The laminating machine is divided into hot laminating film machine and cold laminating film machine, so what skills are there in the process of using the cold laminating film machine? Today, the laminating machine manufacturers will analyze the situation with our customers in detail!
        1. The product to be coated must be kept 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 ink to dry before coating, otherwise it will cause blistering or fluffing.
        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 treated. If the number of prints is large, the powder can be hung and hung to remove the powder. If the number of prints is small, the manual stamping machine can be wiped manually.
        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.

        Analysis of coating and calendering process of glazing machine The glazing process of glazing machine is to coat (or spray, print) a layer of uncoated transparent coating on the surface of the printed matter, after leveling, drying and calendering After that, the technology and method of forming a thin and uniform transparent bright layer on the surface of the printed matter. Correctly understand the importance of glazing equipment structure. The wind blown into the film by the blower of the film laminator blows toward the film and then is discharged from the air outlet. The film laminator divides the drying into a dehumidification zone and a drying zone to improve the drying power level and reduce energy consumption.
        Printing glazing machine glazing is more expensive than laminating machine cladding. The process is simple, in addition to the full version of the glazing, but also requires partial glazing. Composition of UV varnish varnish: Oligomer Oligomer is the most common constituent substance in uv varnish and belongs to a type of film-forming substance. Its performance plays an important role in the curing process and the properties of the cured film. The laminating machine includes a frame and a heating roller, and the film is wound on the heating roller. The portion of the heating roller covered with the film is divided into a dehumidification area and a drying area in sequence, and the drying area is connected to the heat recovery and reuse chamber through.
        The laminating machine includes three parts: gluing, drying and hot pressing. It has a wide range of special applications and stable and reliable processing performance. It is currently widely used in China. The laminating machine has no gluing and drying parts, small size, low cost, flexible and convenient operation, not only the laminating processing of general large-scale printed products, but also the laminating processing of small batches and scattered printed products such as general automated desktop office systems, etc. Very promising.
        The highlights of the laminating machine, namely the coating film:
        (1) The phenomenon of blistering and film stripping is prone to occur. The blistering and film stripping phenomenon is particularly serious in a large-area on-site printing or in a workplace with high humidity.
        ⑵ Occasionally, the surface of the product has different gloss characteristics or fog spots.
        ⑶ The product is prone to curling phenomenon. If the pressure is too large when applying glue or the temperature is too high during drying, this kind of curling phenomenon is more serious.
        ⑷The organic solvent and other chemical substances will be volatilized into the atmosphere when the film is coated by the laminating machine, causing environmental pollution and even causing a fire.
        Seriously affected the R & D and production power level. The new automatic slitting machine is a mechanical device that slits wide-width paper or film into multiple narrow-width materials, and is often used in printing and packaging machinery. The traditional control scheme of the slitter is to use a large motor to drive the rewinding and unwinding shaft. A magnetic powder clutch is added to the rewinding and unwinding shaft, and the resistance generated by the magnetic powder clutch current is controlled to control the surface of the material. tension. The dehumidifying area of ​​the laminating machine includes a blower, an exhaust fan and a dehumidifying chamber. The dehumidifying chamber of the laminating machine is provided with an air inlet, a blower outlet and an air outlet for air circulation in the dehumidifier chamber, the blower opening facing the film.
        The key to the adjustment of the magnetic powder clutch of the new automatic cutting machine The main highlight of the new automatic cutting machine is that the magnetic powder clutch acts as the same resistance device and outputs the same DC voltage through the system control to control the resistance of the magnetic powder clutch. The new automatic cutting machine can be used for stepless speed regulation from zero to synchronous speed, and is specially used for high-speed segment fine-tuning and medium and small efficiency speed regulation systems. The air inlet of the film laminator is connected to the blower, and the exhaust fan is connected to the air outlet. During the drying condition, the film first enters the dehumidification area and then enters the drying area.

        In printing and other industries, some text files that are easy to fold, wear, or get wet are attached with a layer of plastic film after printing. The file processed in this way is not only waterproof, antifouling, abrasion resistant, folding resistant, and chemical resistant, but also looks more beautiful. The laminating machine is a machine that applies adhesive to the plastic film and presses the paper document together. It is widely used; however, the laminating machine has very high requirements for the accuracy of its internal parts. In daily operation, people may be negligent in maintenance and damage a certain mechanical part, resulting in blurred text. Smooth, there are problems such as scratches. Today, our editor will give you a brief introduction to the maintenance knowledge and precautions of the laminator!
