Selection requirements for laminating materials of automatic laminating machine:
The plastic films commonly used in the current laminating process of automatic laminating machines are: polyvinyl chloride (PVC), polypropylene (BOPP) and polyester (PET) films. Among them, BOPP film (15～20pm) is flexible, non-toxic, high in transparency, and cheap in price. It is an ideal composite material in the laminating process of the automatic laminator.
In order to meet the requirements for the use of laminating printed matter of the automatic laminating machine, the plastic film should meet the following requirements:
(1) Thickness directly affects the light transmittance, refractive index, film fastness and mechanical strength of the film, and the appropriate film should be selected according to the performance of the film itself and the purpose of use;
(2) After being treated by corona or other methods, it has better wetting performance and adhesion performance;
(3) The higher the transparency of the film, the better, so as to ensure the best clarity of the printed matter covered;
(4) The film should have good light resistance, not easy to change color under long-term light exposure, and have certain mechanical strength and flexibility characteristics;
(5) The appearance of the film surface should be smooth, free of irregularities and wrinkles, no defects such as bubbles, shrinkage holes, pinholes and pits, and no contamination of the film surface with dust, impurities and grease.

In the process of using the automatic laminating machine, there will be some small problems. These problems may be caused by our inadvertent use during the ordinary use process. There are also some reasons because of the length of time that a full-automatic laminating machine is used. As a result, the automatic laminating machine manufacturers conducted an investigation on this, and found that the common problems when using the automatic laminating machine are nothing more than three types: electrical circuit, rubber circuit, and gas circuit.
1. Circuit problem, if it is rubber birch or automatic laminating machine, the hose is not heated. Let's first check whether the fuse is burned out, whether there is any problem with the fusion, and check the temperature controller and the solid state relay or IC. If there is no problem with the above, then there is a problem with the circuit. You should check the circuit.
2. The problem of the plastic line. When the temperature of the hose glue gun is normal, it is the glue road problem that the glue does not come out. First check which part does not come out. The glue is the problem of the glue gun. The glue gun should be cleaned. If there is no glue out of the hose, there may be a problem with the host. There are three reasons why the host does not give out glue. One is that the inverter is broken (sent for inspection or replacement); the other is that the motor has problems (same as handling the inverter); There is a problem with the pump (check whether the seal or the pump is broken).
3. The problem of the air circuit, in the process of using the automatic laminating machine, the solenoid valve is generally used for control. This causes a problem in the gas circuit. If there is a problem in the gas circuit, first check whether the gas is reversed or whether the solenoid valve is It is broken, or the wrong type of solenoid valve is used.

The effect of automatic laminating machine process:
1. Overlay the protective film on the picture to improve the strength of the picture and the wear resistance of the surface.
2. Isolate the picture from the outside air to prevent deformation and cracking caused by corrosion, humidity, and drying of corrosive gases in the atmosphere, fading and discoloration caused by rain erosion and ultraviolet radiation, and keep the bright color of the picture screen enduring, Extend the life of picture display.
3. Paste the picture on the display board or fabric to make a hanging advertising picture.
4. Press a special mask or sheet on the picture to form a picture with special artistic effects such as bright light, matt, oil painting, virtual and three-dimensional.
Classification of laminating methods of automatic laminating machine:
The coating process completed with various materials and equipment is divided into several categories according to the temperature and use of the raw materials (consumables) used. The following categories are introduced.
Cold mounting: The method of mounting the protective film on the surface of the picture by cold pressing at normal temperature is called cold mounting. There are single-sided mounting and double-sided mounting. In the operation method, there are also manual peeling and self-releasing membrane mounting. The cold mounting process has the characteristics of simple operation, good effect and low cost. At present, it is widely used in the post-production of advertising light boxes, engineering drawings and wedding photography.
Automatic laminating machine hot mounting: the mounting method of the dedicated hot film on equipment heated to a certain temperature (about 100-180 °C) is called hot mounting, which can be divided into single-sided hot mounting and double-sided hot mounting. It has good light permeability and water resistance, good heat resistance and strong hardness. It is suitable for post-production of advertising pictures based on lights or other occasions. However, hot laminating equipment and consumables are more expensive, complicated to operate, consume more energy, and cost more.
Similar to hot mounting, but generally miniaturized. At present, the largest specification plastic packaging equipment on the market is 24 inches, which is packaged by special plastic film heating. It is mainly used for packaging of documents, small-size pictures or documents.
Automatic laminating machine vacuum laminating. It is to use a special vacuum laminating machine to evacuate the film and the painting and set it at a certain temperature to complete the laminating. The operation method is complicated, the cost is high and the picture size is limited, but the mounting quality is very high and the picture texture is strong, which is suitable for photos.

