First, remove the adhesive
Crystal brand withdraw adhesive 8045
Retacking agents have a very low viscosity and are generally used in lithographic and flexographic printing inks to reduce their tackiness. In offset printing, due to changes in paper properties and printing conditions, such as large oil absorption, poor surface strength, and positive and negative surface coating phenomenon, when the desiccant is excessive or the room temperature of the printing room is too low, it will cause the paper to pull the hair, printing Stacking, pasting, and other defects affect the quality of printed products. Therefore, when the above phenomenon occurs, an appropriate amount of detaching agent can be added, so that the above failure can be reduced and eliminated.
Second, withdrawal agent
Crystal brand remover 8012
Diversion agent, also known as diluting agent, is used in offset printing. There are two common light-reducing agents: one is a clear oil for use in bright inks, and the other is a resin-type lighter for resin inks. If the ink is found to be too dark to restore originals during printing, appropriate amount of lightener can be added to achieve the desired effect.
Third, desiccant and anti-drying agent
Red dry oil, dry white oil
Desiccant is one of the most important printing ink additives. According to the printing conditions and the printed paper, the amount, type, and method of use of the desiccant are also different. The commonly used desiccants are red dry oil and dry white oil. The dryness of red dry oil is from outside to inside and the white bath oil is dried simultaneously with the outside. When printing, I chose the type of dry oil according to the drying requirements of the printed product and the ink color. The amount of general dry oil is 2% to 3%, too much will be contrary to the base, so that the drying rate decreases.
Anti-desiccants are also known as antioxidants, which are an ink additive that is compatible with desiccants. In the printing process, shutdowns are often caused by various reasons. When the downtime is long, the ink on the ink will dry out. In order to solve such problems, it is necessary to add appropriate amount of anti-drying agent to the ink on the machine and run the machine a few times so that it will not dry too quickly.