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Ingredients and molding process of plastic parts
Sep 04, 2018

In the process of processing plastic parts, the main raw materials should be determined first. Usually, in addition to the polymer, various plastic additives such as stabilizers, plasticizers, colorants, lubricants, reinforcing agents and fillers are required. This can also improve the molding process conditions of the plastic parts and the performance of the products or reduce the cost of the products.

 

Usually, after the raw materials of these plastic parts are uniformly mixed, they are called dry mixes. Some powders also need to be processed into pellets by plastication. These powders and pellets are collectively referred to as batching materials or molding compounds. After the ingredients are determined, molding is the key to plastic processing. By molding is a product or blank in which various forms of plastic (powder, pellets, solution or dispersion) are formed into a desired shape.

 

There are many molding processes for plastic parts, and it is usually selected according to the type of plastic and the shape and size of the product. Commonly used methods for processing thermoplastics include extrusion, injection molding, calendering, blow molding, and thermoforming. The thermosetting plastics are generally molded, transferred, and injection molded. Lamination, molding, and thermoforming are the shaping of plastic on a flat surface.

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