KR100465257B1 - Dust-resistant fabric - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to dust-free textile papers with improved dust collection efficiency and antistatic properties, and more particularly, to dust-free textile papers suitable for work in a clean room. The present invention is a conductive yarn having a single yarn fineness of 30 denier or less so that the conductive yarn having conductivity having an electrical resistance of 1.0 × 10 ⁸ 도전성 / cm or less has a weight ratio of 0.4 to 1.2 wt% / in ² per unit area of the fabric. Weaving ordinary yarns or primary yarns of 1.0 denier or less from each other, or weaving yarns twisted to 600T / M or less after air entanglement, but the non-conductive yarns or primary yarns are 98.8-99.9% wt% / per unit area of the fabric. Dust-free fabrics, characterized in that to have a weight ratio of ² , the dust-free fabrics according to the present invention to change the material yarn to a microfiber, but excellent ventilation and collecting and collecting efficiency under the same density as conventional products It is possible to manufacture fabrics that are comfortable to wear, and also to use a conductive yarn used for preventing static electricity. By weaving, the false twist will have the effect to improve the quality of the weaving efficiency and fabric.

Description

Dust-resistant fabric paper {Dust-resistant fabric}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to dust-free textile papers with improved dust collection efficiency and antistatic properties, and more particularly, to dust-free textile papers suitable for work in a clean room. In the prior art, dust-free clothing worn at work for the purpose of reducing dust or preventing occurrence thereof is widely used in various fields such as semiconductors, precision machines, optics, food, medicine, and hospitals.

In particular, in the semiconductor manufacturing field, as the degree of integration of semiconductor devices increases every year, the production of one gigabyte is expected in the near future in the future of 256 megabytes. In the clean rooms that manufacture highly semiconductors, cleanliness is required for each level of directness. To maintain the clean room high cleanness, dust generated from workers working in clean rooms is required. And dust must be prevented.

Dust generated by the worker can be classified into dust generated from the outside of the worker wearing and dust generated from dust leaking from the human body and the inside of the worker outside.

In order to prevent dust generated from the outside of the pollutant as described above, it is preferable to use woven paper woven from synthetic fiber filament yarn rather than dust-free woven yarn, and dust generated in the human body and inside of the worker is permeated outside. In order to prevent this, it is generally preferable to use a high density method, a calendering method, a coating method, or the like, or to use these methods selectively in parallel.

In practice, the cleanliness is not coated until class 100 level, high-density fabric is used, and in the case of high-clean dust-free materials of class 10 or less, the high-density fabric is coated or laminated. have.

In this case, since high density fabrics usually use yarns of 2-3 deniers of single yarn fineness, the feel and fit of the fabrics are remarkably poor, and when the coating is applied for high-cleaning dust of class 10 or less, adjacent fibers There is a problem that the coating is poor due to the voids in the liver.

In addition, Japanese Patent Laid-Open No. 2001-248035 discloses that a fabric made of a composite material of a sheath type having a softening point at which a core component has a lower softening point than a super component is used as a heating roller at a lower temperature than a super component. There is disclosed a method of improving the trapping efficiency of dust by narrowing the spacing between the fibers by calendering or heat-setting the core component by heat treatment using a heating plate and then deforming the cross sections of the fibers flat. Since the sheath-type composite fiber cannot be produced in a general spinning facility, a dedicated facility is required, and since the calendering is required for the flattening of the sheath-type composite yarn, manufacturing cost increases due to its processing cost.

In addition, in the case of dust-free composed of three layers as in Japanese Patent Laid-Open No. 11-189944, the inner layer in contact with the human body is made of a knitted fabric capable of collecting dust of 0.01 to 0.1 µm in size. Because it is controlled by a super absorbent polyurethane resin film attached to the upper part, there is no need to actually form the knitted fabric in the inner layer, and since the elasticity of dust-free is determined by the high-density fabric of the outer layer, it is possible to use a stretchable knitted fabric in the inner layer. The fit does not improve at all.

In addition, Japanese Patent No. 2825582 discloses a method of using horn sum yarns having a single fiber denier of less than 1.0 denier as a warp yarn and a single fiber denier having a tamm yarn of 1.0 to 3.0 denier. The quality control of the blended yarn is very difficult, and the weaving workability is poor due to the non-uniform blended yarn.

An object of the present invention is to solve the conventional drawbacks as described above, and due to the corrector generated by the friction of the fiber can be attached to the dust contaminate the clean room that requires high cleanliness or thereby can suppress the occurrence of quality defects It is to provide a dust-free forge with excellent dust-proof property, excellent conductivity and excellent dust collection efficiency.

