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Compression molding, transfer molding, injection molding, forging, and foam molding have high equipment and tooling cost. [1] Lower cost processes are machining, extruding, rotational molding, blow molding, thermoforming, and casting. [1] A summary of each process and its cost is displayed in figure 1.
Paper clip mold opened in molding machine; the nozzle is visible at right A injection molding machine with a robot. An injection molding machine (also spelled as injection moulding machine in BrE), also known as an injection press, is a machine for manufacturing plastic products by the injection molding process. It consists of two main parts ...
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 ...
Benchtop injectors have become more common as inexpensive CNC milling machines have reduced the cost of producing molds in a home workshop. In hobby injectors injection pressure is generated manually by the operator, with a lever [ 1 ] [ 2 ] [ 3 ] or gear [ 4 ] [ 5 ] translating the operator's effort to the required pressure.
Plastic forming machines, or plastic molding machines, were developed on the basis of rubber machinery and metal die-casting machines. After the inception of the polymer injection molding process in the 1870s, plastic-forming machines were rapidly developed up until the 1930s.
Thin wall injection molding is a specialized form of conventional injection molding that focuses on mass-producing plastic parts that are thin and light so that material cost savings can be made and cycle times can be as short as possible. Shorter cycle times means higher productivity and lower costs per part. [1]
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