JP2002371451A - Wiping cloth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wiping cloth that can wipe off stains on uneven face, particularly stains in hollow spots. SOLUTION: The wiping cloth is produced by inserting 8-16 chenille yarns per inch and knitting them where the fineness of the single filament of the ornamental yarn is 0.09-1.7 dtex, the height from the core yarn is 0.5-3 mm and they are held with the linear density of 7-15 counts/cm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiping cloth, and more particularly, to a wiping cloth excellent in removing dirt on a surface having irregularities such as coins and keyboards, and in particular, a concave part, and wiping using the cloth. Regarding the cross.

[0002]

2. Description of the Related Art Conventionally, knitted or non-woven fabrics containing ultrafine fibers have been used for precious metals, tableware, furniture, automobiles, office automation equipment, musical instruments,
It is used as a wiping cloth that removes fingerprints and oil stains adhered to glass products, showcases, mirrors, etc. by drying and wiping without leaving any fluff. As a form of the wiping cloth using these conventional ultrafine fibers, the ultrafine fibers were cut pile-shaped, loop pile-shaped, or woven / knitted planar. However, in the case of the above-described embodiment, it is difficult to clean not only the surface having the simple unevenness but also the surface having the complicated uneven pattern, particularly the cleanness to every corner of the concave portion.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional drawbacks, and is intended to wipe off dirt on a surface having irregularities, in particular, a concave portion, in a beautiful manner. An object of the present invention is to provide a fabric for use and a wiping cloth made of the fabric.

[0004]

Means for Solving the Problems In order to achieve the above object, the present inventor has made intensive studies. As a result, they have found that by inserting and knitting a specific molding yarn, it is possible to neatly wipe off dirt attached to a surface having irregularities, in particular, concave portions to every corner.

That is, the present invention relates to a wiping cloth which is knitted by inserting 8 to 16 molding yarns per inch, wherein the flower yarns forming the molding yarns have a single fiber fineness of 0.1.
This is a wiping cloth made of fibers of 09 to 1.7 dtex, having a height of 0.5 to 3 mm from the core yarn, and being gripped at a linear density of 7 to 15 fibers / cm.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
The single fiber fineness of the yarn forming the molding yarn of the present invention is 0.0
It is 9 to 1.7 dtex, and preferably 0.1 to 0.5 dtex. If the single fiber fineness is less than 0.09 dtex, the single fibers will be cut at the time of wiping, leaving fluff on the surface to be cleaned. On the other hand, if it exceeds 1.7 dtex, the wiping performance becomes insufficient. In addition, the flower yarn preferably has a crimp in that the wiping property is improved due to disorder of the direction of the single fiber, and more preferably has a false twist crimp. The microfiber constituting the flower yarn is constituted by a splittable conjugate fiber or an easily-elutable component and a hardly-elutable component obtained by combining two or more types of mutually incompatible fiber-forming thermoplastic polymers, A splittable conjugate fiber in which easily eluting components are eluted and hardly eluting components are divided into a plurality of components can be used. As the shape of such splittable conjugate fibers, those generally known as splittable conjugate fibers can be used, and the cross-sectional shape thereof is used in combination with various types such as a flat type, a petal type, a radial type, and a wedge type. be able to.

In particular, in the present invention, split-type composite fibers joined in a side-by-side type such that the cross section after splitting becomes flat are more preferable in terms of wiping properties.

[0008] In the present invention, the filament group of the splittable conjugate fiber constituting the flower yarn of the maul yarn may be one in which completely splitting and one in which partial splitting has occurred, but may be mixed. The monofilament fineness of the non-existing portion
It is important that it is 7 dtex or less. The method of dividing the splittable conjugate fiber is not particularly limited, and a method using a chemical, a method by false twisting, and a method of performing a heat treatment can be adopted, and the so-called degree of division can be appropriately controlled. In the present invention, the splittable conjugate fiber may not be completely split.

[0009] The flower yarn forming the molding yarn used in the present invention has a height from the core yarn of 0.5 to 3 mm, preferably 1 to 2 mm. If the height is less than 0.5 mm or more than 3 mm, it is not possible to wipe off dirt adhering to the concave portion to every corner, and the wiping property is deteriorated.

The fibers constituting the yarn used in the present invention are not particularly limited, and include polyester, nylon, polypropylene, vinylon, and ethylene-vinyl alcohol copolymer fibers, but the surface to be cleaned is wet. In some cases, it is preferable to use hydrophilic fibers, and it is more preferable to use splittable conjugate fibers containing nylon, vinylon, and ethylene-vinyl alcohol-based copolymer fibers. The fibers constituting the core yarn used in the present invention are also not particularly limited, and include polyester, nylon and the like.
More preferably, nylon is used. In addition, as long as the effects of the present invention are not impaired, cotton as the hydrophilic fiber,
Rayon or the like may be used.

