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Gravure Flexographic Lamination Converting Engineering


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Lamination is the technique of manufacturing a material in multiple layers, so that the composite material achieves improved strength, stability, sound insulation, appearance or other properties from the use of differing materials.

There are different lamination processes, depending on the type of materials to be laminated. The materials used in laminates can be the same or different, depending on the processes.

An example of the type of laminate using different materials would be the application of a layer of plastic film

A laminate is usually permanently assembled by adhesives and bonds by  heat system , “dry lamination”, cold system “ wet lamination”  by  pressing the two layers between a steel cylinder and a rubber coated roller.

the  Extrusion coating method insetad uses a melted polymer as a adhesive between layer s insetad of liquid adhesives.

Adhesives can be:

Solvent base

Water base

Solvent less


Dry lamination

It Is so called DRY LAMINATION thus where two layers are bonded together coating the primary material with adhesive that for its own formulation contains bonding agents, with high viscosity and diluted with solvents or water to reduce the viscosity enable the coating of the web. After the coating the primary web passes into a drying chamber(s) to evaporate the solvent or water, in this way only the bonding agent remain onto the primary web.

after the drying chamber the primary web passes through a nip roll where one heated chromed steel cylinder and a pneumatic pressure rubber roll coated impression cylinder press two layes together the primary coming as said from dryiers and the secondary coming form the second unwinder.

After the lamination the laminated material is cooled wrapping it on two or more chilled rollers then rewinded ready for the next processes






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Aggiornato il: 30 marzo 2014