Dry Strength Agent (DS-26 Series)

High-Performance Dry Strength Agent LY-DS-26 Series for Enhanced Fiber Bonding

The LY-DS-26 series represents a new generation of functional strength additives developed using advanced synthesis methodologies and the integration of novel functional monomers. This design imparts a high charge density to the polymer, allowing it to form robust hydrogen bonds with cellulose fibers.

Engineered with excellent water solubility, LY-DS-26 significantly enhances the mechanical strength properties of the finished paper web while maintaining a stable water drainage rate and sheet formation profile. It serves as a technically reliable and cost-effective solution for modern mills striving to optimize stock structures and meet strict compliance standards.

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Technical Specifications & Parameters

Property / Indicator	Technical Standard
Appearance	Colorless transparent to slightly white viscous liquid
Solid Content	15.0% ± 1.0% / 20.0% ± 1.0%
Viscosity (25°C)	3,000 – 15,000 mPa·s
pH Value	3.0 – 5.0
Ionic Properties	Available in Anionic, Cationic, and Amphoteric variants

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Core Technical Advantages & Value Proposition

1. Ultra-Low Acrylamide Residues with International Safety Compliance

The LY-DS-26 series is formulated to restrict free acrylamide (AM) monomer residues to trace, ultra-low levels. The product has successfully cleared the stringent testing requirements for US FDA and GB-9685 certifications. Paper products manufactured using this agent completely fulfill the safety and hygiene protocols outlined in GB/T 20808-2022, making it perfectly suited for food-contact and consumer-grade applications.

2. Mitigation of Paper Dust and Linting Issues

By strengthening the internal fiber network and optimizing surface fiber bonding, the addition of LY-DS-26 effectively mitigates paper linting and dust formation. This reduction in structural dusting improves process efficiency during high-speed papermaking, downstream converting, printing, and end-use handling.

3. Superior Retention Performance Compared to Traditional Starches

Unlike traditional starch-based dry strength additives, LY-DS-26 offers a higher charge density that yields superior fine and fiber retention. Beyond optimizing its own retention, the polymer acts as a secondary retention aid, establishing a synergistic effect that boosts the retention efficiency of other wet-end process chemicals.

4. Optimized Furnish Structure & Low Manufacturing Costs

Integrating LY-DS-26 allows mills to alter their pulp slurry structure, enabling an increased utilization of lower-cost fibers or recycled secondary pulps without compromising target physical strength parameters. This adjustment optimizes raw material costs and reduces overall papermaking operational expenses.

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Application & Dosage Guidelines

To ensure stable chemical dispersion and prevent equipment issues, implement the following operational steps:

• Dilution Protocol: Dilute the concentrated liquid with clean fresh water to a ratio of at least 15 times or more before system injection. Do not use white water or contaminated water loops for chemical dissolution. An online dilution and metering system is highly recommended for continuous feeding.
• Addition Point: Select a strategic wet-end position that guarantees fast, homogeneous mixing with the pulp slurry stock.
• Material Requirements: Storage tanks, dilution vessels, and transport piping must be constructed from FRP, PVC, PE, or stainless steel. Avoid using iron equipment, as iron will cause chemical corrosion and lead to an undesirable increase in product viscosity.
• Chemical Compatibility: LY-DS-26 must not be directly pre-blended or mixed with other chemical additives in the same tank to prevent unexpected chemical reactions.

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Main Product Applications

The LY-DS-26 series features multiple specific models tailored to unique ionic and strength requirements, making it highly effective across a broad spectrum of paper grades:

• Packaging & Industrial Boards: Packaging paper, white board paper, and high-strength yarn-tube/paper-core paper.
• Consumer & Specialty Papers: Household sanitary paper (tissue), cultural writing paper, food-grade packaging paper, and surface-reinforced specialty grades.

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Packaging, Storage & Safe Handling

• Logistics Packaging: Dispatched in secure 25 kg, 200 kg, or 1,000 kg plastic drums/IBC totes to accommodate various automated chemical dosing infrastructures.
• Storage Environment: Store tightly sealed in a cool, dark, and well-ventilated indoor location. Protect fully against direct sunlight and intense heat exposure.
• Shelf Life: 3 months from the manufacturing date when maintained in unopened, original packaging. Note that expired products may suffer a drop in overall technical performance.
• Health & Safety: As an acidic substance, avoid contact with skin and eyes. In case of accidental skin contact, flush thoroughly with clean tap water. In case of eye contact, rinse immediately with tap water and seek prompt medical examination. If accidentally swallowed, induce vomiting and proceed immediately to a hospital.