Our company's rubber rollers are engineered with advanced formulas, high-quality materials, and cutting-edge technology. The product range includes ink rollers, oil-resistant rollers, water rollers, alcohol-water rollers, polishing rollers, laminating rollers, gravure rollers (copper rollers), offset rollers, and more. These rollers are designed to be resistant to corrosion, acid, alkali, wear, oil, tearing, high temperatures, moisture, static, and fouling. They offer excellent elasticity and durability, making them ideal for applications such as color printing, carton printing, and plastic bag printing.
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 team, advanced production equipment, and a commitment to quality and customer satisfaction, the company has steadily expanded its market presence and earned the trust of clients worldwide.
We adhere to the principle of "customer first, quality first," and our quality policy is "professional excellence and thoughtful service." Our business philosophy is "reputation-based and sincere service." We continuously strive to improve and provide timely, reliable solutions to meet our customers' needs. With a focus on quality, advanced equipment, professional design, and efficient service, we ensure that every customer receives the best possible support.
Printing rubber rollers come in two main types: hard and soft. They are used for embossing, ink adjustment, and ink transfer. However, like any mechanical component, they can encounter various issues during operation. Here are some common faults and their causes:
1. **Heat Aging**: Prolonged exposure to heat can accelerate desulfurization, causing the roller surface to become sticky, soft, or even cracked. At this stage, replacement is often necessary.
2. **Ink Drying and Colloid Damage**: If ink dries prematurely on the roller surface, it can form a dry film that cracks during rolling, leading to colloid detachment. This is often due to fast-drying inks, improper cleaning, or residual ink buildup over time.
3. **Surface Glazing**: The accumulation of organic and inorganic substances from ink binders and fountain solution can create a glossy layer on the roller, reducing its ink transfer efficiency.
4. **Crystallization on Surface**: Chemical compounds may crystallize on the roller surface, affecting performance.
5. **Swelling**: Improper use of cleaning agents can cause the colloid to swell. It's important to choose the right solvent—such as MEK, trichloroethylene, or acetone for swelling, and alcohol, kerosene, or roller cleaner for non-swelling.
6. **Circumferential Streaks**: These can result from crystallized compounds or dried ink scratching the roller surface. A specialized ink remover is needed to eliminate these streaks.
7. **Water Roller Contamination**: Excessive dampening solution or acidic conditions can lead to ink emulsification, which can damage the water roller and cause poor dampening. Regular cleaning and adjusting the solution composition are essential.
8. **Water Splashing at Ends**: This occurs when the length difference between the water roller and metering roller exceeds 0.5mm, or if the roller corners are not properly rounded.
By understanding and addressing these common issues, users can significantly extend the life of their printing rubber rollers and maintain consistent print quality. At Dongguan Haichang, we provide expert advice and high-quality products to help you achieve optimal results in your printing operations.
Source: http://news.chinawj.com.cn
Aluminum extrusion profiles are made into aluminum rods after aluminum ingots are melted and cast, and put into an extrusion press at a certain temperature. Under the action of strong pressure, aluminum profiles with a certain cross-section shape and size are extruded through a specific shape mold. Different alloy components have different properties. This manufacturing process gives aluminum extruded profiles a high degree of consistency and accuracy. Aluminum extruded profiles have the advantages of good corrosion, high quality, high weather resistance and strong recyclability. Classification by profile: There are a variety of different cross-section shapes, such as rectangle, circle, square and so on. Classification by alloy: common 6063, 6061 alloys, etc., different alloy components have different performance characteristics. In short, aluminum extruded profiles play an important role in many fields with its unique advantages, and with the continuous development and innovation of technology, its application prospects will be broader. An in-depth understanding of the characteristics and applications of aluminum extruded profiles helps us to make better use of this material and contribute to the development of various fields.
Aluminum Extruded Profile,Aluminum Window Frame Profiles,Aluminum Window Frame Extrusions,Extrusion Aluminum Profile
Guangdong Jihua Aluminium Co., LTD , https://www.jihua-alu.com