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Printed materials in the book cover the surface of cover layer of polypropylene plastic, used to increase the surface brightness, it has moisture, dirt, folding and other functions, film appears bright after the printed materials, luxury, quality value greatly increase. However, the reasons for operational use of plastic film mulching products do not often appear bright or sparkling, wrinkling and so on. Now talk about common problems in the operation processing. Print Network HC Book cover and other printed materials in the surface layer of polypropylene plastic cover, used to improve surface brightness, it has moisture, dirt, folding and other functions, film appears bright after the printed materials, luxury, value much higher grade. Hydrosol with high performance adhesive, ink layer can produce a good affinity. No use of organic solvents, on the printed paper, ink no erosion, no wrinkles, loss of adhesion, film. At the same time in the production site and storehouse eliminated fire hazards, ensuring safe production. Not use organic solvents, no harmful volatile gases pollution, national standards, clean production environment, protect human health. But also on the just finished printing ink printed matter is not completely dry coating process, saving hours of work, shorten the processing cycle. Also because of its light-fastness properties of pigment inks do not cause bleeding and discoloration, do not change color due to aging and yellowing. Hydrosol cheap, coating with less, low-cost, water sol now replaced the hot melt resin adhesive used. For operational use and other reasons, however, after the coated products do not often appear bright or sparkling, wrinkling and so on. Now talk about common problems in the operation processing. 1. Temperature Control In the rain or the rainy season, if the temperature regulation is inappropriate, coated products is not bright. Silica rollers are clearly steam, which is a lot of moisture absorbing paper due. Then hot roller temperature adjustable to 40 degrees Celsius. If the temperature is too high, it will blister. Some water sol Laminating Machine No heating device, the need to increase before lamination bake lights, to layer drying, to reduce foaming. 2. Pressure controls Should be in the coated paper thickness adjustment under pressure, generally 5Pa. If the pressure is too wrinkled and paper congress membrane deformation. 3. Gluing control Plastic volume control is absorbed by rubber rollers and rubber rollers on the size of the control of the gap, but also increase the scratch film. Large amount of light plastic film blowing pressure, the pressure re-glue a small amount. Glue the amount of the master, not only cover prison uniform, without producing crystal point. If the glue is too large, it will make the product does not shine. Gluing process should note that certain adhesive solidified to prevent small particles and impurities remain in the plastic plate. If the scratch card in the film, will produce a white Offset printing , Linear cause blistering. Before the start of alcohol use on solvent cleaning Cots And the plastic bucket, if not cleaned on a roller will cause needle bubble. Gel containing impurities can be diluted with water, impurities precipitate, when thinner used to reduce plastic waste. 4. Roller cleaning Separation occurs when walking paper, plastic will be rolled directly on the silicone rollers, resulting in accumulation of the product easy to fold, or affect the brightness of the product, should always wash drum, kept clean. Drum itself usually will not wrinkle, to be replaced. 5. Temperature and humidity control Of temperature and humidity changes, the paper to absorb moisture generated "He Yebian", coated paper easy to wrinkle when to keep temperature and humidity balance. Heating roller temperature is too high, tight side will wrinkle the paper, are requested to control the temperature. 6. Feeder Control Will skew feeding paper corrugation, operation should seriously, so that feeding level services, the pressure on both sides of the same. At feeding time, for each sheet of paper are laminated 3mm, and the control of glue, preventing the phenomenon of excess glue. This will reduce the product after each coating adhesion. If the connection from the office to fight wrinkle or bubble, should maintain the temperature and humidity balance conditions, due to increase pressure on the bonding level services, to reduce foaming. 7. Volume control film Study both sides of the elastic film prevent inconsistent play produced wrinkles. I am an expert from benchtesting.com, while we provides the quality product, such as nozzle test bench Manufacturer , bosch test bench, bench testing,and more.
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