1 is an air permeability measuring device used in the present invention.

<Explanation of symbols for main parts of drawing>

1 Sample (Limited textile paper) 2: Evaluation pressure gauge (Pressure input)

3: Measurement result display board

The present inventors can improve the above-mentioned problems by improving the material yarn and the weaving conditions of the existing dust-free textile paper, and completed the present invention.

In the present invention, the electrical resistance is 1.0 × 10 ⁸ Ω / ㎝ or less, the conductive yarn having a single yarn fineness of not more than 30 denier at the 0.4 to 1.2wt% / in ² level based on the weight ratio per unit area of the fabric excellent in conductivity Could be prepared.

The conductive material used in the present invention is BASF's 20de / 1f product and KANEBO's 22dtex

Use / 6f (B31Z Type). If the Saga ?? challenged basis weight ratio of 0.4wt% / in ² or less of the fabric used, the conductivity becomes poor, when 1.2wt% / in ² or more, through to the conductive fabric is excellent, the challenge's usage of the fabric There is a problem that the increase in the manufacturing cost of the fabric.

Preferably, the weight ratio per unit area of the conductive yarn is in a level of 0.7 to 1.0 wt% / in ² .

In the present invention, the conductive yarn used has fine fineness and filament number of 6 or 1, and when used alone, the weaving workability is very poor. Use twisted yarns with twists of / M or less.

At this time, if the number of years of use is more than 600 T / M, a pinhole is generated between the conductive yarns twisted in the fabric state and the adjacent general yarns, causing a problem of reducing the collection efficiency of dust.

Training after the air entanglement of ordinary yarns or primary yarns and conductive yarns is most preferable in terms of weaving workability and dust collection efficiency.

The general yarn used in the present invention has a single yarn fineness of less than 1.0 denier FDY, SDY, HOY

Or DTY. In this case, when single yarn fineness yarns of 1.0 denier or more are used, pin holes are easily generated between the conductive yarns and the general yarns, thereby causing a problem of increased air permeability.

Typically, the greater the air permeability of the fabric, the lower the dust collection efficiency. Therefore, in the case of dust-free fabrics, the smaller the air permeability is better

When the density of the warp and the weft is increased to improve the dust collection efficiency of the fabric, there is a problem that the touch becomes rough, and the dust-free wear is poor. In the present invention, the electrical resistance is 1.0 × 10.⁸0.4 ~ 1.2wt% / in per unit area of fabric of conductive yarn having conductivity of Ω / cm or less²General yarn or non-conductive yarn having a weight ratio of 98.8 to 99.6% wt% / in per unit area of the fabric²To have a weight ratio of As a result, it is possible to manufacture a dust-free garment having excellent feel and fit with a breathability of 150 l / m 2 / sec or less.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail based on an Example and a comparative example.

Evaluation of the fabric in the Examples and Comparative Examples was made by the following method.

(1) Antistatic:

After washing the fabric five times, it was evaluated by the JIS L 1094 friction voltage measurement method.

-○: less than 1.5㎸

△: 1.5㎸ or more and less than 2.5㎸

-×: 2.5㎸ or more

(2) Air Permeability:

TEXTEST Co.'s breathability meter FX 3300

Measured.

(3) wearing comfort (wearing)

-○: Good touch and excellent drape

-△: level of conventional lining paper (1/2 TWILL),

-×: Poor feel and fit than conventional lining paper.

Example 1

SDY 75de / 72f is used as warp and weft yarn for general yarn, and 20de / 1f with 0.5 × 10 ⁶ Ω / cm of electric resistance of BASF is mixed with the original yarn 75de / 24f, and then twisted to 400T / M. It was arranged at intervals of 0.5 cm in the warp and weft directions.

The woven fabric was 3/2 twill, weaved with a warp density of 193 pieces / in and a weft density of 122 pieces / in, and then processed in the order of ordinary refining, dyeing, and drying. Table 1 shows the results of evaluating the functionality of the finished fabric.

Example 2

Weaving and processing were conducted in the same manner as in Example 1 except that the conductive yarn was used "22 dtex / 6f (B31Z TYPE)" manufactured by KANEBO (Japan).

Table 1 shows the results of evaluating the functionality of the finished fabric.

Example 3

The finished fabric of Example 1 was coated with a non-porous type polyurethane resin of polyester and polyether based with a float knife coating. It was coated so as to.

The results of the evaluation of the functionality of the coated fabrics are shown in Table 1.

