KR900003106B1 - Method for manufacturing a super high-density fabric - Google Patents

Abstract

A super high-density fabric is prepd. by the steps of: weaving a two- component separate draw-twisting mixing yarns comprising polyester and nylon; separating the yarn by treating in emulsion, at 40-60≰C, comprising a swelling agent, caustic soda, sodium carbonate and or ethylene glycol; then constricting by heating the treated yarns at 120-130≰C. Pref. the fineness of the separate mixing yarn is 50-100 denier. Pref the weaving density of the prepd. fabric is 80-150.

Description

Manufacturing method of ultra high density fabric

The present invention relates to a method for producing an ultra-high density fabric having excellent dust wiping properties, and more specifically, after weaving a high-density fabric by using a split bishrink blended yarn, two heteropolymers are used. The present invention relates to a method for producing an ultra-high density fabric suitable for a clean room or various lens wipes by treating with a swelling agent and a preparation to divide and shrink. Recently, with the rapid development of electronic semiconductors and pharmaceutical fields, the production sites have also been advanced and miniaturized. Therefore, the subsidiary materials required for the maintenance of such manufacturing facilities were conventionally class 1,000-10,000 level was sufficient, but since the development of megalem, etc., the related subsidiary materials also required a higher degree of cleanliness.

However, most of the cleanrooms and various kinds of lens wipes that have been put to practical use today have a high oscillation property, lack of absorbency, dust wiping, and the like, which cause a fatal damage in clean rooms requiring high cleanliness. The wipes currently in practical use include cotton cloth, synthetic fiber cloth, and nonwoven fabrics, and high density letters using split biaxial blended yarn.

However, cotton cloth, synthetic fiber cloth and nonwoven fabrics are not suitable for use as wipes because of their high oscillation properties and low dust wiping and absorption. In addition, in the case of high-density knitted fabrics, there are problems such as lowered form stability, large surface frictional resistance, lowered cutting and sealing properties, and cost increase due to the complexity of the process. That is, in the case of knitted wipes, the elasticity is large due to the specificity of the tissue itself, and the shape is changed by washing and friction, and there is a difficulty in cutting and sewing.

In addition, since the thickening increases after splitting and shrinking at high density, the performance is reduced in terms of wiping property and feel. In addition, if the shrinkage rate is reduced to reduce the degree of backing, the surface is smooth, and the wiping and absorbing performance is lowered. In case of calendering, satisfactory thickness is obtained, but there is a difficulty in the fabrication process due to the elasticity of the knitting itself. In addition, as a swelling agent, benzyl alcohol, β-phenol ethyl alcohol, phenol, and a small amount of emulsifiers are used together as a method of dividing and shrinking the split biaxial blended yarn, but the lack of splitting and shrinking performance, deterioration of feel and surfactant There are problems such as excessive foaming and difficulty washing with water. The inventors of the present invention while researching a method to solve the problems described above, there is no oscillation at all, it is excellent in dust wiping, absorbency, shape stability, while solving the problems that occur during split shrinkage and can be wiped with a simple process We have developed a method of making ultra high density fabrics for dogs. Hereinafter, the present invention will be described in detail.

The split bishrink mixed fiber used in the present invention has a large difference in dry heat and non-shrinkage ratio, and is a yarn prepared by complex spinning of heterogeneous polymers that can be separated by a swelling agent. The cross-sectional shape is radial to facilitate separation. Single component polymers have 4-9 segments and fineness is 50-100 denier.

The yarn is used to weave a high density of light and weft density of 80-150 bones / inch. At this time, since the weave is low in irregularities in the case of plain weave, lack of wiping properties, weaved into twill or changeable plain weave that can form bones, irregular yarn arrangement, yarn ejection, etc. Particularly, when the dough woven into such a tissue is divided and shrunk, the non-shrinkage rate is changed due to the characteristics of the fabric tissue.

When the woven dough is immersed in a liquid to which a swelling agent and a small amount of additives are added, the temperature is increased and rotated. The two components are separated by physical and chemical actions. In this case, a swelling agent used is a known benzyl alcohol, but a small amount of caustic soda, sodium carbonate and ethylene glycol is added thereto. Unlike the simple additives, polyamide is slightly dissolved, so that the fabric is formed by benzyl alcohol. Softens the fabric by preventing it from hardening. In addition, even a small amount of benzyl alcohol greatly improves the area shrinkage rate, and also eliminates the difficulties of work due to excessive foaming caused by adding emulsifiers to known benzyl alcohols, and the shortcoming of washing with water. . The most suitable concentration is benzyl alcohol 30-100g / 1, ethylene glycol 2-10g / 1, sodium carbonate 0.1-0.5g / 1, caustic soda 2-10g / 1 and the liquid ratio is about 10-30: 1 (composition liquid: fabric) to be.

