Dryer is driven by gears or driven by wool cloth, several drying cylinders form a group, and several groups of drying cylinders constitute the drying section. The linear speed of each group of drying cylinders can be adjusted separately to maintain a slight speed difference between each group of drying cylinders to compensate for the shrinkage of the paper during the drying process. The dryness of the paper out of the dryer section is generally about 92~94%. At the end of the dryer section, a cold cylinder is generally equipped to allow moisture to condense on the surface of the cold cylinder. Condensed water can moisten the surface of the paper to facilitate better surface smoothness in finishing. The drying cylinder diameter is the best with 1.5m. Single-sided glossy paper can obtain higher single-sided gloss by using a large-diameter dryer with a high hardness and high-finish cylinder surface. The diameter of the large-diameter dryer is generally 3~7.5m.
Dryer section of Paper machine
- Jan 18, 2021-
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