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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.
the Johnson–Cook model; the Steinberg–Cochran–Guinan–Lund model. the Zerilli–Armstrong model. the Mechanical threshold stress model. the Preston–Tonks–Wallace model. The Johnson–Cook (JC) model [24] is purely empirical and is the most widely used of the five. However, this model exhibits an unrealistically small strain-rate ...
Supporting the two divisions is the Group's Component & Services (C&S) function which produces plastic and metal parts, tooling and production equipment for motor and motion-related products. Johnson Electric has its head office in Shatin, Hong Kong, and is listed on the Hong Kong stock exchange. Johnson Electric has over 30,000 employees and ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 31 December 2024. Manufacturing processes This section does not cite any sources.
Plastics extrusion is a high-volume manufacturing process in which raw plastic is melted and formed into a continuous profile. Extrusion produces items such as pipe/tubing, weatherstripping , fencing, deck railings , window frames , plastic films and sheeting, thermoplastic coatings, and wire insulation.
Thermoplastic olefin, thermoplastic polyolefin (TPO), or olefinic thermoplastic elastomers refer to polymer/filler blends usually consisting of some fraction of a thermoplastic, an elastomer or rubber, and usually a filler.
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The plastics industry manufactures polymer materials—commonly called plastics—and offers services in plastics important to a range of industries, including packaging, building and construction, electronics, aerospace, manufacturing and transportation. It is part of the chemical industry.
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