In the present invention, the yarn has a linear density of 7-1.
It is important that it is gripped at 5 wires / cm, and preferably 8 to 10 wires / cm. When the linear density is less than 7 lines / cm, the degree of adhesion to the object to be cleaned is reduced, and the wiping property is deteriorated. On the other hand, if the linear density exceeds 15 yarns / cm, the processing speed becomes extremely low in producing the molding yarn, which is disadvantageous in cost.

The bulk of the molding yarn used in the wiping fabric of the present invention is mostly occupied by the flower yarn, and the wiping performance is deeply affected by the state of the ultrafine fibers which are the constituent fibers. Therefore, the fineness of the molding yarn is not particularly limited, and can be appropriately set.

[0013] The production of the molding yarn according to the present invention includes, for example,
While supplying a plurality of core yarns (some of them may be adhesive fibers for bonding the yarns) to the molding twisting machine, the yarns are wound around the yarns, and then the yarns wound by the cutter are wound. When forming a molding yarn by twisting while cutting, or when using an adhesive fiber, after forming the molding yarn,
The heat treatment is performed at a temperature at which the adhesive fiber is melted, and the core yarn and the yarn are bonded and fixed to prevent the falling off of the yarn from the core yarn. The method is not limited to the method of manufacturing the molding yarn, and the molding yarn may be manufactured using, for example, the Raschel method or the tricot method, and the manufacturing method is not limited.

Hereinafter, the wiping fabric of the present invention will be described in more detail. The wiping fabric of the present invention is
The above-described molding yarn is inserted, and as a form thereof, a circular knitted fabric is more preferably adopted because it can be adapted to small-lot production. In particular, inlay knitting using a single circular knitting machine is preferred because of its low elasticity and difficulty in laddering.

The wiping cloth of the present invention is characterized in that the above-described molding yarn is knitted by inserting 7 to 15 yarns per inch. It is possible to wipe off dirt from every corner. Even if the number of insertions is less than 7, or more than 15, the wiping property is deteriorated. From the viewpoint of wiping off the dirt in the concave portion, it is preferable to use 10 to 13 lines per inch.

In addition, it is preferable to insert the molding yarn forming the wiping fabric of the present invention with a floating structure from the viewpoint of more effectively exerting the wiping performance. By inserting with the floating structure, the degree of freedom of the molding thread is increased, and the dirt on the uneven surface, particularly the concave portion, can be wiped to every corner.
In addition, the floating texture referred to here is that the molding yarn used in the present invention is present only on one side including the ground texture, and is not restrained by a part of the ground thread on the opposite surface through the ground texture. It means that. Further, the molding yarn is characterized in that it is gripped only on one side by a part of the ground yarn and no knit loop is formed. When the molding yarn forms a loop in the ground yarn and is constrained, the degree of freedom is extremely reduced, and the wiping property may be deteriorated.

Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a schematic side view showing one example of a molding yarn used in the present invention, wherein 1 indicates a core yarn and 2 indicates a flower yarn. The flower yarn is arranged in a cylindrical shape around the yarn axis by the twist given to the core yarn. The molding yarn produced by the present invention has an inscribed circle converted diameter of 1 to 4 mm, and the height 3 of the flower yarn 2 is represented by the length from the core yarn to one end face of the cut piece. The linear density indicates the number of the yarns 2 gripped in the axial direction of the core yarn 1 by 1 cm, and the height and the linear density can be measured with a magnifying glass.

FIG. 2 is a schematic cross-sectional view showing an example of the splittable conjugate fiber used in the present invention.
When viewed from the fiber cross section, any composite fiber having a structure in which two or more incompatible fiber-forming thermoplastic polymers are bonded may be used.
The two types of fiber-forming thermoplastic polymers A and B are joined in parallel or almost parallel as shown in FIGS. 2A and 2B, and as shown in FIG. 2C. Examples are those that are radially joined, and those that are joined somewhat randomly as shown in FIG. 2D. However, the splittable conjugate fibers are not limited to those shown in FIG.

FIG. 3 is a schematic perspective sectional view showing an example of a divided state when FIG. 2 (a) is used as a yarn, in which the fiber-forming thermoplastic polymers A and B are partially joined at the joint surface. This shows a state in which the image is divided. Of course, this is only an example, and there is a case where the joint surface is completely divided, if examined closely.

FIG. 4 is an enlarged schematic plan view showing the wiping cloth according to the present invention, in which the molding yarn 4 is inserted and knitted and held by the ground yarn 5. Since the molding yarn 4 has a so-called fluff portion, laddering is less likely to occur in combination with the effect on the structure.

