Screen printing adhesive is an indispensable core supporting material in the screen printing process system. The broad definition of screen printing adhesive in the industry includes two core categories: one is the elastic scraping strip used to control the uniform transfer of ink during the printing process, and the other is the functional adhesive that can directly achieve graphic and precise coating through screen printing technology. The two play different core roles in the screen printing production process, jointly ensuring the accuracy, uniformity, and performance of the printed pattern and the final product.

As a printing execution component, silk screen scraping adhesive is an elastic strip that directly contacts the screen and pushes ink to transfer to the surface of the substrate through the mesh. Currently, most mainstream products use polyurethane as the core substrate, which is formed through special casting technology and has excellent wear resistance, solvent swelling resistance, and stable elastic performance.

The hardness of this type of adhesive is graded by Shore hardness, covering a wide range of 45 degrees to 95 degrees. Products with different hardness are suitable for mesh fabrics of different densities, inks of different viscosities, and substrate surfaces with different characteristics. Soft scraping adhesive is suitable for low viscosity inks and uneven rough substrates, and can better adhere to the surface contour under pressure, ensuring even ink transfer; Neutral adhesive is suitable for most conventional printing scenarios, and can accurately control the amount of ink passing through the screen, ensuring clear and sharp edges of the pattern; High hardness scraping glue can withstand higher printing pressure, adapt to high viscosity inks and high mesh precision screen printing, and print fine patterns with extremely fine lines and high precision.

The cross-sectional shape of this type of adhesive can be divided into various styles such as right angle, sharp angle, and circular arc. The single-layer structure is suitable for ordinary manual printing and semi-automatic printing equipment, while the multi-layer composite structure is suitable for high-speed fully automatic printing production lines, greatly improving printing efficiency and service life. It is widely used in almost all screen printing scenarios such as textile printing, ceramic paper printing, electronic circuit board production, packaging and advertising printing.