        1. Maintenance of laminating machine
        (1) The rubber roller should be checked frequently for dust, rubber skin and oil dirt on the surface. If there is any, it should be cleaned in time to make the surface bright and clean.
        (2) After each use of the machine, it should be cleaned in time.
        (3) During the operation of the machine, if there is any abnormality, it should be stopped immediately to check, and then find the cause and eliminate it.
        (4) Check the oil pipes, valves, cylinder plugs, etc. of the hydraulic system to see if they are normal and there is no oil leakage. If any, check immediately and replace the sealing ring.
        (5) The hydraulic oil should be checked, whether the oil quality is good, and whether the oil quantity is sufficient, and the oil quantity is insufficient should be replenished in time.
        (6) Each transmission part and lubricating surface should be lubricated regularly, so that the machine can have a good lubrication state.
        (7) The insulation performance of the machine should be good, and the grounding should be firm and reliable.
        2. Precautions for laminating machine
        (1) There should be no flammable or explosive products around the machine, and it is strictly forbidden to put your hand into the danger zone when the machine is running.
        (2) When the machine is scrubbing, it should be turned on at a low speed.
        (3) When overhauling the machine, the main power of the machine should be turned off first.
        (4) It is strictly prohibited to put any objects, tools, etc. on the machine, so as not to affect the normal operation of the machine.

        As the saying goes: People rely on clothing, Buddha relies on gold. Of course, beautiful things must be decorated with beautiful appearance. For example, famous cigarettes and fine wines have gorgeous outer packaging, and the peritoneal technology is becoming more and more mature, and the peritoneal equipment is more and more advanced. Laminating equipment is divided into two categories: instant coating laminating machine and pre-coating laminating machine.
        Pre-coated laminating machine without gluing and drying parts, small size, low cost, flexible and convenient operation, not only suitable for laminating processing of large quantities of printed products, but also suitable for laminating processing of small batches and scattered printing products such as automated desktop office systems. At present, advanced pre-coating laminators with computer control have been produced in China. Instant coating laminating machine has wide application range, stable and reliable processing performance, and is a widely used laminating equipment.
        1. Pre-coating film equipment
        The pre-coating laminating machine is a special equipment that combines printed materials with pre-coated plastics. Compared with the instant coating laminator, the biggest feature is that there is no sizing and drying parts, so this type of laminator is compact in structure, small in size, low in cost, easy to operate, and has good product quality stability.
        The pre-coating laminating machine consists of four main parts: pre-coating plastic film unwinding, automatic input of printed matter, hot-press area compounding, and automatic rewinding, as well as mechanical transmission, pre-coating plastic film flattening, vertical and horizontal slitting, and computer control system And other auxiliary devices.
        1. Print input part. 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 printed products with small composite width.
        2. Compound part. Including composite roller group and calender roller group. 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 by the sensor and sampled by the computer Correct at any time;
        The compound pressure is adjusted by an eccentric cam mechanism. The pressure can be adjusted steplessly. The schematic diagram is as follows: the calender roller group is basically the same as the composite roller group, that is, it is composed of a chrome-plated pressure roller and a silicone pressure roller, but there is no heating device. The main function of the calender roller group is: after the pre-coated plastic film and the printed matter are compounded 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 set 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 main board, a digital key board, an optical isolation board, a power board, and a stepper motor power drive board.
        2. Coating equipment
        Instant coating film laminating machine is a special equipment that applies the adhesive to the reel plastic film after drying it, and then presses the composite part together with the printed matter. That is, Xu-type laminating machine has two kinds of automatic machine and semi-automatic machine. Each type of machine has its unique features in structure and lamination process, but its basic structure and working principle are the same. It is mainly composed of five parts: unwinding, sizing, drying, compounding, rewinding, and mechanical transmission. , Automatic control of tension, automatic deviation adjustment of unwinding and other auxiliary devices.
        1. Unwind part. The unwinding of plastic film requires that the film always maintain a constant tension. If the tension is too large, it is easy to produce longitudinal wrinkles, otherwise it is easy to produce horizontal wrinkles, which are not conducive to the coating of adhesives and the compound with the printed matter. In order to maintain the proper tension, the unwinding part is generally equipped with a tension control device. Common ones include mechanical friction disc clutches, short-circuit AC motors, and magnetic powder clutches.
