Dry Strength Agent
High-Performance Dry Strength Agent for Enhanced Paper Durability
Azfc® DS Series is a high-performance dry strength agent widely used across various paper grades, including packaging paper, tissue paper, newsprint, and cultural paper. Designed to improve paper quality and reduce production costs, Azfc® DS Series enhances key physical properties such as folding resistance, burst strength, stiffness, and ring compression strength. Thanks to its high molecular weight and volume, it forms more hydrogen bonds and remains effectively on the fiber surface, delivering superior reinforcing performance even in papers made from recycled fibers or high filler content.
This dry strength agent operates effectively across the full pH range, fully ionizing in solution to form strong ionic and hydrogen bonds with pulp fibers. The product promotes enhanced fiber bonding through cation-anion interactions and functional groups such as amides and hydroxyls. As a result, Azfc® DS Series not only boosts paper dry strength by more than 10%, but also improves fines retention and drainage, making it the ideal choice for papermakers seeking strength enhancement and operational efficiency.
| Product Name | Appearance | Solid Content (%) | pH Value | Viscosity (cps) | Ion type |
| Azfc® DS1500 | Viscous transparent liquid | 15.0±1.0 | 3.5-5.0 | 3000 -12000 | Amphoteric |
| Azfc® DS2000 | Viscous transparent liquid | 20.0±1.0 | 3.5-5.0 | 3000 -12000 | Amphoteric |
Application
Azfc® DS Series can improve physical indicators such as tensile strength, stiffness, ring compression strength, burst resistance, folding resistance, etc. Increase the retention rate of microfiber and filler, and improve water filtration performance. Dilute the product around 15-30 times with cold fresh water and then add to the stuff after stirring the product uniformly.
- Add 10-20 KG per ton of paper.
- Add point: To the position where it can mix fully with the stuff, so the optimal position is between the full stuff tower exit and fan pump entrance.
Packaging and storage
- 200kg PE drums; 1000 kg IBC tanks; Flexi bag.
- Store in a dry, cool and well-ventilated place, avoid storing in the open air, don’t mix with other chemicals, at room temperature. (4-30 °C indoor cool place)
- Shelf life: 6 months.
