One is the liquid glue in the machine on the glue, and the film through the surface covered with glue and then through the heating, pressing the roll wheel. It generally used in the printing plant and the processing plant. The other is to buy back the film has been coated on the surface of the glue, as long as the heating, and it can be laminated by pressure. This film is called the pre-coating film. Generally speaking, the picture of the surface of the film are precoated film.
1. According to the difference of the equipment, the coiling block film mulching can be diveded into the body?paper composite film making on the label machine and the body?paper film. This is a traditional way of film mulching. In recent years, it has been used in the process of the composite film without backing paper. The linerless composite film, label machine, laminating principle with subleveling paper composite film process basic directions. The non bottom paper film is replaced by the surface smoothness (surface tension) of the self material after the backing paper, the adhesive is adhered to the surface of the base paper, and can also be separated from the surface of the adhesive. BOPP thin film with low surface tension as the material used in the paper. The film with low cost is the most widely used one. 2. The single sheet of paper based on the function of the film and the characteristics of the composite film, sheet of paper adhesive label has two kinds of coating: the coating is coated on the machine. Composite process is: first, in reel BOPP film surface adhesive coating and drying device enable the adhesive solvent, then in composite station will be fed with drum membrane composite, in the hot roller extrusion under the second is, film processing. The pre-coated composite film surface is pre-coated with adhesive, hot melt adhesive type and pressure sensitive type two films. The laminating machine is provided with a heating embossing roller, the film is coated with a single sheet of paper contact, under the action of the hot press roller, the adhesive melts, so that the film with the paper adhesive into one. When the pressure sensitive composite film is used, the heating power can be switched off, and the pressure can only be combined with the pressure.
The film itself is for waterproof and beauty. The product line is must be torn down. Those products can be restored to the appearance of the paper and the adhesive must be not touched cut. The die - cutting no film on the way, none of which factory is willing to help you to cover a washing drum. If it can be flatten, you can polish it. First, to put on a layer of polishing glue and polish it with the calender. This process should also be waterproofed.
