Drying Part of Paper Machine
Drying Part due to different types of paper machine has a different composition, generally can be divided into ordinary multi-dryer culture paper machine, multi-cylinder paper machine, double dryer paper machine, single dryer paper machine.
Tips about Drying Part of paper machine
Ordinary multi-dryer paper machine drying part generally consists by a number of dryer to take the upper and lower layers of horizontal arrangement, the dryer is covered with a drying wite, and the paper is heated and dried by the upper and lower dryer.
According to the different paper in the drying process of the shrinkage and drying function, the dryer is generally into a number of drive group (2 ~ 6). At this time because the paper in the dry, there will be vertical and horizontal contraction, the size of the shrinkage and paper varieties. At this time because the paper in the dry, there will be vertical and horizontal contraction, the size of the shrinkage is related to the variety of paper.
Usually the longitudinal shrinkage of paper is half of the lateral shrinkage. In order to allow the paper to shrink freely in the longitudinal direction and to ensure a higher strength index, the speed of the dryer must be reduced along the course of the paper to accommodate the need for shrinkage. Each drive group is equipped with one of the upper and lower felt.
Can appropriate to improve the difference between the two sides of the paper, reducing the operation and equipment costs. This approach also has its shortcomings, one is to reduce the drying efficiency, the second is easy to make the rope in the production and so off.