Water-Based Adhesive Lamination Technology
topic
Water-based lamination applies aqueous acrylic, polyurethane dispersion, or starch-based adhesives at 40 to 60 percent solid content by slot die, gravure, or knife coating at 15 to 40 grams per square metre wet weight, drying in hot air ovens at 80 to 130 degrees Celsius before nip roll bonding, requiring higher drying energy than solvent systems for the same solid coat weight from the higher latent heat of water evaporation but eliminating organic solvent handling and emission requirements.
Role
Provides environmentally compliant adhesive lamination through water-based adhesive systems that eliminate organic solvent emissions and the associated recovery, disposal, and worker exposure costs and regulatory obligations of solvent-based alternatives, with increasing regulatory pressure on VOC emissions driving substitution of solvent-based systems by water-based alternatives wherever adhesive performance requirements can be met by available water-based formulations.