Adhesive lamination is the process in which two or more flexible packaging substrates are bonded together using a glue system.
These substrates are comprised of films, aluminum foils, papers. Flexible packaging laminates are common films used in the flexible packaging world, as they can be used for a wide range of applications owing to their properties. Various methods are used to bond the film layers, using adhesive for dry lamination or adhesives for solventless lamiantion.
Several methods are used for flexible packaging lamination, the most common of which is laminating process using a layer of adhesive system that consists of two components.
Laminating adhesives for flexible packaging can be:
- solvent based, in which the solvent evaporates in the drying process. However, these adhesives are considered less environmentally and human friendly.
- Solventless, in other words do not contain any solvents, are preferable in the modern lamination process, without the need for drying.
- water-based adhesives are gaining a greater share owing to the fact that they are less harmful environmentally and to health. However, compared to solvents they require a longer drying time due to relatively slow water evaporation.
