Wrinkling cutter and manufacturing method thereof

Abstract

The invention provides a wrinkling cutter and a manufacturing method thereof. The wrinkling cutter comprises a base. The top end face and the work face of the base are provided with wear-resistant coatings. The manufacturing method of the wrinkling cutter comprises the following steps that the wear-resistant coatings are formed on the top end face and the work face of the base, and the wrinkling cutter is obtained through grinding. The contact portion of the wrinkling cutter and a drying cylinder is very small and constant, the shape is stable, and the wrinkling cutter is of a strip-shaped structure with the width being just 0.15-0.40 mm, so that the paper surface wrinkle structure on paper basically has no change. By the adoption of the technical scheme, the linear pressure of a cutting edge of the wrinkling cutter is generally 2.5-3 N / mm, so that friction force between the wrinkling cutter and the drying cylinder is effectively reduced, resistance in the rotation process of the drying cylinder is reduced, and the purpose of saving energy is achieved. The wrinkling cutter integrates the advantages that the friction portion is constant in area and is provided with the high-wear-resistance coatings, the paper surface impacted portion has the high wear resistance and high impact resistance, and the service life is 30-60 times that of a common steel wrinkling cutter.

Description

technical field [0001] The invention relates to a corrugating knife and a preparation method thereof, in particular to a novel corrugating knife used for preparing household paper and a preparation method thereof. Background technique [0002] The creping knife is an important part in the process of producing tissue paper. The role in the production process is to peel the paper from the surface of the dryer, and at the same time apply the necessary pressure to the contacted paper surface to form a wrinkled structure on the paper surface. [0003] In order to meet the requirements of the wrinkling process, the wrinkling knife should have the following main properties: good wear resistance, suitable sharpness of the edge of the wrinkling knife, the contour geometry meets the performance requirements for paper strength, bulk thickness, etc., and the base of the wrinkling knife has Suitable rigidity and elasticity. [0004] The currently widely used corrugating knives are basi...

AI Technical Summary

Problems solved by technology

[0013] However, ceramic creping knives still have some defects: one is that, like steel creping knives, the wrinkle structure on the paper surface will change due to the gradual widening of the working surface in contact with the drying cylinder

When this change accumulates to a certain extent and exceeds the quality standard, it will cause the creping knife to fail.

Although the failure process of this ceramic wrinkling knife will be much longer than that of ordinary steel knives, the problem of paper wrinkle structure changes during use still exists, and the uniformity of paper wrinkle cannot be maintained.

[0014] The second major defect of ceramic corrugating knives is that ceramic corrugating knives, like steel knives, will increase the friction between the corrugating knives and the drying cylinder due to the increase in the width of the working angle, thereby increasing energy consumption and increasing Cost of production

[0015] The third defect of ceramic wrinkling knives is that the working edge is prone to such as Figure 4 The tiny irregular-shaped cracks shown ( Figure 4 It is only for illustration, the specific size shall be subject to the actual situation), resulting in vertical stripes on the paper surface

Generally, ceramic materials are brittle, and it is easy to cause the edge to crack during processing and use. During the wrinkling process of scraping the surface of the cylinder and peeling off the paper, if the crack is large, a line will be formed where the paper surface contacts the crack. Streaks will affect the quality of paper products. If it is serious, it will lead to the direct failure of the creping knife and shorten the life of the creping knife.

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