In order to combine the properties of different materials, several laminating processes can be used when upgrading web-like materials.
Laminating creates a permanent connection of two materials by pressing them with rollers (exception: transfer laminations, e.g. labels).
For technical reasons, there are differences in working width and the required pressing force. Laminating units are divided into two- and three-roller units to compensate for these differences.
Depending on the space conditions and the process requirements, the laminating units can be installed vertically or horizontally.
Laminating processes are divided into wet and dry laminating methods. The difference lies in the moment of drying.
In both procedures, first the adhesive is applied by rollers. In wet laminating, the lamination process is done directly after coating and the compound is dried then. Another version is dry lamination. Here the adhesive is applied and dried before lamination.
Variants of these laminating processes are laminating with wax and with molten adhesives.
The processes are also influenced by
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