JP2017145516A - Fabric for cleaner cloth and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fabric for cleaner cloth which can relieve pollution problems with impurities on a surface of a wiping object or in a clean room.SOLUTION: A fabric for cleaner cloth contains not less than 25 mass% of synthetic fiber multifilament yarn that single fiber fineness in a structure fiber gross quantity is not more than 0.6 dtex. The fabric for cleaner cloth needs that residual oligomeric quantity is not more than 0.1% o.m.f and glossiness recovery rate is not less than 90%.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a cloth for a cleaner cloth, which is excellent in wiping property and in which contamination or dust generation due to impurities is suppressed, and a manufacturing method thereof.

  In recent years, in the field of electronics or precision industry, the need for cleaning has been increased with the improvement of precision. For example, an extremely high level of wiping performance is required for a cleaner cloth used in a clean room when manufacturing a hard disk or the like.

  As the cleaner cloth, a nonwoven fabric using cotton is known. Cotton has excellent wiping performance due to its short fiber shape. However, when such a cleaner cloth is used for the wiping operation, there is a problem that fine fiber scraps remain attached to the surface of the object after wiping, which becomes equivalent to new dirt.

  In order to solve such a problem, it has been studied to use a cleaner cloth containing a solvent to suppress the remaining of fiber waste on the surface of the object to be wiped. However, in such a case, the solvent contained in the cleaner cloth may remain on the surface of the object or generate volatile gas, thereby reducing the performance of the product (wiping object) or deteriorating the product. It occurs. Therefore, in order to suppress the remaining of the solvent, after the wiping operation, a process of blowing away fiber scraps using a gas or a solvent is necessary, and there is a problem that it takes cost or labor. Furthermore, there have been problems in managing the solvent or environmental pollution due to the solvent or volatile gas generated from the solvent.

  In order to solve the so-called dust generation problem that fiber waste remains on the surface of an object to be wiped, a cloth for a cleaner cloth using synthetic fibers is known. However, in such a fabric, after various finishing processes (for example, soaping process, etc.), oligomers remain on the fiber surface, which contaminates the surface of the object to be wiped as impurities, or the oligomers generate dust and scatter in the clean room. There was a problem of contamination.

  Therefore, various studies have been made to obtain a cloth for a cleaner cloth that can reduce the amount of remaining oligomers and suppress dust generation. For example, Patent Document 1 describes that a resin capable of reducing the amount of residual oligomer is selected and used as a raw material when a synthetic fiber constituting a cloth for a cleaner cloth is spun. Patent Document 2 describes that a high-pressure liquid columnar jet or alkali treatment is performed on a fabric to remove oligomers on the surface of the fabric.

  Patent Document 3 describes that the surface of the fabric is subjected to water jet punching to suppress dust generation and to remove adhered foreign matter. Patent Document 4 describes a technique in which a fabric is produced using split-type composite fibers, and the fibers are split with an alkaline solution or the like. By such treatment, oligomers on the fiber surface are dissolved and removed with an alkaline solution. It is described. Patent Document 5 describes that ion-contamination is reduced by using a split yarn made of polyester and polyamide in a woven wiper and washing with a chelating agent or an oligomer remover after splitting treatment. Yes. Patent Document 6 describes that, in a cutting part of a wiping cloth, the constituent fibers are thermally fused to suppress dust generation from the edge part.

JP 2001-25453 A Japanese Patent Laid-Open No. 2002-161452 Japanese Patent Laid-Open No. 9-119067 JP 2008-303524 A JP 2010-94780 A JP-A-10-121349

  However, even with the use of the technology described above, in view of the current situation that further suppression of dust generation is strongly desired in order to improve quality in manufacturing in a clean room, it is possible to sufficiently suppress dust generation or contamination. It is difficult to obtain a cloth for a cleaner cloth that can be used. In addition, even if the above-described technique is used, there is a problem that a complicated process is required to manufacture the cloth for the cleaner cloth, which is costly and troublesome. In view of the above situation, the object of the present invention is to provide a cloth for a cleaner cloth that is excellent in wiping performance in use in a clean room or the like and can improve the problem of contamination due to impurities on the surface of the object to be wiped or in the clean room. It is to be. Furthermore, the subject of this invention is providing the method of manufacturing such a cloth for cleaner cloths, without requiring complicated operation.

