A manufacturing method of a double-warp flat wire drying net and a double-warp flat wire drying net

Abstract

The invention discloses a double-warp flat wire drying net and a method for manufacturing the double-warp flat wire drying net. The double-warp flat wire drying net includes a machine layer and a paper-forming layer arranged on the machine layer; the paper-forming layer consists of The first warp thread and the first weft thread are interwoven; the machine layer is formed by the second warp thread and the second weft thread interweaving, and the minimum organizational unit is composed of 4 polyester monofilaments as warp threads and 6 polyester monofilaments as weft threads. The present invention increases the contact area with the paper by using the first warp and the second warp, so that the paper has a good paper-making effect, no screen printing, minimal longitudinal extension, and long service life; the first weft and the second weft are used , one of which has a rectangular cross-section, which reduces the stagger between the upper and lower layers of the drying wire, has no internal wear, and improves wear resistance. At the same time, it runs under the maximum tension of the paper machine without stretching and retracting, and the stability is improved. Reinforced for longer service life.

Description

technical field [0001] The invention relates to a cadre of a paper machine, in particular to a method for manufacturing a double-warp flat wire drying net and a double-warp flat wire drying net. Background technique [0002] The drying wire for papermaking is an important dehydrating material in the drying section of the paper machine. Its main function is to remove excess moisture in the paper sheet. It needs to remove more than 50% of the moisture in the paper sheet at the dry end. At the same time, the drying wire can also improve the quality of the paper. . [0003] With the rapid development of the paper industry, the speed of the paper machine is getting faster and faster, the width is getting wider and wider, the requirements for paper quality are constantly improving, and the requirements for paper drying nets are getting higher and higher, especially in terms of paper surface quality and stability. and service life etc. [0004] The existing drying wires for paper...

AI Technical Summary

Problems solved by technology

The traditional round wire drying wire has a small contact area with the paper, and screen printing is easily formed on the paper, resulting in unqualified paper quality. At the same time, the traditional round wire drying wire has poor structural stability, poor hydrolysis resistance, and short service life, which cannot meet the needs of papermaking development. Require

Although the drying net of one warp system and two weft systems adopts monofilaments with a rectangular cross section, which increases the contact area with the paper, but because it is a warp system, the flatness of the paper layer is poor, which affects the quality of the paper. surface quality, while the two weft systems are round yarns, poor stability, short service life, unable to meet the requirements of high-speed paper machines

Two kinds of warp system and one kind of weft system drying net, although the two kinds of warp system use monofilament with rectangular cross section, which increases the contact area with the paper and reduces the screen printing, but one kind of weft system, and The circular monofilament structure has poor stability, is easy to elongate and deform, and has a short service life, making it difficult to meet the requirements of high-speed and wide-width paper machines.

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