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.

Structure and configuration of hot laminating machine:
1. Manual paper feed.
2. The baffle of the paper feeding table can be adjusted according to the paper width.
3. The photoelectric paper stacking positioner can automatically control the length of the paper between the paper (optional).
4. Heating method: electric heating tube, the temperature can be adjusted according to the requirements of the laminating film.
5. Pressurization method: Air pressure method can avoid site pollution caused by traditional hydraulic method. In addition, the pressure can be adjusted according to the requirements of the lamination.
6. Punching hob can roll out a row of small holes on the edge of the film to achieve automatic slitting smoothly.
7. Anti-curve device: The paper after lamination is shaped by the anti-curve device. After slitting, the paper is no longer curled.
8. The film slitter can cut wide and long film rolls (relative to paper specifications). After cutting, the excess film remains on the film release shaft.
Saving film when operating the laminating machine can greatly save costs. This is also the most basic operating specification of the laminating machine. Here are some suggestions on how to save film:
When laminating, attention should be paid to the texture direction of the film, especially the thick film, to reduce the phenomenon that the film is curled due to rolling and stretching.
Laminating machine should pay attention to control the speed, control the speed according to the actual experience and material changes, try to maintain a uniform speed.

Floor-mounted laminating machines are generally widely used in printing plants, large graphic companies, and photo studios. The advantage is that the output is large; the disadvantage is that the modeling takes up a lot of space and the cost is high. For example, the wide-format professional-grade full-function laminating machine has a synchronous reel design with automatic drawing and backing paper, and can independently adjust the pulling force and drawing speed of the film, which can be adapted to high-volume and high-load work.
Desktop laminating machine has the advantages of small size, relatively cheap price and moderate speed; the disadvantage is that the output is not as high as the floor-standing large laminating machine, so it is suitable for use in print shops, small printing plants, photo studios, and printing shops, such as small The multifunctional graphic laminating machine can be used to process small batches of personalized laminating processing of documents, recipes, business cards, cards, covers, picture books, drawings, etc.

Only under the pressure, the hot-melt adhesive in the viscous state of the rotary film laminator will fully wet the paper print surface in the process of driving the air away from the print surface. Diffusion and dislocation of colloid molecules to the ink layer of paper prints and paper molecules, and achieve good adhesion, forming a complete envelope on the entire surface of the printed matter, so that the printed matter is bright, no fog, leveling of the glue layer, no creases , The bonding effect is good, in the case of no wrinkle, the pressure is appropriately increased, so that the thermoplastic curing performance of the hot melt adhesive can be fully expressed.
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.