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Back-up blades are an essential component in the printing process, providing stability and support to the doctor blade. By reinforcing flatness, rigidity, and flexibility, they help the doctor blade adapt to press conditions, reducing deformation and wear while ensuring consistent ink removal. This results in improved print quality and extended blade lifespan. In addition to structural support, back-up blades apply uniform pressure along the doctor blade, optimizing ink metering and transfer efficiency. Their high hardness and straightness help maintain a stable printing process, minimizing defects and reducing maintenance needs.
The specifications listed above are standard sizes, but custom options are available upon request.
Back-up blades are primarily made from carbon steel, with variations depending on the carbon content:
Our back-up blades are manufactured using high-quality carbon steel, ensuring durability, precision, and stable performance in gravure and flexographic printing processes.
A back-up blade, also known as a blade support, helps maintain the stability and positioning of the doctor blade. By ensuring that the doctor blade edge remains at a consistent angle with the printing plate, it helps achieve precise ink metering and uniform ink removal. To optimize performance, the back-up blade is typically 2-5mm narrower than the doctor blade.
Using a back-up blade enhances the rigidity and flexibility of the doctor blade, preventing excessive bending or uneven pressure distribution. This results in smoother ink transfer, reduced blade wear, and consistent print quality. Additionally, it helps extend the lifespan of the doctor blade by minimizing direct contact pressure, reducing the frequency of blade replacements.
