Regarding the introduction of transfer printing process control management, this article mainly introduces the following parts, including pad printing process, pad printing ink, ink selection and preparation, control of ink characteristics, control of printing environment, etc.
The pad printing process is introduced in six parts as follows:
Step 1: The first step is to fill the etched image area of the cliche with ink. The pad printing equipment can use the open ink tank shown in the figure, or the closed ink tank to prevent the solvent from volatilizing in the ink tank. At this point, it is necessary to ensure that the viscosity of the ink is low enough that it can be evenly scraped off the surface of the cliche and penetrate into the etched area at the same time.
Step 2: Use a squeegee to scrape off the ink on the surface of the stereotype, leaving only the ink in the engraved image area. The upper surface of the ink film exposed to the air has a certain viscosity due to the volatilization of the solvent.