The pre-coating film laminating machine is a special equipment that combines printed materials with pre-coated plastics. Compared with the instant laminating machine, its biggest feature is that there is no sizing and drying parts. Therefore, this type of laminating machine has a compact structure, small size, low cost, easy operation, and good product quality stability.
The pre-coated film laminating machine consists of four main parts: pre-coated plastic film unwinding, automatic print input, hot-pressing zone compounding, and automatic rewinding, as well as mechanical transmission, pre-coated plastic film flattening, vertical and horizontal slitting, and computer control system And other auxiliary devices.
1. Print input section. The automatic conveying mechanism can ensure that the printed products do not overlap and enter the composite part at an equal distance during transmission. Generally, pneumatic or friction methods are used to achieve control. The conveying is accurate and high precision. The same requirements can also be met when the printed product with a small composite format.
2. Compound part. Including composite roller group and calender roller group (Figure 11-7). The composite roller set is composed of a heating pressure roller and a silicone pressure roller; the thermal pressure roller is a hollow roller with a heating device inside, the surface is forged with hard chromium, and is polished and finely ground; the temperature of the thermal pressure roller is tracked and sampled by the sensor and the computer Correct at any time; the adjustment of compound pressure adopts eccentric cam mechanism, and the pressure can be adjusted steplessly. The schematic diagram is as follows: the calender roller group is basically the same as the compound roller group, that is, it is composed of chrome-plated pressure roller and silicone pressure roller, but without heating device. The main function of the calender roller group is: after the pre-coated plastic film is combined with the printed matter by the composite roller group, the surface brightness is not high. After the secondary extrusion of the calender roller group, the surface brightness and adhesion strength are greatly improved.
3. Transmission system. The transmission system is driven by a computer-controlled high-power stepper motor. After one-stage gear reduction, it is driven by a three-stage chain to drive the movement of the paper feed mechanism and the rotation of the silicone pressure roller of the composite part and the calendering mechanism. The pressure roller group maintains a suitable working pressure under the action of steplessly adjusted pressure.
4. Computer control system. The computer control system uses a microprocessor, and the hardware configuration is composed of a motherboard, a digital key board, an optical isolation board, a power board, and a stepper motor power driver board.

The laminating machine refers to the transparent plastic film is pasted on the surface of the printed matter by hot pressing to form a 10-20um film, which protects the printed matter and increases the gloss of the printed matter. It is also known as laminating. The laminating process is widely used for surface binding and protection of book covers, picture albums, commemorative albums, postcards, product manuals, calendars and maps.
According to the different raw materials and equipment used, the film coating process can be divided into coating film process and pre-coating film process. Instant coating refers to the process of using plastic film as the raw material during the laminating operation, applying adhesive on it, drying it, and then hot-pressing the plastic film and the printed product. The pre-coating type refers to a process method in which a plastic film pre-coated with an adhesive and dried is used as a raw material, and is directly subjected to hot-press lamination with printed products.
The laminating process is mainly divided into semi-automatic laminating machine and fully automatic laminating machine. Although the specific operations of semi-automatic and full-automatic are somewhat different, the principle is the same: the adhesive is applied to the plastic film by a roller coating device, and the film is softened by the heat and pressure roller, and then the bottom is coated The printed material and the film are pressed together to form a paper-plastic integrated film product.

The laminating of the automatic laminating machine is to coat the plastic film with the adhesive, and to print it with paper as the substrate, using the rubber pre-coating laminating machine, the laminating is to coat the plastic film Agent, and it is combined with the printed matter using paper as the substrate, after being pressed by the rubber cylinder and the heating cylinder, to form a product of paper and plastic. The printed product after the film is coated with adhesive, because the surface has a thin and transparent plastic film, the surface is smoother and brighter, which not only improves the gloss and fastness of the printed product, but also extends the service life of the printed product. At the same time, the plastic The film also plays a protective role such as waterproof, anti-fouling, abrasion resistance, folding resistance, and chemical resistance.

The pre-coating film laminating machine is a laminating device with the least investment and the best effect. It is because the pre-coating film laminating machine adopts an environmentally friendly laminating process, and the operation is simple, the investment is small, and the use is convenient, whether it is batch Production, or a small amount of laminating, can be handy to use, the laminating machine widely used on the market now is a small laminating machine. Therefore, the market potential of the small laminating machine is huge, and the products that use the laminating machine for post-printing processing must have strong market competitiveness. We developed and sold a series of small laminating machines to bring the most affordable, direct and convenient service to our customers.
In this process, the laminating equipment does not require a binder heating and drying system, which greatly simplifies the laminating procedure, and the operation is very convenient. It can be turned on whenever it is used, and the production flexibility is large. At the same time, there is no solvent odor, no environmental pollution, and more importantly, it can be completely Avoid bubbles, delamination and other failures, the transparency of its finished products is extremely high, with broad application prospects and promotion value.
The pre-coated film structure is composed of a base material and an adhesive layer. The base material is usually PET and BOPP film. From the perspective of material cost and processing technology, most pre-coated film substrates use BOPP film with a thickness of 12-20 microns. The adhesive layer The thickness is 5-15 microns. According to different processing equipment and process conditions, different thicknesses of adhesive layer are selected. The adhesive layer is divided into hot melt adhesive and organic polymer low temperature resin. The difference between the two is that hot-melt adhesives are made by blending and modifying several materials such as main tackifier resin, tackifier and modifier, while the organic polymer resin is a single polymer low-temperature copolymer.

Material and material of the pre-coating film laminator: The pre-coating film structure is composed of a base material and an adhesive layer. The base material is usually PET and BOPP film. From the perspective of material cost and processing technology, most pre-coating film substrates use BOPP The thickness of the film is 12-20 microns, and the thickness of the adhesive layer is 5-15 microns. According to different processing equipment and process conditions, different thicknesses of adhesive layer are selected. The adhesive layer is divided into hot melt adhesive and organic polymer low temperature resin. The difference between the two is that hot-melt adhesives are made by blending and modifying several materials such as main tackifier resin, tackifier and modifier, while the organic polymer resin is a single polymer low-temperature copolymer.
The prospect of pre-coating film laminating machine: this process does not require adhesive heating and drying system, which greatly simplifies the filming process, and the operation is very convenient. It can be turned on at any time, and the production flexibility is large, and there is no solvent odor. There is no environmental pollution, and more importantly, it can completely avoid bubbles, delamination and other failures. Its finished products have extremely high transparency and have broad application prospects and promotion value.