The automatic laminating machine is aimed at the surface lamination of printed products, such as books, posters, color box packaging, handbags, etc. In response to the continuous improvement of global environmental awareness, oily lamination will be gradually replaced by water-based lamination.
(1) Hot pressing roller
The hot pressing roller is a hollow roller with an electric heating device inside. The temperature of the roller is controlled by sensors and instruments on the console. The surface state and thermal power density of the hot pressing roller have a great influence on the quality of the 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.
(2) 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.
(3) Pressure adjustment mechanism
It is used to adjust the pressure between the heat pressure roller and the rubber pressure roller. The pressure adjustment mechanism can use a simple eccentric mechanism, eccentric cam mechanism, screw rod, nut mechanism, etc. However, in order to simplify mechanical transmission parts and improve the accuracy of pressure control, most of them are currently Adopt liquid (gas) pressure type pressure adjustment mechanism.

The automatic laminating machine is aimed at the surface lamination of printed products, such as books, posters, color box packaging, handbags, etc. In response to the continuous improvement of global environmental awareness, oily lamination will be gradually replaced by water-based lamination.
The head of the automatic laminating machine adopts the feeder head automatic paper feeding system, the pressing steel rod adopts the hot oil circulation heating system, the compound pressure adopts the pneumatic device, the electrical system adopts PLC programming control, and the cutting system is equipped with knife and Rotary flying knife slitting device, the back of the laminating machine is equipped with an automatic paper collection system, the whole machine occupies a small area, has a high degree of automation, simple operation and high stability.
Pre-use inspection and analysis of automatic laminating machine:
The automatic laminating machine is best to regularly check whether there is rubber or grease on the rubber roller, and wipe the rubber traces and dust on the roller in time to ensure that the appearance of the two rollers is black, and the surface of each roller must be cleaned. After using the machine each time, it is necessary to clean the machine immediately, rinse with glue thinner and wipe the rollers with a soft towel. It is strictly forbidden to scrape the surface of the drum with a sharp tool.
Every time the machine is turned on, the surface dust of each roller should still be wiped off. The computer bronzing machine checks whether the surface of each roller of the machine is black. When the machine shows defects or abnormal dynamics, it should analyze and find the reason and eradicate it. Wait until the machine is all normal before allowing it to continue to operate.
The blade line of the scraper blade of the automatic laminating machine should be flat and elastic. When the appearance of detours, teeth, curling, etc. should be modified and replaced in time, use 0.15~0.20 mm manganese steel skin or the blade of the offset printing machine. Exchange it according to the original standard.
Lubricant should be added to the transmission parts and sliding surfaces of the machine on time to ensure that the machine is in excellent lubrication conditions. Especially the large bearings of the pressure rollers are subject to high pressure and high temperature, and the lubricant is evaporated and thrown away at will. High-temperature lubricating oil, so that it can run normally under high temperature and high pressure, automatic laminating machine floor formwork support, using a steel pipe bracket composed of couplings and steel pipes, and gradually perfected as a fastener-type steel pipe bracket.

1. Paper feeding part of automatic laminating machine:
1. Maintenance of the vacuum pump: The space between the vacuum pump and the surrounding partition wall is at least 10 cm to ensure the air flow required for cooling is unobstructed, and the surrounding temperature does not exceed 45°C. Do not allow the interface to be contaminated with oil, grease, water and other contaminants to keep the connection smooth. When the vacuum pump is running, add butter (60-100: 5g and 140: 7g) to lubricate the rolling Palin and grease nipple. After 5000 hours, only the original rolling Palin is replaced.
2. Maintenance of the reducer of the lifting motor: after 100 hours of initial use, the oil is changed for maintenance, and thereafter, the oil is changed and maintained once at 2500 hours. The specification of the oil is 150 gear oil.
Second, the main part of the automatic laminating machine:
1. Maintenance of oil tank reducer: After 100 hours of initial use, change the oil for maintenance, and then change the oil to 2500/hour for maintenance once. The specification of the oil is 150 gear oil.
2. Maintenance of ceramic anilox roller: The ceramic anilox roller used after each stop should be washed and dried in time to ensure that there is no foreign matter and glue on the surface of the roller to prevent the solidified and deposited organic matter from causing soft damage to the anilox roller. If the automatic laminating machine is not used for a long time, it should be cleaned and air-dried with moisture-proof packaging to avoid mildew spots.
3. Maintenance of the mirror roller bearing seat: add butter once a week. (The butter used in this machine is 120℃ high temperature butter)
4. Maintenance of laminated rubber wheel bearing seat: add butter once a week.
5. Maintenance of high-speed machine drying wheel bearing seat: add butter once a week.
6. Maintenance of hydraulic station: It is recommended to replace the hydraulic oil after the first 10 hours of work. The specification of the oil is Mobil 46# antifreeze hydraulic oil. Then, change the hydraulic oil at least once a year, replace the filter screen and clean the oil tank thoroughly every time the oil is changed, and check the seal ring of the oil tank. Before replacing the hydraulic oil in the automatic laminator, all the hydraulic oil in the system should be emptied. The best working temperature of hydraulic oil is 30 ℃ to 60 ℃, exceeding the above temperature will affect the service life of hydraulic oil. The hydraulic oil should be filled with unused clean hydraulic oil. It is strictly forbidden to mix and use hydraulic oils produced by different manufacturers or different types to prevent the hydraulic station from working normally due to acid slag and precipitation.
7. Maintenance of mold temperature machines for water and oil: filters and solenoid valves should be cleaned once a month, heaters should be cleaned in March, and Teflon tubes, joints and electromagnetic contactors should be replaced once a year. , Terminal screws are tightened once every 3 months. Model of heat transfer oil: Mobil 605# heat transfer oil.
8. Pneumatic diaphragm pump (glue pump): Every time after work, please use clean water to pump until the pump is completely clean. Remember to do this, otherwise the pump body will be damaged due to glue blockage. Our company will not be able to guarantee the situation.
Third, the paper cutting machine part of the automatic laminating machine:
1. Maintenance of the reducer: change the oil after 100 hours of initial use for maintenance, and then change the oil to 2500/hour for maintenance once. The specification of the oil is 150 gear oil.
Fourth, the part of the automatic paper laminating machine receiving machine:
1. Maintenance of the reducer: change the oil after 100 hours of initial use for maintenance, and then change the oil to 2500/hour for maintenance once. The specification of the oil is 150 gear oil.

