**Summary of Non-Woven Masterbatch Production Knowledge**
The production of non-woven masterbatches typically involves four main methods: the washing method, ink method, kneading method, and metal soap method. Each technique has its own unique process and advantages. Below is a detailed explanation of each:
**A. Washing Method:**
This method begins with the dispersion of pigments in water along with a dispersing agent. The pigment particles are then milled to reduce their size to less than 1 μm. A phase transfer technique is used to move the pigment into the oil phase, followed by drying to produce the masterbatch. This process requires the use of an organic solvent and a corresponding solvent recovery system for efficient phase inversion.
**Process Flow:**
Fine color paste → Rinse → Evaporation → Concentration → Drying → Added to Carrier → Extrusion Granulation
**B. Ink Method:**
As the name suggests, this method uses ink-based color paste during the masterbatch production. A three-roll mill is used to coat the pigment surface with a low molecular weight protective layer. The finely ground color paste is then mixed with a carrier resin, plasticized using a two-roll mill, and finally granulated via a single-screw or twin-screw extruder.
**Process Flow:**
Batch mixing → Coarse color paste → Three-roll grinding → Fine color paste → Two-roll plastication → Extrusion granulation
**C. Metal Soap Method:**
After grinding, the pigment particles are approximately 1 μm in size. At a specific temperature, a soap solution is added to uniformly wet the surface of each pigment particle, forming a saponified layer. This layer reacts chemically with a metal salt (such as magnesium stearate) to create a protective coating that prevents pigment agglomeration and maintains the desired fineness.
**D. Kneading Method:**
In this approach, the pigment is blended with an oil-based carrier. Through kneading, the pigment is washed from the aqueous phase into the oil phase. Simultaneously, the oil carrier coats the pigment surface, stabilizing its dispersion and preventing it from clumping together.
By strictly following these four production methods, the quality and performance of the resulting non-woven masterbatch can be effectively ensured.
**Author:** Kim Jin Plastic Co., Ltd., Dongguan City
**Main Products:** Black Masterbatch, Color Masterbatch
**Official Website:** [http://news.chinawj.com.cn](http://news.chinawj.com.cn)
**Editor:** Hardware Business Network Information Center
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