The usual coatings are all in the form of adhesive coatings, such as solvent-based adhesives. Water glue and hot melt glue are pre-coated on the film for hot pressing. The non-adhesive film is different from this. It does not use the conventional biaxially oriented polypropylene film (OPP), but uses a high-pressure polyethylene-based PE film, because the PE film has better hot melt and plastic . After a special strong treatment on one side of the PE film, the PE film is hot-melted 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. Put a layer of auxiliary material between the heat roller and the PE film, pass through the glue-free film laminator together, and then remove the film product from the auxiliary material. Because the materials used are different, the same kind of PE film can be used to make a light film. Matte film, laser film and other lamination products.
The advantages of this technology are very obvious. Because no glue is used, the cost is greatly reduced; there are no harmful gases that are easily volatile and permeable in production to ensure safety; the test proves that it is easy to recycle; the thickness of the clamor used by this technology is low, In the hot-melt state, this thickness of glue is lower than the thickness of the glue layer with glue coating, so only a small pressure is required during operation, and no powder is required. The glue-free film coating technology is a technological innovation for the existing PE film coating on the market.
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