5. Application

• Stirring: Some precipitation may occur during storage. Stir the product thoroughly before use to ensure uniform mixing. If the application process is extended, stir every 2 hours for 3-5 minutes.
• Dilution: Dilute as needed based on operational requirements. The diluted product should be used immediately and not stored for long periods.
  • Brush Coating: No dilution required.
  • Roller Coating: No dilution required.
  • Dipping: 100 parts of 841 + 40-70 parts diluent.
  • Spraying: 100 parts of 841 + 40-70 parts diluent.
• Coating: Can be applied by brushing, dipping, rolling, or spraying. Ensure an even coat to prevent excessive spillage.
• Dry Film Thickness (DFT): 15-30 μm per single coat.
• Drying Time: At 25°C, drying takes 45-60 minutes. For forced drying, gradually increase the temperature to 60°C to prevent bubble formation in the adhesive film.
• Pre-Drying: For optimal bonding, pre-dry at 100°C for 1 hour (recommended 2 hours). For the best adhesive strength and resistance, pre-drying for 4-8 hours at 100°C is recommended.
  • Maximum Pre-Drying Temperatures:
    • 100°C: Up to 48 hours
    • 110°C: Up to 24 hours
    • 120°C: Up to 15 hours
    • 130°C: Must be carefully controlled.
• Storage: Store in a dry, temperature-controlled environment, avoiding prolonged exposure to high humidity and high temperatures.
• Cleaning: Before heating and vulcanization, remove any excess adhesive using a rag soaked in 2-Butanone solvent. Once cured, the adhesive cannot be removed with solvents.
• Vulcanization: For optimal adhesive performance, vulcanize both the polyurethane elastomer and adhesive simultaneously. The vulcanization temperature should ideally be above 75°C.

6. Shelf Life/Storage

The shelf life is 12 months from the date of shipment when stored at 21-27°C (70-80°F) in the original, unopened container. Do not store or use near heat, sparks, or open flames.

7. Precautions

• This product is volatile—always close the container after use.
• The solvent vapors are harmful. Ensure proper ventilation in the workspace, avoid prolonged inhalation or skin contact, and take precautions against fire hazards.
• Refer to the Safety Data Sheet (SDS) for more detailed safety information.