Brief analysis of laminating machine manufacturers There are two major types of laminating equipment: instant coating laminating machine and pre-coating laminating machine. The instant coating laminator has a wide application range, stable and reliable processing performance, and is a widely used laminating device. Pre-coated laminating machine, no gluing and drying parts, small size, low cost, flexible and convenient operation, not only suitable for laminating processing of large batches of printed products, but also suitable for laminating processing of small batches and scattered printed products such as automated desktop office systems .
The laminating machine manufacturers briefly analyze the coating forms of the laminating machine: drum reversal type, concave type, direct glue without scraper, and direct glue with scraper.
1. Brief analysis of concave glue application by laminating machine manufacturers. It consists of a metal glue roller with a textured surface and a group of film partition rollers. The glue roller is directly immersed in the glue solution, and the glue solution is taken out from the glue storage tank with the rotation of the roller. The excess surface is scraped off by the scraper Glue. 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 it can control the amount of coating more accurately and coat evenly; however, the anilox roller is difficult to process and easy to damage, and it needs to be cleaned frequently. In addition, the coating requires higher adhesives.
2. The manufacturer of the film laminating machine briefly analyzes the reversal coating of the roller. 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 of the laminator 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 coated on the surface of the film 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.
3. A brief analysis of the laminating machine manufacturers without 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.

The laminating machine manufacturer explained that for the laminating process, it mainly uses two types of materials: film and adhesive. The films used for coating mainly include bidirectional stretched acrylic film (BOPP) and polyvinyl chloride (PVC), among which BOPP film is the most widely used. Adhesives used in laminating can be divided into oily laminating adhesives and water-soluble laminating adhesives. For water-based glues, the most commonly used in production are EVA resin (ethylene vinyl acetate copolymer resin), acrylic resin, etc. In terms of its chemical structure, there are one-component and two-component, through the following aspects and Let's discuss together:
①Printing powder
Because the water-based glue can dissolve the powder sprayed on the surface of the printed product, when the snowflake point appears on the film-covered product, it is incomprehensible. In fact, the reason is very simple. The water-based glue itself is also limited by the solubility. When the amount of powder sprayed on the printed matter is greater than the dissolving power of the glue, the excess part cannot be dissolved or covered by the glue, and a large number of snowflake spots will appear. In this case, there are several solutions:
1. Coordinate the upper and lower processes to minimize the amount of powder sprayed during printing.
2. When laminating, increase the amount of glue properly and increase the ability of the glue to dissolve the powder. In actual production, the maximum amount of glue is to reach the maximum amount of glue when the product edge does not overflow.
3. Clean the suspended powder on the surface of the printed matter before laminating, you can wipe the surface manually, or install other powder removal devices on the machine.
②Clean
The laminating machine manufacturer explained that because the water-based laminating adhesive dries quickly, if it is still and does not flow, and it is exposed to the air for too long, it will dry and form a skin, which will be attached to the rubber coating roller or the pressure roller, resulting in partial coating. Or the glue layer is too thin, which also causes local pressure to increase, so keep the glue roller and pressure roller clean during the laminating process. In addition, there is too much dust in the surrounding environment or there is dry rubber and cut in the glue. The film fragments underneath will also affect the quality of the film, so it is necessary to pay attention to cleanliness and hygiene, and pay attention to the storage of glue. You can add a filter device for glue in the actual and production process.
③ Paper-plastic separation
The phenomenon of paper-plastic separation is easy to appear in products with a large printing area and large solid areas. Because the surface ink layer is thick, the glue is difficult to wet, diffuse, and penetrate, so the adhesion is not strong. The solutions are:
1. Check the production date and shelf life of the glue to see if the glue has deteriorated.
Second, whether the film is within the shelf life, what is the surface corona value.
3. Refer to the technical indexes of the glue, whether it is operated correctly according to the regulations in actual production
4. Replace other brands of glue with large viscosity.
5. Improve the environmental humidity when the film and product are dry.
④ deformation
There are several reasons for the deformation:
1. The amount of gluing is too large, the paper absorbs moisture and deforms, so under the prerequisite of ensuring product quality, the amount of gluing should be reduced as much as possible.
Second, the film is seriously stretched and deformed. At this time, the loose tension of the film should be adjusted appropriately. The smaller the tension, the better the film should be evenly attached to the paper.
3. The winding tension is too large. At this time, according to the situation, when ensuring that the product is transported and wound onto the roller, the smaller the tension, the better.
4. The temperature and humidity of the external environment where the product is located vary greatly.
In general, with the rapid development of the printing and packaging industry, the continuous innovation of processes, the continuous emergence and replacement of new materials, we will also face new problems and new challenges. Laminating machine manufacturers will also follow the pace of the times and seek higher development.