The laminating machine uses a hot laminating process, which should be used in conjunction with the hot laminating film. After laminating, the paper and the film are combined into one. The laminating machine uses varnish. A film coating machine refers to a machine that applies a solid continuous film formed by applying one or more coatings on a substrate.
        Lamination: also known as "over-plastic", "laminating", "sticking film", etc., refers to the transparent plastic film is applied to the surface of the printed matter by hot pressing, which protects and increases the gloss. Lamination has been widely used in book covers, picture albums, commemorative albums, postcards, product manuals, calendars and maps for surface binding and protection. At present, the common film packaging products are carton, carton, tote bag, fertilizer bag, seed bag, sticker, etc.
        Coating film: also known as paint film. A solid continuous film formed by one or more coats of paint applied to a substrate. Generally, the coating film is composed of multiple coatings, and the amount of coating is determined according to the requirements of the object to be coated. Generally includes a primer layer, intermediate coating and topcoat layer. The coating film reflects the effect of supporting use of the paint.
        Laminating film: Weaving warp cloth made of polypropylene or low-pressure polyethylene, treated with a special process, and then covering the surface with a layer of high-pressure polyethylene electrostatic film with a thickness of only 0.04 cm, it becomes a laminating film. Its thickness is only 0.2 ~ 0.24 cm, the weight per square meter is only 160 grams, less than 1/10 of the weight of the general cotton yarn sail tarpaulin, but its vertical and horizontal tensile strength can reach up to 120 kg, and the temperature resistance capacity is from 70 ℃ to minus 40 ℃, and tasteless, non-toxic, wear-resistant and rub-resistant, can be used for a long time in various ecological or physical and chemical environments such as infrared, ultraviolet, laser, wind, frost, rain, snow, acid and alkali.

         When plastic products make people's lives more convenient, it means that we can't have good products without plastics, but in recent years, the toxicity of plastic products is controversial, but if we replace plastic materials, I believe that in the future Year is a very arduous task to improve plastic products. Insufficient quantity of plastic products, scientific use is king.
        Laminating machine equipment: roller coating glue after drying, using special equipment pressure and printing of composite material parts. That is, the laminating machine has both automatic and semi-automatic machines. In different types of structure models, the coating technology has its own uniqueness, but their basic structure and working principle are the same, mainly by tape, glue coating, drying, composite materials, winding five parts and mechanical transmission, automatic tension Control, automatic deviation correction and other unwinding devices.
        There are 5 advantages of the laminating machine to replace the traditional film. It is an inevitable trend for the laminating film to replace the laminating film.
         1. The traditional film-covering door is cheap, each machine has only one thousand or two thousand yuan, but the cost is too high. The membrane liquid of the laminating machine is only 0.3-0.4 yuan per square meter. 10 times the cost savings. The one-year price difference of the laminating machine will save the long-term use of coating and laminating equipment.
        2. The laminating machine has low laminating efficiency and slow speed. The coating machine is 300 square meters per hour.
        3. Good quality. The plastic film cover layer can separate the layers. The laminator does not.
        4. High hardness, wear resistance, oxidation resistance and yellowing resistance. Take photos as an example. The lamination machine will produce a lot of scratches from the short flow distance from production to the customer's hands after lamination. There is a chance of coating, and it can be stored for a long time without discoloration.
        5. Easy to use. It is a laminating machine with a small footprint. The civil 220V power supply is connected with a built-in small pump, which can automatically circulate. Here are photos, business cards, menus and some printed advertising products. At the exit is a perfect product.

        The state has issued a series of policies to rectify the heavily polluted printing industry, paper industry and other fields, causing many factories to close and close, resulting in increased costs, reduced competition pressure, and the application of negative pressure laminators has also begun to become widespread.
        What is a negative pressure laminator? It is to apply a plastic film with an adhesive, and then combine it with the printed matter using paper as a substrate, pressurized by a rubber roller and a heated roller, and form a paper-plastic integration product. The products made in this way not only improve the gloss and fastness of the printed matter, and prolong the service life of the printed matter, but at the same time, the plastic film also plays a protective role in waterproof, anti-fouling, abrasion resistance, and chemical resistance.
