866A 866B Solvent-Free Polyurethane Adhesive with Medium Resistance High Strength and 121C x 40 min Steaming Resistance for Flexible Packaging Lamination

Product Overview

Huitian 866A/866B two-component solvent-free polyurethane adhesive is engineered for the inner layer lamination of boiling and steaming flexible packaging. The adhesive features moderate viscosity, excellent wettability and certain medium resistance, delivering high strength and good inner layer smoothness without affecting film openability.

Key Features

• Certain medium resistance for oil, acid and alkali exposure
• High bond strength for demanding packaging structures
• Good inner layer smoothness and film openability
• 100% solids solvent-free with excellent wettability
• Translucent, elastic and anti-aging cured adhesive layer
• Withstands water boiling and steaming performance requirements

Applications

• Inner layer lamination of retort and boiling pouches
• PET/AL/RCPP, PET/AL/NY/RCPP steaming structures
• NY/RCPP and PET/VMPET/PET/PE combinations
• Flexible packaging requiring medium chemical resistance

Typical Technical Parameters

Directions for Use & Precautions

• Mix at the standard mass ratio of 100:80 (866A:866B) in an automatic glue mixer.
• Corona-treat films to reach appropriate surface tension before lamination.
• Adjust the ratio between 100:65 and 100:85 according to ambient humidity and lamination structure.
• Verify outer high-barrier structures (PET/AL, PET/VMPET) with full process testing.
• Seal opened containers immediately to prevent moisture absorption.
• Install exhaust hood on the coating system and check isocyanate concentration before production.

FAQ