JP2003144368A - Wiping cloth and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide wiping cloth which has excellent water absorptive and water retaining properties, has the extremely outstanding wiping properties to enable a user to wipe away the dirt on a wiping surface without leaving the traces of wiping and water drops and is clean to hardly allow the propagation of bacteria and to provide a method for manufacturing the same. SOLUTION: The wiping cloth is wiping cloth including filament yarns of polyamide fibers of 0.1 o 3.0 dTex in single fiber fineness and 0.01 to 2.0 dTex in single fiber fineness and has projecting parts on the single fiber surfaces of the polyester fibers in SEM photographic observation of 2,000 magnification.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a water-absorbing and water-retaining cloth, which is extremely wipeable and has excellent anti-bacterial properties, and is particularly preferable for household or hospital use. The present invention relates to a wiping cloth used and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, as a wiping cloth for home or hospital, a woven fabric using spun yarn of natural fiber or recycled fiber such as cotton, hemp, and rayon, for example, bleached cloth, Japanese hand towel, old towel, etc. Generally, a cloth having a strong thickness by being thickly sewn and roughened has been used. Wiping cloths made of such materials as natural fibers or recycled fibers are mainly excellent in water absorption and water retention, but the reason is that the fibers themselves constituting the cloth are hydrophilic. , It is easy to absorb water easily and can absorb water easily. In addition, since the yarns that make up the fabric are spun yarns, they are thick and the gaps between the fibers are large, making the fabric bulky. It's easy.

However, in the case of a cloth composed of a material having hydrophilicity, the water taken into the gaps between the fibers is further taken into the inside of the single fiber, and therefore, it is intended that the absorbed water is squeezed hard by hand. However, moisture is not easily discharged and remains inside the fabric. And that water
It is difficult to clean the wiping surface without water droplets and stains because the water droplets remain as stains even if they adhere to or reattach to the wiping surface and are dried.

Further, in the conventional wiping cloth, the short fiber scraps peeled off from the surface of the cloth may be mixed with the water droplets or may remain directly on the wiping surface, and may be re-attached as dirt like the water droplets.

On the other hand, since the synthetic fiber material is hydrophobic, it is difficult to adapt to water, and its water absorption and water retention are inferior to those of natural fibers and recycled fibers such as cotton, hemp and rayon. Therefore, in the case of a fabric made of synthetic fibers, almost no water is taken inside the single fibers.
On the surface or on the measured data, even if it seems that water is absorbed or retained, the water is merely attached to the surface of the single fiber or the fiber bundle or retained in the fiber gap of the fiber bundle. Further, in the synthetic fiber material, when the substrate of the material is hard and the single fibers constituting the woven fabric are thick, when the fibers are squeezed by hand, the fibers themselves are not easily crushed Is not easily discharged by squeezing it by hand, and is also pushed out of the inside of the fabric by the wiping pressure when wiping the wiping surface, forming water droplets and adhering or re-adhering to the wiping surface and drying. Later, it has been shunned as an unsuitable cloth for wiping because of a defect that it has no wiping effect.

In recent years, a knitted fabric using an ultrafine synthetic fiber has been proposed as a wiping cloth. For example, JP-A-61
Japanese Patent Laid-Open No. 103428/1998 proposes a cloth composed of ultrafine fibers having a single fiber fineness of 0.9 denier or less and characterized by having bulkiness.
Japanese Patent No. 211364 proposes an entangled knitted woven fabric composed of ultrafine fibers having a single fiber fineness of 0.2 d or less and fibers having a single fiber fineness of 0.5 to 10 d, and a method for producing the same. However, these fabrics are not only hard to the touch, but also slippery against glass-based materials,
On the contrary, there was a problem that the workability of wiping was not always sufficient without slipping. In the case of a knitted fabric, deformation due to the size of elasticity peculiar to the knitted fabric or deformation after stretching, which is called warai, is a drawback, and slippage occurs, and sufficient wipeability is obtained due to the roughness of the stitches. There was a problem such as not.

Antibacterial performance is an indispensable performance requirement for wiping cloths for general households, hospitals, etc., but such wiping cloths are generally used by repeating wiping / washing, and in particular, In the hospital, many industrial washings at 60 to 80 ° C. are usually repeated, and therefore, there is no one having sufficient durability and antibacterial property in the prior art. Moreover, in recent years, methicillin-resistant Staphylococcus aureus (hereinafter referred to as M
In-hospital infection due to (RSA) has become a problem, and in reality, such a wiped cloth is required to have both high antibacterial performance and durability.

[0008] Further, Japanese Patent Laid-Open No. 2000-
There is 248480 publication. In the proposal, high antibacterial property was obtained, but it was not always sufficient in terms of wiping-off property.

[0009]

SUMMARY OF THE INVENTION In view of the background of the prior art described above, the present invention is excellent in water absorption and water retention, and is an extremely excellent wiping capable of wiping without leaving a wiping mark or water drop on the wiping surface. It is intended to provide a clean wiping cloth which has a removability and in which bacteria are hardly proliferated, and a manufacturing method thereof.