Fully automatic laminating machine vacuum laminating is to use a special vacuum laminating machine to evacuate the film and the painting and set it at a certain temperature to complete the laminating. The operation method is complicated, the cost is high and the picture size is limited, but the mounting quality is very high and the picture texture is strong, which is suitable for photos.
Trouble shooting one of the automatic laminating machine: the machine does not start
The input wire is disconnected, the power cord is reversed, and the voltage is insufficient.
Trouble shooting of automatic laminating machine 2: temperature measurement is not accurate
Thermocouple, temperature controller. Whether the installation is incorrect and damaged.
Trouble shooting three for automatic laminating machine: working vacuum cannot come up
The air path is blocked, the hand valve or solenoid valve is not closed, the vacuum pump motor belt is loose, and the vacuum gauge is damaged.
Trouble shooting of automatic laminating machine 4. The main power switch trips
The leakage of the input wires on the top of the heating box, the leakage of the distribution box, the external wires are laid on the equipment, and the leakage of the motor.
Troubleshooting 5 of automatic laminating machine: the film is not in place
The vacuum is not enough, air leakage, temperature is not enough, the film is too thin, the workpiece is pasted with other materials, the depth of the workpiece exceeds the pull-up of the film, the suction time is too short, the film is not lifted, and the workpiece is too close.
Troubleshooting 6 of automatic laminating machine: the surface of the coated workpiece is folded and not smooth or the corners cannot be wrapped
The film is not straightened, the film quality is not good, the workpiece is not polished well, too much glue is sprayed, and the mold below the workpiece is too low.
Trouble shooting 7 of automatic laminating machine: the film is pulled down when the suction is not reached
Whether the solenoid valve or hand valve is open.
Trouble shooting for automatic laminating machine 8: break phenomenon
The temperature is too high, the heating time is too long, the film quality is not good, and there is no heating.

The laminating process of the automatic laminating machine refers to the whole process of laminating pictures and photos, including film selection, film making, and cutting. Mainly used for the post-production of advertising pictures, artistic photos and wedding photos. The film-covered pictures are highly anti-corrosive, waterproof, dust-proof, wrinkle-resistant and anti-ultraviolet erosion, which can produce a strong three-dimensional sense and artistic appeal. So what should we do before the laminating process of the automatic laminator?
Inspection work before the automatic laminating machine starts:
1. Detection before starting the automatic laminator ⑴ Confirm whether the machine is in a safe state.
2. Film transport adjustment to make the film tension even to adapt to the film transport tension.
3. Check whether the gap between the glue roller and the glue is parallel.
4. Check the temperature of the heating roller to avoid inaccurate thermometer.
5. The pressure that the pressure gauge must reach, otherwise the pressure will affect the product.
6. Clean the sundries on the rubber roller, so as not to cause waste in the finished product.
After the automatic laminating machine completes the preparation work, close the main power switch, turn on the heating cylinder and the motor, then turn on the oil pump, adjust the flow of the laminating glue, and adjust the parallelism between the rollers. Adjust the measuring position of the paper on the feeding table, apply the film-coated glue, and turn on the drying tunnel for heating. After testing several sheets of film, adjust the heating temperature, pressure and air intake of the heating roller again until the effect is good, and then start normal work.