The laminating machine can be divided into two categories: instant coating laminating machine and pre-coating laminating machine. It is a special equipment for paper and film. Instant coating laminating machine includes three parts: gluing, drying and hot pressing. It has a wide range of application and stable and reliable processing performance. It is currently widely used in China. Pre-coating 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 small batches and scattered printed products such as automated desktop office systems Processing is very promising.
        The pre-coating film machine part is as follows:
        1. Composite parts. The composite roller and calender roller group including the group. The compound roller is provided with a heating pressure roller and a silicone rubber composed of a pressure roller. The hot pressure roller is a hollow roller, equipped with a heating device inside, forging, polishing, fine grinding and processing of the hard chrome-plated surface; the hot pressure roller temperature sensor tracks the sampling and is corrected by the computer at any time; the composite material pressure adjustment eccentric cam mechanism Can be adjusted. The calender roll group is basically the same composite roll group, that is, the pressure roller composition is pressed with silicone gel from the pressure of the chromium roll, but there is no heating device.
        2. Computer control system. The computer control system uses a microprocessor, a main board configured with a laminator hardware, a numeric keypad, an optical isolator board, a power board, and a stepper motor power driver board. Print the input section. The automatic conveying mechanism can ensure that there is no overlapping and equidistant input of the composite part in the transmission. Generally, it is realized by accurate conveying and high-precision inflation or friction control. When the composite format is small font, it can also meet the above requirements of. Transmission system. The clutch high-power motor drive is controlled by a computer. After being decelerated by three chain-driven gears, the drive's paper feed mechanism and compound section and the calendering mechanism silicon pressure rollers rotate. Maintain proper working pressure, pressure roller group adjusts pressure steplessly.

        The laminating machine can be divided into two major categories, namely glueless laminating machine and pre-coating laminating machine. It is a kind of special equipment for paper, board and film laminating. It is combined with rubber roller and heating roller to form a product of paper and plastic.
        The pre-coating laminating machine adopts the form of glue coating, such as using solvent volatile glue, water-based glue or hot-melt adhesive to pre-coat on the laminating material for hot pressing, while the glueless laminating machine is different from the pre-coating type Laminating machine, glue-free coating does not use conventional biaxially oriented polypropylene film (OPP), but PE film with high pressure polyethylene as the main material, PE film has better hot melt and plasticity, PE film After a special strong treatment on one side, the PE film can be hot melt compounded on the color printing paper with a glueless laminating machine. This non-adhesive coating can withstand temperatures ranging from 20 to 120 ° C. PE film is a material with a weak van der Waals force. The waxy additive composition makes its surface appear to be a weak interface layer.
        Therefore, in the hot melt state at a lower temperature, its adhesion to paper is also smaller, so in the process of non-adhesive film, a layer of auxiliary material needs to be placed between the heating roller and the PE film (for One side surface of the PE film was specially treated with strong force), and then passed through the non-adhesive film laminating machine, and then the film product was removed from the auxiliary material. In addition, there is also a glue-free laminating process for the glue-free composite film, which can be directly compounded with paper without glue at a certain temperature and pressure, mainly used for self-adhesive label lamination.

        The 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 of laminating machine
        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 of laminating machine
         The laminating machine presses the coated product to the hot pressing 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 of laminating machine
        It is used to adjust the pressure between the heat pressure roller and the rubber pressure roller. The pressure adjustment mechanism can use simple eccentric mechanism, eccentric cam mechanism, screw rod, nut mechanism, etc .; Adopt liquid (gas) pressure type pressure adjustment mechanism.

        The pre-coating laminating machine is a special equipment that combines printed materials with pre-coated plastic films. It consists of four main parts: pre-coated plastic film unwinding, automatic input of printed materials, hot-press laminating, and automatic rewinding. It is composed of plastic film flattening, vertical and horizontal slitting, computer control system and other auxiliary devices.
       The pre-coating laminating machine uses the pre-coating peritoneal process for laminating, without gluing and drying parts. It has a short process flow, compact structure, simple operation, low cost, large production flexibility, no solvent odor, and no environment Pollution and good film quality are not only suitable for the processing of large-volume printed products, but also for the processing of small-volume and scattered printed products such as automated desktop office systems.

        In autumn and winter, paper is very susceptible to static electricity, especially in the dry north. For Beijing, due to low indoor air humidity, water molecules are greatly reduced, plus heating, static electricity is very large. The static electricity is easy to attract dust, which will have a great impact on the cold laminating film. Therefore, the laminator machine can be connected to the ground wire and discharge the static electricity with the ground wire. Before live operation, be sure to discharge your hands. You can wear a static wristband or touch other grounded metal objects.
        In addition, we must pay attention to indoor air humidity; some research data shows that when the indoor air humidity is less than 30%, it is conducive to friction and static electricity. If the temperature is increased to 45%, static electricity is difficult to produce. The impact of electrostatic particles on the laminating machine is inevitable, especially the highlighting, but we can still reduce the impact to a minimum. Many fully automatic laminating machines used in large printing plants require the use of professional static elimination such as ion wind bars. Equipment, its strong ion wind removes static electricity and dust on the surface of objects.
        Now there are many PE electrostatic films, PET film electrostatic film uses the principle of electrostatic magnetism to paste PVC film, this is mostly used for anti-counterfeiting printing labels, stickers, barcode stickers, etc., the width of the film is small and it is not suitable for graphics Laminating application. How to eliminate static electricity when laminating the laminating machine, if you have other better methods, then you may wish to share it.