Jiangyin jinmansheng Plastic Technology Co., Ltd
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  • Production process of masterbatch

    The production process of masterbatch is very strict, and the wet process is generally used. The color masterbatch is made by water-phase grinding, phase inversion, water washing, drying and granulation. Only in this way can the product quality be guaranteed.

    In addition, when the pigment is being ground, a series of tests should be carried out, such as measuring the fineness of the sand slurry, measuring the diffusion performance of the sand slurry, measuring the solid content of the sand slurry, and measuring the fineness of the color slurry. Click on the lower left corner to read the original text and purchase EC5011A breathable rubber particles with one click!

    There are four methods for the production process of masterbatch:
    1 ink method
    As the name suggests, it is the production method of ink color paste in the production of masterbatch, that is, through three-roll grinding, the surface of the pigment is coated with a low-molecular protective layer. The ground fine color paste is mixed with the carrier resin, and then plasticized by a two-roll plastic mill (also called a two-roll mill), and finally pelletized by a single-screw or twin-screw extruder.

    2 flushing method
    The pigment, water and dispersant are sand-milled to make the pigment particles smaller than 1μm, and the pigment is transferred into the oil phase by the phase transfer method, and then dried to obtain the masterbatch. Organic solvents and corresponding solvent recovery devices are required for phase inversion.

    3 pinch legal
    After blending the pigment and the oily carrier, the pigment is washed out from the water phase into the oil phase through kneading by using the characteristic of the pigment that is lipophilic. At the same time, the oily carrier coats the surface of the pigment to stabilize the dispersion of the pigment and prevent the pigment from agglomerating.

    4 Metal soap method
    After the pigment is ground, the particle size reaches about 1μm, and soap liquid is added at a certain temperature, so that the surface layer of each pigment particle is evenly wetted by the soap liquid to form a layer of saponification liquid. When the metal salt solution is added, the The saponification layer on the surface chemically reacts to form a protective layer of metal soap (magnesium stearate), so that the finely ground pigment particles will not cause flocculation, and a certain degree of fineness is protected.