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Industrial filter cloth, and production method and use thereof

A production method and filter cloth technology, applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve problems such as surface hairiness, low strength of nonwoven fabrics, large average pore size, etc., and achieve high interception accuracy and low production cost The effect of low cost and high production efficiency

Inactive Publication Date: 2016-04-06
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For example, Chinese patent CN101987266A discloses an industrial filter cloth made of polyphenylene sulfide short fibers or filaments. The filter cloth made of ether short fiber has not been calendered or coated, and the surface has more hairiness, which is easy to cause clogging and affect the filtering effect
[0004] Another example is the Chinese patent CN101618289A which discloses a non-woven filter cloth with polyphenylene sulfide fiber as raw material. Due to the low strength of the non-woven cloth and the large average pore size, it cannot meet the requirements of filtration when the filtration accuracy is high. Affect the filtering effect

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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  • Industrial filter cloth, and production method and use thereof

Examples

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Effect test

Embodiment 1

[0031] Using polyphenylene sulfide yarns with warp and weft deniers of 1772 dtex and twist of 240T / M to weave on a heavy arrow shaft loom to produce a plain weave fabric with a warp yarn density of 130 yarns / 10cm and a weft yarn density of 100 yarns / 10cm , and then the above-mentioned plain weave fabric is refined at a temperature of 90°C and a speed of 30m / min, then cylinder-dried at a temperature of 150°C, and finally dried at a temperature of 190°C, a pressure of 5MPa, and a speed of 5m / min. The PPS woven fabric was calendered to obtain a filter cloth with a coverage factor of 2459. The measured porosity of the filter cloth accounted for 88% of the pores with a pore diameter below 5 μm. The physical properties of the industrial filter cloth of the present invention are shown in Table 1.

Embodiment 2

[0033] The polyphenylene sulfide yarns with warp and weft yarn deniers of 1477dtex and twist of 360T / M are woven on a projectile loom to obtain a plain weave fabric with a warp density of 160 / 10cm and a weft density of 110 / 10cm. Refining the above-mentioned plain weave fabric at a temperature of 95°C and a speed of 40m / min, then performing cylinder drying at a temperature of 130°C, and finally drying the dried fabric at a temperature of 200°C, a pressure of 6MPa, and a speed of 6m / min The PPS woven fabric was calendered to obtain a filter cloth with a coverage factor of 2636, and the measured porosity of the filter cloth accounted for 93% of the pores with a diameter below 5 μm. The physical properties of the industrial filter cloth of the present invention are shown in Table 1.

Embodiment 3

[0035] The polyphenylene sulfide yarn with a warp and weft density of 1181dtex and a twist of 400T / M is used for weaving on a heavy arrow shaft loom to obtain a plain weave fabric with a warp density of 180 / 10cm and a weft density of 130 / 10cm , then the above-mentioned plain weave fabric is refined at a temperature of 98°C and a speed of 40m / min, then cylinder-dried at a temperature of 140°C, and finally dried at a temperature of 210°C, a pressure of 4MPa, and a speed of 5m / min. The final PPS woven fabric was calendered to obtain a filter cloth with a coverage factor of 2706. The porosity of the filter cloth was measured to account for 95% of the pores with a pore diameter below 5 μm. The physical properties of the industrial filter cloth of the present invention are shown in Table 1.

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Abstract

The invention discloses an industrial filter cloth, and a production method and a use thereof. The filter cloth is a woven fabric formed by polyphenylene sulfide yarns with the twist of 100-800T / M and the denier of 280-2000dtex, the cover coefficient of the filter cloth is 2000-3000, and the porosity of the filter cloth is characterized in that holes with the aperture of 5[mu]m or below account for 80% or above of all holes. The industrial filter cloth has the characteristics of high temperature resistance, acid and alkali corrosion resistance, also has the advantages of high interception precision, low production cost and high production efficiency, and can be applied in the liquid filtering fields, such as filtration of decolorants in the sodium benzoate production process, and fields of chemical engineering, medicines and water treatment.

Description

technical field [0001] The invention relates to an industrial filter cloth and its production method and use. Background technique [0002] With the progress of society and the development of industry, the requirements for liquid filtration technology in fields such as mining, chemical industry, food, and environmental protection are getting higher and higher, and the requirements for filter cloth are also getting higher and higher. As a widely used filter medium, filter cloth plays an important role in the process of filtration and separation, directly affecting the filtration effect. The material of the filter cloth plays a decisive role in the performance of the filter cloth. For example, the existing common material filter cloth (polyester cloth, polypropylene cloth, etc.) can no longer fully meet the use requirements of acid-base and high-temperature environments. In addition, in order to obtain a filter cloth with higher filtration accuracy, higher requirements are re...

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): B32B27/08D03D15/00D03D13/00D06B21/00B01D39/08D03D15/283D03D15/41
Inventor 张晓静
Owner TORAY FIBER RES INST(CHINA) CO LTD
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