A cooling roller refers to a powder coating Chill Rolls that enters the cooling water through cooling water, known as a cooling roller. When rolling film or tape coating, in order to reduce the deformation caused by thermal material shrinkage when the finished product is rolled, the material is cooled by a powder coating Chill Rolls before rolling to reduce material deformation. The cooling roller is a type of roller located behind the drying unit of the roll paper, which can reduce the temperature of the roll paper to the curing temperature of the thermosetting ink. Non condensing cooling roller, also known as non condensing cooling roller. Improvements have been made on the basis of traditional cooling rolls to prevent condensation at both ends of the powder coating Chill Rolls due to low cooling water temperature and to prevent damage to hot materials.
The non exposed cooling roller adopts a unique structural design and advanced heat exchange technology, which can quickly transfer the heat absorbed by the working area to both ends, not only accelerating heat transfer, but also keeping the temperature difference (△ T) between the hot material and the surface of the powder coating Chill Rolls. Large distance, faster production speed, uniform roller temperature, and improved product quality. The temperature at both ends of the cooling roller is only slightly lower than the temperature in the working area, which can be maintained above the dew point temperature, eliminating the problem of condensation at both ends of the roller and greatly improving product quality.
Compared with traditional powder coating Chill Rolls, the cost of non condensing cooling rolls will inevitably increase due to their complex internal structure. However, the improved production efficiency and stable product quality brought by the new cold rolling roller cannot be used. This is measured by the difference in prices between the two powder coating Chill Rolls.
1. When cooling, the temperature difference (△ T) between the hot material and the roller surface is large, which accelerates the heat exchange rate, greatly improves production efficiency (usually 50-200%), and reduces costs;
2. The temperature in the non working area of the non exposed cooling roller is only slightly lower than that in the working area, ensuring that both ends of the roller are not exposed and completely eliminating the impact of condensation on product quality;
3. Due to the non condensation of the powder coating Chill Rolls, even if the cooling water temperature is very low, operators do not need to monitor the cooling water temperature and roll surface condensation, thereby reducing the requirements and workload for the cooling rolls.
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