The problem of fiber shedding during the silk-screen silicone printing process may be caused by a variety of factors, including fabric quality, silicone selection, printing process, etc. Here are some specific solutions to help reduce or eliminate the phenomenon of fiber shedding:
1. Optimize fabric selection and pretreatment
Choose high-quality fabrics:
Choose textile fabrics with tight fiber structure, high strength and good wear resistance to reduce the possibility of fiber shedding.
Fabric pretreatment:
Wash and dry the fabric thoroughly to remove impurities such as oil, dust, etc. on the surface.
You can consider using antistatic agents or softeners to pretreat the fabric to reduce fiber shedding caused by static electricity.
2. Adjust the silicone formula and printing process
Choose the right silicone:
Choose a silk-screen silicone that matches the type and characteristics of the fabric. Make sure the silicone has sufficient adhesion and elasticity to adapt to the elasticity of the fabric.
Optimize the silicone formula:
Add an appropriate amount of thickener or tackifier to the silicone to increase the viscosity and adhesion of the silicone.
Adjust the dilution of the silica gel to ensure that the silica gel can be evenly and stably attached to the fabric during the printing process.
Control printing pressure:
Adjust the pressure setting of the printing machine to avoid excessive pressure causing the fiber to be pulled out.
Optimize printing speed:
Control the printing speed to ensure that the silica gel has enough time to dry and cure on the fabric, thereby reducing the possibility of fiber shedding.
3. Strengthen post-printing processing
Curing treatment:
After printing is completed, the fabric is fully cured. The curing temperature and time should be adjusted according to the type of silica gel and the characteristics of the fabric to ensure that the adhesion between the silica gel and the fabric is optimal.
Quality inspection:
Carry out quality inspection on the printed fabric to promptly detect and deal with the problem of fiber shedding.
4. Other precautions
Environmental control:
Maintain the temperature and humidity in the printing workshop to reduce the impact of environmental factors on the fiber state.
Equipment maintenance:
Regularly maintain and service the printing equipment to ensure that the equipment is in good working condition. In particular, the scraper and screen of the printing machine need to be kept clean and sharp to reduce damage to the fabric.
Operation specification:
Operators need to be familiar with the operation procedures of the printing process and equipment to ensure that they operate in accordance with the specifications. Avoid fiber shedding caused by improper operation.
In summary, solving the problem of fiber shedding during screen printing silicone printing requires multiple aspects, including optimizing fabric selection and pretreatment, adjusting silicone formula and printing process, strengthening post-printing processing, and paying attention to environmental control and equipment maintenance. Through comprehensive measures, the phenomenon of fiber shedding can be effectively reduced or eliminated, and the printing quality and product qualification rate can be improved.