Cationic Surface Sizing Agent
Improving Paper Surface Strength: Cationic Surface Sizing Agent
The Azsize® S605 series is a range of styrene-acrylic ester high molecular polymers designed for surface sizing in papermaking. These products enhance surface strength, ring compression strength, and water resistance, making them ideal for improving paper quality.
- S605A: Strengthens fiber binding, works with starch for surface sizing, and reduces shedding of wool and powder during coating.
- S605B: Used in sizing press equipment with starch, requires aluminum sulfate for waste paper pulp but not for chemical pulp, and has low foam, reducing the need for defoamers.
- S605C: Highly adaptable to the paper machine process, compensates for fluctuations in water resistance, and improves the paper’s water resistance index, but requires an antifoam agent due to foam formation.
Application Benefits
Surface sizing agents form a compact hydrophobic film on paper surfaces, significantly improving printability by enhancing ink adhesion and image clarity. At the same time, they increase water vapor barrier properties, reducing paper hygroscopicity and improving storage and transport stability. Ideal for moisture-sensitive applications such as food and industrial packaging.
| Product Name | Applicable paper types | Performance characteristics |
| Azsize® S605A | Self-coated linerboard, Boxboard, High-strength corrugated paper | Stable water resistance, high cost performance |
| Azsize® S605B | Coated self-coated board, Cardboard, High-grade boxboard, High-strength corrugated paper | Low foam, strong resistance to paper machine fluctuations, good compatibility |
| Azsize® S605C | Coated white board, Food cardboard, Linerboard and other high-grade packaging paper | Strong cationic polymer-based surface glue, good sizing performance,
strong anti-interference, and low dependence on AI3+. |
Application
- Production paper type.
- Added chemical types (aluminum sulfate, self-enhancing agent) compatibility.
- Performance requirements (water resistance, enhanced performance, moisture repellency, running performance).
- Gluing process conditions .(equipment, starch, etc.)
- Gluing cost.
Packaging and storage
- 200kg PE drums; 1050kg IBC tanks.
- Store in a dry, cool and well-ventilated place, avoid storing in the open air, at room temperature.(4-30 °C indoor cool place)
- Shelf life: 6 months.
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