Sizing Anti-Foaming & Defoamer Agent
Concentrated defoamer and anti-foaming agent formulated to eliminate persistent foam in sizing cookers, storage tanks, and high-speed sizing boxes.

Sizing Anti-Foaming & Defoamer Agent
Agitation, fast pump circulation, and high-shear mechanical action inside warp sizing boxes and size cooking kettles frequently cause heavy foam buildup. Excess foam traps air bubbles within the sizing liquor, resulting in uneven size pickup, micro-voids in the sizing film, and liquor overflow. Sizing Anti-Foaming & Defoamer Agent is a highly concentrated defoamer engineered for fast foam knockdown and long-lasting foam suppression.
Available in high-stability silicone compound and 100% organo-silicone-free polyether formulations, this auxiliary maintains size liquor homogeneity without inducing spot oiliness or interfering with fabric desizing and dyeing.
Key Features & Advantages
- Instant Foam Knockdown: Destroys macro and micro-foam bubbles in seconds upon addition to sizing cookers or size boxes.
- Persistent Foam Suppression: Maintains long-lasting anti-foam efficiency under high-temperature boiling (85°C - 98°C) and continuous pump circulation.
- Ensures Uniform Liquor Density: Prevents trapped air pockets in the size bath, guaranteeing accurate size add-on and consistent film coating.
- Zero Spotting Risk: Highly emulsified and thermally stable; does not cause silicone oil spots or fish-eye defects on warps.
- Broad Compatibility: Compatible with native and modified starches, PVA, CMC, acrylic size polymers, and sizing wax additives.
Industrial Applications
- Sizing Preparation & Storage: Addition to size cooking kettles and size storage tanks to suppress foam during slurry cooking.
- High-Speed Sizing Boxes: Continuous or batch dosing into sizing boxes on high-speed warping/sizing ranges.
- Pre-treatment & Desizing Baths: Application in textile preparation washers and desizing ranges requiring low-foam conditions.
Technical Specifications
| Parameter | Specification / Value |
|---|---|
| Chemical Type | Organo-Polysiloxane Compound / Non-Silicone Polyether |
| Appearance | Milky White Emulsion / Translucent Liquid |
| Active Matter | 20% / 30% / 50% (Customizable) |
| pH (1% Emulsion) | 6.0 - 8.0 |
| Ionic Character | Non-Ionic |
| Emulsion Stability | Excellent stability against high shear and 95°C heat |
| Packaging | 50 kg plastic drums / 120 kg drums / 1000 kg IBC containers |
Quality & Export Supply Information
Every batch of our Sizing Anti-Foaming Agent is laboratory-tested for foam collapse speed and persistent anti-foaming duration. Available in concentrated export-grade formulations. Contact our export sales team for MSDS, TDS, and volume pricing terms.