    The present inventor is excellent in wiping property and sufficient amount of residual oligomer in the fabric only by performing low-temperature plasma treatment on a base fabric comprising synthetic fiber multifilament yarns containing ultrafine fibers at a specific ratio. It has been found for the first time that a cloth for a cleaner cloth that can be sufficiently reduced to prevent contamination and dust generation has been achieved.

That is, the gist of the present invention is the following (1) to (4).
A cloth for a cleaner cloth containing 25% by mass or more of a synthetic fiber multifilament yarn having a single fiber fineness of 0.6 dtex or less in the total amount of constituent fibers,
Residual oligomer amount is 0.1% om. A cloth for a cleaner cloth having f or less and a gloss recovery rate of 90% or more.

(2) The cloth for cleaner cloth according to (1), wherein the cross-sectional shape of the synthetic fiber multifilament yarn in the longitudinal direction of the single yarn is an irregular cross-sectional shape.

(3) including a step of performing low-temperature plasma treatment in a non-polymerizable gas on a base fabric containing 25% by mass or more of a synthetic fiber multifilament yarn having a single fiber fineness of 0.6 decitex or less in the total amount of constituent fibers; A method for producing a cloth for a cleaner cloth.
(4) A base fabric is manufactured using split-type conjugate fibers, and the split-type conjugate fibers are split to treat a synthetic fiber multifilament yarn having a single fiber fineness of 0.6 dtex or less at 25% by mass or more. The manufacturing method of the cloth for cleaner cloths of (3) which performs the process which carries out the said low temperature plasma process with respect to this base cloth, obtaining the base cloth which contains.

  ADVANTAGE OF THE INVENTION According to this invention, while being excellent in the wipeability with respect to a stain | pollution | contamination, the amount of residual oligomers can be reduced and the cloth for cleaner cloths by which the dust generation from cloth itself was suppressed can be obtained. Since such a cloth for cleaner cloth can suppress contamination of the object to be wiped off or contamination of the environment in the clean room, it is suitable for use in a clean room, particularly in a field where precision is required. Further, according to the production method of the present invention, such a cloth for cleaner cloth can be produced without going through complicated steps.

It is a schematic diagram which shows an example of the cross-sectional shape of the split type composite fiber used for this invention. It is a schematic diagram which shows an example of the cross-sectional shape of the single yarn of the synthetic fiber multifilament yarn used for this invention.

Hereinafter, the present invention will be described in detail.
The cloth for cleaner cloth of the present invention contains 25% by mass or more of synthetic fiber multifilament yarn having a single fiber fineness of 0.6 dtex or less in the total amount of constituent fibers, and the amount of residual oligomer is 0.1% o . m. f or less and the gloss recovery rate is 90% or more.

  The synthetic resin that is a raw material of the synthetic fiber multifilament is not particularly limited, and examples thereof include polyester, nylon, vinylon, and polyolefin. A synthetic fiber multifilament yarn can be obtained by spinning such a synthetic resin into a multifilament yarn of long fibers. Among them, those using a polyester polymer as a raw material are preferable because they have an appropriate elasticity and are excellent in strength or chemical resistance. In particular, when split fiber composite fiber as described later is subjected to split fiber processing to obtain a synthetic fiber multifilament yarn, polyethylene terephthalate which is hardly soluble in alkali may be used as a raw material.

  In the fabric, a synthetic fiber multifilament yarn having a single fiber fineness of 0.6 dtex or less (hereinafter sometimes abbreviated as an ultrafine multifilament yarn) is contained in an amount of 25% by mass or more in the fibers constituting the fabric. It is preferable that 45% by mass or more is contained, more preferably 55% by mass or more, and still more preferably 70% by mass or more. The single fiber fineness of the ultrafine multifilament yarn is preferably 0.5 dtex or less, more preferably 0.4 dtex or less, and further preferably 0.3 dtex or less. When the single fiber fineness of the synthetic fiber multifilament yarn is 0.6 dtex or less, the surface area of the constituent fibers of the fabric increases and the gap between the fibers increases, so the contact area between the dirt and the single yarn is reduced. As a result, it becomes easy to catch dirt and realizes excellent wiping property. When the content of the ultrafine multifilament yarn is 25% by mass or more, the produced cloth for cleaner cloth is excellent in wiping property and can sufficiently remove dirt.

  The cross-sectional shape with respect to the longitudinal direction of the single yarn constituting the synthetic fiber multifilament yarn is preferably an irregular cross-sectional shape. Examples of the irregular cross-sectional shape include a wedge shape, a Y shape, and a T shape. In particular, an atypical cross-sectional shape having an acute angle is preferable. This is because an acute angle portion appears in the cross section of the single yarn, and the function of scraping off dirt (wiping property) is further improved.

