Six details of the correct use and maintenance of

2022-10-13
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Six details of the correct use and maintenance of the ink roller need to be emphasized

release date: Source: Chinese printing carton color box browsing times: 7815 copyright and disclaimer

core tip: Introduction: the role of the ink roller in the printing process is mainly to transfer ink. Generally, the ink roller has three forms: ink feeding, ink uniformity and ink channeling. Generally, the ink roller is required to have good ink absorption and ink transmission, the same as the introduction of

: the role of the ink roller in the printing process is mainly to transmit ink. Generally, the ink roller has three forms: ink feeding, ink uniformity and ink channeling. Generally, the ink roller is required to have good ink absorption and ink transmission, as well as resistance to organic solvents, gasoline, kerosene and other erosion characteristics. The daily maintenance of ink roller is directly related to the service life of ink roller (4) the viscosity of oil is too low

because the ink rollers are made of rubber relative to the mechanical data testing machine, they are prone to problems such as expansion and deformation, surface drying, aging and cracks, which affect the normal transmission of ink and bring a lot of inconvenience to the production of enterprises. Therefore, it is very important to use and maintain the ink roller correctly. This paper introduces several details of the correct use and maintenance of ink rollers

1. Prevent the ink roller from being compressed and deformed

when the machine is in normal operation, the pressure on the ink roller is comprehensive and uniform. At this time, there is generally no depression or bulge in any part. However, after the machine stops for a long time, the ink roller is pressed in a fixed position, which may cause local depression

therefore, when the ink roller is not used for a long time, it should be removed and placed on the ink roller rack, but it should not be placed on the ground or on the workbench to avoid pressure deformation

2. Don't let sundries and the ink shovel of the ink bucket scratch and crush the ink roller

in production, do not put all kinds of tools randomly; When adjusting the pressure between the ink roller and the printing plate, and the pressure between various ink rollers and the ink roller, use a steel sheet with a thickness gauge to measure, but try to reduce the number of insertion measurements to prevent scratching the ink roller

3. Often remove the oxidized conjunctiva of the ink roller after long use

in the process of offset printing, bright and fast drying resin ink is often used. This kind of ink is added with drying oil and dispersant, which will penetrate the surface of the ink roller for a long time, making the surface of the ink roller closed to form an oxidizing film, which will affect the effect of ink absorption and transmission

therefore, it is necessary to remove the conjunctival layer by manual or mechanical grinding, but it should be noted that the diameter of the ink roller cannot be changed too much, otherwise the ink transfer performance will be affected

4. Prevent ink roller deinking

in offset printing, water will be used. 5. There is ink emulsification phenomenon in recording experimental data, which forms a hydrophilic foundation on the smooth ink roller, so that the ink roller appears deinking phenomenon

the solution is to eradicate the emulsified ink, destroy the hydrophilic base of the deinked ink roller with gasoline, and clean the emulsified ink. Mix 5% sodium hydroxide aqueous solution with pumice powder to polish the surface of the ink roller, remove the hydrophilic base, and make the ink roller lipophilic

at the same time, we should also pay attention to the proportion method of offset printing bucket solution, control the pH value of bucket solution, use the minimum amount of water on the premise of not dirty version during printing, reduce the degree of emulsification, and do not add too much Arabic gum and surfactant

5. Store the ink roller in a dry and clean place without direct sunlight

avoid excessively wet or overheated environment. The ink roller should be set up flat, and the surface should not contact each other or other surfaces

6. Pay attention to cleaning the ink roller every day

after work or printing every day, carefully clean it to avoid the oxidation of the surface layer of the ink roller, ink pigment and resin to form a smooth and hard film. Generally, kerosene is used for cleaning first, and then gasoline is used for cleaning. Because kerosene is not easy to evaporate and gasoline is easy to evaporate, this can make the ink roller clean and dry, and protect the ink roller

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