Established in 2001, Dongguan Haichang Hardware & Rubber Co., Ltd. is a professional manufacturer of industrial rubber rollers and printing machinery rubber rollers. With years of experience, the company has built a solid reputation by leveraging strong technical capabilities, advanced machinery, scientific management, and a commitment to quality and precision. This approach has helped the company steadily expand its market share and gain the trust and satisfaction of customers worldwide.
The company specializes in producing a wide range of rubber rollers, 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 products are known for their excellent performance, including resistance to corrosion, acids, alkalis, wear, oils, tearing, high temperatures, water, static, and fouling. They are designed to last long and deliver reliable results in various printing applications such as color printing, carton printing, and plastic bag printing.
Dongguan Haichang Hardware & Rubber Co., Ltd. operates with the principle of "customer first, quality first," striving to provide professional services and thoughtful support. The company’s operating policy emphasizes reputation and sincere service, ensuring that every customer receives the best possible experience. By maintaining high-quality standards, using advanced equipment, and offering timely and efficient service, the company continues to grow and improve.
Common Issues with Rubber Rollers in Printing
Rubber rollers play a crucial role in the printing process, and they are typically made from natural rubber, nitrile rubber, silicone rubber, or polyurethane rubber. High-end models often use polyurethane glue for better performance. However, during operation, these rollers may encounter issues like surface crystallization, calcification, scratches, numbness, ink emulsification, premature cracking, and aging.
One of the main causes of these problems is improper cleaning and maintenance. Over time, residues from ink, water, and paper can accumulate on the roller surface, blocking the capillary pores and forming a hard, crystal-like layer that affects ink and water transfer. To prevent this, it's recommended to clean the roller with a mild citric acid solution after each use, which helps dissolve calcium impurities and keep the surface clean.
Ink emulsification is another common issue, especially when there's an imbalance between ink and water. This can lead to a hydrophilic layer forming on the roller, causing the ink to separate. The solution involves removing the emulsified ink, washing the roller with gasoline, and then using a mixture of 5% sodium hydroxide and pumice powder to polish the surface. Maintaining proper ink and water balance is essential to avoid this problem.
Scratches on the roller surface are also frequent due to the soft nature of rubber. Hard objects, such as paper clips or plate edges, can cause damage during high-speed operation. To prevent this, ensure that the printing plates are properly secured and regularly maintained. If the roller becomes too worn or damaged, it should be replaced to maintain print quality.
To extend the life of the rubber roller and maintain consistent print quality, it's important to avoid overusing dry oil, as excessive amounts can cause ink to dry on the surface. Proper cleaning agents should be used to remove all impurities thoroughly. Additionally, keeping the workshop at an optimal temperature and ensuring the dampening system works efficiently will help dissipate heat and reduce the risk of aging. Poor bearing performance can also contribute to friction and damage, so regular maintenance is necessary.
Ozone generated by large motors can accelerate rubber degradation, so it's advisable to store rubber rollers away from such environments. By following these guidelines, users can significantly improve the longevity and performance of their printing rubber rollers.
Source: Http://news.chinawj.com.cn
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