Polymer-Based Antifoam (Paper Machine Grade)
Polymer-based antifoams for paper machine systems are non-silicone defoamers formulated with mineral oils, fatty acid esters, or polyol-based active components. They control foam in white water systems, stock preparation, and headboxes without the wire contamination and staining risks associated with silicone antifoams. These water-dispersible formulations provide rapid foam knockdown and extended foam prevention in the paper machine wet end.
Technical Specifications
| pH | 6.0–8.0 |
| appearance | White to off-white milky emulsion |
| active content (%) | 30±3 |
| viscosity (mPa·s, 25°C) | 100–500 |
Applications
- White water foam control on paper and board machines
- Headbox and approach system foam suppression
- Coating kitchen and coating machine foam control
- Stock preparation and chest foam prevention
- Press section and saveall pit foam control
Key Features
- Non-silicone formula avoids wire contamination and coating defects
- Fast-acting foam knockdown with persistent prevention
- Compatible with sizing agents, retention aids, and coating chemicals
- Effective over wide pH and temperature range in paper systems
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