| 镭射膜的加工工序概括 |
| 添加时间：2017/11/28 16:47:01 浏览次数： |
| 自从20世纪末彩虹镭射材料在市场面世，在近10年间其应用已经在包装印刷领域广泛使用，因镭射膜的整体光感效果、防伪性能等存在明显的优势，镭射膜在烟酒、化妆品、高档食品等领域成为包装标配。而在镭射膜包装市场上，工艺和材料也相继推陈出新，如涂覆镭射膜工艺、镭射转印刷到镭射定位印刷等发展，材料上也从有版缝镭射膜到无版缝镭射膜。虽然工艺和材料不断更新，但镭射膜在生产环节依然离不开如下几道工序：制镭射模压版、压镭射图文、涂布、分切、转印、熟化等流程。薄膜通经过整理，重点介绍其中几个关键步骤。 Since the end of twentieth Century launch of rainbow laser materials in the market, in the past 10 years and its application in the field of packaging and printing has been widely used, because of the obvious advantages of the overall effect of laser film, optical anti-counterfeiting performance, laser film packaging become standard in tobacco, high-grade cosmetics, food and other fields. In the laser packaging market, technology and materials have also been developed, such as coating laser film technology, laser transfer printing to laser positioning printing, and so on. The materials are also from plate laser film to plate free laser film. Although the technology and materials are constantly updated, the production process of laser films still cannot be separated from the following processes: making laser moulded plates, pressing laser graphics, coating, cutting, transferring and ripening. The film passes through the finishing, and focuses on several of the key steps. 制镭射模压版 Laser molding 制镭射模压版是镭射膜生产的核心环节之一，压版的铸造水平决定了镭射膜的生产质量，铸造镭射模压版与印刷工艺中的制版完全不一样，要求也不同，镭射模压版采用特殊金属薄片经专门电铸而成，版材兼具较强的硬度和柔韧性，在高温烘烤下不能变形，并且在放大镜下观察也不能看到版面有任何微小的缺陷。所以，镭射模压版的铸造质量要求非常苛刻。版材也非常昂贵，因此使用时非常小心，在擦版、维护时不能有任何微小的碰撞，不能有油污、水点溅到镭射模压版上，负责都会导致产品报废。 System version of laser molding is one of the key factors of laser film production, casting level pressure determines the version of the laser film production quality, casting laser molding version and printed in the process of making a completely different, different requirements, using a special version of laser molding of sheet metal by electroforming and special plate, with strong hardness and flexibility, not deformation in high temperature baking, and observe the layout cannot see any tiny defect under a magnifying glass. Therefore, the casting quality of the laser mould press is very demanding. Plate is also very expensive, so it is very careful to use. There is no slight collision when cleaning and maintenance, no oil and water splashing on the laser die press. It will lead to scrapping products. 涂布工艺 Coating process 一般镭射膜有两种材质，分布为BOPP和BOPET。BOPP可以直接在上面压镭射图文，而BOPET则不行，如果要在BOPET基膜上压镭射图文，就要先在PET基膜上涂布非常薄的专用涂料，然后再压镭射图文。而涂布专用涂料过程中，既要保证合适的黏度，同时对涂布环境有较高要求，如密封、无尘、恒温、恒湿等。 The general laser film has two kinds of material, which are distributed in BOPP and BOPET. BOPP can be directly above the pressure of laser graphic, while BOPET is not, if you want to in the BOPET film on the pressure of laser graphic, we must first in the PET film coated on the special coating is very thin, and then press the laser patterns. In the process of coating special coating, it is necessary to ensure suitable viscosity and high requirements for coating environment, such as sealing, dust free, constant temperature, constant humidity and so on. 压镭射图文 Laser radium 压镭射图文的原理是在高温下将镭射模压版直接压在薄膜基材或专用涂料上，形成高低不平、大小不一的光折射点，光照后，不同波长光线的漫反射会使镭射膜呈现彩虹光芒。 