In recent years, rapid domestic development of new plastic pipes are plastic composite pipe, cross-linked PE pipes, PPR pipes, PPC tubes, etc., are widely used in drinking water pipe system, building hot and cold water supply systems, air-conditioning systems, floor heating system and chemical, food, medicine and other fields. These new plastic pipe generally need to be used in the production of masterbatch.

However, due to the use of low-grade masterbatch ordinary paint, add some low-grade additives, the ordinary process, its performance is low, for the above-mentioned the production of new plastic pipe will produce color migration, severe bleaching can not be anti-aging, reduce tube life, pipe surface finish is poor, dull color. The main point of the use of low-grade paints, make pipe with a toxic, does not meet drinking water health standards, resulting in the construction sector is not installed and adoption.

An ordinary one masterbatch in the new plastic pipe production process will produce the above problem, especially in the health non-toxic pipe, pipe-specific masterbatch in the development of new pay particular attention to the choice of paint, choose paint requires not only colorful and lasting, but also to high temperature, also asked pigment production plant test report must be non-toxic paint. Pairs of resins and other additives also have insisted on the choice of the above criteria