The film in the film-coated non-woven bag is a main process of printing and processing. It is to bond the plastic film coated with the adhesive and the paper printed matter or non-woven fabric after heating and pressure to form Paper and plastic products in one.

Laminating is one of the common post-printing processes for paper printed matter and non-woven fabric products. The coated printed matter has an extra layer of thin and transparent plastic film on the surface, which makes the surface smoother and brighter, which not only improves the gloss and firmness of the printed matter, but also prolongs the service life of the printed matter. At the same time, the plastic film plays a role. Moisture-proof, waterproof, anti-fouling, abrasion resistance, folding resistance, chemical corrosion resistance and other protective functions.

If a transparent bright film is used for laminating, the printed pictures and texts of the laminating products will be brighter and full of three-dimensionality, which is especially suitable for packaging of green food and other commodities, which can arouse people’s appetite and consumer desire. If a matt film is used for coating, the coated product will bring consumers a noble and elegant feeling. Therefore, the packaging printed matter after the film can significantly improve the grade and added value of commodity packaging.

The laminating process requires the production personnel engaged in laminating processing to use appropriate processing temperature and pressure according to the properties of paper or fabric and ink, so that the adhesive will firmly bond the plastic film and printed matter into a paper-plastic integrated whole . The quality standard of laminated products: the surface is clean, smooth, not blurred, smooth, no wrinkles, no bubbles, no separation of paper and plastic, no traces of powder and foil. The degree of drying is appropriate, and there is no phenomenon of sticking to the surface film or paper. After laminating, the slitting size is accurate, the edge is smooth, and the film does not come out. There is no obvious curling problem.

During the laminating process, handle the relationship between temperature, pressure and time when the paper cloth and plastic film pass through the thermocompression mechanism. In the fusion stage, control the viscosity of the adhesive, the amount of glue, the temperature of the drying tunnel, the temperature of the hot roller, and the machinery. Factors such as pressure, mechanical speed, etc. can avoid problems such as blistering during laminating and weak paper-plastic bonding.

Guangzhou Tongxing Packaging Products Co.,Ltd. major in many kinds of bags since 2000, OEM/ODM are welcome, any questions please feel free to contact us, many thanks.