Forums > General Discussion > What are the laminating methods of the laminating machine?
| What are the laminating methods of the laminating machine? | |
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| Posted: 20 Jun 2022 05:30 UTC | Post #1 |
| deguang Deck & Engine |
Registered Total Posts: 7 |
| There are mainly three types of lamination methods: water-based lamination, oil-based lamination and solvent-free lamination. 1. Laminating machine oily coating method Laminating machine oil-based laminating method, with solvent-based polyurethane, alcohol-soluble polyurethane or alcohol-soluble acrylic and other solvent-based laminating adhesives as the main adhesive, mixed with toluene and ethyl acetate in a certain proportion, diluted, coated and dried, and then laminated. The toxicity and use safety problems of type laminating adhesives are becoming more and more prominent, and people are more and more aware of the harm caused by solvent-based laminating adhesives. Laminating machine oil-based laminating methods have basically withdrawn from the laminating market. 2. Laminating machine water-based coating method The water-based laminating machine uses water as the solvent and acrylate as the main component. The water-based laminating method of the Laminating machine is healthier and more environmentally friendly than the oil-based solvent-based glue. Water-based lamination is divided into two types: wet lamination and dry lamination. Laminating machine wet lamination coats the glue directly on the paper, and then cuts it after drying naturally. The advantage is high efficiency, but the disadvantage is that the paper absorbs water. The deformation is large, and the length of the tail film after slitting is not conducive to the paper mounting and die-cutting in the subsequent process. Laminating machine dry lamination is laminating after glue, and the paper is flat and no tail lamination. The defect is that it consumes a lot of electricity during the drying process. It is currently the most popular laminating process in the Chinese market. 3. Laminating machine solvent-free coating method Laminating machine solvent-free laminating method needs to use solvent-free laminating adhesive. It is a kind of polyurethane adhesive, referred to as PUR glue. The full name is moisture-curing reactive polyurethane hot-melt adhesive. The polymer reacts with moisture in the air, curing and crosslinking to form a stable chemical structure. It has strong adhesion with paper fiber, good resistance to high cold and high heat, and can be stored for a long time. Different from traditional hot melt adhesives, because it contains chemical functional groups when it is melted, it will react with moisture in the air to form an irreversible substance, that is, it cannot be melted twice. laminating machine：https://ww w.deguang-machine.co m/Fully-Automatic-Hi gh-Speed-Dry-Laminat ing-Machine.html | |
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