Injection Molding

Welcome to the Injection Molding section. The latest articles for this section are displayed below:

Novel microcellular foam injection-molding technology

Atsushi Yusa, Satoshi Yamamoto, Hideto Goto, Hiromasa Uezono, Long Wang, Shota Ishihara, and Masahiro Ohshima
12 September 2016
A simplified process for the production of microcellular foams demonstrates that pressurization of nitrogen or carbon dioxide to a supercritical state is unnecessary.

Microinjection molding of polymer/multi-walled carbon nanotube nanocomposites

Shengtai Zhou, Andrew Hrymak, and Musa Kamal
22 August 2016
The filler distribution within micromoldings may be significantly affected by molding conditions, mold geometry, and the selection of polymer matrices.

Using elongational flow to enhance the properties of polypropylene nanocomposites

Sundaresan Arunachalam, Markus Battisti, Leonhard Perko, Sebastian Stieger, and Walter Friesenbichler
4 August 2016
Different nozzle geometries were investigated to find the optimum injection molding strategy for the production of polymer nanoclay composites.

Predicting flow-induced stress during injection/compression molding

Wei Cao, Qian Zhang, Yanhui Qi, Guixiang Lu, and Changyu Shen
11 March 2016
A new approach, which combines the eXtended Pom-Pom finite element model and an arbitrary Lagrangian-Eulerian technique, is used to simulate stress levels at different points in a molded part.

Effects of surface modification on physical properties of bio-composites

Rajkumar Subbiah, Mohini Sain, Sanjay K. Nayak, and Jimi Tjong
11 January 2016
Treated sisal fiber-based materials exhibit permeability, resin flow direction, and tensile strength changes compared with untreated samples.

Angle analysis for the evaluation of in-plane anisotropic properties

Claudio Di Fratta
16 December 2015
A new approach, based on angle measurements in simple unidirectional tests, reduces the time, samples, and costs required for determination of material parameters such as textile permeability.

Foam injection molding with nitrogen and carbon dioxide as co-blowing agents

Xiaofei Sun, Hrishikesh Kharbas, and Lih-Sheng Turng
26 November 2015
A novel process combines gas-laden pellets and microcellular injection molding to produce thermoplastic polyurethane foams with low density, uniform cell structure, and high durability.

A novel foaming method for fabricating microcellular injection-molded parts

Lih-Sheng Turng and Jun Peng
6 November 2015
Water vapor represents a new kind of physical blowing agent for the fabrication of foamed-polycarbonate parts with a smooth surface finish.

The skin-core structure of injection-molded parts

Sudheer Bandla and Jay Hanan
3 November 2015
A highly oriented skin layer caused by flow-induced stresses from injection molding was visualized and quantified by x-ray nanotomography.

Core-material penetration in multi-cavity co-injection molding

Chao-Tsai Huang and Jackie Yang
14 October 2015
A high core-material ratio and slow injection speed allow for good penetration, but leading behavior during the runner-filling stage can result in unsatisfactory material distribution in the molded parts.