  As a method for producing the ultrafine multifilament yarn as described above, a normal spinning method using a synthetic resin such as polyester, nylon, vinylon, or polyolefin as a raw material may be employed. Alternatively, a method may be employed in which a split type composite fiber is obtained by composite spinning using synthetic resins having different characteristics, and a split fiber process (split split fiber process) is performed on the fiber. The latter method is preferable because it is easier to make finer and the cross-sectional shape is easily a desired irregular cross-section. In the method for producing an ultrafine multifilament yarn using split fiber processing, the combination of synthetic resins having different characteristics is not particularly limited, and a combination of similar synthetic resins (for example, polyester and polyester) It may be a combination of different synthetic resins (for example, polyester and nylon). For example, a combination of synthetic resins having different solubility or heat shrinkability with respect to a drug (solvent), or a combination of synthetic resins having low adhesion to each other (for example, polyester and nylon) can be used. As the split fiber processing, for example, a weight reduction process using an alkaline solution may be used, or a fiber may be split by heat contraction by heat treatment, or a physical force may be applied. Then, it may be split.

  An example of split fiber processing by weight reduction using an alkaline solution is described below. For example, a multifilament yarn made of split-type composite fibers (filaments to be split) 1 having a cross-sectional shape as shown in FIG. 1 is manufactured. The split type composite fiber 1 can be obtained by combining synthetic resins having different characteristics, and can be manufactured, for example, by composite spinning using a hardly alkali-soluble polymer 2 and an alkali-soluble polymer 3. Next, for example, the alkali-soluble polymer 3 is removed using an alkali solution, and only the poorly alkali-soluble polymer 2 is used as a polymer constituting the fiber (split processing), whereby a modified cross-sectional shape as shown in FIG. 2 is obtained. It can be set as the ultrafine multifilament yarn which consists of the single yarn which has. Specific examples of the hardly alkali-soluble polymer 2 include polyethylene terephthalate. Specific examples of the readily alkali-soluble polymer 2 are obtained by copolymerizing an isophthalic acid component having a sulfonic acid group and an ethylene oxide adduct of bisphenols as described in JP-A-1-209825. And polyethylene terephthalate-based copolyester. As a cross-sectional shape of the split-type conjugate fiber 1, in addition to the radial type as shown in FIG.

  The form of the fabric is not particularly limited as long as it does not impair the object of the present invention, and various woven fabrics, knitted fabrics, nonwoven fabrics, and the like can be mentioned. In addition, when performing the splitting process using the alkali solution described above to obtain an ultrafine multifilament yarn, it is preferable to perform the splitting process after weaving or knitting the fabric from the viewpoint of easy fineness. . Moreover, the conditions of the split fiber treatment using an alkaline solution may be, for example, a 0.5 to 10% by mass sodium hydroxide aqueous solution, a treatment temperature of 80 to 100 ° C., and a treatment time of 20 to 60 minutes. .

  For the purpose of adjusting the single fiber fineness, the content in the fabric, or the cross-sectional shape of the ultrafine multifilament yarn, an alkali treatment may be further performed after the splitting treatment, if necessary. In addition, for the purpose of imparting firmness, stiffness, etc. to the fabric, for example, crimping treatment or relaxation treatment may be performed.

  The method for producing the cloth for a cleaner cloth according to the present invention can be applied to a base fabric containing 25% by mass or more of a synthetic fiber multifilament yarn having a single fiber fineness of 0.6 dtex or less in the total amount of constituent fibers in a non-polymerizable gas. At low temperature plasma treatment. In the present invention, it is possible to produce a cloth for a cleaner cloth in which the remaining oligomer can be decomposed and removed only by performing an operation called low-temperature plasma treatment, and dust generation is suppressed. Furthermore, since the hydrophilicity of the fabric surface is remarkably improved, it is possible to produce a fabric for a cleaner cloth that is further excellent in wiping property.

  Plasma is a discharge state obtained by applying electric energy to a gas, and means a state in which negatively charged electrons, positively charged ions, and electrically neutral radicals are included. In general, low-temperature plasma refers to a plasma state in a normal temperature range by glow discharge, atmospheric pressure glow discharge, corona discharge, or the like performed under reduced pressure. It is assumed that the oligomers remaining in the fabric are chemically decomposed and removed by radicals contained in the low temperature plasma.

