Chất tạo lớp phủ bề mặt styrene-acrylic

High-Performance Cationic Styrene Acrylic Surface Sizing Agent LY-BB201

LY-BB201 is an advanced cationic styrene acrylic surface sizing agent synthesized from premium raw materials including styrene, acrylate, and methyl methacrylate. Developed through our advanced polymerization technology and specialized chemical processing, this high-molecular polymer emulsion is engineered to deliver exceptional binding efficiency when coupled with surface starch solutions at the size press.

By remaining uniformly on the paper web surface, LY-BB201 seamlessly integrates into the starch coating matrix, endowing it with superior cross-linking strength and exceptional hydrophobicity. It serves as a cost-efficient, high-barrier alternative for modern packaging and containerboard mills striving to optimize wet-end chemistry and enhance structural sheet properties.

Technical Specifications & Parameters

Property / Indicator	Technical Standard
Appearance	Light brown liquid
Solid Content	30% ± 1%
Viscosity (25°C)	≤ 50 mPa·s
Specific Gravity	1.12 – 1.14 g/cm³
pH Value	2.0 – 5.0
Ionic Charge Type	Cationic
Solubility	Dissolves easily in cold water

Core Technical Advantages & Value Proposition

1. Cost Optimization via Internal Sizing Substitution

LY-BB201 can completely replace the use of traditional internal sizing agents within the pulp stock. By shifting the sizing workload from the wet end to the surface size press and combining efficiently with starch, it dramatically reduces overall chemical additive consumption and optimizes total manufacturing costs per ton.

2. Significant Boost to Ring Crush Test (RCT) Values

For high-demand packaging papers, surface integrity and structural stiffness are paramount. LY-BB201 forms an interconnected, high-strength polymeric film across the paper surface that significantly reinforces fiber-to-fiber bonding. This mechanical upgrade substantially improves the Ring Compression Strength (RCT) of heavy-duty paperboards.

3. Greatly Improved Water Resistance & Anti-Moisture Barrier

The combination of styrene acrylic monomers creates a dense, highly hydrophobic barrier that slows down water penetration. Finished papers sized with LY-BB201 exhibit greatly improved water resistance (excellent Cobb values), ensuring that corrugated boxes and linerboards retain their structural shape and do not collapse under humid warehousing or transit conditions.

4. Cleaner Wet-End Loop & Enhanced Process Efficiency

By eliminating or minimizing internal sizing chemicals in the stock preparation system, LY-BB201 reduces chemical carryover, wet-end foam buildup, and machine deposits. This results in a much cleaner white water circulation loop, reduces sheet breakages, protects forming wires and felts, and facilitates simpler wastewater treatment protocols.

Main Product Applications

LY-BB201 features an exceptionally wide application scope across modern high-speed surface sizing production lines, showing excellent results in:

• Industrial & Heavy-Duty Packaging: Corrugated paper, linerboards, kraft paper, and test liners requiring strict water-repellency and high crush resistance.
• Premium Commercial Boards: White board paper, ivory boards, and white-lined chipboards requiring precise surface printability and structural stiffness.

Packaging, Storage & Handling

• Standard Packaging: Dispatched in heavy-duty 200 kg plastic drums or 1,000 kg IBC tote containers to seamlessly fit automated chemical feeding and metering infrastructures.
• Storage Environment: Maintain under pristine warehouse conditions at ambient temperatures above 5°C and below 30°C. Keep stored in a cool, dry, and properly ventilated environment. Protect against freezing conditions and intense direct sunlight exposure.
• Shelf Life: 3 months from the manufacturing date when maintained in its original, unopened, and properly sealed packaging.