1. Solvent-based: solvent + polymer+resin+additives
2. Water-borne: water+polymer + resin dispersion + wetting agent + thickener + preserative
3. 100% solids: hot melt or reactive 1 or 2 polymer system
Adhesive lamination is the process where a solution or emulsion of low molecular weight polymer adhesive material is coated on to the surface of one substrate before joining the second substrate.
Lamination process for different product is selected on the basis of characterstics of product packed in side. We find that solvent base lamination is suitable for all type of lamination like laminate for food products, metalize film lamination, chemicals products, etc. Solventless lamination is less preferable for metalized film lamiantions. Solvent less lamination is suitable for all type of juice packaging and in some packaging where ethyle solution is not required in solvent. Solventless lamination is also suitable for ready to eat products and for light weight products. Water-borne lamination can be used where one of the laminating substrate is paper, suitable for all type of light weight product packaging as well.
According to a specific adhesion analysis report, the suitability of lamination for different product depends on the property of product inside packed. As regard we are choosing lamination process we have to check product properties and process characteristics like adhesive used, curing time, solvent used, etc. Also during lamination process we have to take proper care so that to avoid defects occurs during process.
