In the high-volume business sectors of international trade, finance, logistics routing, and formal  administrative auditing, the demand for clear, multi-ply duplicating records remains robust. High-quality  Non-Carbon Required (NCR) or Carbonless Copy Paper relies fundamentally on precise chemical fluid  dispersion, non-destructive layer coating, and consistent moisture balancing across the paper web. Qingdao JIERUIXIN Machinery & Technology Co., Ltd. compiles over 20 years of active engineering  and research expertise to produce standard-setting, turnkey carbonless coating machinery assemblies.  By delivering advanced low-tension mechanical frameworks integrated with targeted chemical slurry  knowledge, JIERUIXIN allows paper manufacturers to achieve high production efficiency, minimal  material core loss, and crisp image reproduction.

1. Technical Profiles & Operational Parameters

The following data represents the core engineering specifications of the JIERUIXIN Carboxylated Styrene-Butadiene (XSBR) Latex, drawing direct parameters from integrated operational logs and chemical synthesis blueprints:

2. Advanced Operational Production Workflow 

chambers to turn raw monomers into finished, ready-to-use chemical binders: 

• Monomer Emulsification Zone: Styrene and Butadiene monomers are blended with functional  carboxylic acids (Acrylic/Itaconic acid) in a deionized water medium. High-shear agitators create a stable  emulsion using anionic surfactants (SDS) and non-ionic stabilizers. 

• Controlled Polymerization Cycle: The reaction is initiated using water-soluble persulfates (KPS) in  a temperature-controlled reactor at 50°C–70°C. This “hot process” allows for precise control over chain  branching and molecular weight distribution. 

• Grafted Carboxylation Phase: Carboxyl groups are strategically grafted onto the polymer backbone,  providing the critical “anchor points” for superior pigment binding and mechanical stability during high-speed coating. 

• Vacuum Devolatilization: Post-reaction, the latex undergoes multi-stage vacuum stripping to remove  unreacted monomers, ensuring the final product meets strict safety and environmental standards. 

• Micro-Filtration & Stabilization: The latex is pH-adjusted and stabilized with specialized  antioxidants. It then passes through a 150-mesh filtration system to eliminate micro-coagulum before  packaging.

3. Chemical Synergy & Slurry Preparation  Infrastructure 

Unlike suppliers who only build mechanical frames, JIERUIXIN balances machinery design with deep  chemical fluid knowledge to ensure high coating legibility: 

XSBR Latex Binder Formulation The binder layer requires high chemical precision. JIERUIXIN uses  high-styrene XSBR (60% Styrene ratio) for paper coating to provide the necessary stiffness and surface  gloss. If the styrene ratio is too low, the paper becomes too soft and prone to “picking” during offset  printing. If too high, the film becomes brittle, leading to fold cracking. 

Inline Chemical Plant Component Structure Every JIERUIXIN coating system integrates a dedicated  chemical kitchen for latex handling: 

• 1x High-speed slurry dispersion tank for thorough pigment wetting and latex integration. 

• 2x Main compounding and blending tanks with low-speed agitators to prevent latex skinning. 

• 2x Coater-head feeding buffer tanks with automatic level indicators for continuous supply. 

• 5x Low-shear progressive cavity chemical pumps to transport the latex safely without premature  coagulation.

4. Troubleshooting Framework & Process Control  Matrix 

To ensure continuous production without unexpected downtime, JIERUIXIN lines use closed-loop  automation to diagnose and correct potential operational and chemical failures immediately: 

Question/Problem 1: Mechanical Instability or Coagulum Formation

• Root Cause: Excessive shear velocity in pumps or incompatibility with high-electrolyte pigments (e.g.,  Calcium Carbonate). 

• Solution: Attenuate pump frequency, switch to low-shear diaphragm pumps, and ensure the latex pH  remains within the 7.5–9.0 benchmark. 

Question/Problem 2: Excessive Foaming during High-Speed Coating 

• Root Cause: High surface activity of surfactants or air entrainment at the coater head. 

• Solution: Integrate a silicone-free defoamer at 0.1%–0.3% dosage and optimize the coater blade attack  angle to minimize air vortex. 

Question/Problem 3: Surface “Picking” or Low Ink Receptivity 

• Root Cause: Inadequate latex dosage or incorrect Tg profile for the specific paper grade. 

• Solution: Increase the XSBR parts in the formulation (target 12-15 parts) and ramp up drying oven  temperatures to “set” the binder quickly. 

Question/Problem 4: Web Cockling or Chronic Post-Winding Curl 

• Root Cause: Uneven binder distribution or inadequate moisture restoration in the drying sections. 

• Solution: Sync multi-stage heating zones within the ±2°C benchmark and recalibrate the EPC alignment  optics.

5. Specialized Strategic & Core Advantages of  JIERUIXIN 

1. Over 20 Years of Focused Manufacturing and Quality Engineering: Qingdao JIERUIXIN has  focused exclusively on high-precision paper converting and chemical synergy for more than two  decades. Every batch of latex undergoes strict in-house quality testing. 

2. Complete Mechanical Hardware & Chemical Recipe Synergy: JIERUIXIN provides a complete  system by delivering both advanced coating machinery and optimized chemical recipes, ensuring  seamless material-machine compatibility. 

3. Customizable Performance Profiles: By adjusting the Styrene-to-Butadiene ratio and carboxylation  level, JIERUIXIN can provide latex tailored for specific industrial needs, from flexible textile backings  to rigid paper coatings. 

4. Low VOC & Environmental Compliance: Advanced stripping technology ensures that our SBR latex  meets the most stringent international standards for indoor air quality and food-contact safety. 

5. Established Global Footprint and Export Reliability: JIERUIXIN products are exported to  more than 20 countries worldwide, demonstrating compliance with strict international quality and  operational standards.

6. Technical Commissioning & Performance Validation  Metrics 

To ensure maximum uptime and maintain top product quality, JIERUIXIN implements several strict  verification standards: 

• IGT Pick Resistance Test: Mechanical printing pressure tests verify the ability of the coated surface  to resist ink “picking” at high speeds.

• Viscosity Stability Profile: Monitoring viscosity over a 48-hour period under constant agitation to  ensure no thickening or skinning occurs. 

• Calcium Ion Stability Audit: Testing the latex’s resistance to coagulation when mixed with high  concentrations of Calcium Carbonate pigments. 

• Cross-Web Profile Consistency: Weight variation must remain within ±0.3 g/m² to ensure identical  copy sensitivity across the entire roll.

7. Conclusion

The JIERUIXIN High-Performance Carboxylated SBR Latex combines high-precision chemical engineering  with robust industrial application knowledge. For paper convertors and construction manufacturers  looking to expand their market share, JIERUIXIN provides a reliable, efficient, and complete turnkey solution.