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What are the unique manufacturing processes for non-woven masterbatch? First we start with the components of the nonwoven masterbatch.
The non-woven masterbatch is mainly composed of three parts, which are a coloring agent, a carrier and a dispersing agent, respectively. The manufacturing process of non-woven masterbatch is mainly divided into four types. The following is a detailed introduction of various methods.
1. Washing method: the pigment, water and dispersing agent are sanded to make the pigment particles smaller than 1 μm, and the pigment is transferred to the oil phase by a phase transfer method, and then dried to obtain a masterbatch. An organic solvent, as well as a corresponding solvent recovery unit, is required for phase inversion.
The process: fine color slurry washing, evaporation concentrated material drying and adding carrier extrusion granulation.
2. Ink method: As the name implies, it is a production method using ink paste in the production of masterbatch, that is, a three-roll mill is used to coat a surface of the pigment with a low molecular protective layer. The ground fine color paste is then mixed with a carrier resin, then plasticized by a two-roll mill (also called a two-roll mill), and finally granulated by a single-screw or twin-screw extruder.
The process is as follows: the ingredients are stirred and the coarse color paste is tri-rolled, and the fine color paste is subjected to two-roll plasticating extrusion granulation.
3. Metal soap method: after the pigment is ground, the particle size reaches about 1μm, and the soap liquid is added at a certain temperature, so that the surface layer of each pigment particle is uniformly wetted by the soap liquid to form a saponification liquid, as a metal salt. After the solution is added, it chemically reacts with the saponified layer on the surface of the pigment to form a protective layer of magnesium soap (magnesium stearate), so that the finely divided pigment particles do not cause flocculation, but protect a certain fineness. .
4. Pinching method: After blending the pigment and the oily carrier, the pigment is lyophilized to wash the pigment from the aqueous phase into the oil phase by kneading. At the same time, the surface of the pigment is coated by an oil carrier to stabilize the dispersion of the pigment and prevent the pigment from agglomerating.
Through the above introduction, have you got a taste of the manufacturing process of non-woven masterbatch?