Stickies control process in high wet strength paper making process

Abstract

The invention relates to the field of papermaking, in particular to a stickies control process in a process of producing high wet strength paper for daily use. The stickies control process comprises the following steps: selecting pulp, dispersing pulp, removing residues, milling, mixing, diluting, screening, shaping on a net, dehydrating and squeezing, drying and wrinkling. Pulp with low ash content is selected, the condition that stickies are produced by cohesion of resins and PAE wet strength agents is avoided, the long fiber proportion is increased, separating and brooming of fibers can be improved, partial wet strength is improved by improving the winding function of finished paper, and usage of the wet strength agents is reduced; moreover, according to a dry strength agent, the utilization efficiency of the wet strength agents can be improved, the dry strength agent has a temporary wet strength agent effect, has no adhesiveness in water and cannot deposit, the wet strength agent is efficiently utilized, a glyoxal polyacrylamide dry strength agent is coordinated with a PAE wet strength agent, the utilization effect of the wet strength agent can be improved due to mixed utilization, and the glyoxal polyacrylamide dry strength agent has no adhesiveness under a wet condition, so that the problem that the wet strength agent is adhered to a felt to cause stickies is solved.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a technology for controlling stickies in the process of producing high-humidity household paper. Background technique [0002] High-wet-strength household paper mainly relates to paper towels, kitchen paper, napkins, etc., and the wet strength of the high-wet-strength household paper is mainly in the range of 20-190 N / m. During the papermaking process, due to the high wet strength requirements, a large amount of PAE type wet strength agent is added to improve the wet strength, which makes the system easy to cause stickies to deposit on the net and felt. Once the deposition occurs, the paper will have holes or even break. paper etc. In the past, the resin in the system was controlled by adding a resin control agent, but it was difficult to control the sticky matter caused by adding a large amount of PAE wet strength agent. Once the sticky matter deposits, it has to be shut down, and th...

AI Technical Summary

Problems solved by technology

During the papermaking process, due to the high wet strength requirements, a large amount of PAE type wet strength agent is added to improve the wet strength, which makes the system easy to cause stickies to deposit on the net and felt. Once the deposition occurs, the paper will have holes or even break. paper and other issues

In the past, the resin in the system was controlled by adding a resin control agent, but it was difficult to control the sticky matter caused by adding a large amount of PAE wet strength agent. Once the sticky matter deposits, it has to be shut down, and the method of manual cleaning is used to reduce the Improve production efficiency and increase the labor volume of workers

[0003] The traditional spraying uses the filtrate filtered by white water. The filtrate contains a large number of fine fibers and tiny sticky particles. The blanket is easily left on the net blanket for the second time after spray cleaning. The cleaning effect of the filtrate temperature is about 40 degrees. additives are used to increase the dry strength of paper

[0004] Adding the traditional wet strength agent in the slurry mixing tank can increase the mixing efficiency, but a large amount of wet strength agent stays in the system for a long time, and it is easy to flocculate and accumulate into agglomerates, and it is easy to deposit on the mesh blanket after it is formed.