  The cleaner cloth of the present invention has a residual oligomer amount of 0.1% o.d. m. f. Or less, 0.05% o. m. f. The following is preferable. Where o. m. f. Is an abbreviation for “on the mass of fiber” and indicates the mass of the substance relative to the mass of the fiber. Concerning cleaner cloth used in a clean room, attention is focused on impurities present on the surface of an object after wiping as part of improvement in wiping accuracy that is increasing in demand. To this impurity, the oligomer contained in the cleaner cloth greatly contributes to the remaining surface after being transferred to the target surface as a collection of micro-level dirt. The residual amount of this oligomer is 0.1% o. m. f. When it is below, impurities on the surface of the object after wiping can be drastically reduced, and the wiping accuracy at the micro level can be improved. On the other hand, the residual oligomer amount was 0.1% o. m. f. Exceeds the presence of oligomers on the surface of the object after wiping, and in areas where high air cleanliness is required, such as in a clean room, oligomer scattering occurs after wiping and maintains high air cleanliness. I can't do that. In addition, the calculation method of the amount of remaining oligomers is mentioned later in an Example.

  The reason why the oligomer is present in the synthetic fiber is that not all the raw material monomers are completely polymerized when the synthetic resin that is the raw material of the synthetic fiber multifilament yarn is polymerized. Such oligomers are usually insoluble in water and are difficult to remove by conventional washing methods. In addition, when the fabric is treated at a high temperature of, for example, about 100 ° C. or higher, oligomers present inside the synthetic fiber may be raised on the surface. That is, a lot of oligomers remain on the surface of the synthetic fiber fabric obtained by the usual method.

  When the oligomer is removed by washing with water or the like, the oligomer inside the fiber may be raised on the surface by high-temperature heat treatment such as when water is dried. In addition, even when subjected to the split fiber treatment, the further alkali treatment, or the crimping treatment by the alkali weight reduction process as described above, the oligomer may be raised on the surface due to the high temperature heat treatment. However, in the present invention, the oligomer is chemically decomposed and removed by low-temperature plasma treatment, and it is not necessary to apply a high temperature, so that the oligomer can be prevented from being raised. Furthermore, even when high-temperature heat treatment is performed in split fiber processing or the like, if low-temperature plasma treatment is performed as the last step, oligomers remaining on the surface can be reliably decomposed and reduced.

Examples of the non-polymerizable gas include oxygen, nitrogen, hydrogen, helium, argon, carbon dioxide gas, or a mixed gas thereof, and oxygen is particularly preferable. The frequency of the high frequency energy is not particularly limited as long as it can generate a low temperature plasma, and can be used in the range of 1 to 3000 MHz. However, for practical purposes, it is preferable to use 13.56 MHz, 27.12 MHz, 40.68 MHz, 915 MHz, or 2450 MHz, and more preferably 13.56 MHz, due to regulations such as the Radio Law. The high frequency energy of the power (RF power), preferably ^{0.1~10.0W / cm 2, 1.0~30.0W / cm} 2 is more preferable.

  The degree of vacuum during the plasma treatment is not particularly limited as long as low temperature plasma is generated. However, in order to optimize the radical state or density for decomposition and removal of the oligomer, 13 to 2670 Pa is used. Preferably, 40 to 1330 Pa is more preferable. The plasma treatment time is not particularly limited, but is preferably in the range of 0.5 to 60 minutes, more preferably 1 to 5 minutes in order to optimize the radical state or density for decomposition and removal of the oligomer. .

  Since the cloth for cleaner cloth of the present invention is remarkably excellent in wiping property, it can achieve a gloss recovery rate of 90% or more, and preferably has a gloss recovery rate of 95% or more. A method for calculating the glossiness recovery rate will be described later in the embodiment.

  Hereinafter, the present invention will be described in detail according to examples. The present invention is not limited to this example. In addition, evaluation of the obtained fabric was performed by the following method.