        What are its mechanical functions?
        1. Equipped with a non-stop paper feeding device to ensure continuous production;
        2. The use of large-diameter pressing rollers effectively improves the production speed and ensures that the composite products are flat and bright;
        3. A powder removal mechanism combining powder sweeping and powder pressing is adopted to ensure the powder removal effect;
        4. The advanced drying tunnel structure ensures that the glue on the film can be dried quickly;
        5. Adjustable speed disc-type rotary cutter to ensure the slitting of paper;
        6. The motor adopts frequency conversion control, safe and reliable.
        The above is my brief introduction to the mechanical function of the negative pressure laminator.

        The amount of film used in the vacuum laminating machine is mainly related to the operation level. It is recommended to:
        1. The product to be constructed must be straight. Handle uneven paper with "ruffled edge" and "tight edge" phenomena. Paper with "lotus edge" can be baked, and paper with "tight edge" can be hung to dry.
        2. Be sure to wait for the blot to dry before coating, otherwise it will cause blistering or hair pulling.
        3. Spray as little powder as possible during printing, otherwise it will cause emptying and bubbling at the powder pile. Before spraying the film, the powder should be disposed of. If the number of prints is large, the powder can be hung to dry, and if the number of prints is small, the powder can be manually wiped.
        4. When laminating, attention should also be paid to the direction of the paper strands, especially thick paper, to reduce the phenomenon that the paper is curled due to rolling and stretching.
        There is also: the temperature is generally controlled to 40 ~ 60 ℃. Too high a temperature will deform the paper and film, causing the product to curl, but not too low, otherwise it will cause insufficient viscosity. The temperature of coated paper should be slightly lower than that of offset paper.

        In the plane coordinate system (the vertical coordinate is the Y axis, and the horizontal coordinate is the axis), any point can be represented by its coordinate, otherwise, the coordinate of any point can also be expressed in the plane coordinate system .
        The pull gauge is to solve the size of the Y axis direction
        The front rule is to solve the size of the X axis direction
        1. Common pull gauge
        1. Two tangential rollers (usually up and down positions) are positioned by turning to pull the paper to a fixed position. Among them, the lower roller makes 360-degree rotation, and the upper roller is passive follow-up. Under normal circumstances, the lower roller must be quenched, and the upper roller uses a rolling bearing with a dust cover, because the paper is more or less dust and paper wool, if these dust or paper wool enter the bearing, it will inevitably affect the flexibility of the bearing , It will affect the normal work of the pull gauge.
        2. One roller (bearing) and one pull bar.
        The scroll wheel moves up and down, controlled by a cam, which can adjust the up and down time. The rack is also controlled by a cam, which can adjust the back and forth time. (The rack must be quenched)
        3. One roller (bearing) and one sector plate.
        The paper roller is moved up and down, and the fan-shaped plate swings back and forth. The drawing rule of our current local machine is in the form of two rollers, and the drawing rule of the laminating machine belongs to the third form.
        Second, the characteristics of the two forms of regulation
        1. Two rollers: the lower roller makes a rotating motion, and when the upper roller is pressed down, it starts to pull the paper, otherwise, when the upper roller is lifted, the paper passes. This form is relatively simple, only one cam control is required in the structure, and the adjustment is relatively simple.
        2. The drawing gauge used by the laminating machine is a little more complicated. The upper paper-drawing roller (bearing) is controlled by a cam, and the bottom is the knurling roller, which is controlled by the other end-face cam. It is worth noting that the up and down time of the laminating machine cannot be adjusted and can only be coordinated by the lower roller and cam. In addition, the rollers below must have a high hardness, and they must be concentric, and there should be no jumping phenomenon. In addition, the pulling force of the paper is always greater than the 'supporting force' of the paper. So how to adjust the size of the pulling force to make it just right? First, rely on experience, explore carefully, and keep summing up. Second, it is guaranteed by design. Because the laminating machine does not have high requirements for drawing gauges, and it is mainly based on thick paper. Our debuggers and installers must carefully study the working principle and structure of the pull gauge to be able to cope with the various problems that actually arise.
