Liquid photosensitive resist inks and thermosetting electrophoretic paints are two types of ink commonly used in the production of fine etching signs, color metal prints, and metal handicrafts. After electrophoretic coloring, high-temperature baking is required to cure the paint film, and then the photosensitive film is removed with caustic soda water to obtain a finished product.
In the actual production process, the following problems are frequently encountered: After the photosensitive film is baked at a high temperature, either the photosensitive film is difficult to remove; or the photosensitive film is taken off together with the cured film of the electrophoretic paint, causing the product to be scrapped. Hangzhou Kewang Specialty Ink Co., Ltd. has recently introduced a new type of liquid photosensitive resist ink LPR-811. This is a new product developed specifically for thermosetting electrophoretic paints. Compared with general liquid photosensitive resist inks, it is unique in that it is : Photosensitive cured film after development, etching, electrophoretic paint and baked at 150-180 °C for 30-50min, you can easily use dilute alkali (3% ~ 5%) aqueous solution, remove the cured film, without affecting the electrophoretic paint The gloss and adhesion fastness. LPR-811 is a one-pack package and developed with a 1% aqueous solution of sodium carbonate. Product high sensitivity, good resistance to development. Designed for high-precision etching patterns on metal substrates such as copper, aluminum, iron, and stainless steel. LPR-811 photocurable film has excellent corrosion resistance to hydrochloric acid and other strong acids.
Source: China Screen Printing and Imaging Association
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