The process of rotary laminating machine is mainly divided into semi-automatic operation and fully automatic operation. Although the specific operations of semi-automatic and full-automatic are somewhat different, the principle is the same: first, the adhesive is applied to the plastic film by a roller coating device, and the film is softened by heating with a hot pressing roller, and then the coating is applied The printed matter of the base material and the film are pressed together to form a paper-plastic integrated film product.
The reason for the vacuum rotary laminating machine is that the surface tension value of the glazing paint is large. The wetting effect of the outer ink layer of the printed matter is not good. The surface tension value should be reduced to improve the wettability of the ink layer of the coating; the solvent in the coating is poorly volatilized, the residual solvent in the coating is high, and the volatilization rate can be changed to high The solvent may make the coating completely dry and then press it; it may also be that the speed of the coating is too fast, the drying temperature is low, the coating is not completely dried, and the solvent is not completely evaporated, you should adjust the coating Process conditions; the ink layer on the surface of the printed matter will also crystallize, which requires effective measures, such as removing the oil on the crystallized surface of the ink layer or performing a roughening treatment to improve the wetting effect of the coating on the ink layer to weaken or Eliminate the adverse effects of ink layer crystallization on glaze coating.

Fully automatic laminating machine manufacturers: The laminating temperature is very important, so the hot laminating machine has better laminating effect than the cold laminating machine. The temperature control of the laminating machine must be appropriate. The amount of printed matter on cold or rainy days should be kept for a period of time. If the temperature If the adjustment is not suitable, the coated product will not shine. When laminating, sometimes there are obvious water droplets or steam on the silicone roller, which is caused by the paper absorbing a lot of moisture. The film laminating temperature of such products must be raised a little bit more. If the film temperature is adjusted too high, it will foam. Therefore, the temperature of the heating steel drum must be controlled according to the characteristics of the product when laminating.
With the development of the advertising industry and the application of digital fast printing technology, many advertising graphic equipment, such as cold laminating equipment used for cover processing, have developed rapidly in the past two years. Laminating machines, "cold laminating" and "hot" "Mounting" is two processing methods of laminating machine. At present, there are several brands of cold laminating equipment currently on the market, and the prices vary greatly. The quality of the product is good or bad. Jintu Laminating Machine reminds that the price is not the only factor for buying a laminating machine. The price of the laminating machine is also variable according to different configurations or working side. Choosing the right cold laminating film machine can be like a Chinese medicine doctor, looking for four steps.

The small laminating machine handles the fundamental problem of the first laminating machine. The laminating machine price is between 1400-1500 yuan, because the internal hot rubber roller is used to press the film and enter the film up and down, which increases the heating time of the pre-coated film, and The heat is balanced, so the film covered is flat, bright and has the same function as the film covered by the advanced film laminator. Only this type of laminator has a heating power of only 500W, although the temperature is adjustable but the speed is fixed, it can press the film 0.7-0.8 meters per minute. Suitable for hand prick film, recipe film, photo film and graphic print film, especially some small printing plants, typing copy shops, hand prick manufacturing companies and photo studios, in order to reduce equipment investment and reduce costs, so choose this type There are more laminators. At present, the market prospect of this type of laminating machine is very good. It can be said that this laminating machine is the most cost-effective.
Laminating is mainly to compound a layer of film on the surface of our printed books and periodicals packaging, so that our printed products are stronger and more beautiful. To put it simply: the laminating film is passed through the unwinding device through a laminating machine, and then the adhesive is applied through a coating tank equipped with adhesive. The solvent type is the coating of the adhesive through the action of glue and solvent, while the water-based type is coated with water-soluble glue. After coating, it is dried, and after drying, it is compounded with paper to complete the coating film. The process of pre-coating film is basically that the pre-coating film is compounded in the factory. Its synthesis is to synthesize five layers: substrate, coating agent, and glue. The glue used is food-grade.

In order to obtain aspiring laminating results, the pre-coating laminating machine not only requires adhesives, plastic films and printed products to have excellent adhesive compliance, but also needs to have a compliant laminating equipment. Laminating equipment deployment can be divided into two major categories, namely coating film machine and pre-coating film machine. That is, the coating film machine has a wide practical range and stable and reliable processing performance. It is now widely used in the deployment of coating equipment in China. Pre-coating film machine, no gluing and drying department, small size, low cost, convenient operation and maneuvering, not only practical laminating processing of large batches of printed products, but also practical and automatic desktop office system and other small batch, sporadic printed film laminating processing .
The design of pre-coating film laminating machine highlights the concept of "people-oriented", easy operation and debugging, the host uses frequency conversion speed regulation, and the performance is stable. Pneumatic pressing, easy operation, no adjustment, easy to use and maintain.
This laminating machine is mainly used for the automatic compounding of bidirectional stretched polypropylene (BOPP) pre-coated film on one side of the printed matter. The surface of the printed matter after compounding is bright, colorful, high strength, waterproof and moisture proof, so it can be widely used in textbooks, Cover decoration of books. It is most suitable for quick printing enterprises. This machine has high working pressure, fast heating, fast speed, low noise, and stable operation. It has changed the disadvantages of the traditional film laminating machine, such as snowflakes and fog spots, which are caused by the lamination of dark and spot color printed products, reducing the product's The loss rate improves the grade of the product, which greatly improves the work efficiency.

During the production and use of the domestic equipment automatic laminating machine, poor temperature control will cause the degradation and cross-linking of the high-molecular polymer in the hot-melt adhesive, making the laminating surface bad. Some pre-coated film colloids are easy to adhere to the surface of the substrate, resulting in poor winding; some thin surfaces of the adhesive layer are not activated, which is prone to defects such as insufficient adhesion to the printed matter; because the hot melt adhesive is made of a mixture of several materials , The transparency after coating is obviously worse than the low temperature pure resin pre-coating film.
The water content in the paper is too large, the paper shrinks after the film is dried, and the film is deformed and wrinkled;
Solution "The moisture content of the paper should be about 5% to keep the temperature and humidity in the working room normal.
The laminating machine's conduction roller is not running well or there are dirt on the surface, which prevents the film from stretching and running normally;
Solution: Conductor roller bearings should be lubricated on time and kept clean and free of foreign objects.