Precautions for Using Polyurethane Rollers
The colloid for polyurethane rollers has sufficient surface viscosity, which can ensure good ink transfer and ink holding performance during the printing process, and its good ink affinity can ensure high-quality printing. When it is used and selected, if you do not pay attention to maintenance or do not know how to choose it, it will cause the phenomenon of product degumming.
Therefore, during transportation and storage, polyurethane rollers should be protected from direct sunlight, rain and snow, pressure and impact, and should not be in contact with acids, alkalis, greases and organic solvents, and should be kept away from heat sources 2 meters away. And store (-10°c-40°c) in a cool and ventilated room with a relative humidity below 85. Do not approach heat sources or expose to cold air; product adhesive line must not be under pressure. When storing, it should be rotated 180 degrees every half month. The rubber parts should be wrapped with coated kraft paper or plastic film, and then packed with blankets, etc. Do not place them naked to avoid sunlight. The rubber parts should be wrapped with coated kraft paper or plastic film, and then packed with blankets, etc. Do not place them naked to avoid sunlight. Be sure to use a spacer to support the roller journal, and do not support the rubber part.
During storage, in order to avoid deformation of the rubber structure, the roller body should be rotated regularly (one half-month rotation is advisable). Do not use products taken from cold places, especially in cold winter. If you use the product just picked up from the warehouse, it is in danger of breaking. When the polyurethane rubber roller starts to operate, it should be gradually and evenly pressurized. For long-term storage products, it is better to grind it slightly before use. If there are wrinkles or cracks on the surface of the product during use, it should be removed and re-polished in time for use. When the product stops running, it must not be under pressure
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