Precautions for pipe filling masterbatch: avoid moisture absorption before use, that is, use the ingredients immediately, the effect is better, shall not be heated and dried together with damp plastic, so as to avoid product quality defects, before opening the package, check whether the package is intact, hot seal the unfinished masterbatch as soon as possible, do not allow the masterbatch packaging damage and open storage, to avoid sun exposure and rain. Before purchasing in large quantities, we must make a small test to determine compatibility and other indicators to meet the production requirements.

Pipe filling masterbatch can be used for processing plastic film, garbage bag, shopping bag, vest bag, packaging bag, etc., good dispersion, no white and black dots blown film, high fineness, to ensure product gloss and toughness. It is mainly applicable to the filling modification of woven bags, packing belts, hollow products, pipes, sheets, injection products and plastic fast food boxes, which can improve the performance of plastic products and reduce the cost of products.

The concentration of fillers and auxiliaries in the pipe filling masterbatch is large, and a certain amount of matrix resin must be added when used and then processed after mixing, and the filler mainly plays a filling role. Fillers and auxiliaries can give plastic products special functions, such as: light, electricity, flame retardant, degradation, etc., called functional filler masterbatch. Functional masterbatch usually includes color masterbatch, light conversion masterbatch, high efficiency insulation film masterbatch, anti-fogging masterbatch and degradation masterbatch.

The additives used in pipe filling masterbatch are mainly dispersant and surface treatment agent. The function of the dispersant is to improve the processing flow of the masterbatch and facilitate the more uniform dispersion of the masterbatch in the matrix resin. Commonly used dispersants are: white oil (liquid paraffin), paraffin, dioctyl phthalate (BOP), low molecular weight polyethylene (polyethylene wax) and stearic acid. The main properties of commonly used dispersants can be selected according to the performance characteristics of fillers and carrier resins. Surface treatment agent can change the surface activity of inorganic filler, so that it is converted from hydrophilic to lipophilic, in order to facilitate the mixing of carrier resin, mainly coupling agent and stearic acid two types, in order to better product dispersion, more bright can add EBS, flow modifier and so on.

The pipe filling masterbatch is composed of three parts: carrier resin, filler and various auxiliaries, of which the filler accounts for the main component, up to 90%. Polyolefin filled masterbatch is mainly used in the production of polyolefin plastics such as polyethylene and polypropylene. Such as: polyethylene hollow blow molding products, polyethylene injection molding products and polyethylene film, polypropylene woven bags, woven fabrics and packaging belts. Generally, when selecting raw and auxiliary materials for olefin filled masterbatch, it is necessary to consider its good performance and low cost.

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