When the picture prints on the site of dirt or dry ink, it should be on the screen for decontamination, stop the press after the screen frame lift, then some operators will be dipped in solvent, The lower side of the template, the sound of the entire printing workshop can hear, often stencil damage.
Silk screen printing machine in the production, always avoid the silk screen screen version of the screen for decontamination, but we often use silk screen machine screen printing different types of products, resulting in frequent cleaning of the dirt on the screen is not clean, the results Resulting in a waste, affecting the printing quality, shorten the stencil life. Xiaobian below for everyone to detail the screen printing screen dirt out of the method.
A really knowledgeable operator rarely goes hard to rub the stencil of the graphic print side, as he knows the clarity of the printed image wide text requires that all graphic edges keep a clear picture of the emulsion layer. Hard friction will damage the emulsion layer graphic interface, or even wipe the emulsion layer, leaving only the bare mesh.
In the printing of high-line number of color images, the ribbon below the emulsifier film is only 5-6um thick, the mesh itself, the diameter of the thread may be only 30um, can not withstand the force of friction. Therefore, the key to avoiding rough decontamination is to first prevent the stencil from being contaminated.
The main cause of the template pollution is improper ink control, resulting in dry ink to stay in the mesh. When using solvent-based inks or water-based inks, the reason is that the ink is too thin or too thick. Should be there