injection molding is the most widely used process for producing plastic parts.in this process, an important issue is to predict and optimize the warpage before manufacturing. in this paper, a simulation with moldflow software is proposed to optimize the injection molding process. the optimization process aims at minimizing the warpage of the critical injection molding part in which process para...

injection molding is one of the most common processes which are used for manufacturing different plastic parts. this method includes 3 continuous steps: filling of the mold, cooling and driving the part out. a wide range of plastic and non-plastic materials can be used as raw material in this process. one of the most important advantages of this way of production is that it is very economic. in...

In the process of double-layer gas-assisted extrusion plastic micro-tubes, external size and surface quality micro-tubes are greatly affected by assisting gas inlet slit inside mold. Therefore, in this experiment, a two-phase flow model was established based on compressible non-compressible melt. The Polyflow finite element solution software module used to solve velocity field, temperature pres...

Plastic waste generates numerous environmental problems, such as garbage accumulation and plastic pollution in the oceans. This study aims to evaluate effectiveness of melted a substitute material paving blocks. The low-density polyethylene (LDPE) is used cemented agent block. After melting, LDPE mixed thoroughly with sand immediately forms block mold. bonding evaluated based on parameters comp...

To simplify complicated traditional cost estimation flow, this study emphasizes the cost estimation approach for plastic injection products and molds. It is expected designers and R&D specialists can consider the competitiveness of product cost in the early stage of product design to reduce product development time and cost resulting from repetitive modification. Therefore, the proposed cost es...

Injection molding is one of the most common processes which are used for manufacturing different plastic parts. This method includes 3 continuous steps: filling of the mold, cooling and driving the part out. A wide range of plastic and Non-Plastic materials can be used as raw material in this process. One of the most important advantages of this way of production is that it is very economic. In...

Molecular dynamics simulations using tight-binding many body potential are carried out to study the roller imprint process of a gold single crystal. The effect of the roller tooth's taper angle, imprint depth, imprint temperature, and imprint direction on the imprint force, adhesion, stress distribution, and strain are investigated. A two-stage roller imprint process was obtained from an imprin...

for 2006 IEEE 1 An Environmental Analysis of Injection Molding Extended Abstract – Green Manufacturing Processes Alexandre Thiriez and Timothy Gutowski Department of Mechanical Engineering Massachusetts Institute of Technology Rm. 35-234 77 Massachusetts Ave. Cambridge, MA 02139 Plastic components are integral parts in electrical and electronic (E&E) products. 8.5% of the plastic production is ...

Product quality for plastic injection molding process is highly related with the settings for its process parameters. Additionally, the product quality is not simply based on a single quality index, but multiple interrelated quality indices. To find the settings for the process parameters such that the multiple quality indices can be simultaneously optimized is becoming a research issue and ...

Executive Director, Committee on Prosthetics Research and Development, National Academy of Sciences—National Research Council. At the present time, most sockets for artificial limbs are made of a plastic laminate (usually polyester resin and Dacron) which has been molded over a modified replica of the stump. A replica of the stump is required because human tissues cannot withstand the temperatu...