(1) Residual oligomer amount About 0.5 g of a sample (fabric obtained in Examples or Comparative Examples) was precisely weighed to obtain an A value. The sample was dried at 105 ° C. for 30 minutes. Furthermore, after drying under reduced pressure at 22 Pa and 80 ° C. for 40 minutes with a vacuum dryer, 100 mL of tetrahydrofuran was added and shaken to extract the oligomer. This shaking was performed twice for 30 minutes, and the obtained extract was filtered with a glass filter (G4 glass filter, manufactured by Iwaki Houseware Co., Ltd.). Thereafter, the filtrate was concentrated and solidified in a vacuum dryer, and the residue was precisely weighed to obtain a B value. The amount of extraction was calculated from the following formula and used as the amount of residual oligomer.
Residual oligomer amount (%) = [B / A] × 100

(2) Dust generation property The fabrics obtained in the examples and comparative examples were cleaned with pure water and then neutralized and cut into a size of 1 m × 1 m to prepare a sample. According to JIS B 9923 (tumbling method), the number of suspended particles having a particle size of 0.5 μm or more was measured. This was used as an index of dust generation and evaluated according to the following criteria.
◎: less than 20 / ^{m 3} ○: 20 / ^{m 3} or more and less than 30 / ^{m 3} △: 30 / ^{m 3} or more 75 / ^{m 3} less ×: more than 75 / ^{m 3}

(3) Wipeability A cleaned slide glass was prepared, and the glossiness (K1) at the center was measured using a handy gloss meter (trade name “Gloss Checker IG-320” manufactured by Horiba, Ltd.). . Next, 0.2 g of beef tallow was rubbed into a 2 cm × 2 cm region in the center of the surface of the slide glass to attach dirt. Samples (fabrics obtained in Examples and Comparative Examples) were wound around a finger and wiped off the dirt on the surface of the slide glass, and the glossiness (K2) was measured again. The gloss recovery rate was determined from these gloss levels (K1, K2) based on the following formula. This was used as an index of wiping property and evaluated according to the following criteria.
Glossiness recovery rate (%) = (K2 / K1) × 100
◎: 95% or more ○: 90% or more and less than 95% △: 85% or more and less than 90% ×: less than 85%

Example 1
Alternately 72 parts by mass of polyethylene terephthalate (alkali poorly soluble polymer) and 28 parts by mass of polyethylene terephthalate copolyester (alkali-soluble polymer) copolymerized with 2.5 mol% of 5-sodium sulfoisophthalic acid Then, a multi-filament yarn (78 dtex / 48 filament) having a single piece of the split type composite fiber having the cross-sectional shape shown in FIG. 1 was obtained. A plain woven fabric having a warp density of 160 yarns / 2.54 cm and a weft density of 90 yarns / 2.54 cm was woven in the water jet loom using the false twisted yarn of the filament yarn as warp yarns and weft yarns.

Subsequently, the fabric was subjected to weight reduction processing (split processing) at 100 ° C. for 30 minutes using a 2 mass% sodium hydroxide solution (weight reduction rate: 30%). The alkali-soluble polymer is removed by the above weight reduction processing, and the split type composite fiber shown in FIG. 1 is split into ultrafine fibers (single fiber fineness 0.14 dtex) having an irregular cross-sectional shape as shown in FIG. It was.
Next, the cloth for cleaner cloth of Example 1 was obtained by subjecting the woven fabric to a low temperature plasma treatment shown in the following condition 1.
<Condition 1>
Gas type: Oxygen vacuum degree: 133 Pa
Frequency: 13.56MHz
High frequency power: 1.0 W / cm ²
Processing time: 1 minute

(Example 2)
As a warp, a multifilament yarn (78 dtex / 48 filament) having a split type composite fiber obtained in the same manner as in Example 1 and a polyethylene terephthalate yarn (33) obtained by a melt spinning method. Using a false twisted yarn (84 dtex / 36 filament) obtained by melt spinning as a weft. In the room, five satin woven fabrics having a warp density of 253 pieces / 2.54 cm and a weft density of 88 pieces / 2.54 cm were woven.

  Subsequently, the fabric was subjected to weight reduction processing at 100 ° C. for 30 minutes using a 2% by mass sodium hydroxide solution (weight reduction rate: 17%). The alkali-soluble polymer was removed by this weight reduction process, and the split type composite fiber shown in FIG. 1 was split into ultrafine fibers having an irregular cross-sectional shape as shown in FIG.

  Thereafter, crimping and relaxing were performed under the conditions of 130 ° C. × 30 minutes. In addition, the fabric was treated with 4% caustic soda. m. f. After further alkali treatment under the conditions used in the above ratio, low-temperature plasma treatment was performed under the same conditions as in Example 1 to obtain a cleaner cloth fabric of Example 2.

(Example 3)
The composite false twisted yarn used as the warp in Example 2 was knitted with a circular knitting machine with a gauge number of 24 G to obtain a smooth knitted fabric. Subsequently, the knitted fabric was subjected to weight reduction processing at 100 ° C. for 30 minutes using a 2 mass% sodium hydroxide solution (weight loss rate: 21%). The alkali-soluble polymer was removed by this weight reduction process, and the split-type composite fiber shown in FIG. 1 was split into ultrafine fibers having an irregular cross-sectional shape shown in FIG.