The principle of pressing laser pictures is to directly press laser moulded plates on thin film substrates or special coatings at high temperatures, forming uneven refraction points. After illumination, the diffuse reflection of different wavelengths will make the laser film rainbow. 压镭射图文时，要掌握好温度、速度、张力三个要素，如果这三个要素控制不够精确，就会产生严重的色差、黑斑、白斑、水纹、褶皱、云彩花、麻点等问题，有时候也会出现镭射图文和光柱变形以及张力不稳定等质量缺陷。这些缺陷会给后道印刷带来很大麻烦，甚至会使镭射膜无法投入印刷生产中。 The pressure of laser text, to master the three elements of good temperature, speed, tension, if these three elements of the control is not precise, it will have serious color, black, white, water, clouds, folds, pits and other problems, sometimes the laser patterns and the beam deformation and tensile instability and other defects. These defects will bring a lot of trouble to the post - Road printing, and even the laser film can not be put into printing production. 真空喷镀 Vacuum spray plating 完成压镭射图文后，如果要实现金属效果就需要在压好的镭射图文上喷镀一层金属箔，主要采用真空镀铝机将不同的金属丝通过强电流在真空容器中雾化，覆盖在压好的镭射膜上。喷镀环节可以镀铝、镀铬、镀镍、镀铜、镀铁等，可以镀出哑光素面、亮光镜面等效果，真空喷镀效果由所采用的金属材料而定。 If we want to achieve the metal effect after we finish the laser image, we need to spray a layer of metal foil on the pressed laser picture and text. We mainly use the vacuum aluminum plating machine to atomized the different metal wires through the strong current in the vacuum container, and then cover them on the pressed laser film. Links can be sprayed aluminum, chrome, nickel, copper, iron plating, plating a matte, light can face the mirror effect, vacuum plating effect by using metal materials and. 真空喷镀的工艺操作难度很大，以真空镀铝为例，受电压、电流、真空度、材料纯净度等因素影响，镀铝过程可能会产生铝变色。飞溅、掉铝、黑点、斑点、起泡等质量缺陷，会影响最终的镭射膜质量，容易造成转移不良和大量掉铝现象。 The vacuum spraying process is very difficult to operate. Taking vacuum aluminum plating as an example, the influence of voltage, current, vacuum and material purity will cause aluminum discoloration. The quality defects such as splash, aluminum drop, black spot, spot, and foaming can affect the quality of the final laser film, and easily cause bad transfer and a large amount of aluminum loss. 经过真空喷镀工艺后，为保证后加工顺利进行，必须对金属箔进行表面处理，以改善印刷适性。处理方式主要有两种：涂布清漆（涂料）和电晕处理，可根据金属箔表面性质的不同选择适当的处理方式。 After the vacuum spray plating process, in order to ensure the smooth process of the post processing, the surface of the metal foil must be treated to improve the printability. There are two main types of treatment: coating varnish (coating) and corona treatment, which can choose appropriate treatment according to the different surface properties of metal foil. 除了上述普通镭射压膜技术外，激光全息防伪定位镭射模压技术也是比较新的高科技压膜技术，与普通镭射膜生产工艺不同，在压定位镭射膜的时候，需要在制版前就计算好全息防伪镭射印刷的位置，将防伪图案植入镭射模压版中特定的位置，然后进行激光定位模压，这样在转移激光全息定位镭射膜时，就能把防伪镭射图案转移到印品表面的相同位置。 In addition to the ordinary film laser technology, laser anti-counterfeit laser holographic positioning and molding technology is the new high-tech film technology, different production and ordinary laser film process, when the pressure positioning laser film, in plate before calculating holographic laser printing position, the specific position of false pattern implanted laser molding edition then, the laser positioning in transfer molding, laser holographic laser positioning film, will be able to transfer to the same location pattern anti-counterfeit laser printing surface. |
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