There are many reasons for the stratify of screen printing silicone. Here are some possible reasons and corresponding solutions:
Cause Analysis
Improper temperature and pressure:
During the process of screen printing silicone, if the temperature is too high or the pressure is too high, it may cause the silicone to stratify.
Silicone raw material problems:
The quality of silicone raw materials directly affects its processing performance and the quality of the finished product. If there are quality problems with the raw materials, such as too many impurities and insufficient purity, it may cause the silicone to stratify during the screen printing process.
Dust during screen printing:
During the screen printing process, if there is dust on the surface of the silicone or on the screen printing equipment, it may affect the bonding between the silicone and the ink, resulting in stratify.
Ink problems:
Insufficient flow performance or viscosity of the ink may also affect the screen printing effect and cause the silicone to stratify.
Improper operation:
Improper operation such as excessive screen printing speed and unbalanced scraper force may also cause bubbles or stratify on the surface of the silicone.
Solutions
Adjust temperature and pressure:
According to the characteristics of silicone and screen printing requirements, reasonably adjust the temperature and pressure to avoid delamination caused by excessively high pressure.
Choose high-quality silicone raw materials:
Buy silicone raw materials from well-known brands, such as Dow Corning, Wacker, Anysil etc., to ensure the quality of the raw materials.
Keep clean:
Before screen printing, ensure the cleanliness of the silicone surface and screen printing equipment to avoid dust affecting the screen printing effect.
Choose the right ink:
Choose ink with good flow performance and moderate viscosity to ensure the screen printing effect.
Standardized operation:
Operate according to the screen printing operating procedures to avoid improper operations such as excessive speed and unbalanced scraper force.
In summary, the main reasons for the stratify of screen printing silicone include improper temperature and pressure, silicone raw material problems, dust and ink problems during the screen printing process, and improper operation. By reasonably adjusting the temperature and pressure, selecting high-quality silicone raw materials, keeping clean, selecting suitable inks, and standardizing operations, the occurrence of silicone stratify problems can be effectively avoided.