(s):  
Injection Molding ◽  
Thin Wall ◽  
Mold Plate ◽  
Plate Separation ◽  
Wall Injection

Anisotropic multilayer conductive networks in carbon nanotubes filled polyethylene/polypropylene blends obtained through high speed thin wall injection molding

Polymer ◽  
2013 ◽  
Vol 54 (23) ◽  
pp. 6425-6436 ◽  
Author(s):  
Feilong Yu ◽  
Hua Deng ◽  
Qin Zhang ◽  
Ke Wang ◽  
Chaoliang Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Injection Molding ◽  
High Speed ◽  
Thin Wall ◽  
Wall Injection ◽  
Polypropylene Blends

Effects of process conditions on the heat transfer coefficient at the polymer-mold interface and tensile strength of thin-wall injection molding parts

2019 ◽  
Vol 39 (5) ◽  
pp. 493-500
Author(s):  
Laiyu Zhu ◽  
Liping Min ◽  
Xianglin Li ◽  
Zhanyu Zhai ◽  
Dietmar Drummer ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Surface Roughness ◽  
Tensile Strength ◽  
Weld Line ◽  
Polymer Melt ◽  
Mold Cavity ◽  
Cavity Surface ◽  
Thin Wall ◽  
Wall Injection ◽  
The Heat Transfer Coefficient

Abstract Generally, the strength at the weld line of the injection molded part is very weak. The heat transfer coefficient (HTC) between the polymer melt and the mold cavity surface was analyzed to solve this problem. The surface roughness of the mold cavity and the material of the mold insert were changed to adjust the interface environment between the polymer melt and the mold cavity surface. HTC was obtained by combing the experimental measurement with the theoretical calculation. In the current study, the influence of HTC on the tensile strength of the weld line of the molded specimen was investigated. The results show that the weld line strength of the molded specimen increases with the decrease in HTC between the polymer and the mold cavity surface. Meanwhile, the decrease in the surface roughness of the mold cavity or replacing the mold material with lower thermal conductivity can reduce the value of the HTC between the polymer and the mold effectively and can delay the cooling rate of the hot polymer melt. This provides a new idea to solve thin-wall injection molding weld line defects.

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