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JCT 
Nov 27,2025 
In the ink manufacturing industry, many systems are characteristized by high viscosity, high solid content, and demanding requirements for pigment dispersion. Conventional mixing equipment struggles to achieve uniform mixing and thorough grinding.
Sigma mixer, due to its powerful shearing, compression, and kneading characteristics, has become an indispensable key equipment for the production of high-viscosity inks.
Why is sigma mixer suitable for ink production?
1. Strong capability in handling high-viscosity materials
- Can handle high-viscosity materials ranging from 10,000 to 1,000,000cps.
- Suitable for paste-like mixing systems of pigments, resins and additives in inks.
2. ∑-shaped blades provide strong shearing and mixing effects
- The classic sigma double-blade structure provides high shear force.
- Effectively breaks down pigment agglomerates and promotes uniform dispersion.
- Improves ink gloss, fineness, and color concentration.
3. Sealed structure, suitable for solvent-based inks
- Optional vacuum kneader for degassing and solvent recovery.
- Reduces VOC emissions and improves safety.
4. Heated/cooled jacketed structure
- Resins in ink formulas require heating for dissolution.
- Sigma mixer can use steam, electric heating, or thermal oil.
- Ensures stable mixing temperature and improves product consistency.
Examples of materials used in ink production with Sigma Mixer
| Types of Ink | Processable Materials |
| Solvent-based ink | High-viscosity systems such as resins, color pastes, thickeners and additives |
| Offset printing ink | Main mixing stage for high-viscosity, paste-like materials |
| Acrylic ink | High-viscosity mixing of water-based resins and pigments/fillers |
| Gravure ink | Using sigma mixer during the initial high-viscosity stage, followed by transfer to high speed disperser |
| UV ink | Concentrated dispersion of UV-curable resins, pigments and fillers |
Ink Production Process (paste ink as example)
- Raw material feeding (resin, pigments, additives)
- Heating and dissolving the resin (jacket heating)
- Kneading and mixing (∑-blade high-shear mixing)
- Vacuum deaeration
- Discharge
- Further refining in grinding equipment
Sigma mixer is typically used in the initial high-intensity mixing stage of ink production.
Why do ink manufacturers choose JCT's sigma mixer?
- Powerful and stable mixing performance
- Heavy-duty and wear-resistant structure
- Multiple discharge methods suitable for ink production
- Supports ATEX/explosion-proof design
- Strong capability for non-standard customization
If you are interested in sigma mixer or ink production line turnkey project, feel free to contact us for more informations: +86-18138373963 (Whatsapp, Wechat) or george820606@gmail.com.
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