In our lives, as long as we pay attention to the observation, we can see the color of the surface of the package of some commodities decolorized and dirtied. This is because the carton undergoes several frictions during transportation and transportation. The friction causes the ink (pigment) printed on the surface of the carton to fall off. Especially in the box with white paper on the box is more serious, directly affect the appearance of the product image, and the surface of the carton ink is easy to fall off directly depends on the use of ink adhesion (adsorption on the printing paper surface). In order to ensure the appearance and quality of the products used, the quality of the ink on the surface of the carton should normally be regulated and tested.
The project tests the range of products it can adapt to: white cardboard cartons with more complex printing patterns, color cardboard cartons for coated papers, cartons for full-page printing, etc. Large areas of ink or ink are present on the surface of the box. Relatively thick carton products.
The abrasion resistance of the ink layer on the surface of the carton was examined using the “dry friction test methodâ€, which was used to evaluate the anti-wear properties of the printing ink on corrugated boxes. The test method usually uses manual detection method and friction tester detection method.
Manual detection method: use a piece of cube metal weighing 2 kg. The size of the iron piece is 100 mm in length, 50 mm in width, and 48 mm in thickness. The test white paper with a width of 50 mm and a length of 220 mm will be used. The test paper is tightly attached to the iron piece (the iron piece can be installed with the corresponding paper iron piece to fasten the measuring paper), and then the iron piece which holds the paper is held by hand, and the ink is uniformly printed on the surface of the carton to be tested. The movement (note that the palm can not apply pressure to the iron when moving, should rely on the weight of the iron itself to exert pressure on the cardboard surface to carry out friction), the travel stroke is about 60 mm, according to the quality requirements of the product is usually in the friction 40, Observe that there are no obvious ink marks on the surface of the test paper (Quality products allow a small amount of intermittent lines with slight ink marks on the surface of the paper). If the surface appears more severe large-scale or continuous lines off ink marks, then the surface of the product printing ink layer there is a more serious phenomenon of color. (Some highly demanding high-end customers are not allowed to have obvious deinking after at least 200 or even 400 tests of abrasion resistance on the surface of the carton.)
Friction tester detection method: The detection principle is equivalent to the manual detection method, but the above-mentioned manual detection method is improved to the instrument operation, and the accuracy and stability of the detection are enhanced. (The detection method is described in detail in the specification of the instrument.) A conditional carton factory requires only a certain amount of funds to purchase the instrument, and it can achieve convenient, rapid, and accurate inspection. At present, the domestic manufacturer of this instrument is the PN-PID ink printing and decoloring tester of Hangzhou Pinshen Technology Co., Ltd. The technical parameters of the instrument are in line with the requirements of GB/T 7706 and GB/T 7706.
There are many factors that affect the abrasion resistance of the ink layer, and it is also very complicated. However, it is simple in terms of the ink itself, the printing paper, and the temperature and humidity of the printing environment. The abrasion resistance of the ink itself is mainly reflected in the cohesion and adhesion of the ink. When the ink cohesion and adhesion force decrease, the wear resistance of the ink deteriorates, and a high wear resistance UV surface oil can be used to improve the wear resistance and pass. Adjust the process parameters or replace the material to ensure the UV base oil adhesion. At the same time, it is also affected by the temperature and humidity of the printing environment. Wet-weather printers are prone to blurring and de-inking. This is because the humidity of the specimen causes moisture to become soft and the printer must increase the pressure when the ink is transferred to the paper. Due to the high humidity of corrugated cardboard, it is easier to enlarge the font, causing printing blur or deinking. In addition to the ink itself, it is also affected by the absorbency of the printed paper. Paper has low water absorbency, so the water absorption of the ink is naturally reduced. The ink floating on the surface is easily deinked. If it is known that the water absorbability of the paper is poor, then the process must be improved from the tile line process.
Whether the carton printing ink wear-resistance is good or not is mainly determined by the quality of the ink and the varnish on the surface of the carton. Therefore, when producing carton products with high abrasion resistance requirements, the ink supplier must be required to provide corresponding wear resistance. Good adhesion and ink and varnish.
GAKO Aquatics offers several aquarium options to suit your style
From small Fish Tank to large freshwater/saltwater fish tanks. GAKO Aquatics supplies a variety of aquarium options to suit your style, experience level, and the needs of maintenance.
Aquariums are a relatively simple and low-maintenance way to add a unique touch to your home decor. In addition, fish are great pets for people of all ages, including children. There are plenty of aquarium fish tanks available at GAKO Aquatics, it`s up to you to decide which type and style aquarium is right for your home, office etc.
Small fish tanks
Aquariums And Fish Tanks,Large Aquarium,Aquarium Fish Tank,Small Aquarium Kits
Shenzhen GAKO Aquatics Products Co., Ltd , https://www.gako-aquarium.com