In order to avoid the curling problem during the printing process of the walkway screen printing silicone, you can start from the following aspects:
1. Fabric selection and pretreatment
Fabric selection:
Choose fabrics suitable for screen printing silicone, such as nylon, Lycra and other difficult-to-bond fabrics, which need to be pretreated with special treatment agents.
Avoid using fabrics that are easy to curl, such as some knitted fabrics or fabrics with excessive elasticity.
Fabric pretreatment:
Wash and dry the fabric thoroughly to remove impurities such as grease and dust on the surface.
Use a special fabric treatment agent to prime the fabric to enhance the adhesion between the fabric and the silicone.
2. Printing process optimization
Adjust the scraper pressure:
According to the thickness and hardness of the fabric, adjust the scraper pressure to ensure that the silicone can be evenly and stably attached to the fabric.
Avoid excessive scraper pressure causing the edge of the fabric to be squeezed and rolled up.
Control the viscosity of the silicone:
Use a suitable silicone diluent to adjust the viscosity of the silicone to make it suitable for the printing requirements of the walkway screen printer.
Too high or too low viscosity may lead to poor printing results and even curling.
Optimize printing speed:
According to the characteristics of the printing equipment and fabric, adjust the printing speed to ensure that the silicone can fully wet the fabric surface and evenly cure.
3. Equipment adjustment and maintenance
Adjust the height of the workbench:
Ensure that the height of the workbench is moderate so that the contact surface of the fabric and the silicone printing plate fits tightly to avoid gaps during the printing process that cause curling.
Maintain printing equipment:
Regularly maintain and service the printing equipment to ensure its accuracy and stability.
Check and replace worn parts such as scrapers, printing plates, etc. to ensure printing quality.
4. Environmental factor control
Control temperature and humidity:
During the printing process, keep the temperature and humidity in the workshop stable to avoid unstable fabric size or poor curing of silicone due to environmental changes.
Keep air circulation:
Ensure good air circulation in the workshop to avoid adverse effects of humid or stuffy environments on printing results.
5. Subsequent processing and inspection
Post-printing processing:
After printing, the fabric is properly post-processed, such as baking, shaping, etc., to enhance the adhesion between the silicone and the fabric and reduce the curling phenomenon.
Quality inspection:
The quality of the printed fabric is inspected to promptly discover and deal with quality problems such as curling.
In summary, avoiding the curling problem of the silicone printing on the platform requires comprehensive consideration from multiple aspects such as fabric selection and pretreatment, printing process optimization, equipment adjustment and maintenance, environmental factor control, and subsequent processing and inspection. By taking these measures, the printing quality can be significantly improved and the occurrence of curling can be reduced.