Papermaking process of heavy basic weight paper for daily use

Abstract

The invention relates to the field of papermaking, and in particular relates to a papermaking process of heavy basic weight paper for daily use. The papermaking process comprises the following steps: pulp selection, pulp dispersing, slag removal, pulp grinding, pulp mixing, diluting, screening, shaping on a screen, dehydrating and squeezing, drying, wrinkling and rolling primarily. The papermaking process has the beneficial effects that by virtue of a high-viscosity water-resistance coating, namley polyamide-epichlorohydrin resin, paper can be adhered to a dryer smoothly when contacting the dryer, and the problems of paper break and the hidden hazard of halt, caused by the lack of paper web, can be avoided; by virtue of a low-degree wrinkling scraper of 5-12 degrees, the uniformity and the completeness of the coating can be kept, the probability of paper break, caused during a wrinkling process, is lowered, and the ratio of long fibers is increased; and with free beating and with addition of chemi-mechanical pulping, the breathability of paper can be enhanced.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a process for making high-quantitative household paper. Background technique [0002] Since the high basis weight tissue paper has a relatively high basis weight, the high basis weight tissue paper is a creped tissue paper of 25-45 g / ㎡. During the papermaking process, due to the high grammage, it is difficult to dehydrate the paper, which makes the coating of the paper with a large water content in the upper cylinder softened, and the coating is easily damaged by the scraper, resulting in uneven coating and paper breaks during the wrinkling process. The large amount of steam generated by the high-basic paper at the moment of contact with the drying cylinder is difficult to penetrate the paper and discharge, which makes the paper not easy to adhere to the drying cylinder, and causes paper breakage after being taken away by the felt. In severe cases, the pulp brought back by the felt Pu...

AI Technical Summary

Problems solved by technology

During the papermaking process, due to the high grammage, it is difficult to dehydrate the paper, so that the water content of the paper in the upper cylinder is relatively large, and the coating is softened, and the coating is easily damaged by the scraper, resulting in uneven coating and paper breakage during the wrinkling process.

The large amount of steam generated by the high-basic paper at the moment of contact with the drying cylinder is difficult to penetrate the paper and discharge, which makes the paper not easy to adhere to the drying cylinder, and causes paper breakage after being taken away by the felt. In severe cases, the pulp brought back by the felt Pulp jams in the forming section, causing downtime of the paper machine

[0003] In the past, the normal production paper weight of the technical paper machine was within 30g, and it was easy to cause the paper to be difficult to adhere to the drying cylinder, which caused paper breakage and shutdown problems