Talking about the emerging glueless film coating technology
Conventional coating technology adopts the form of adhesive coating, such as solvent-based glue, water-based glue or hot melt adhesive pre-coated on the coating material for hot pressing. The non-adhesive film is different. It does not use the conventional biaxially oriented polypropylene film (OPP), but the PE film with high pressure polyethylene as the main material, because the PE film has better hot melt plasticity. After a special strong treatment on one side of the film, the PE film can be hot melt compounded on the color printing paper with a glueless laminating machine.
This glue-free film can stand rubbing without foaming, can withstand temperatures of 20 ~ 120 ℃, and can withstand rolling, cutting, etc. During the glue-free laminating process, a layer of auxiliary material is placed between the heating roller and the PE film, and passes through the glue-free laminating machine together, and then the coated product is removed from the auxiliary material. Because the materials used are different, the same kind of PE film can make light film, matt or other effects.
The glue-free film coating technology does not use glue, and its advantages are very obvious: it greatly reduces the cost; there are no harmful gases that are easy to volatilize and penetrate in the production, which ensures safety; it is easy to recycle and generates less waste; The thickness is small, and only a small pressure is required during operation. The glue-free film coating technology is a technological innovation for the existing PE film coating on the market.
SHANDONG CAIFENG INTERNATIONAL TRADING Co., Ltd. , https://www.zihcaifeng.com