Laminating process is a surface processing process after printing, and it is also called post-printing plastic,

Post-print lamination or post-print lamination refers to a process technology that uses a laminating machine to cover a layer of 0.012～0.020mm thick transparent plastic film on the surface of the printed product to form a paper-plastic product. The laminating machine is the equipment used to complete the laminating process. Generally speaking, it can be divided into two types: coating film and pre-coating film according to the process used. According to the different film materials, it can be divided into two types: bright film and matte film. The main problems that affect the laminating process: affecting the health of the operators, there is a fire hazard; the paper and film materials after the laminating are difficult to recycle, and resources are wasted.

The laminator laminating process refers to the whole process of laminating pictures and photos, including film selection, laminating making, and cutting. Mainly used in the post-production of advertising pictures and wedding photos. The covered pictures have high anti-corrosion, waterproof, dustproof, anti-wrinkle and anti-ultraviolet properties, which can produce a strong three-dimensional feeling and artistic appeal. The cold laminator is the main equipment to complete the film, and it is also an indispensable supporting equipment for computer inkjet printers and electrostatic printers. At present, there are four types of equipment commonly used for laminating: manual cold laminator, electric cold laminator, self-removing film cold laminator and automatic cold and hot laminator, as well as transfer equipment.

The effect of laminating machine laminating process

1. Cover the picture with a protective film to improve the strength of the picture and the wear resistance of the surface.

2. Isolate the picture from the outside air to prevent corrosion, humidity, and dryness caused by corrosive gases in the atmosphere

Discoloration and discoloration caused by rain erosion and ultraviolet radiation can maintain the bright color of the picture for a long time and extend the life of the picture display.

3. Paste the picture on the display board or cloth surface to make a hangable advertising screen.

4. Laminate a special mask or sheet on the picture to form a picture with special artistic effects such as bright, matt, oil painting, virtual, and three-dimensional.

Classification of laminating methods

The laminating process completed by various materials and equipment is divided into several categories according to the temperature and purpose of the raw materials (consumables) used, and the following categories are introduced.

Cold laminating: The method of laminating the protective film on the surface of the picture by cold pressing at room temperature is called cold laminating.

Among them, there are single-sided mounting and double-sided mounting. In the operation method, there are also manual peeling and self-removing film mounting. The cold lamination 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.

Laminating machine hot mounting

That is to say, the mounting method of the dedicated thermal film on the equipment heated to a certain temperature (about 100-180°C) is called thermal mounting, which can be divided into single-sided thermal mounting and double-sided thermal mounting, because of its light permeability and water resistance. Good, good heat resistance, strong hardness, suitable for post-production of advertising pictures relying on lighting or other occasions. However, heat lamination equipment and consumables are more expensive, complicated to operate, high energy consumption, and high cost.

Similar to thermal 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, which is mainly used for packaging documents, small-size pictures or documents.

Vacuum laminating machine

It uses a special vacuum laminating machine to vacuum between the film and the painting and then shape it at a certain temperature to complete the film. The operation method is complicated, the cost is high, and the picture size is limited, but the mounting quality is high, and the picture texture is strong, which is suitable for photos. Troubleshooting 1. The machine does not start: the input wire is blocked, the power wire is connected reversely, and the voltage is not enough. 2. Inaccurate temperature measurement: thermocouple, temperature controller. Whether it is installed incorrectly or damaged. Iron plate laminating machine 3. The working vacuum cannot be increased: the air circuit is blocked, the hand valve or solenoid valve is not closed, the vacuum pump motor belt is loose, and the vacuum gauge is damaged. 4. The main power switch trips: the input wire on the top of the heating box is leaking, the distribution box is leaking, the external wire is tied to the equipment, and the motor is leaking. 5. Insufficient suction film: insufficient vacuum, air leakage, insufficient temperature, film too thin, workpiece pasted with other materials, the concave depth of the workpiece exceeds the pulling up of the film, the suction time is too short, the film is not pulled up, and the distance between the workpieces Too close. 6. The surface of the overlaid workpiece is folded and not smooth or the corners are not wrapped: the film is not straightened, the film quality is not good, the workpiece is not polished, too much glue is sprayed, and the template under the workpiece is too low. 7. When the film is not sucked and covered, the film will pull up downwards: Whether the solenoid valve or hand valve is open 8. The phenomenon of drama breaking: the temperature is too high, the heating time is too long, the film quality is not good, and there is no heating.