RU2448206C2 - Filter fabric - Google Patents

Abstract

FIELD: textiles, paper.

SUBSTANCE: combination yarn of Arselon-C and para-amide of Rusar-P type is used as threads of both systems, and tissue density of warp and weft is 324 and 172 threads per 10 cm, respectively, and air permeability is of 100 dm³/m²s.

EFFECT: provision of cleaning of process gases and industrial air.

1 cl

Description

The invention relates to technical fabrics intended for the purification of gases, mainly air, which can be used in industrial cleaning plants, used, in particular, in places with a high degree of pollution of the gaseous medium by suspended particles, as well as for the manufacture of bag filters intended for cleaning technological gases and industrial air.

Filtration of dusty industrial gases and suction air in fabric filters is a modern technical solution to achieve effective dust collection at relatively moderate capital and operating costs.

The development of the filtration technique is mainly directed in two ways: the creation of regeneration methods for filter materials that allow working at increased speed while maintaining dust collection efficiency, and the development of new types of filter materials that can reduce hydraulic resistance, increase gas apparatus performance and increase the life of filter elements .

Known filtered fabric made of warp and weft threads, representing a twisted polyester yarn of the same linear density. This fabric is intended for the purification of process gases and industrial air (GOST 20714-75. Publishing house of standards. - 1987).

The disadvantage of this tissue is the rapid destruction under the influence of aggressive media at elevated temperatures, i.e. short service life.

Known filter fabric made by twill weaving of the main heat-resistant complex threads and weft heat-resistant threads, which are twisted polyester yarn of the same linear density (RU 95110242 A1, 11.27.96, RU 95110241 A1, 05.27.97).

These fabrics are designed to filter gases, but do not provide fine purification of process gases and industrial air.

Known twill weave fabric from a mixture of heat-resistant synthetic fiber and oxidized polyacrylonitrile fiber, in which at least one type of fiber from the following polymers is used as heat-resistant synthetic fiber: meta-aramide, para-aramid, metapararamide with benzimidazole rings in the main chain, meta-aramidoimide, polyparaphenylene 1,3,4-oxadiazole (RU 2310701 C1, 11/20/2007).

The manufacture of this fabric is a very time-consuming multi-stage process, fabricated fabric is used mainly for the production of protective clothing.

Closest to the claimed invention is a fabric made by interweaving the warp and weft threads, characterized in that the warp and weft threads are made of twisted yarn of Arselon twisted yarn with a linear density of 18.5 × 2-29.0 × 2 tex, while the density of the threads in the fabric on 10 cm 260-400 on the basis and 200-250 on the weft, surface density 250-330 g / m ² (RU 17540 U1, 10.23.2000).

The disadvantages of this fabric are low breaking load, significant elongation of the fabric on the base when used in a gas environment with a temperature of 250 ° C, aging of Arselon fiber and abrasion of the fabric.

The technical result of the present invention is to create a filter fabric with a minimum hood during operation, reduced abrasion and increased tensile loads with minimal use of expensive aramid raw materials.

To achieve a technical result, a twill weave filter fabric from warp and weft yarns is proposed, characterized in that both yarns from Arselon-C and Rusar-R brand paraamide are used as the yarns of both systems, and the density of the warp and weft fabric is 324 and 172 threads per 10 cm, the corresponding breathability is 100 dm ³ / m ² s.

The fabric is produced at textile enterprises that process chemical and synthetic fibers without restructuring the process.

Comparative characteristics of the inventive filter fabric in comparison with the prototype are presented in table 1.

As can be seen from the data presented in table 1, with the same surface density, the inventive filter fabric has an increase in tensile loads on the base, which increases its abrasion resistance, a decrease in elongation at break in the weft and greater breathability.

The use of this invention expands the range of fabrics used in the form of bag filters for the purification of process gases and industrial air.

The use of arselone fiber along with Rusar-R brand aramid fiber in the fabric can reduce the cost of the fabric due to the minimal use of aramid raw materials, since textile aramid fibers produced on an industrial scale in the amount of several tens of thousands of tons per year are very expensive materials.

Table 1 Name of indicator Prototype The inventive fabric l. Raw Material Composition Arselon-C 100% Arselon-S + Paraamide brand Rusar-R 2. Width of fabric, cm 160 ± 2.0 160 ± 2.0 3. Surface density, g / m ² 358 ± 12 360 ± 12 four. Density (threads per 10 cm) the basis 330 324 weft 166 172 5. Breaking load (strip 25 × 200), N the basis 1929 2053.6 weft 949 2344.6 6. Elongation at break,% the basis 79 88 weft 50,5 15,5 7. Breathability, dm ³ / m ² s, not less than 84 one hundred

Claims (1)

Filter fabric of twill weaving from warp and weft threads, characterized in that both yarns from Arselon-C and para-amide of the Rusar-R brand are used as the threads of both systems, and the density of the fabric on the basis and weft is 324 and 172 threads per 10 cm accordingly, and air permeability is 100 dm ³ / m ² · s.