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Tips for daily use of stone roller, learn quickly!
1. The printing rubber roller mainly transmits ink on the offset printing machine. Therefore, when cleaning the stone rubber roller daily, it is essential to clean it thoroughly; otherwise, it will cause a smooth and hard film to form on the surface layer of the printing rubber roller due to oxidation with pigments and resins, affecting ink transfer. If it is not cleaned regularly, the surface of the printing rubber roller will become uneven over time, making it difficult to use. Therefore, when stopping the machine, the printing rubber roller should be cleaned and stored properly for future use.
2. In offset printing operations, the emulsification of ink caused by "too much water and too much ink" creates a hydrophilic base on the smooth printing rubber roller, leading to ink removal. The solution is to scrape off the emulsified ink, clean the ink-removing rubber roller with gasoline, and polish it with a 5% sodium hydroxide aqueous solution mixed with pumice powder. At the same time, the metal rollers (or hard rollers) should also be treated accordingly. Hard rollers can also be polished with fine water sand while being sprayed with water, taking care not to stay fixed in the same position, as this may damage the printing rubber roller. The fundamental solution is to control the pH value of the water tank liquid and maintain a good water-ink balance.
3. If the printing rubber roller has been used for too long and has aged, combined with the erosion of chemical agents, it may cause the rubber to shed "grains." Such printing rubber rollers are best not to be used again, as they severely affect the quality of the printed products.
4. To ensure that production and printing quality are not affected, there must be spare ink rollers, but do not store too many to avoid aging. The storage environment for printing rubber rollers should be the same as that for rubber blankets. Additionally, the printing rubber rollers should be placed straight at the shaft neck, and their surfaces should not touch each other or other items to prevent deformation.
5. Printing rubber rollers should not be stored near large electric motors or generators. The large amount of ozone produced by these devices can cause the surface of the printing rubber rollers to age and crack.
6. In cold weather, if the ink does not apply evenly, auxiliary materials can be added to the ink. It is prohibited to use infrared heaters or similar devices to bake the ink rubber rollers to prevent oxidation.
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Guangzhou Feiyue New Material Co., Ltd
national free advice hotline:
Address: No. 3, Industrial Road, Sanjiang Tianqiao Industrial Park, Shitan Town, Zengcheng District, Guangzhou
Fax: 020-32163051
Website: www.fyrubber.com.cn
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