Screen printing in the printing supplies - inkScreen printing in the printing supplies (ink):Advances in screen printing supplies, especially the development of functional inks, have not only benefited ordinary screen printing (such as the never-ending use of UV inks), but it has also l
Screen printing is the template with a pattern or pattern is attached to the screen printing. Screens are usually made of nylon, polyester, silk or metal mesh. When the substrate is placed directly under the screen with the template, the screen printing ink or coating is squeezed through the mesh in the middle of the screen under the squeegee and printed on the substrate (squeegee with manual and Automatic two). The stencil on the screen seals a portion of the screen aperture so that the paint can not pass through the screen, and only the image portion can pass through, so that only the image portion of the print has a footprint. In other words, screen printing is actually printing with ink through a printing plate.
Screen printing in the printing supplies (ink)
Advances in screen printing supplies, especially the development of functional inks, have not only benefited ordinary screen printing (such as the never-ending use of UV inks), but it has also led directly to screen printing technology and products High-tech. Screen printing features many, the most fundamental point is the adaptability of printing, people call it can not be printed in addition to air and water, in all different materials and different surface features on the special printing can be printed.
Metal packaging screen printing ink, generally including anti-corrosion ink, anti-plating ink, two liquid (two-component) reactive ink, thermosetting ink.
(1) screen printing ink supplies-resist ink
Use screen printing on the surface of metal packaging screen printing ink, to protect the parts do not need to be etched, and then by a special etching solution on the metal packaging surface chemical conversion, in order to achieve the required metal packaging surface markings, patterns. Currently in the production of metal signs the most widely used.
Anti-corrosion inks can be roughly pided into four categories: solvent-based resist ink, alkali-soluble resist ink, UV-resistant ink and infrared heat-curable anti-corrosion ink.
(2)screen printing ink supplies- anti-plating ink
Electroplating ink is mainly used in the metal packaging surface of the three-dimensional relief process, the screen Yinchao, revealing the relief pattern, by the deposition of electroplating, resulting in "three-dimensional relief" effect. This type of ink processing cap pattern is often used in metal-coated caps.
Anti-plating ink, in addition to the same nature and resistance to etching ink, should also consider the thixotropy of the ink should be appropriate, on the negative printing can not cause the spread of ink; Ink should not exist in the conductive material; Ink can not be dissolved into the plating solution.
(3) screen printing ink supplies-thermosetting ink
Drying and curing of screen printing inks, is the main screen printing ink varieties, can be used directly in the metal surface printing graphic information. In small quantities of tinplate printing cans, system cover, barrels and other production is often used.