The masterbatch is composed of a carrier resin, a filler and various auxiliaries. The limit of the auxiliary in the masterbatch or the content of the filler is several times to ten times higher than the amount required in the actual plastic product. In the molding process, the ratio of the masterbatch to the matrix resin must be adjusted according to the content of the relevant components in the masterbatch and the amount to be added in the actual product. The masterbatch can be generally divided into a common filler masterbatch (referred to as a filler masterbatch) and a functional masterbatch, such as a color masterbatch, an anti-fog drip masterbatch, and the like. The main component of the filler masterbatch is a filler, which is mainly used for the processing of polyolefins (polyethylene and polypropylene), also known as polyolefin filler masterbatch.
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