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Draft angle design is an important factor when designing plastic parts. Because of shrinkage of plastic material, injection molded parts have a tendency to shrink onto a core. This creates higher contact pressure on the core surface and increases friction between the core and the part, thus making ejection of the part from the mold difficult.
Injection moulding (U.S. spelling: injection molding) is a manufacturing process for producing parts by injecting molten material into a mould, or mold. Injection moulding can be performed with a host of materials mainly including metals (for which the process is called die-casting ), glasses , elastomers , confections , and most commonly ...
The International Journal of Machine Tools and Manufacture is a peer-reviewed scientific journal dedicated to report the latest advancements in the fundamental understanding of mechanics of processes and machines applied to the manufacture of engineering parts made of metals, composites, ceramics and other structural/functional materials. [1] [2]
The impact factor relates to a specific time period; it is possible to calculate it for any desired period. For example, the JCR also includes a five-year impact factor, which is calculated by dividing the number of citations to the journal in a given year by the number of articles published in that journal in the previous five years. [14] [15]
The Journal of Cellular Plastics is a bimonthly peer-reviewed scientific journal that covers the field of polymer science and foamed plastics technology. The journal was established in 1965 and is published by SAGE Publications. it was established in 1965 and the editors-in-chief are Chul B. Park (University of Toronto).
Oxo-degradable plastics: [2] these are petroleum-based plastics with additives such as transition metals and metals salts that promote the process of fragmentation of the plastic when exposed to a particular environment, such as high temperature or oxygen rich one, for a prolonged period of time. Fragmentation exposes a larger surface area of ...
The two most important manufacturing methods with TPEs are extrusion and injection molding. TPEs can now be 3D printed and have been shown to be economically advantageous to make products using distributed manufacturing. [5] [6] Compression molding is seldom, if ever, used. Fabrication via injection molding is extremely rapid and highly economical.
In 2022 SPE launched its "Plastics and Beyond" podcast, which focuses on issues of diversity, equity and inclusion in the manufacturing industry. [1] Through lively demonstrations and hands-on activities, the Foundation's PlastiVan® Program is designed to excite students about opportunities in science and engineering within the plastics industry.