  Thereafter, crimping and relaxing were performed under the conditions of 130 ° C. × 30 minutes. Furthermore, after performing further alkali treatment on the same conditions as Example 2, the cloth for cleaner cloths of Example 3 was obtained by performing low-temperature plasma treatment.

(Comparative Example 1)
A cleaner cloth for Comparative Example 1 was obtained in the same manner as in Example 1 except that the low temperature plasma treatment was not performed.

(Comparative Example 2)
The warp yarn is a polyethylene terephthalate yarn (84 dtex / 36 filament) false twisted yarn obtained by melt spinning, and the weft is the composite false twist yarn used as the warp yarn in Example 2. In a water jet loom, five satin woven fabrics having a warp density of 300 / 2.54 cm and a weft density of 70 / 2.54 cm were woven.

  Subsequently, the fabric was subjected to weight reduction processing at 100 ° C. for 30 minutes using a 2 mass% sodium hydroxide solution (weight reduction rate: 5%). Then, after performing a crimping process and a relaxation process under conditions of 130 ° C. × 30 minutes, heat treatment was performed at 170 ° C. for 1 minute with a tenter to obtain a cloth for cleaner cloth of Comparative Example 2.

(Comparative Example 3)
A knitted fabric was produced under the same conditions as in Example 3 using a false twisted yarn of polyethylene terephthalate yarn (84 dtex / 36 filament) obtained by melt spinning. Thereafter, crimping and relaxing were performed under the conditions of 130 ° C. × 30 minutes. Then, the low temperature plasma process was carried out on the same conditions as Example 1, and the cloth for cleaner cloth of the comparative example 3 was obtained.

  Table 1 below shows the configurations and characteristics of the cloths for cleaner cloth obtained in Examples 1 to 3 and Comparative Examples 1 to 3.

  From the results shown in Table 1, the cloth for the cleaner cloth obtained in Examples 1 to 3 is excellent in wiping property, and the amount of residual oligomer is sufficiently reduced, so there is almost no dust generation from the cloth, and the clean room It was suitable as a wiping cloth used inside. In particular, the cloth for cleaner cloth of Example 1 was particularly excellent in wiping property because it contained only ultrafine multifilament yarn as a constituent fiber. In addition, the cloth for the cleaner cloth of Examples 2 and 3 was further reduced in the amount of remaining oligomers and remarkably excellent in dust generation, but this was because there were fewer filaments subjected to split fiber processing, This is presumably because there was less precipitation.

  Since the fabric obtained in Comparative Example 1 was not subjected to plasma treatment, the amount of residual oligomer was large and the dust generation property was inferior. In addition, since the fabric obtained in Comparative Example 2 was finished by a normal heat treatment, the amount of residual oligomer was large and the dust generation property was inferior, and the content of the ultrafine multifilament yarn was too low. It was inferior. Furthermore, the fabric obtained in Comparative Example 3 was inferior in wiping property because the content of the ultrafine multifilament yarn was too small.

1 Split type composite fiber 2 Alkali poorly soluble polymer 3 Alkali easily soluble polymer 4 Ultra fine multifilament yarn single yarn

Claims (4)

A cloth for a cleaner cloth containing 25% by mass or more of a synthetic fiber multifilament yarn having a single fiber fineness of 0.6 dtex or less in the total amount of constituent fibers,
Residual oligomer amount 0.1% o.d. m. A cloth for cleaner cloth, characterized by having a gloss recovery rate of 90% or more and f or less.   The cloth for cleaner cloth according to claim 1, wherein a cross-sectional shape with respect to a longitudinal direction of the single yarn constituting the synthetic fiber multifilament yarn is an irregular cross-sectional shape.   Including a step of low-temperature plasma treatment in a non-polymerizable gas for a base fabric containing 25% by mass or more of a synthetic fiber multifilament yarn having a single fiber fineness of 0.6 dtex or less in the total amount of constituent fibers The manufacturing method of the cloth for cleaner cloth. A base fabric comprising 25% by mass or more of a synthetic fiber multifilament yarn having a single fiber fineness of 0.6 decitex or less by producing a base fabric using split composite fibers and splitting the split composite fibers. The method for producing a cloth for a cleaner cloth according to claim 3, wherein the step of subjecting the base cloth to the low-temperature plasma treatment is performed.