The precautions for cleaning the screen for screen printing mainly include the following points:
1. Choose the right cleaning agent
The choice of cleaning agent is crucial. You should choose a cleaning agent that can effectively remove ink residue and is harmless to the screen.
Avoid using cleaning agents such as ordinary laundry detergent or dishwashing detergent that may damage the screen.
2. Correct cleaning steps
Before cleaning, the ink should be scraped from the image part of the screen to the bottom of the screen to reduce the difficulty of cleaning.
Use a damp sponge or soft cloth to gently scrub the surface of the screen, especially the image part, to ensure that the ink residue is completely removed.
During the cleaning process, apply the cleaning agent evenly on both sides of the screen and wipe it with a sponge or soft cloth.
After cleaning, rinse with clean water to ensure that there is no foam residue on the surface of the screen.
3. Protect employee health and safety
During the cleaning process, employees should wear necessary protective equipment, such as gloves, masks and protective glasses to prevent the cleaning agent from contacting the skin or eyes.
Ensure that the working environment is well ventilated to avoid harm to the human body caused by the volatile gas of the cleaning agent.
4. Drying and storage of screens
The cleaned screens should be placed in a dry, dust-free environment to dry, avoid direct sunlight or use a hair dryer to dry, to prevent deformation or dust contamination of the screens.
The dried screens should be properly stored to avoid physical damage or re-contamination.
5. Precautions for special industries
For some special industries, such as the circuit industry, since the printed materials may contain specific chemicals (such as sodium thiosulfate and silver complexes), specific detergents or alcohol are required for water washing and removal.
In these special industries, more attention should be paid to the selection and use of cleaning agents to ensure the cleaning effect of the screen and the normal operation of the equipment.
6. Other precautions
When cleaning the screen, avoid using hard tools or brushes that may scratch the screen.
After cleaning, check whether the screen is intact and intact. If damaged, replace it in time.
When the machine is shut down for a long time or the downtime is long, the screen should be cleaned before shutting down to prevent ink residue from clogging the mesh.
In summary, screen printing screen cleaning requires attention to the selection of cleaning agents, the standardization of cleaning steps, the protection of employee health and safety, the drying and storage of screens, and the special requirements of special industries. Only by strictly following the specifications can the cleaning effect of the screen and the normal operation of the equipment be ensured.