In the current printing and packaging process, in order to ensure that the printed materials are not tampered with in circulation, in order to improve the waterproof function, or to improve the product grade, etc., a layer of protection will be applied to the surface of the printed materials, some of the upper layer of varnish, some overlying A layer of film and so on. UV glazing in the coating process is relatively complicated, and the problems may be more. At present, due to the poor affinity of UV oil and paper, the phenomenon of glue opening often occurs during the pasting or pasting process. After the film is coated, the surface tension and surface energy of the film may have different values, sizes or differences under different conditions. In addition, the different adhesive strengths of different brands of glue may cause the phenomenon of opening. . Once the product is delivered to the customer and then opened, there will be fines. All these make the manufacturers more annoyed. In order to minimize the occurrence of the above situations, some customers do not hesitate to increase the cost of purchasing imported or domestic high-grade paste glue. , However, if the chemical is not properly kept, or other reasons, there may still be open plastic phenomenon.
In the traditional craftsmanship, in order to effectively deal with the phenomenon of opening the glue, each folder-gluer machine manufacturer is equipped with an edger on each type of folder-gluer machine, and polishes the paste of the UV light on the part of the life-span, effectively solving the problem of opening the glue.
The coated products are not easy to grind with the grinding wheel, or most of the coated products are not well polished, and the method of cutting teeth is more often used, or when the film is laminated, the position of the life is opened. With high-quality glue, it is also more effective, but it is not the best method.
While gluing boxes and gluing boxes, although the problem of bonding is solved more effectively by polishing the life, the following problems still exist:
1. Part of the paper paper powder that is worn away during grinding will cause pollution to the environment around the machine and increase the wear of the machine equipment;
2. Because the direction of linear velocity of the grinding wheel is opposite to the direction of product movement, it will inevitably affect the running speed of some products and reduce the work efficiency.
3. Although the coating is rubbed off, only the UV coating and a small amount of paper surface coating are worn away. For high-end kits, cosmetics boxes, etc., the general manufacturers do not dare to use ordinary glue to stick the box. , paste cartridge costs will not be too low.
The situation of laminating plastics is better than that of UV products. However, the method of laminating the lids can not be used for the small box products. There are also process problems in the cutter teeth line, and the cost of the cutter plate is increased.
Paste the surface of the product covered with the film and the UV light, and the polished tongue of the product can only be polished with a flat paper tongue, and if it is a carton carton, because the surface is concave and convex , so the effect of polishing is extremely poor.
Comprehensive analysis of the above situation, there is now a kind of technology to solve the above-mentioned contradiction, that is, do not have to polish the surface of the product or hit the tooth line, do not use high-cost glue, effectively solve the traditional paste box process Big problem:
First, the impact of paper powder on the environment and equipment;
Second, grinding affects work efficiency;
Third, the product will open plastic;
Fourth, the paste box costs higher.
This technology is low temperature plasma jet technology.
BSP series surface treatment system uses low-temperature plasma particle flow technology to process the paste box part, remove the organic contaminants on the surface of the paste, and perform deep cleaning. Many physical and chemical changes occur on the surface of the laminated material, or the engraving occurs. Erosion and rough, or the formation of a dense cross-linked layer, or the introduction of oxygen-containing polar groups, so that hydrophilicity, adhesion, dyeability, biocompatibility and electrical properties were improved.
After treatment of the surface of the material under suitable process conditions, the surface morphology of the material has undergone a significant change, and a variety of oxygen-containing genes have been introduced to convert the surface from non-polar, hard-to-adhesive to polar, viscous, and hydrophilic. Sex, improve the surface energy of the bonding surface, and does not cause any damage to the surface, does not cause film peeling off or coating on the surface, completely changes the physical properties of the surface of the object in the cassette area, greatly increases the surface tension value, and greatly improves the material The affinity of the surface makes the adhesion of the gluing area and the glue significantly stronger. Since the treatment system handles the surface with a dual physical and chemical reaction, the surface properties after treatment will not rebound, so after treatment by the BSP system The paste will not be opened after proper bonding, and the bond will be more secure.
From the surface phenomenon after plasma treatment, the surface tension value of the treated UV and film can be as high as 40-60 dyne (depending on the speed and the difference between the effective distance of the flame and the object to be treated and the difference ), while the normal untreated surface tension values are only not higher than 34 dyne or even lower. In addition, when the surface of the tongue is treated, the flame always has the proper temperature, and this temperature brings about the heat Being transferred to the surface of the paste tongue, in the low temperature conditions in winter, it plays a very positive role in improving the initial tack properties of the paste glue.
Therefore, the benefits of the low-temperature plasma particle flow technology in the gluing process are: 1. The product quality is more stable and will not be opened; 2. The cost of the gluing chamber is reduced. If the conditions are available, ordinary glue can be directly used. Cost savings of more than 30%; Third, the direct elimination of paper and paper hair on the environment and equipment; Fourth, improve work efficiency, five. For the north of the customer, the low-temperature plasma processing machine in the winter is more apparent.
Low-temperature plasma spraying technology is applied to the printing and packaging of film-covered products, including BOPP film, matte film, PET film, aluminized film and other plastic products, as well as non-delaminated UV products, specifically as covered film boxes , Industrial product packaging, kits, cosmetics packaging, electrical packaging, cardboard, corrugated box color box color box can be handled.
Taixing Chaobang Adhesive Co., Ltd.