        2. Coated parts. After unwinding, the film passes through the coating roller and enters the gluing part. The coating forms are: roller reversal type, concave type, direct glue without scraper and direct glue with scraper, etc.
        A. Roller reversal glue application. It is an indirect glue coating, which is the most widely used by various models. The glue supply roller brings out glue from the glue storage tank, and the glue scraping roller and the glue plate can scrape the excess glue back to the glue storage tank. The film counter-pressure roller presses the film to be applied to the surface of the glue roller after the glue is homogenized, and maintains a certain contact area, and the glue solution is continuously applied to the film surface under the action of pressure and adhesion. The amount of glue can be changed by adjusting the distance between the rubber roller and the rubber roller, and the rubber roller and the rubber sheet.
        B. Concave glue application. It is composed of a metal rubber roller with a surface engraved on the surface and a group of film partition rollers. The gumming roller is directly immersed in the glue liquid, and the glue liquid is taken out from the glue storage tank with the rotation of the roller, and the excess glue liquid on the surface of the roller is scraped off by a scraper. Under the action of the film pressing roller, the glue in the groove of the roller is driven by the film to be coated which is directionally moved and is evenly spread on the film surface. The amount of glue can be controlled by adjusting the grid pattern on the surface of the coating roller shaft, the characteristic value of the adhesive, and the pressure value of the laminating roller.
        The advantage of concave coating is that the amount of coating can be controlled more accurately and the coating is uniform; however, the anilox roller is difficult to process and easily damaged, and needs to be cleaned frequently. In addition, the coating requires higher adhesives.
        C. No-squeegee roller extrusion coating. The glue roller is directly immersed in the glue liquid. During the coating, the glue roller brings out the glue liquid and passes through the glue roller. After the glue is evenly glued, the glue is applied by the pressing force between the film pressing roller and the glue roller.
        During extrusion, the pressure, adhesive performance index and coating speed determine the thickness of the adhesive layer. The amount of glue applied is achieved by adjusting the squeezing force between the glue roller and the glue roller, the glue roller and the laminating roller. Therefore, there are high requirements on the surface accuracy, cylindricity and radial runout tolerance of each roller.
        D. Squeegee directly apply glue. The glue roller is directly immersed in the glue solution and continuously rotates to drive the glue solution from the glue tank. After removing the excess glue solution by the scraper, it comes into contact with the film surface to complete the glue application.
        There is a direct glue application method of the doctor blade. The design requires the doctor blade to scrape the glue on the surface of the glue roller, that is, the straightness of the edge of the doctor blade and the surface accuracy of the glue roller are quite high. The squeegee is generally made of stainless steel belt with high flatness, smoothness and good elasticity.
        3. Dry part. The adhesive coating applied to the surface of the plastic film contains a large amount of solvent and has a certain fluidity. It must be dried before compounding. The drying part is mostly tunnel type, and the length of the drying tunnel is between 1.5 and 5.5m depending on the model. According to the solvent evaporation mechanism, the drying tunnel is designed into three zones:
        A. Evaporation area. This area should form turbulent wind on the film surface as much as possible to facilitate solvent evaporation.
        B. Aging area. The automatic temperature control zone is set according to the properties of the film and the adhesive, and is generally controlled at 50-80 ° C. The heating methods include infrared heating and direct radiant heating of the electric heating tube. The automatic balance temperature control is realized by the heat-sensitive components installed in the curing zone.
        C. Solvent exclusion zone. In order to eliminate the solvent volatilized from the drying of the adhesive and reduce the vapor pressure in the drying tunnel, the area is designed with an exhaust air extraction device, usually a fan or an induced draft fan.
        4. Compound part. It is mainly composed of chrome-plated hot press roller, rubber pressure roller and pressure adjustment machinery.
        A. Hot pressing roller. The hot roller is a hollow roller with an electric heating device inside. The roller temperature is controlled by sensors and instruments on the console. The surface state and thermal power density of the heat press roller have a great influence on the quality of the film-coated product. The general lamination process requires a hot pressing temperature of 60-80 ° C and an area heat flow of 2.5-4.5W / cm2.
        B. Rubber pressure roller. Press the coated product against the heat press roller with a certain pressure to make it solidify and stick firmly. The contact pressure during compounding is closely related to the adhesive strength and appearance quality, and is generally 15.0 to 25.0 mPa. Rubber pressure rollers work under high temperature for a long time, but also to keep the roller surface smooth, smooth, small lateral deformation, good tear resistance and peelability, so silicone rubber with better tear resistance is mostly used.
