The colloid used for polyurethane rubber rollers has sufficient surface viscosity to ensure that the rubber rollers have good ink transfer and inking properties during the printing process, and their good ink-friendly properties can ensure high-quality printing.When using and selecting polyurethane rubber rollers, if you do not pay attention to maintenance or do not know how to choose the method, the phenomenon of degumming of polyurethane rubber rollers will occur.Today, let's analyze the factors that affect the degumming of polyurethane rubber rollers.:
1.Adhesive selection;
2.Treatment of iron core;
3.Influence of mold and core temperature;
4.Mold design and mold requirements;
5.Influence of synthesis process;
6.The influence of the pouring process.
Therefore, during the transportation and storage of polyurethane rubber rollers, they should avoid direct sunlight, rain and snow, and impact under pressure. Contact with acids, alkalis, greases and organic solvents is prohibited, and they should be 2 m away from the heat source.And store (-10°c-40°c) in a cool and ventilated room with a relative humidity below 85.Do not approach a heat source or be exposed to cold air; the rubber layer of the rubber roller shall not be pressed.When storing, rotate 180 degrees every half month.The rubber parts should be wrapped in coated kraft paper or plastic film, and then packed with blankets, etc., do not put it naked to avoid light.
The rubber part should be wrapped in coated kraft paper or plastic film, and then packed with blankets, etc. Do not put it naked to avoid light. Be sure to use a spacer to support the roller journal, and do not support the rubber part.
During storage, in order to prevent deformation of the rubber structure, the roller body should be rotated regularly (it is advisable to rotate once in half a month), and do not use rubber rollers taken from cold places, especially in cold winter.If you use a rubber roller that has just been brought from the warehouse, the rubber is in danger of breaking.
When the polyurethane rubber roller starts to run, it should be gradually and evenly pressurized. For long-term storage, it is best to grind it slightly before use.
If the surface of the rubber roller is wrinkled or cracked during use, it should be removed in time and re-polished for use. When the polyurethane rubber roller stops running, it should not be subjected to pressure.
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