The lamination mechanism of water-based laminating adhesives involves evenly coating the liquid adhesive on the film and then directly wet-bonding it to the printed paper. The bonding is achieved through the penetration of adhesive molecules. Here are several notable issues in the lamination process for your reference.

The adhesive is water-based, so the printed materials to be laminated must have strong water absorption. Printed materials with poor water absorption cannot be laminated with this type of adhesive.

For printed materials that contain products such as gold ink, samples must be tested first. Only when there is no discoloration reaction to the gold ink can it be used in bulk.

③ The laminated product on the winding roller can only be cut after the adhesive film becomes transparent, which takes about 20 minutes

④ If it is necessary to deboss the laminated product, it should be left for 24 hours before proceeding.

⑤ If the four corners of the laminated cardboard are warped, it may be caused by excessive glue application, resulting in too much shrinkage stress in the glue layer, or by high moisture content in the cardboard, which should be controlled.

⑥ Glues from different manufacturers should not be mixed and used, as this may lead to glue polymerization and other issues, affecting the laminating effect.

⑦ For temperatures below 10℃, the low-temperature activity of the adhesive should be tested before use. If the low-temperature performance is poor, the adhesive should be heated using a water bath to raise its temperature above 10℃. This will ensure sufficient bonding.