1. When the template is contaminated, when using the channel screen printing machine, the printing machine should be stopped after printing a set of printed sheets, and then a piece of blotting paper is input to make the screen contact with the blotting paper. Let the screen in the printing orientation, then wipe off the dirt on the stencil surface with a non-abrasive soft cloth with a screen cleaner. Don't use too much force, so the dirt will fall through the mesh. On the absorbent paper below, if necessary, repeat the cleaning of the mesh with a piece of absorbent paper. After the cleaning is completed, the stencil can be blown dry with a blower (call "cold air").
Second, when printing a high-color picture of the high-net line, the emulsifier film under the silk thread is only 5-6um thick, and the diameter of the mesh itself may be as long as 30um, and it cannot be rubbed hard. The key to preventing barbaric decontamination is to prevent the stencil from being contaminated first. The most common cause of stencil contamination is improper handling of the ink, causing dry ink to remain in the mesh. The situation of the ink should not change. When using UV-curable inks, every effort should be made to prevent the screen from being exposed to UV light and to prevent sunlight from shining.
3. When there is dirt or dry ink on the printed part of the picture, the screen should be decontaminated. After stopping the press, the frame will be lifted. At this time, some operators will rub the solvent with abrasive cloth. The lower side of the stencil, the sound is loud and can be heard throughout the printing shop, often the stencil is damaged. A real-time operator rarely violently rubs the stencil-printed surface because he knows that the clarity of the printed image requires that all edges of the image adhere to a clear emulsion layer graphic interface. Hard rubbing can damage the image interface of the emulsion layer, even rubbing off the emulsion layer, leaving only the naked mesh.
4. When cleaning the circular-press screen printing machine, because of the planning structure of the screen printing machine, it is not possible to wash the dirt on the absorbent paper like the general screen printing machine. Fortunately, because the printing speed is relatively fast, the ink is less likely to dry in the mesh. Sometimes the dirt under the template is removed. In this case, the dirt should be gently wiped off with a soft cloth. Do not use excessive force. In the production process, the above cleaning and decontamination methods should be used frequently to extend the service life of the stencil and screen printing machine and reduce the scrap rate.
Second, when printing a high-color picture of the high-net line, the emulsifier film under the silk thread is only 5-6um thick, and the diameter of the mesh itself may be as long as 30um, and it cannot be rubbed hard. The key to preventing barbaric decontamination is to prevent the stencil from being contaminated first. The most common cause of stencil contamination is improper handling of the ink, causing dry ink to remain in the mesh. The situation of the ink should not change. When using UV-curable inks, every effort should be made to prevent the screen from being exposed to UV light and to prevent sunlight from shining.
3. When there is dirt or dry ink on the printed part of the picture, the screen should be decontaminated. After stopping the press, the frame will be lifted. At this time, some operators will rub the solvent with abrasive cloth. The lower side of the stencil, the sound is loud and can be heard throughout the printing shop, often the stencil is damaged. A real-time operator rarely violently rubs the stencil-printed surface because he knows that the clarity of the printed image requires that all edges of the image adhere to a clear emulsion layer graphic interface. Hard rubbing can damage the image interface of the emulsion layer, even rubbing off the emulsion layer, leaving only the naked mesh.
4. When cleaning the circular-press screen printing machine, because of the planning structure of the screen printing machine, it is not possible to wash the dirt on the absorbent paper like the general screen printing machine. Fortunately, because the printing speed is relatively fast, the ink is less likely to dry in the mesh. Sometimes the dirt under the template is removed. In this case, the dirt should be gently wiped off with a soft cloth. Do not use excessive force. In the production process, the above cleaning and decontamination methods should be used frequently to extend the service life of the stencil and screen printing machine and reduce the scrap rate.
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