Analysis of Common Faults and Causes of Printing Rubber Rollers
The rubber roller produced by our company has excellent formula, superior materials and advanced technology. The product includes: ink roller, oil resistant. Wireless Router,Network Router,Broadband Router,Computer Router Ebic Tools Limited , http://www.ebictools.com
Analysis of Common Faults and Causes of Printing Rubber Rollers
Established in 2001, Dongguan Haichang Hardware & Rubber Co., Ltd. is a professional manufacturer of various industrial rubber rollers and printing machinery rubber rollers. Over the years, relying on strong technical force, advanced mechanical equipment, scientific management mode and the spirit of pragmatism and refinement, with the aim of integrity and quality, the market share has been continuously expanded, and it has been well received by users.
The rubber roller produced by our company has excellent formula, superior materials and advanced technology. The product includes: ink roller, water roller, alcohol water roller, ink roller, polishing roller, oil roller, paper roller, laminating roller, film blowing roller, gravure roller (copper roller), offset roller, paper roller, Printing and dyeing roller, circuit board acid-resistant roller, circuit board high temperature roller, shoe composite roller, hardware, wood machinery and other rubber rollers, its performance: corrosion resistance, acid resistance, alkali resistance, wear resistance, oil resistance. It is resistant to tearing, high temperature, water, anti-static, anti-fouling, elastic and long-lasting. It can well meet the color printing, carton printing, plastic bag printing and printing and so on.
The company has always been "customer first, quality first" as its purpose, "professional to do better, service and thoughtful" as the company's quality policy, "reputation-based, service sincerity" as the operating policy. With this, we will continue to improve and make unremitting efforts. Adhering to quality, advanced equipment, professionally designed and timely service is our commitment to every customer.
There are two major categories of hard and soft rollers for printing machinery, as a rubber roller for embossing, ink adjustment, and ink transfer.
Common faults and causes of printing rubber rollers:
1. Heat aging will accelerate the desulfurization, resulting in heat aging, making the surface sticky, soft, and even cracked into orange. Only replace it at this time.
2. Colloidal off-chip ink is dried early in the process of transfer on the surface of the colloid. The dry film is degraded due to its ductility. During the rolling process, the surface of the colloid will be destroyed along with the crack of the ink film, causing the colloid to fall off. occur. The reason for the early drying of the ink is mainly because the desiccant is added to the ink, and the ink with faster ink drying (for example, POP ink for aluminum foil) is printed, and the ink roller is not cleaned as required, so that the ink is in use during long-term use. A dry knot occurred on the top.
During the processing of the roller, the temperature is too high, the surface is easy to carbonize, and the printing phenomenon will occur when printing is short.
Excessive printing pressure adjustment, when the machine is idling, if the idling protection measures are improper or not timely, it will accelerate the damage of the surface of the roller.
Solution: The replacement of the block can be replaced to solve the resulting printing failure.
3. Surface glazing During the printing process, the organic matter and inorganic matter in the binder in the ink, and the hydrophilic colloid in the fountain solution, the detached filler in the paper, the coating will form a layer of "bright film" on the surface of the ink roller. ", the surface of the ink roller is made vitrified, and the ink transfer performance is lowered.
4. Crystallization of compounds on the surface 5. Expansion: In addition to the cause of heat, the most important reason is the use of improper cleaning agents to cause the colloid to swell. Solution: Choose the appropriate cleaning agent. (often used to swell organic solvents: MEK methyl acetaldehyde, trichloroethylene, acetone, cyclomethane, banana water; non-swelling organic solvents: alcohol, kerosene, light oil, roller cleaner)
6. Circumferential streaks: In addition to the crystalline compound causing similar circumferential streaks, the dry ink on the hard ink roller will scratch the soft surface during operation to form a circumferential streak. At this point, the dead ink remover must be used to remove the dried ink.
7. The water bucket roller is stained with ink: the surface of the chrome roller can fully separate the ink after adsorbing the dampening solution, but the excessive dampening solution, the acidity of the dampening solution will increase the emulsification of the ink, and the emulsified ink will follow The return water path returns to the water fountain roller, and the ink on the water fountain roller will cause poor dampening and local water failure. The ink on the bucket roller must be removed in time. At the same time adjust the size of the dampening solution and its composition.
8. Splashing water on both ends of the water roller: During the printing process, water droplets are dropped on the printing surface of the printing plate at both ends of the water roller. The reason for this is as follows: the difference between the length of the water roller and the metering roller exceeds the allowable range, and the length difference It is larger than 0.5mm; the corner of the water bucket roller is well treated, and the roundness of the corner is greater than 0.5mm.
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