Surface Finishing
Surface finishing is the surface of the printed materials and then appropriate processing, so as to improve the surface of the printed materials, light, water, heat, folding, abrasion, chemical resistance; to increase the luster of the printed materials and sense of art; to play a role in protecting the printed materials and beautify the printed materials, improve the value of the printed materials. Common methods of surface finishing of printed materials include varnishing, laminating, foil stamping, die-cutting, creasing or other processing treatments.01 Meaning
Laminating is coated with adhesive plastic film over the surface of the printed materials, after heating, pressure treatment, so that the printed materials and plastic film tightly combined together to become a paper-plastic finished product of post-press processing technology. Laminating process belongs to the paper-plastic composite process in the composite process, is a dry composite.
Varnish is coated on the surface of the printed materials (or spray, print) on a layer of colorless transparent paint, after leveling, drying (calendering) on the surface of the printed materials to form a thin and uniform transparent layer of bright processing technology, the process of coating (commonly known as varnish, including film-forming resins, solvents and auxiliaries) coated on the surface of the printed materials leveling and drying process.02 role and meaning
In the print surface covered with a layer of plastic film (film) or coated with a layer of varnish coating (varnish), can make the printed materials with friction, moisture, water and dirt, etc., not only to protect the printed materials, to extend its service life, but also improve the brightness of the surface of the printed materials to enhance its ornamental, so that the printing of graphics and text colorful, rich in a strong visual effect, thereby enhancing the grade of the goods, increasing the Value-added. For example, book cover lamination, cosmetic packaging box surface varnish.
Therefore, laminating and varnishing is one of the main processing techniques for post-press surface finishing of printed materials, they not only make the surface of the printed materials, "bright" up, to attract the eyes of consumers, but also to protect the printed materials, improve the use of performance, is now widely used in books and magazines, albums, a variety of documents, advertisements, manuals, surface finishing and a variety of paper-based packaging products. Now it is widely used in books, albums, various documents, advertising manuals and various paper packaging products for surface decoration.03Different process
Laminating process
According to the different raw materials and equipments used, laminating process can be divided into ready-to-coat laminating process and pre-coating laminating process.(1) Ready-to-coat laminating
Firstly, the roller coating device is used to spread the adhesive evenly on the surface of plastic film, and the solvent in the adhesive is evaporated after the drying device, and then the prints are pulled to the hot compression laminating device, where the plastic film and prints are pressed together to complete the lamination, and at the same time the rewinding is completed, which is then deposited in the finalizing and slitting. This method is now commonly used for domestic. From the point of view of the adhesive material used in the coating film, it can be divided into solvent-based adhesive laminating film and water-based adhesive laminating film.2）Pre-coated laminating film
Pre-coating laminating process is a professional manufacturer will be pre-quantified adhesive uniform coating on the plastic film, after drying, winding, packaging made of products for sale, and then processing enterprises in the non-adhesive coating device on the laminating equipment for hot pressing, so as to complete the print laminating process.
Pre-coating laminating process greatly simplifies the laminating process because the laminating equipment does not need binder heating and drying system, and it is very convenient to operate, and at the same time, there is no solvent evaporation, no environmental pollution, and it improves the labor environment; what's more important is that it avoids the occurrence of laminating quality faults such as bubbles, delamination and so on, and the transparency of the laminating products is very high, so it has a broad application prospect compared with that of the coated laminating process.Varnishing process
According to the different types of varnish coatings, the varnish process can be divided into solvent-based varnish, water-based varnish, UV varnish and so on.(1) solvent-based varnish
Solvent-based varnish refers to benzene, esters and alcohols as a solvent, thermoplastic resin for the film-forming resin varnish process, in the varnish process, the solvent volatilization and resin polymerization or crosslinking reaction into a film. Characterized by small investment in equipment, low cost, but the solvent volatilization and residue in the prints will cause environmental pollution, harmful to humans.(2) water-based varnish
Water-based varnish is a water-soluble resin or different types of water-dispersible resin as a film-forming material varnish method, water-based varnish coating water as a solvent, coating and drying process without organic solvent volatiles. Characterized by the varnishing process without irritating odor, no pollution to the environment, harmless to the human body, widely used in tobacco, pharmaceuticals, food, cosmetics and other commodity packaging.(3) UV varnish
UV varnish that is, ultraviolet radiation drying varnish, it is the use of ultraviolet light irradiation varnish oil instant triggered by the rapid photochemical reaction of the varnish oil, the formation of the surface of the printed materials with a mesh chemical structure of the glossy coating. The curing process of the varnish is the same as the drying process of UV ink, characterized by good luster, heat resistance, abrasion resistance, fast drying, safety and environmental protection, and has a broad market development prospects, as with the water-based varnish, used in pharmaceuticals, food and other areas of commodity packaging.
Shenzhen Shuangyi Optoelectronic Technology Co., Ltd. is a high-tech enterprise with machine vision as the core technology and independent technology research and application development as the guide. Since its inception, the company has continued to innovate, in the field of intelligent automation developed more than 20 independent intellectual property rights in the field of vision alignment system, robot vision positioning, vision detection, image processing library as the core of more than 20 products. Involved in automatic laminating machine, screen printing machine, exposure machine, stacking machine, mounter, intelligent detection, intelligent laser and many other industry fields. The highest production precision of Shuangyi vision system can reach um level, with accurate and fast image processing, which elevates the production level of intelligent automated manufacturing industry to a higher level, improves the previous backward production process, and is recognized and affirmed by the majority of users. With the popularization and development of intelligent automation production, Double Next will bring more comprehensive, finer and more intelligent technology and services to the majority of production industry.
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