The rubber roller plays a crucial role in printing machinery, serving as an embossing roller, ink adjuster, and ink transfer device. Its primary function is to deliver water and ink to the printing plate. The choice of rubber material and the manufacturing process significantly influence the quality of the roller. As a result, the performance of these rollers directly impacts the quality, efficiency, and effectiveness of the printing process.
**Analysis of the Surface Structure of Dongguan Rubber Rollers**
Established in 2001, Dongguan Haichang Hardware & Rubber Co., Ltd. has become a leading manufacturer of industrial and printing machinery rubber rollers. With a strong technical foundation, advanced machinery, and a focus on quality and precision, the company has steadily expanded its market presence and earned high praise from customers.
Our rubber rollers are crafted with superior formulas, high-quality materials, and cutting-edge technology. We offer a wide range of products, including ink rollers, water rollers, alcohol-water rollers, polishing rollers, oil rollers, paper rollers, laminating rollers, film blowing rollers, gravure rollers (copper rollers), offset rollers, printing and dyeing rollers, circuit board acid-resistant and high-temperature rollers, shoe composite rollers, and more. These rollers are resistant to corrosion, acid, alkali, wear, and oil, while also offering excellent elasticity, durability, and resistance to tearing, high temperatures, water, static, and fouling. They are ideal for applications such as color printing, carton printing, and plastic bag printing.
The company's core values are "customer first, quality first," "professionalism and thoughtful service," and "reputation-based, sincere service." We continuously strive to improve our products and services, ensuring that every customer receives reliable, high-performance solutions backed by advanced equipment and professional design.
The rubber roller serves a key function in printing machinery, delivering ink and fountain solution to the printing plate. The material selection and production process have a direct impact on the roller’s quality, which in turn affects the overall print quality and efficiency.
The surface roughness of the rubber roller is a critical factor in determining how effectively it transfers ink and fountain solution. Proper surface roughness ensures accurate measurement of ink and water delivery, maintains ink balance, and stabilizes the ink transfer process. It also helps in evenly distributing the ink into a thin film and water film, ensuring smooth and continuous transfer. However, during the printing process, the roller often comes into contact with chemicals, leading to residue buildup on its surface. While some residues can be removed with water or solvents, others may remain trapped in the micro-pores of the rubber. Over time, this accumulation can cause the surface to lose porosity and become worn or glazed.
Some companies use cleaning agents with poor effectiveness or excessive residue, which can accelerate the glazing process. If left untreated, the glaze layer thickens, causing serious issues in the printing process. Once glazed, the roller’s surface area decreases, hardness increases, and elasticity reduces, leading to poor ink and fountain solution transfer. This results in printing difficulties, uneven ink density, slow drying, unstable ink balance, increased paper waste, and difficulty in cleaning.
To maintain optimal performance, the surface structure of the rubber roller must be carefully selected and properly maintained. For example, the surface roughness of an ink roller is typically between 6–20 μm, while a water roller used with an alcohol fountain solution should have a roughness of 4–10 μm. If higher water capacity is needed, the surface can be finely ground, resulting in a surface roughness of 2–6 μm for an alcohol-water roller. After selection, regular cleaning and maintenance are essential to preserve the surface structure and ensure long-term performance.
**Sources:**
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