FIG. 5 is a schematic sectional view showing a wiping cloth according to the present invention, in which the molding yarn 4 is only grasped and laid on one surface of the ground structure, specifically, the surface on the sinker loop side. Is only protruding from the gap of the ground organization.

On the other hand, FIG. 6 is a schematic sectional view of a conventional wiping cloth. FIG. 6 (a) shows an ultrafine fiber erected in a ground structure as a cut pile, and FIG. 6 (b) shows an ultrafine fiber. Is set up in the ground organization as a loop pile. Further, FIG. 6 (c) shows a state where the ultrafine fibers are constrained in the same plane as the ground tissue. Of course, (a) ~
It is also conceivable that the basic structure (c) is mixed in the same fabric. However, the structural difference between the conventional wiping cloth shown in FIG. 6 and the wiping cloth of the present invention is obvious. That is, since the wiping cloth of the present invention is arranged so that the microfibers can contact the surface to be cleaned almost vertically, excellent wiping properties are exhibited.

FIG. 7 is a schematic diagram showing the state of contact between the wiping cloth 6 and the surface 7 to be cleaned during wiping. FIG.
FIG. 7A shows an example in which a cut pile is erected on a ground structure, and FIG. 7B shows an example in which ultrafine fibers are erected on a ground structure as a loop pile. FIG. 7 (c) shows a state in which the ultrafine fibers are constrained in the same plane as the ground tissue.
(D) shows a state where the uneven surface is wiped off using the wiping cloth of the present invention. 7 (b) and 7 (c) are structurally wiped off on the side surfaces of the ultrafine fibers, and the adhesion to the recess is not good. Further, in FIG. 7A, the deformation of the ultrafine fibers is large, but it is estimated that the frictional force with the surface to be cleaned generated at the time of wiping is low in view of the insufficient wiping ability of the concave portion. . On the other hand, in FIG. 7 (d) showing the wiping by the wiping cloth of the present invention, the good wiping ability to every corner of the concave portion is due to the high degree of adhesion between the core yarn of the molding yarn and the concave portion and the appropriate friction It is considered that the generation of force exerted excellent wiping properties.

[0024]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. The wiping property evaluation method adopted in this specification is as follows.

Evaluating method for wiping cloth wiping cloth Oil-based black ink (manufactured by Teranishi Kagaku Kogyo Co., Ltd.) used for whiteboards. The concave portion of the portion was contaminated with uniform writing pressure to obtain a contaminated body to be evaluated. Next, the wiping cloth to be evaluated was fixed to a paper roll having an outer diameter of 30 mm so that the wiping surface was on the outside so as not to sag. The wiping is performed by uniformly pressing the roll on which the wiping cloth is fixed against the surface of the contaminant to be evaluated, and making one reciprocation.
The removability of contamination was evaluated on a three-point scale. A: All corners were wiped off without a trace. B: Only the concave edge portion could not be wiped off. C: Contamination remained as a whole.

Example 1 6-nylon (A) and polyethylene terephthalate (B) were spun at a mass ratio of 1: 2 into an 11-split composite fiber having a cross-sectional structure shown in FIG. 2 (a). 16
A 5dtex / 48 filament drawn yarn was obtained. The obtained yarn was heated at a false twist number of 2350 T / M and a single-stage heater temperature of 180.
False twisting was performed at 170 ° C. and a two-stage heater temperature of 170 ° C. to obtain a conjugate fiber partially split in the longitudinal direction of the yarn. A nylon heat-fused yarn of 55 dtex / 10 filament and a nylon spun 30/1 are used as the core yarn.
(One 30th) and prepare 2
A nylon false twisted yarn of 0 dtex / 5 filament and the above-mentioned fused nylon yarn were prepared. Further, as a yarn, a 165 dtex / 48 filament false-twisted conjugate fiber is prepared and supplied to a molding twisting machine. The yarn has a height of 1.5 mm and a linear density of 10 yarns / cm. Is 1
A 306 dtex mall yarn was prepared. Then, it was confirmed by microscopic observation of the yarn that the yarn had a divided shape as shown in FIG. The single fiber fineness of the completely split fiber was 0.3 dtex. The molding yarn obtained above is knitted by using a single circular knitting machine with a diameter of 22 inches and 14 gauge as an insertion yarn as shown in FIG. A knitted fabric having a molding yarn insertion number of 10 yarns / inch and a basis weight of 276 g / m ² was obtained. This was cut into an appropriate size to obtain a wiping cloth.

