Laminating film is also called laminating film, which refers to the process of applying laminating adhesive on the film, and then cold pressing with plastic printed matter or paper printed matter, or after heating and drying, and then recombining with plastic printed matter or paper printed matter by hot pressing. . The transparent plastic film is pasted on the surface of the printed matter by hot pressing to protect and increase the gloss.
According to the different raw materials and equipment used, the method of coating the paper printed matter can be divided into three methods: coated film, pre-coated film, and water-based film.
That is, the thin film adhesive used in the coating film process is now coated, and the adhesives used are solvent-based and emulsion-based, which can be formulated at any time.
That is, there are many preliminary preparations for the operation of coating the film. The first is the metering of the solvent and solution to make them fully mixed. Then raise the temperature of the drying tunnel of the laminating machine, and then adjust the wind speed, temperature, air volume and the pressure and temperature of the pressing roller in the drying tunnel. After all the preparations are correct, carry out the laminating operation. After the lamination is completed, the laminating machine should be thoroughly cleaned with alcohol.
Its technological process is: unwinding of plastic film-gluing and coating of glue-drying in drying tunnel-lamination of paper printing products-winding of finished products.
The film used in the pre-coating process is a roll of film coated with adhesive that is produced and supplied by a specialized manufacturer.
The adhesive used is generally hot melt and solvent volatile. The pre-preparation of the pre-coated film is relatively simple, there is no need to prepare an adhesive solution, and there is no need to increase the temperature of the drying tunnel. It is only necessary to adjust the pressure of the pressure roller, the temperature of lamination, and the speed of lamination to adjust to the best state. The laminating operation can be carried out.
Its technological process is: unwinding of plastic film-laminating of paper printing products-winding of finished products.
The water-based film lamination process is a cold lamination operation, and the complexity is between the coated film and the pre-coated film.
It does not need a drying tunnel, no need to increase the temperature of the pressure roller and heating roller, as long as the pressure of the pressure roller, the speed of lamination, and the amount of sizing are controlled. After the film is wound up, it can be cut in about 15 minutes. After the lamination is completed, the laminating machine should be cleaned with clean water.
The technological process is as follows: unwinding of plastic film-gluing and coating of glue-lamination of paper printing products-winding of finished products.
After the printed matter is laminated. Due to the additional thin and transparent plastic film, the printed product is smoother and brighter, the graphics and text are more vivid, and the embossed composite film printed product is more three-dimensional. At the same time, the mechanical strength, water resistance, moisture resistance, stain resistance, wear resistance, folding resistance and chemical corrosion resistance of the printed product after lamination are greatly improved. This will extend the life of the printed product.
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