AKD Neutral Sizing Agent

High-Performance Alkylketene Dimer (AKD) Neutral Sizing Agent LY-AKD301

LY-AKD301 is a premium, high-efficiency Alkylketene Dimer (AKD) emulsion designed to entirely overcome the inherent operational disadvantages associated with traditional acid sizing systems. Available in both Ordinary and High-Temperature-Resistant grades, this advanced chemical agent provides superior sizing efficiency across a massive spectrum of paper grades.

By establishing permanent covalent bonds with cellulose fibers under neutral-to-alkaline conditions, LY-AKD301 significantly boosts physical paper strength, improves energy efficiency, and maximizes paper mill throughput. It serves as a benchmark solution for contemporary high-speed paper machines prioritizing clean wet-end operations and minimized carbon footprints.

Technical Specifications & Parameters

Property / Indicator	Technical Standard
Appearance	Milky white liquid
Solid Content	(12.5%, 15%, 18%) ± 1%
Viscosity (25°C)	≤ 50 mPa·s
pH Value	2.0 – 4.0
Ionic Charge Type	Cationic
Solubility	Dissolves easily in cold water

Core Technical Advantages & Value Proposition

1. Exceptional Sizing Efficiency & Heavy Sizing Stability

LY-AKD301 features high reactive chemical activity, providing an exceptional sizing effect that allows mills to run heavy sizing configurations without sizing regression or aging degradation. The resultant paper gains superior, long-lasting liquid resistance, which significantly extends the physical lifespan and storage durability of finished paper products.

2. Comprehensive Improvement in Paper Quality

Integrating LY-AKD301 into the wet end elevates multiple critical physical and optical parameters of the paper sheet. It yields noticeable improvements in whiteness, opacity, printability, and mechanical surface strength. This ensures sharper ink definitions and minimizes dusting or picking during high-speed commercial printing runs.

3. Maximum Fiber Cost Optimization via Ground Calcium Carbonate (GCC)

Operating in a reliable neutral sizing environment allows paper mills to completely substitute expensive calcined clay or talc with heavy ground calcium carbonate (GCC) as a primary filler. Furthermore, the system’s chemical tolerance permits a higher utilization rate of short fibers and broke (recycled damaged paper) instead of long fibers, dramatically lowering the overall cost per ton of papermaking.

4. Energy Conservation & Cleaner Wet-End Operations

The high fiber affinity of LY-AKD301 decreases refining energy consumption and minimizes steam demands in the drying section, leading to notable energy savings. Additionally, it maintains a cleaner, deposit-free wet-end system, significantly curtails paper machine corrosion, and simplifies white water loop closure to drastically lower wastewater treatment volumes.

Application & Dosage Guidelines

To capture the highest chemical retention and target Cobb values, implement the following industrial procedures:

• Addition Points: LY-AKD301 can be added directly as a concentrate to thick stock or diluted and fed into the stock mixing tank. For maximum distribution, it is best introduced continuously via a metering pump directly before or after the fan pump.
• System Synergy: For optimal performance, it should be co-dosed alongside cationic starch and polyacrylamide (PAM) retention aids.
• Recommended Dosage:
  • For standard sizing targets: 1% to 2% based on absolute dry pulp weight.
  • For heavy barrier/sizing targets: 3% to 4% based on absolute dry pulp weight.
• System Environment: Sizing must be executed under strict neutral papermaking conditions.

Main Product Applications

LY-AKD301 features an extraordinarily wide application scope across modern paper manufacturing sectors, proving highly effective for:

• Culture Paper & Art Paper: Premium writing and printing sheets, high-end offset paper, and coated copper-board papers demanding strict brightness and anti-aging properties.
• Packaging Paper Grades: Premium linerboards, folding boxboards, and kraft materials requiring consistent internal sizing protection.

Packaging, Storage & Handling

• Packaging Logistics: Shipped in heavy-duty 200 kg plastic drums or 1,000 kg IBC tote containers to seamlessly match automated chemical feeding infrastructures.
• Storage Environment: Maintain pristine conditions inside a cool, dry, and properly ventilated facility at temperatures between 5°C and 30°C. Prevent any direct exposure to sunlight and avoid freezing conditions.
• Shelf Life: 3 months from the manufacturing date when stored in original, unopened packaging.