        C. Pressure adjustment mechanism. Used to adjust the pressure between the heat pressure roller and the rubber pressure roller. The pressure adjustment mechanism can adopt a simple eccentric mechanism, eccentric cam mechanism, screw rod, nut mechanism, etc. However, in order to simplify the mechanical transmission parts and improve the pressure control accuracy, most of them currently use hydraulic (gas) pressure type pressure adjustment mechanism.
        5. Print input section. There are two methods of manual printing and automatic input. The automatic input method is divided into two types: pneumatic and friction. Pneumatic type is to install a row of suction nozzles on the front or rear of the printed matter, relying on the "suction", "put" and movement of the nozzle to separate and deliver the printed matter. The friction input mainly relies on the reciprocating movement of the friction head or the fixed rotation to produce friction with the printed matter, separate the printed matter from the paper storage table, and convey it forward; the friction wheel rotates intermittently in one direction, and separates one printed matter every rotation.
        6. Rewind part. The laminating machine mostly adopts an automatic winding mechanism, and the winding shaft can automatically wind the compounded product into a roll shape. In order to ensure that the winding is tight and consistent, the winding shaft and the compound linear speed must be synchronized, and the tension should be kept constant during winding. As the winding diameter increases, its linear velocity must continue to be synchronized with the compound linear velocity. Generally, machines use frictional damping to change the angular velocity of the winding shaft to meet the above requirements. In order to improve work efficiency, some film laminating machines are also equipped with quick unwinding and finished product cutting devices in the winding part.

        Laminating machine gluing, drying tunnel, hot pressing three-part laminating machine Laminating machine can be divided into two major categories of instant coating laminating machine and pre-coating laminating machine. Instant coating laminating machine includes three parts: gluing, drying and hot pressing. It has a wide range of special applications and stable and reliable processing performance. It is currently widely used in China. Pre-coated laminating machine, no gluing and drying parts, small size, low cost, flexible and convenient operation, not only specializing in laminating processing of large batches of printed products, but also dedicated automatic desktop office systems and other small batches, scattered prints The laminating process is very promising. It adopts vacuum adsorption, in addition, it can automatically complete the laminating and heating processes. The laminating machine can simultaneously bond three films or plates, and has a good laminating effect.
        The laminating machine is to coat the plastic film with an adhesive, and then combine it with the printed matter using paper as the substrate, pressurized by the rubber roller and the heating roller, and form a product of paper and plastic. Due to the thin and transparent plastic film on the surface of the printed product, the surface is smoother and brighter. The laminating machine 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 film It also protects against water, dirt, abrasion, folds, and chemical corrosion.
        The use of laminating machine can effectively improve the gloss and fastness of printed products. The laminating machine can be used to apply a plastic film with an adhesive and print it with paper as a substrate, after being pressed by a rubber cylinder and a cylinder Put together to form a paper-plastic product. The detailed description of the laminating machine: the base, the wall plate, etc. are made of cast iron, never deformed, to ensure that it is not enough to affect its accuracy during the use of the process and when repairing and replacing parts. The control device of the laminating machine includes a host, a monitor and a mouse. The host is located in the base. The monitor and the mouse are placed on one side of the operating table. The other side of the operating table is a vacuum suction table. Membrane laminating products will bring a noble and elegant feeling to consumers. The packaging and printed matter after laminating by the laminating machine can significantly increase the grade and added value of commodity packaging. The glue-free film laminating machine can not apply glue unit, which saves the process and is economical and environmentally friendly. Stepless drying tunnel, saving electricity and space.
        If the transparent bright film coating is used, the printed graphics of the coated product will be more vivid and full of three-dimensional sense, which is especially suitable for the packaging of green food and other commodities, which can arouse people's appetite and consumption desire. If a matte thin film is used, the film product will bring a noble and elegant feeling to consumers. Therefore, the packaged printed matter after film coating can significantly improve the grade and added value of the product packaging.
        The three major structures of the laminating machine are as follows: the automatic input and automatic conveying mechanism of printed products can ensure that the printed products do not overlap during the transmission and enter the composite part at equal distances. The pneumatic or friction method is basically used to achieve control. The conveying is accurate and the precision is high. In the case of small-format composites, the same requirements can be met. A film laminating device is arranged above the vacuum suction table of the film laminating machine, the film laminating device is provided with an outer cover, and several control switches for controlling the operation of the FPC film laminating machine are also arranged on the operation table.