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Polished non-marking papermaking felt and its preparation method

A paper-making felt and weaving technology, applied in the field of felt and its preparation, can solve the problems affecting the dehydration efficiency of paper sheets, uneven dehydration of paper sheets, and insufficient surface smoothness, etc., and achieve high dehydration efficiency, low cost, and simple steps Effect

Active Publication Date: 2016-05-18
JIANGSU JINNI ENGINEERED FABRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process causes the felt to form an uneven surface, commonly known as needle puncture marks. On the one hand, this uneven surface is easy to reflect the paper defect that forms blanket marks on the paper. On the other hand, due to the uneven surface, it is different from the paper When the pages enter the nip together, different pressures are formed on the surface of the paper, causing uneven dehydration of the paper.
At present, the modification of the surface of papermaking felts adopts the method of thermal trimming, that is, sweeping the surface of the felt with heat radiation or fire wire, so that the surface of the felt is smooth, but the surface smoothness of this modified felt is not enough, and the surface of the felt will be hardened. Affects the efficiency of paper dehydration

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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  • Polished non-marking papermaking felt and its preparation method
  • Polished non-marking papermaking felt and its preparation method
  • Polished non-marking papermaking felt and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the polished non-marking papermaking felt includes a base cloth layer, a front fiber layer 1, and a back fiber layer 4. The front side of the base cloth layer is planted with a front fiber layer by acupuncture, and the back side of the base cloth layer is planted by acupuncture. There is a reverse fiber layer, the base fabric layer includes the upper base fabric layer 2 and the lower base fabric layer 3, the upper base fabric layer 2 and the lower base fabric layer 3 are directly stacked together, the front fiber layer is planted on the surface of the upper base fabric layer, the reverse side The fiber layer is planted on the surface of the lower base cloth layer, and the side of the front fiber layer away from the base cloth layer is a smooth surface after polishing. Among them, the upper base fabric layer 2 is woven by warp and weft, the warp is made of nylon 4 strands, the weft is made of nylon 6 monofilament, the lower base layer 3 is wove...

Embodiment 2

[0024] see Figure 2-3 , the preparation method of the polishing non-marking papermaking felt, the steps comprising:

[0025] a. Weaving: Weaving the gray fabric of the base layer;

[0026] b. Inlaying: Inlay the two ends of the gray cloth of the base cloth layer together, so that the gray cloth of the base cloth layer with ends becomes an endless ring-shaped gray cloth of the base cloth layer;

[0027] c. Flocking: the base cloth layer gray cloth is installed on the flocking machine, and chemical staple fibers are laid on both sides of the base cloth layer gray cloth to obtain a papermaking blanket. The chemical staple fibers are nylon 6 staple fibers with a fineness between 6D-40D;

[0028] d. Shaping: heat-setting the paper-making felt;

[0029] e. Surface grinding treatment: tension the shaped papermaking felt 5 between the hot oil roller 6 and the tension roller 7 of the papermaking felt shaping machine, with the side of the front fiber layer facing away from the base c...

Embodiment 3

[0031] This embodiment is consistent with the steps of Embodiment 2, the difference being that the speed ratio between the rotor 9 and the papermaking felt 5 is 80.

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

The invention discloses a polished non-marking paper-making felt, which comprises a base cloth layer, a front fiber layer and a back fiber layer. There is a reverse fiber layer, which is characterized in that: the side of the front fiber layer away from the base fabric layer is a smooth surface after polishing. Also provided is a preparation method for the polished non-marking papermaking felt. In the non-marking papermaking felt of the present invention, the uneven surface of the papermaking felt is smoothed by a grinding device. The method for modifying the surface of the felt is simple in steps and low in cost, and can be hardened after the papermaking felt is heated by a hot oil roller. The surface is removed, and the obtained polished non-marking papermaking felt is not easy to form felt marks on the surface of the paper sheet during use, and the dehydration efficiency of the paper sheet is improved, and the quality of the paper sheet is improved.

Description

technical field [0001] The invention relates to a felt used in the press section of a paper machine and a preparation method thereof, in particular to a finger-grinding traceless paper-making felt. Background technique [0002] There is a process in the production process of paper-making blankets—acupuncture flocking. This process is to needle the carded fibers onto the base fabric by needle punching to make a semi-finished blanket. The equipment used for needle punching is called needle punching. Cashmere machine, in which the needles are arranged according to a certain rule. During the acupuncture process, the needles with barbs move up and down to bring the fibers on the surface of the blanket into the inside of the blanket, so that the fiber nets are intertwined with each other and combined with the base fabric in the form of rivets. . This process causes the felt to form an uneven surface, commonly known as needle puncture marks. On the one hand, this uneven surface is...

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 Patents(China)
IPC IPC(8): D21F7/08
Inventor 陆平陈平姜华叶平
Owner JIANGSU JINNI ENGINEERED FABRIC CO LTD