Fabric used for filtering and paper making

Abstract

The invention discloses a fabric used for filtering and paper making, the structure of which comprises a group of surface warps, a group of surface wefts, a group of bottom warps, a group of bottom wefts and a group of three-dimensional compound yarns, wherein two adjacent three-dimensional compound yarns can form a pair and are interleaved with yarns of a surface layer and yarns of a bottom layer; each pair consists of a first three-dimensional compound yarn and a second three-dimensional compound yarn; and a single three-dimensional compound yarn can also be interleaved with yarns of the surface layer and yarns of the bottom layer; each three-dimensional compound yarn comprises an interleaving part of the forming surface layer and an interleaving part of the contact bottom layer, wherein the interleaving part of the forming surface layer is one part of a fiber support; in a basic circulation organization, the interleaving parts of yarns of the contact bottom layer of the three-dimensional compound yarns are positioned below the yarns of the forming surface layer, and penetrate the part below at least one yarn of the contact bottom layer; the three-dimensional compound yarn further comprises an MD three-dimensional compound yarn and a CMD three-dimensional compound yarn, wherein the MD three-dimensional compound yarn is interleaved with the surface wefts and the bottom wefts in the MD direction, and the CMD three-dimensional compound yarn is interleaved with the surface warps and the bottom warps in the CMD direction; in a basic circulation organization, the interleaving parts of the forming surface layers of the MD three-dimensional compound yarns in the MD direction of the forming surface layer and the surface warps form an interleaving path of first number; and the interleaving parts of the contact bottom layers of the MD three-dimensional compound yarns in MD direction of the contact bottom layer and the bottom warps form an interleaving path of second number.

Description

Invention field [0001] The invention relates to fabrics for filtration and papermaking, which are called forming nets in the papermaking industry. Background technique [0002] The application of multi-layer fabrics in the filtration and papermaking industries is very common. For example, in the papermaking industry, pulp is turned into paper through a series of equipment and processes. First, the pulp is filtered to form a wet paper web, and then it is passed through The transfer device enters the press area. After the wet paper web passes through the press area, it is transported to the drying area. The moisture in the paper web is further removed in the drying area to meet the processing and packaging requirements of the subsequent processes. The present invention relates to the paper industry. It is a filter forming fabric used to form a wet paper web after filtering the pulp, that is, a forming wire. [0003] In the description of this patent, general terms used in the textil...

AI Technical Summary

Problems solved by technology

The fine mesh and thin thickness of the fabric usually require the warp and weft of the fabric to be small in diameter, which has a negative impact on the wear resistance of the contact layer, and at the same time, the fineness of the warp also reduces the strength of the fabric in the MD direction

[0017] In order to solve the above problems and improve the performance of the fabric, a multi-layer fabric has been designed, so that the paper surface layer of the fabric has fine mesh and thin thickness, which is beneficial to the forming and drying of the paper, and the diameter of the weft thread that contacts the bottom layer is increased to improve the fabric. For example, multi-layer fabrics have been designed, using 2 sets of paper forming surface CMD direction yarns, 1 set of machine side CMD direction yarns and 1 set of MD yarns to form a paper surface layer with finer meshes and Durable machine side plies, which are often referred to as double-ply fabrics; also form faces and durable machine using 2 sets of paper forming face yarns, 2 sets of machine side yarns and 1 set of stitching yarns to form a finer mesh 侧面层;其通常被称为三层织物,97182244.2、97182245.X、01804768.8、02141980.9、02800379.9、200510076510.8、200710100644.8和美国5881764、5967195、6123116、6145550、6745797、7243687、2004082465、200701577987、03810199公开的多层 Fabrics, these fabrics provide a very fine mesh into the paper surface layer, but from another aspect, the water drainage performance of the fabric is reduced at a higher yarn density and the abrasion resistance of the fabric is reduced, the surface layer and the bottom layer Weaknesses in bonding fastness

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