System and method for drying anti-curl paper through steam introduction in different cylinders and layers after gluing

Abstract

The invention relates to a system and a method for drying anti-curl paper through steam introduction in different cylinders and layers after gluing, and belongs to the field of papermaking. The system comprises: a drying mechanism, and the drying mechanism comprises a first surface drying mechanism and a second surface drying mechanism; and the first surface drying mechanism and the second surface drying mechanism are respectively arranged on the first surface side and the second surface side of the paper from the surface gluing machine for drying. The method comprises the following steps: enabling glued paper to pass through the first surface drying mechanism and the second surface drying mechanism of the system for drying anti-curl paper through steam introduction in different cylinders and layers after gluing, and respectively and sequentially drying two surfaces of the paper; and according to the warping degree of the paper dried by the second surface drying mechanism, adjusting the drying parameters of the first surface drying mechanism and/or the second surface drying mechanism until the warping degree is within the standard range. The system and the method can solve the problem that the water absorption added value deviation of the front and back surfaces of the paper is too large in the drying process after papermaking gluing, so that the finished paper is curled, and use is affected.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a system and a process for drying anti-curl paper in separate cylinders and layered steaming after gluing. Background technique [0002] The flatness of paper is a very important indicator for printing, especially on high-speed printing presses. Most of the paper that is prone to curling is single-sided coated paper, such as single-sided coated paper, the upper and lower pages of carbonless copy paper, self-adhesive paper, etc. This is after the paper sheet is coated and dried on one side, the balance system of the combination of fibers and water molecules is destroyed, resulting in uneven distribution of water molecules inside the paper sheet, inconsistent internal stress, causing different shrinkage and expansion rates of each part and warping. Curl and wrinkle; if not adjusted, it will prevent the paper from running effectively in the subsequent processing steps. [0003] Among th...

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Problems solved by technology

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a system and process for drying the anti-curl paper in separate cylinders and layered steam drying after gluing, so as to solve the problem of paper normalization in the drying process after gluing in papermaking. The deviation of the water absorption increase value on the opposite side is too large, which causes curling of the finished paper and affects the use of the problem

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