What is the production and processing process of high concentration colorants? Lina mechanical engineers will provide examples of three production and processing processes, with detailed content as follows:

  一、 Ink method

  The ink method is a production method that uses ink color paste in the production of color masterbatch, which involves three rollers grinding and coating a low molecular weight protective layer on the surface of the pigment. After grinding, the fine color slurry is mixed with the carrier resin, and then plasticized by a two roll open mill (also known as a double roll open mill), and finally granulated by a single screw or twin-screw extruder.

  二、Rinse method

  The pigment particles are made smaller than 1 μ m by sanding with pigment, water, and dispersant, and then transferred to the oil phase by phase transfer method, followed by drying to obtain color masterbatch. Organic solvents and corresponding solvent recovery devices are required for phase transition

  三、Pinch legally

  It is a process of mixing pigments with oil-based carriers, utilizing the lipophilicity of pigments, and washing them from the water phase into the oil phase through kneading. At the same time, the surface of the pigment is coated with an oily carrier to ensure stable dispersion and prevent pigment aggregation.

  Precautions for using color masterbatch:

1. Color masterbatch will absorb moisture after being stored for a period of time, especially for PET, ABS, PA, PC, etc., so it should be dried using the same process as the natural color masterbatch to meet the moisture content requirements.

2. The use of color masterbatch to achieve the desired color requires great caution, as color differences and variations in color often occur

3. Masterbatches and other additives may react, so be careful when using them.

4. The selection of dilution ratio for high concentration black masterbatch should be noted. Choosing a high dilution ratio results in lower production costs, but it is also limited by processing equipment.