**Summary of Non-Woven Masterbatch Production Knowledge**
The production of non-woven masterbatch typically involves four main methods: the washing method, ink method, kneading method, and metal soap method. Each of these processes has its own unique steps and advantages. Below is a detailed explanation of each technique:
**A. Washing Method**
This process begins with the pigment, water, and dispersing agent being milled together to reduce the particle size of the pigment to less than 1 μm. The pigment is then transferred into the oil phase using a phase transfer method. An organic solvent is used during this process, along with a corresponding solvent recovery system to ensure environmental safety and cost efficiency.
The steps involved are:
- Preparation of fine color paste
- Washing and rinsing
- Evaporation and concentration
- Drying
- Mixing with the carrier resin
- Extrusion granulation
**B. Ink Method**
As the name suggests, this method uses an ink-based color paste in the production of masterbatch. A three-roll mill is used to coat the pigment surface with a low molecular weight protective layer. The resulting fine color paste is then mixed with a carrier resin and plasticized using a two-roll mill. Finally, the mixture is extruded through a single-screw or twin-screw extruder to produce granules.
The process includes:
- Batch mixing
- Coarse color paste preparation
- Three-roll grinding
- Fine color paste formation
- Two-roll plastication
- Extrusion granulation
**C. Metal Soap Method**
In this method, the pigment is ground to a particle size of approximately 1 μm. At a specific temperature, a soap solution is added to evenly wet the surface of each pigment particle, forming a saponified layer. This layer then reacts chemically with a metal salt (such as magnesium stearate) to create a protective coating on the pigment. This prevents flocculation and maintains the desired fineness of the pigment particles.
**D. Kneading Method**
After blending the pigment with an oil-based carrier, the mixture is kneaded to transfer the pigment from the aqueous phase to the oil phase. During this process, 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 consistency of the 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
This content provides a comprehensive overview of the key techniques used in the production of non-woven masterbatches, offering valuable insights for manufacturers and industry professionals.
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