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Wet paper conveyance belt

A technology for conveyor belts and wet paper webs, applied in the field of wet paper web conveyor belts, can solve problems such as uncertain dimensions of wet paper web conveyor belts, and achieve the effect of reducing the increase in weft size

Inactive Publication Date: 2009-10-21
ICHIKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a part of the water contained in the wet paper web is absorbed by the water-absorbent fiber body (for example, rayon fiber) of the layer on the side of the wet paper web, the fiber body expands so that the size of the wet paper web transfer belt becomes insignificant. Sure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Wet paper conveyance belt
  • Wet paper conveyance belt
  • Wet paper conveyance belt

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0105] 1. Base fabric 33:

[0106] ·The upper fabric (first fabric 34) has a 1 / 1 plain weave structure (warp yarn 42 composed of nylon multifilament yarn and weft yarn 36 composed of PET single yarn), and has 200g / m 2 Unit weight.

[0107] The lower fabric (second fabric 35) has a warp double-layer structure (warp yarn 42 composed of nylon monofilament spun yarn and weft yarn 36 composed of nylon monofilament spun yarn), and has 400g / m 2 Unit weight.

[0108] 2. Cotton layer:

[0109] The batt layer 38 on the wet paper web side is formed of rayon fibers of the water-absorbent fibrous body 30 by a needle punching method, and has 600 g / m 2 Unit weight. The batting layer 40 on the machine side is formed of nylon fibers by needle punching, and has 250 g / m 2 Unit weight.

[0110] 3. Pouring of polymer elastomer 39:

[0111] The wet paper web batt layer of the needled felt is impregnated with 500g / m 2 Of polyurethane resin.

[0112] 4. The size change caused by the experimental device 2...

example 2

[0117] 1. Base fabric 33a:

[0118] ·The upper fabric (first fabric 34) has a warp double-layer structure (a warp composed of nylon monofilament yarns and a weft composed of nylon monofilament yarns), and has 400g / m 2 Unit weight.

[0119] The lower fabric (the second fabric 35) has a warp three-layer structure (a warp composed of nylon monofilament spun yarn and a weft composed of PET single yarn), and has 600g / m 2 Unit weight.

[0120] 2. Cotton batting layer: the same as Example 1 of the invention.

[0121] 3. Pouring of high polymer elastomer 39: the same as Example 1 of the invention.

[0122] 4. Dimensional changes caused by the experimental device:

[0123] ·Dimensional changes after the experiment: moving direction (extended by 1.2%), weft direction (extended by 0.6%)

example 3

[0125] 1. Base fabric 33b:

[0126] ·The upper fabric (first fabric 34) has a 1 / 1 plain weave structure (warp made of nylon multifilament yarn and weft made of PET single yarn), and has 200g / m 2 Unit weight.

[0127] The lower fabric (the second fabric 35) has a warp three-layer structure (a warp composed of nylon monofilament spun yarn and a weft composed of PET single yarn), and has 600g / m 2 Unit weight.

[0128] 2. Cotton batting layer: the same as Example 1 of the invention.

[0129] 3. Pouring of high polymer elastomer 39: the same as in Example 1 of the invention.

[0130] 4. Dimensional changes caused by the experimental device:

[0131] · Dimensional changes after the experiment: moving direction (extended by 1.2%), weft direction (extended by 0.4%)

[0132] (Comparative example 1)

[0133] 1. Base fabric:

[0134] ·The upper fabric (the fabric on the wet paper side) has a 1 / 1 plain weave structure (warp made of nylon multifilament yarn and weft made of nylon single yarn),...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

A wet paper conveyance belt (1) comprises a wet paper side layer (31) containing hydrophilic fibers (30), and a machine side layer (32). A basic cloth (33) provided in the belt is composed by laminating a first woven cloth (34) arranged on the wet paper (W) side, and a second woven cloth (35) arranged on the press roll (10) side. A part of the hydrophilic fibers (30) is exposed to the surface (37) of the wet paper side layer (31). The weft (36) of the first woven cloth (34) and the second woven cloth (35) is a yarn of low water absorption coefficient. When the hydrophilic fibers (30) are formed in the wet paper side layer (31) of the belt (1) by needle punch, the dimensional extension of the belt width due to water absorbing action of the hydrophilic fibers (30) can be suppressed.

Description

Technical field [0001] The present invention relates to a wet paper web transfer belt for high-speed transfer of wet paper webs in a closed-draw-type paper machine. Background technique [0002] A paper machine for dewatering paper materials includes a wire part, a press part, and a drier part. The wire section, press section and drying section are arranged in a designated order along the direction in which the wet paper web is conveyed. [0003] Some paper machines are paper machines of the type that transfer wet paper webs in open draws. The open-draw paper machine does not use belts to support the wet paper web. As a result, the wet paper web tends to break in the area where it is transferred from one part to another. Therefore, it is difficult to run the open-draw paper machine at a higher speed. [0004] In recent years, paper machines of the type used to transport wet paper webs in a closed thread have become popular in this field. The closed-drawing paper machine has a bel...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F7/08D03D11/00D03D1/00D21F3/00
CPCD21F7/086D21F7/083Y10S162/90Y10T442/3504Y10T442/3756Y10T442/3764Y10T442/3813
Inventor 泽田英井上健二
Owner ICHIKAWA ELECTRIC CO LTD
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