JPS61103428A - Wiping cloth - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a wiping cloth.

(Prior Art) Wiping cloths have been widely used as cleaning cloths, oil absorbing cloths, machine care cloths, lens cleaning, glass cleaning, household furniture cleaning, and the like. Many of them are fiber materials with good water absorption.
Cotton fibers have been widely used. In addition to cotton fibers, as described in Japanese Patent Application Laid-Open No. 11855-58147, there are materials using ultrafine fibers as the material.

The idea of using ultrafine fibers is to increase the fiber surface area within the fabric and increase the adsorption area by using ultrafine fibers.

However, in the case of using cotton fibers, the surface of the fabric is covered with fluff caused by short fibers, and this fluff causes hair growth, which may make it unusable depending on the purpose. In particular, fabrics with fluff cannot be used in computer rooms, electronic parts manufacturing factories, film manufacturing factories, special medical rooms, etc. where dust generation is a concern.

In addition, fabrics that use ultrafine fibers and are free of fluff reduce problems caused by drying, but combined with the softness of the ultrafine fibers, the so-called filling effect that fills the space becomes large. It is obtained as a high-density woven fabric as described in Japanese Patent No. 58-186663. In such textiles,
Even if the surface area of the fibers that make up the fabric is large,
It cannot function as a wiping cloth.

(Objective of the Invention) An object of the present invention is to propose a wiping cloth that uses ultrafine fibers, has excellent water and oil absorption properties, and has a structure that generates almost no dust.

(Structure of the Invention) The present invention provides a fabric whose surface is composed of ultrafine long fibers having a single yarn fineness of 09gcLe or less, the average specific volume of the fabric is o,'tacc/li or more, and "ゝ゛ and The micropores formed in the fabric are measured with a porosimeter, and the surface area of the micropores is 0.5.
m"/Ji' or more, and contains 50 or more micropores having a diameter in the range of 33.1 .mu.m to 2.86 .mu.m.

The wiping cloth referred to in the present invention includes a cleaning cloth, an oil adsorption cloth, and a machine care cloth.

It is used for lens cleaning, glass cleaning, household furniture cleaning, computer room cloth, electronic parts manufacturing factory cloth, film manufacturing factory cloth, 1% cloth for medical rooms, etc., and it does not contain water, oil, sewage, etc. In addition to being used for wiping things, water.

It can be used for applying oil, processing agents, etc.

The fibers used on the surface of the fabric of the present invention have a single yarn fineness of 0. g
It is necessary that the fibers are ultra-thin long fibers with a de or less. If the single yarn fineness exceeds 0.9 de, there is a risk that micropores formed in the fabric described below will not satisfy the requirements of the present invention, which is undesirable.

Such ultra-fine fibers include, for example, a method in which a polymer spinning solution is discharged from a spinneret and made into an ultra-fine state during spinning, a method in which the spun yarn is micro-stretched to become ultra-fine fibers, and a sea-island composite method. Examples include a method of dissolving and removing the sea component of fibers, and a method of splitting composite fibers. As the ultrafine fibers, synthetic fibers such as polyester, polyamide, and polyacryl dilyl, and recycled fibers such as rayon and acetate can be used. Especially polyester fibers.

It is preferable to use synthetic fibers such as polyamide fibers because they have good durability.

In addition, in the present invention, the micropores formed in the fabric are measured using a porosimeter (i Micromer manufactured by Shimadzu Corporation).
Itics Auto Pore9200).

Here, we will explain the outline of the method for measuring void pores using a porosimeter. Mercury does not wet most materials; unless forced into it, it will not enter the pores.

The relationship between the pore diameter and the pressure E applied to mercury is expressed by the following equation.

P D = -4δ eolI e where P is the pressure applied to the mercury, D is the diameter of the pore hole assumed to be a cylinder, δ is the surface tension of the mercury, and θ is the contact angle with respect to the sample mercury to be measured. From this formula, P,
If # and 0 are known, the void hole diameter 11D can be found. Further, the volume of the injected mercury represents the volume of the pores. Furthermore, the volume distribution with respect to the pore diameter can be obtained from the pressure applied stepwise and the volume value of the injected mercury.

In the measurement, the mercury pressure used was 1.9 to 6oooo
psia (equivalent to a pore diameter of 94 to 0.003 μm), and 43 levels of pressure were set within this range. The sample weight is 3 grams. The contact angle of mercury was 130 degrees, and the surface tension of mercury was 484 dynes/1. The pore diameter is (1
) was calculated according to the formula. Total pore volume is pore diameter of 0.003μ or more (approximately 60,000p within mercury pressure)
(equivalent to sla K). The unit of volume ratio of total pores is volume per gram of fabric (cc/g)
It is indicated by. The kite volume ratio with holes of 92.86 or more was determined by dividing the volume of holes with a diameter of 2.86 μm or more by the total pore volume and multiplying it by 100. Also, the pore diameter is 2.86 to 33.1
The cumulative volume ratio of the μ group is calculated by subtracting the cumulative volume of 33.1 μm or more pores from the cumulative volume of 2.86 μm or more pores, dividing this by the total pore volume, and multiplying this by 100. is also shown as a percentage.

In the cloth of the present invention, it is necessary that 50% or more of the pore diameters measured by this method be in the range of 33.1μ-≧D≧2.86μ. If the range of micropores is less than 50.

Either D > 33.1 pm contains a large amount of micropores, or D < 2.86μ trout contains a large amount of bottle small pores, and D〉”
If a large amount of 33.1 pat is contained,
It is the same as the fabric that has been conventionally used, and its wiping performance is excellent (・.

