Self-seal latex adhesive engineered for modern high-speed envelope production. This water-based formulation delivers clean, efficient operation with low maintenance requirements, making it an excellent choice for manufacturers running continuous production lines.
The cream-coloured formulation runs cleanly through application systems with minimal build-up, maintaining consistent performance throughout extended production runs.
AQUAPAL L491 has been developed specifically to meet the demands of modern high-speed envelope production. The formulation maintains consistent tack and bond strength even at elevated line speeds, allowing manufacturers to maximise throughput without sacrificing seal quality or reliability.
The clean-running characteristics mean less frequent equipment cleaning and reduced production interruptions. Unlike some self-seal adhesives that can build up on rollers and coating heads, AQUAPAL L491 maintains fluid flow characteristics that minimise crusting and hardening, directly reducing labour costs and improving overall equipment effectiveness.
Good mileage characteristics mean lower adhesive consumption per thousand envelopes, reducing material costs whilst maintaining the bond strength and closure security that customers expect. This efficiency, combined with reduced maintenance requirements, makes AQUAPAL L491 an economical choice for volume envelope production.
AQUAPAL L491 is a self-seal latex adhesive.. The adhesive creates a permanent, pressure-sensitive bond when the envelope flap is pressed to the body, eliminating the need for moisture activation. This makes self-seal envelopes particularly convenient for office use and high-volume mailing operations where speed and ease of use are priorities. The formulation bonds well to standard envelope papers and maintains its adhesive properties over extended periods, providing reliable closure even after envelopes have been in storage. The cream colour provides good contrast during application for visual quality control whilst remaining unobtrusive on the finished envelope. The adhesive’s rheology has been optimised for clean release from coating equipment and uniform film formation on the substrate.
Print Finishing, Envelopes
Dispersion Adhesive
Cream
Roller, Spray
1550 centiPoise
58.0%
N/A
N/A
Liquid
Envelope Stock, Card, Paper
Follow standard safety practices for handling water-based adhesives. Wear protective gloves and eye protection during application operations. Maintain good ventilation in work areas and avoid breathing vapours or mists. In case of skin contact, wash thoroughly with soap and water. Keep away from heat sources and open flames. Consult the product Safety Data Sheet for detailed safety information, handling procedures, and emergency response measures. Dispose of waste material according to local environmental regulations.
Follow standard safety practices for handling water-based adhesives. Wear protective gloves and eye protection during application operations. Maintain good ventilation in work areas and avoid breathing vapours or mists. In case of skin contact, wash thoroughly with soap and water. Keep away from heat sources and open flames. Consult the product Safety Data Sheet for detailed safety information, handling procedures, and emergency response measures. Dispose of waste material according to local environmental regulations.
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