        3. The Front Regulation Department
        1. The function of the front gauge cover is to ensure the accuracy of the X axis direction.
        For the laminating machine, adjusting the front rules is an important part to ensure the correct buckle. The laminating machine has 6 front rules. These 6 front rules should be adjusted to the same plane, and the height is basically the same (relative to the panel). The rise and fall of the pre-regulation should be active, but no looseness is allowed. The four sides of the front gauge should be smooth and wear-resistant, and the oil passage should be smooth.
        2. The main function of the front gauge wheel is to send out the paper that has been positioned. The two front gauge wheels must be able to turn flexibly, but they cannot be shaken from side to side. The two left and right front gauge wheels should be adjusted to the "light and heavy" consistency, and fine-tuning should be repeated during the adjustment to make it consistent, so as to ensure that the "buckle" is basically consistent.
        4. The relationship between the pull rule, the front rule and the paper feed wheel
        After we have basically understood the role of the pull rule, the front rule and the paper feed wheel, let's discuss the relationship between the three. (In this respect, the principle of the laminating machine and the local machine are similar, the same is the same)
        First of all, we need to adjust the pull gauge sleeve. When the lower knurling wheel just turned towards the "knock body", the upper pressing wheel (bearing) just pressed down on the lower knurling wheel, and a certain pressure was generated between the two, which also led The upper pressing wheel rotates (counter-rotating), at this time the paper should be between the upper and lower pressing wheels, and be pulled towards the "backer body". This is the paper pulling action.
         I think we must first find a basic point, that is, the end of the pull gauge action, the pull gauge paper pulling cam (upper pressure wheel) has just been raised, and the distance between the upper and lower wheels is a piece of paper. Use this as a reference to adjust the front gauge and feed roller. When the top of the front gauge is lowered to a position above the panel by one sheet of paper, the gap between the paper feed roller and the paper feed roller below should also be the thickness of a sheet of paper. At the same time, observe whether there is a phenomenon of "bowing up" when the paper is fed in the front regulation during paper feeding, and whether the paper feed is smooth, and then make micro adjustments.
        5. How to ensure that each piece of paper can be pulled to the designated position:
        As mentioned earlier, the pulling force of the pull gauge should be greater than the supporting force of the paper, and the pressure of its compression spring must be adjusted patiently. When the paper is pulled to the designated position, that is, against the "mountain", the paper roller should stop rotating, commonly known as "slip", and the pull gauge has a knurled screw for adjusting the compression spring. Turn the screw to adjust the pressure of the compression spring, so that the contact between the upper and lower rollers generates pressure (overpressure), which is the pulling force of the paper. (The upper pressure wheel should be able to rotate very flexibly without any damping phenomenon.)
        In physics, the magnitude of the frictional force (tensile force of the pull gauge) is equal to the positive pressure × friction coefficient. The outer knurling of the lower roller is to increase the friction coefficient. When the pull gauge is pulling the paper, if you feel the phenomenon of ‘pulling over the head’, you can adjust the knurled screw on the back to reduce the positive pressure. (The front knurled screw is not used to adjust the pulling force of the paper pulling cam.) When we observe the pull of the pull gauge, the gap between the pressure plate and the lower plate should be 3 times that of the paper to be coated. If there is no paperboard on it, it will be too far when pulling the paper. When changing from thin paper to thick paper, adjust the gap between the two boards: turn the knurled screw on the front to adjust the upper board to be raised or lowered. At this time, as the upper pressure wheel is raised (increased clearance) with the upper pressure plate, the gap between the upper pressure wheel and the lower roller is also increased, and the pressure between them is also reduced. It is necessary to adjust the eccentric shaft at the upper pressure wheel to ensure sufficient positive pressure. At the same time, it is necessary to adjust the length of the knurled screw behind the compression spring.