In addition, if a large amount of ultrafine fibers with D < 2.86 μm is contained, the surface area of the ultrafine fibers themselves can be increased, but the volume and surface area of micropores decrease, which significantly impairs wiping performance. be. In particular, in this case,
Since the diameter of the micro-porous pores becomes small, the above-mentioned fibers can be effectively used as fibers to obtain a cloth (fabric) having a pore distribution in which water or oil is distributed inside the micro-porous pores. However, those that have been crimped are preferably used.

In particular, for those that split bonded composite fibers, patent application No. 58-
173189, which is made of polyester and polyamide, is used to crimp the side-pie-side type composite fibers constituting the composite yarn, and the accompanying shrinkage of the heterogeneous composite yarns. The most preferred example is to use a thread that can be used to form voids.

In addition, in the case of a woven fabric, the structure of the fabric is a structure with a large number of tsubos of the ultrafine long fibers, such as 3/1 twill, torn oblique pattern,
Five (or more) sheets of satin etc. are exemplified, and in any of these structures, it is preferable that 75% or more of the ultrafine long fibers are arranged on the surface to be subjected to wiping.

On the other hand, in the case of knitted fabrics, it is preferable that the ultra-thin long fibers are arranged on the surface and knitted into a structure with a large area number, and a specific example is satin tricot using the ultra-thin long fibers.

In addition, when finishing the obtained fabric, a processing method (
Preferred examples include cam fit processing).

In actual manufacturing of the fabric, such means should be used alone or in combination so that the diameter distribution of the pores, the surface area of the pores, and the specific volume of the fabric fall within the above ranges. I can do it. Note that the wiping cloth of the present invention does not need to be composed of 100% ultrafine fibers with a single fiber of 0.9* or less, and can be made into a cloth by interweaving or interknitting with other yarns.

(Example 1) Polyester filament yarn (100゜/
48 fij), split type composite fiber made of polyester and polyamide as weft (450 dB/120 fil=
16 divisions/fkl) using filament yarn, 8-ply satin as the fabric structure, 120 threads/2.540m
+ Latitude density 67 lines/2.54α (cover factor: 2
620), and the fabric was treated with a dividing agent (Tetrosin 0).
A wiping cloth was obtained by treating with E-N 3% (manufactured by Yamakawa Pharmaceutical Co., Ltd.). Table 1 shows the performance of the wiping cloth.

(Example 2) As a knitting yarn, a splittable composite fiber made of polyester and polyamide (75 &/20 flj +16 splits/fi
1) was knitted into a smooth tissue by a circular knitting machine in a knitting machine cage 32, and the cough knitted fabric was divided into a divided treatment agent (te)pshin 0E-N.
3% (manufactured by Yamakawa Pharmaceutical Co., Ltd.)) to obtain a wiping cloth. The performance of the wiping cloth is shown in Table 1.

(Comparative Example 1) Polyester filament yarn (75d
e/72 fil) heated at 150 T/M, the warp density was 96 threads/2,5 using a flat string material as the textile structure.
A tack was woven with a weft density of 4c+a and a weft density of 90 threads/2.54 cm (cover factor: 1650), and the fabric was finished using a conventional finishing method. The performance of wiping gas is shown in Table 1.

(Comparative Example 2) Polyester filament yarn (7F) 6/
72 riz), the weft is split type composite fiber made of polyester and polyamide (150 filtration/40 filtration)
: 16 divisions/fin) using filament yarn (・, using plain weave as the fabric structure, warp density 110 pieces 72.54CI
It was woven at a ++ kneading density of 73 pieces/2.54 cm, and subjected to dividing treatment in the same manner as in the example to obtain a fabric. Table 1 shows the performance as a wiping door.

The method for measuring each measurement value used as a substitute characteristic for wiping performance is as follows.

Oil absorption speed/water absorption speed Measured according to JIS L1079-66.

That is, put water or oil in a buret and 1- is 26 to 27.
Adjust the stopcock so that it forms a drop, place the sample 2 scratches from the tip of the buret, drop only a -drop, and measure the time (seconds) until the specular reflection disappears on the fabric due to the drop.

In addition, oil absorption rate 1 in Table 1 uses a high viscosity oil (white mineral oil) with a viscosity of 360 cps, and oil absorption rate 1 uses a low viscosity oil (Corning oil) with a viscosity of 13.9 cps. It was measured.

4-1 5IS Measured by a method similar to L1o96.

Prepare 3 samples of vertical x horizontal (10α The sample weight (W;) after 20 seconds of squeezing is measured and determined by the following formula.

Embedded part (water) rate = w - children x 100 (%) (Effects of the invention) The wiping cloth of the present invention exhibits excellent wiping performance by having the above structure.

That is, the cloth of the present invention can be applied to conventionally used eyeglass lenses, cameras and other optical devices, mirrors and window glasses, polished or plated metal products, and Ik-plated products.

Wipe the cloudy or dirty surfaces of various products such as high-quality furniture, lacquerware, tableware, glassware, etc. 3, 1 to 3, 1
□1, Wow 6, Wow 5. (When a cleaning product is covered with a film of water or oil, it has a fast absorption rate and excellent water or water retention properties, so it has unprecedented wiping performance.

Claims (1)

[Claims] A fabric whose surface is composed of ultrafine long fibers with a single filament fineness of 0.9 de or less, and whose average specific volume is 0.70.
cc/g or more, and the surface area of the micro pores is 0.5 m^2/g or more when the micro pores formed in the fabric are measured with a porosimeter. A wiping cloth characterized by containing 50% or more of wiping cloth having a diameter D in the range of 33.1 μm to 2.86 μm.