Example 4

SDY 75de / 144f is used as warp yarn and weft yarn for general yarn, and 20de / 1f with 0.5 × 10 ⁶ Ω / cm of electric resistance of BASF is mixed with the original yarn 75de / 24f, and then twisted to 400T / M. And it was arranged at intervals of 0.5 cm in the weft direction.

The fabric was a 3/2 twill weave with a warp density of 193 bones / in and a phase ml density of 122 bones / in and processed in the order of normal refining, dyeing and drying. Table 1 shows the results of evaluating the functionality of the finished fabric.

Comparative Example 1

Weaving was done using SDY 75de / 36f as warp and weft yarn as general yarn. The fabric was made of 3/2 twill, weaved with a density of 193 bones / in and a weft density of 122 bones / in, and then processed in the order of ordinary refining, dyeing and drying. Table 1 shows the results of evaluating the functionality of the finished fabric.

Comparative Example 2

SDY 75de / 36f is used as warp and weft yarn for general yarn, 20de / 1f with 0.5 × 10 ⁶ Ω / cm of electric resistance of BASF is mixed with the original yarn 75de / 24f, and then burned at 400T / M. It was arranged at 2.0 cm intervals in the warp and weft directions. The fabric was made of 3/2 twill, weaved with a density of 193 pieces / in and a weft density of 122 pieces / in, and then processed in the order of ordinary refining, dyeing and drying. Table 1 shows the results of evaluating the functionality of the finished fabric.

Comparative Example 3

The warp yarn used SDY 75de / 36f and the weft yarn used SDY 100de / 48f. 20de / 1f having an electric resistance of 0.5 × 10 ⁶ Pa / cm was mixed with the original yarn 75de / 24f, and then twisted at 400T / M and arranged at intervals of 0.5 cm in the warp and weft directions.

The fabric was made of 2/1 twill, weaved with a density of 193 bones / in and a weft yarn of 96 bones / in, and then processed in the order of ordinary refining, dyeing and drying. Table 1 shows the results of evaluating the functionality of the finished fabric.

Comparative Example 4

The warp yarn used SDY 75de / 36f and the weft yarn used SDY 100de / 48f. 20de / 1f having a BASF electric resistance of 0.5x10 ⁶ Pa / cm was mixed with the original yarn 75de / 24f, and then twisted at 800T / M and arranged at intervals of 0.5 cm in the inclined direction. The fabric was made of 2/1 twill, and the warp density was 193 / in. And the weft density was 96./in. Table 1 shows the results of evaluating the functionality of the finished fabric.

TABLE 1

Item Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Breed (de / f) slope 75/72 75/72 75/72 75/144 75/36 75/36 75/36 75/36 Weft 75/72 75/72 75/72 75/144 75/36 75/36 100/48 100/48 Density (bone / in) slope 193 193 193 193 193 193 193 193 Weft 122 122 122 122 122 122 96 96 Conductor Yarn Array (㎜) slope 5 5 5 5 0 20 5 5 Weft 5 5 5 5 0 20 5 0 Coating none none has exist none none none none none Antistatic ○ ○ ○ ○ × × ○ △ Breathability (ℓ / ㎡ / sec) 25.3 21.5 7.3 16.5 32 35 161 183 Comfort ○ ○ ○ ○ △ △ × ×

According to the present invention, by changing the material yarn used in the dust-free fabric to microfiber, it is possible to manufacture a fabric having a low air permeability, high dusting and collection efficiency, and excellent wear comfort at the same density as the existing product In addition, it is possible to improve the weaving efficiency and the quality of the fabric by twisting and weaving the conductive yarn used for preventing static electricity after the air blending or air blending with ordinary yarn or original yarn.

Claims (3)

A conductive yarn having a single yarn fineness of 30 denier or less and a general yarn having a single yarn fineness of 1.0 denier or less so that the conductive yarn having conductivity having an electrical resistance of 1.0 × 10 ⁸ μs / cm or less has a weight ratio of 0.4 to 1.2 wt% / in ² per unit area of the fabric. Alternatively, weaving the yarns with each other, or weaved with yarns twisted to 600T / M or less after airflow, the non-conductive yarns or non-conductive yarns weight ratio of 98.8 ~ 99.6% wt% / in ² per unit area of the fabric Dust-free fabric, characterized in that to have a. The fabric of claim 1, wherein the general yarn is woven using FDY, SDY, HOY or DTY yarn. The fabric of claim 1, wherein the fabric is coated or laminated so that the air permeability of the fabric is 150 l / m 2 / sec or less.