After heating up the liquid of the above composition, the dough is added and divided, and the temperature is elevated to high temperature in the building. At this time, when the area shrinkage rate is 50% or less, the surface structure becomes dense and finely densified, which results in inferior physical properties such as dust wiping and absorbency.

The area shrinkage effect is better as the difference between the temperature at the time of dividing and the temperature at the time of shrinkage is good, but after dividing 20-40 minutes at 40-60 ° C, the temperature is increased to 120-130 ° C and soaked for 20-40 minutes to shrink.

In the above process, it is preferable to use a facility which can give physical momentum by rotation and does not extend tension in the warp and weft directions. In addition, it is preferable to perform an antistatic treatment mainly containing a nonionic compound after division, shrinkage, and washing with water. Dry and set the fabric manufactured in the above manner, cut to a certain size using an ultrasonic cutter or a thermal cutter, and clean the packaging in a clean room.

Wipes manufactured by the above method have no oscillation properties, and have excellent physical properties such as dust wiping, water absorption and shape stability. Hereinafter, the present invention will be described in detail with reference to the following Examples.

Example 1

Weaved split biaxial blended yarn with a composition ratio of 65:35 of polyester and nylon was used as light and weft yarns and weaved into 110 high density twill (2/2), which was 40 g / 1 of benzyl alcohol and 6 g of ethylene glycol. / 1, sodium carbonate 0.3g / 1, caustic soda 5g / 1, liquid ratio = 1: 20 (fabric: composition) into an emulsion zone, after 30 minutes at 50 ℃, the temperature was raised to 120 ℃ and then treated again for 30 minutes do. After hot and cold water after washing for 10 minutes in a nonionic antistatic agent (20% ^owf ) at room temperature, washed, dried and set.

Example 2

The same yarn as in Example 1 was used for light and weft yarns. Weaved 90% / inch of high density plain weave, benzyl alcohol 30g / 1, ethylene glycol 4g / 1, sodium carbonate 0.3g / 1, caustic soda 5g / 1, liquid ratio = 1: It is put into an emulsion zone of 30, and after 40 minutes of processing at 70 degreeC, it heats up to 120 degreeC, and processes for 40 minutes, and then washes, cold-waters, and antistatic treatment.

Comparative Example 1

A cotton yarn 20-ply was used and weaved into a plain weave with a light and stomach density of 70 × 50 bones / inch, followed by a wipe.

Comparative Example 2

Regular polyester was cut into a double structure having a letter density of 3,000 or more and the processed one was used as a wipe.

Comparative Example 3

The polyester was made into a spun-bond type sheet by a melt-blow method as a wipe.

Comparative Example 4

The same yarn as in Example 1 was cut into double interlock 32G, and then processed in the same manner as in Example 1.

Comparing the physical properties of the wipe prepared by the method as described above are as follows.

1. Absorbent

* Measuring method: JIS L 1079 method

2. Oscillation

* Method of measurement: Dust concentration generated when 90 sheets / minute hit with one piece of clean packing wipe (9 × 9 inch) in a clean room with 20cm rod.

3. Dust wipeability

* Measuring method: Place silica gel powder on glass plate, dissolve with organic solvent, cover with wipe, leave for 10 minutes, dry and observe surface by electron microscope.

4. Form Stability (Comparison of Fabric and Knitting)

5. Other

Claims (4)

A two-component split biaxial hybrid yarn made of polyester and nylon is woven at a high density and then treated at a temperature of 40 ° C.-60 ° C. in an emulsion zone composed of conventional swelling agent, caustic soda, sodium carbonate and ethylene glycol. And dividing, and then shrinking by raising the temperature to 120 ℃-130 ℃. The method of claim 1, wherein the fineness of the split biaxial intertwined yarns is 50-100 manor. The method of manufacturing an ultra high density fabric according to claim 1, wherein the weaving density is 80-150 stitches / inch. The method of manufacturing an ultra high density fabric according to claim 1, wherein the fabric of the fabric is twill or changeable weave.