Comparative Example 1 In Example 1, the height of the fluff of the molding yarn was 0.3 mm.
A wiping cloth of 240 g / m ² was obtained in the same manner as in Example 1, except that the molding yarn had a fineness of 550 dtex.

Comparative Example 2 Knitting was carried out in the same manner as in Example 1 except that the height of the woolen thread of the maul yarn was 5 mm and the mottle yarn having a fineness of 1940 dtex was used.
to obtain a wiping cloth of m ^2.

Comparative Example 3 In Example 1, a molding yarn of 880 dtex was obtained with the linear density of the molding yarn being 5 yarns / cm. This molding yarn is knitted in exactly the same manner as in Example 1 and has a basis weight of 250 g / m.
² wiping cloths were obtained.

Comparative Example 4 A wiping cloth having a basis weight of 310 g / m ² was obtained in the same manner as in Example 1 except that the molding density was 17 yarns / cm and a 2150 dtex molding yarn was used. Was.

Comparative Example 5 A wiping cloth having a basis weight of 267 g / m ² was obtained in the same manner as in Example 1 except that a false twisted yarn of 165 dtex / 72 filaments was used as the flower yarn of the maul yarn.

Comparative Example 6 A polyethylene terephthalate-based polyester obtained by copolymerizing 5.0 mol% of 5-sulfoisophthalic acid (SIP)
8% by mass of polyethylene glycol having a molecular weight of 11,000
The kneaded polyester is used as a sea component as an alkali easily soluble component, and regular bright polyethylene terephthalate is used as an island component (60 islands). A type composite fiber was obtained. The number of false twists is 306
False twisting was performed at 0 T / M, a single-stage heater temperature of 180 ° C., and a two-stage temperature heater of 170 ° C., and the resulting yarn was used as a yarn. A 990 dtex molding yarn was obtained in the same manner as in Example 1. This was taken in a scallop and subjected to alkali weight reduction processing to completely dissolve the sea component, thereby obtaining a maul yarn having a single fiber fineness of 0.08 dtex. A wiping cloth having a basis weight of 220 g / m ² was obtained in the same manner as in Example 1 using the above-described molding yarn.

The wiping properties of the various wiping cloths obtained above were evaluated by the method described above. Table 1 shows the results. In addition, the wiping cloth currently marketed was also evaluated for reference. Reference Example 1
Is a double knit fabric obtained by dissolving a water-soluble fiber at the time of finishing processing to form a microfiber in a loop shape. Reference Example 2 is a cut pile having a height of 1 mm obtained by moquetting using microfiber as a warp. Earth. Further, Reference Example 3 is a double knitted fabric knitted with a smooth structure made of ultrafine fibers.

[0034]

[Table 1]

The wiping property (vertical) is 100 yen coin number 1.
The "0" portion of 00 was wiped off in the vertical direction of "0", and the wiping performance (horizontal) was evaluated by wiping orthogonally to the above. As is clear from Table 1, the wiping cloth of the present invention is superior to the wiping cloths of the comparative example and the reference example in wiping the uneven surface.

[0036]

The wiping cloth of the present invention is a cloth obtained by inserting a specific number of molding yarns for arranging ultrafine fiber bundles, and the wiping cloth made of the cloth has an uneven surface to be cleaned. Particularly, good wiping properties can be obtained even at every corner of the concave portion.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an example of a molding yarn used in the present invention.

FIG. 2 is a schematic cross-sectional view showing an example of a splittable conjugate fiber used in the present invention.

FIG. 3 is a schematic perspective sectional view showing an example of a divided state when FIG.

FIG. 4 is a schematic plan view showing the wiping fabric of the present invention.

FIG. 5 is a schematic cross-sectional view of the wiping cloth material of the present invention.

FIG. 6 is a schematic sectional view showing a form of a conventional wiping cloth.

FIG. 7 is a schematic diagram showing a contact state between a wiping cloth and a surface to be cleaned during wiping.

[Explanation of symbols]

 A: fiber-forming thermoplastic polymer B: fiber-forming thermoplastic polymer incompatible with polymer A 1: core yarn 2: flower yarn 3: height 4: molding yarn 5: ground yarn 6: wiping cloth 7: Cleaning surface

Claims (3)

[Claims] 1. A wiping cloth which is knitted by inserting 8 to 16 molding yarns per inch, wherein the yarn forming the molding yarns has a single fiber fineness of 0.09 to 1.7 dt.
ex fiber, height from the core yarn 0.5-3mm
And a wiping cloth held at a linear density of 7 to 15 fibers / cm. 2. The wiping cloth according to claim 1, wherein the molding yarn is inserted by a floating structure. 3. A wiping cloth using the wiping cloth according to claim 1.