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.

        The laminating machine is divided into two categories according to different equipments and processes, one is "coated film" and the other is "pre-coated film"; there are two kinds of film and sub film.
        Instant-coated film is a process that uses instant-coated film machine to immediately stick film with glue to carry out paper-plastic compounding. It mainly consists of a coating film processing plant or a processing workshop, where the roll plastic film is coated with an adhesive as required, dried (slightly) compounded, and after pressure, the paper film is adhered together to form a coated product. That is, there are two types of film coating equipment: automatic and semi-automatic. The basic working principles are the same; the process flow mainly includes unwinding → sizing and coating → drying → compounding → slitting → finished product accumulation.
        The laminating process of laminating machine refers to the whole process of laminating pictures and photos, including film selection, film making, and cutting. Mainly used for post-production of advertising pictures and wedding photos. The pictures covered with film have high anti-corrosion, waterproof, dustproof, anti-wrinkle and anti-ultraviolet erosion performance, which can produce strong three-dimensional sense and artistic appeal. So what should we do before the lamination process?
        Inspection work before laminating machine:
        1. Check before laminating machine to 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 completing 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 rate of the laminating glue, and adjust the parallelism between the rollers. Adjust the measurement 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.

        The automatic laminating machine has a small footprint, simple operation and fast speed. The feeding table adopts a conveyor belt, and the output adopts a power roller, which can withstand heavy heavy plates; it is widely used in stainless steel plates, aluminum plates, aluminum plastic plates, UV paint plates, iron plates, decorative cabinet doors, paint plates, paint Panel, acrylic board, color steel plate, fireproof board, plexiglass board, cabinet door laminating machine, signage, high-end furniture board, color coated board, electrical appliance PVC and other flat coating, affixed, pressed with self-adhesive PE protective film , Electrical cabinets, decorative films, etc., in order to avoid pollution, corrosion, power transmission and scratches during production, processing, transportation, storage and use, protect the original smooth surface and the lens explosion-proof crack. This series of film laminating machine is composed of upper and lower rubber rollers, frame, power transmission and control device, film support frame, etc. It has the characteristics of flat film, no wrinkles, no bubbles, simple operation and long service life.
        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 scouring 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 different 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.
        1. 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.
        Second, automatic laminating machine hot mounting: the mounting method of the dedicated hot film on the 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 Because of its good light permeability and water resistance, good heat resistance and strong hardness, it is suitable for the 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.