When printing spunbond fabric (also known as non-woven fabric or nonwoven fabric), multiple aspects need to be considered to ensure the printing effect and product quality. Here are some key precautions:

1. Preprocessing

Removing impurities and cleaning: Before printing, the spunbond fabric should be treated with removing impurities and oil stains on the surface to improve the smoothness of the fabric surface. This helps the printing ink to better penetrate and adhere to the fabric surface.

Wettability: Ensure that the spunbond fabric has good wettability so that the printing ink can be evenly distributed on the fabric surface. If necessary, wetting treatment can be carried out.

2. Selection and blending of printing pigments

Dye or pigment selection: Choose the appropriate dye or pigment based on the characteristics, uses, and desired printing effect of spunbond fabric. Ensure that the selected dye or pigment has good color fastness and environmental performance.

Color paste mixing: Reasonably mix printing color paste, including the ratio of dyes (or pigments), hygroscopic agents, cosolvents, etc. to the original paste. The viscosity of the color paste should be moderate to ensure that it can pass through the screen smoothly during printing, while also ensuring the precision and clarity of the printing.

3. Printing equipment and technology

Equipment selection: Choose suitable printing equipment based on production scale and printing requirements, such as flat screen printing machines, circular screen printing machines, etc. Ensure stable equipment performance and meet the requirements of printing accuracy.

Process control: Strictly control the printing process parameters, such as printing pressure, speed, temperature, etc. Ensure that the color paste can adhere evenly and stably to the fabric surface during the printing process, avoiding problems such as color difference and bleeding.

4. Post printing processing

Steaming, color development or fixation: necessary steaming, color development or fixation treatment is carried out according to the properties of the selected dye or pigment. Ensure that dyes or pigments can firmly adhere to fibers, improving the color fastness and durability of printed products.

Soap washing and water washing: Thoroughly perform soap washing and water washing treatment to remove floating colors and residues such as chemical agents and pastes in the color paste. Ensure the cleanliness and safety of printed products.

5. Quality inspection and control

Appearance inspection: Conduct a visual inspection of printed products to ensure that the printed patterns are clear, the colors are bright, and there are no defects.

Performance testing: Conduct necessary performance tests, such as color fastness testing (including wash resistance, friction resistance, light resistance, etc.), strength testing, etc. Ensure that printed products comply with relevant standards and customer requirements.

6. Environmental Protection and Safety

Environmental requirements: Strictly comply with environmental regulations and requirements during the production process, use environmentally friendly dyes and additives, and reduce the discharge of pollutants such as wastewater and exhaust gas.

Safe operation: Strengthen employee safety education and training, ensure that employees comply with safety regulations and operating procedures during the operation process, and prevent safety accidents from occurring.

In summary, when printing spunbond fabrics, attention should be paid to pre-treatment, selection and blending of printing pigments, control of printing equipment and processes, post printing treatment, quality inspection and control, as well as environmental protection and safety. By strictly controlling the process parameters and quality requirements of each link, the quality and stability of printed products can be ensured.