[0010]

The present invention employs the following means in order to solve the above problems.
That is, (1) a fabric including a filament yarn of a polyamide fiber having a single fiber fineness of 0.1 to 3.0 dTex and a polyester fiber having a single fiber fineness of 0.01 to 2.0 dTex, and 2000 times In the SEM photograph observation, the wiping cloth having a convex portion on the surface of the single fiber of the polyester fiber.

(2) The wiping cloth according to (1) above, wherein the height of the convex portions is 0.1 μm or more, and the number is one or more per 40 μm.

(3) A fabric composed of a filament yarn having a total fineness of 30 to 400 dTex and a twist number of 100 to 800 turns / m, which is made of the above-mentioned polyamide fiber and polyester fiber, and the filament yarn Contains a pyridine-based antibacterial agent, The wiping cloth according to (1) or (2) above.

(4) The wipe cloth according to any one of (1) to (3) above, wherein the polyamide fiber occupies 10 to 90% by weight of the entire filament yarn.

(5) In the cross section of the wiping cloth, the polyester fibers are richly present in the outer layers on the front and back surfaces, (1)
The wiping cloth according to any one of to (4).

(6) The wiping cloth according to any one of the above (1) to (5), which has a thickness measured by JIS L-1096 of 0.8 mm or more.

(7) The water absorption rate measured according to JIS L-1096 is 1 second or less, (1)
~ The wiping cloth according to any one of (6).

(8) The wiping cloth according to any one of (1) to (7) above, wherein the water retention measured by JIS L-1096 is 200% by weight or more.

(9) The wiping cloth according to any one of the above (1) to (8), wherein the polyester fiber has a fiber structure composed of a combination of a fineness and a fineness. .

(10) The wiping cloth according to any one of (3) to (9), wherein the pyridine antibacterial agent is exhausted by the polyester fibers.

(11) The wiping cloth according to any one of (3) to (10) above, wherein the pyridine antibacterial agent is 2-pyridylthiol-1-oxide zinc.

(12) The wiped cloth according to any one of the above (3) to (11), wherein the wiped cloth has an antibacterial property of 2.5 or more after about 50 industrial washings. .

(13) A fabric is formed by using a filament yarn obtained by twisting a composite fiber composed of a polyamide resin and a polyester resin, and then the composite fiber constituting the fabric is subjected to a peeling treatment, After separating the polyamide resin component and the polyester resin component of the composite fiber,
A method for producing a wiped cloth, which comprises subjecting the cloth to an antibacterial processing treatment containing a pyridine antibacterial agent to impart antibacterial properties.

(14) The method for producing a wiped cloth according to the above (13), wherein a combination treatment of a dyeing treatment and an antibacterial treatment containing a pyridine antibacterial agent is applied to impart antibacterial properties.

(15) The above-mentioned (13) or (14), which is characterized by imparting antibacterial properties by performing a combination of a dyeing treatment and an antibacterial treatment containing a pyridine antibacterial agent.
The method for producing a wiped cloth according to item 4.

(16) The method for producing a wiped cloth according to any one of (13) to (15), wherein the pyridine antibacterial agent is 2-pyridylthiol-1-oxide zinc. .

(17) The peeling treatment is a high pressure water flow treatment of 3 to 30 MPa, and the above (13) to
The method for producing a wiped cloth according to any one of (16).

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION With regard to materials suitable as a wiping cloth used for daily cleaning in general households and hospitals, the present inventors firstly describe water absorption, water retention, wiping properties, stain removability, As a result of diligent studies on the excellent wiping workability and antibacterial property, and the durability of these properties, as a result, it was composed of split fiber type composite filament yarn composed of polyamide fiber and polyester fiber. When a cloth such as a knitted woven fabric was used and split with a specific splitting method, and a specific antibacterial agent was added thereto, it was clarified that these problems can be solved all at once.

The material forming the wiping cloth of the present invention is a filament yarn made of polyamide fiber and polyester fiber.

In the case of a spun yarn such as a conventional wiping cloth or a yarn having some fluffing, the short fibers or fluff adheres to the object to be wiped during wiping,
Since it remains after the wiping, the dirt is scattered instead of being wiped off. However, in the case of the filament yarn of the present invention, such a problem does not occur.

The filament yarn constituting the cloth has a single fiber fineness of 0.1 to 3.0 dTex, preferably 0.2 to 2.0 dTex, and more preferably 0.3 to.
Polyamide fiber of 1.0 dTex and 0.01-2.
A filament made of polyester fiber having 0 dTex, preferably 0.05 to 1.0 dTex, more preferably 0.1 to 0.5 dTex, preferably a filament made of exfoliated composite fiber is used. When the single fiber fineness of the polyamide-based fiber is less than 0.1 dTex, it becomes too soft and clings to the hand, resulting in poor wiping workability. On the contrary, when it exceeds 3 dTex, the single yarn fineness increases. Since it is too much, the wiping performance is inferior. On the other hand, when the single yarn fineness of the polyester is less than 0.01 dTex, when the wiping / selection is repeated, the single yarn breakage frequently occurs, the quality is immediately deteriorated, and conversely, when it exceeds 2.0 dTex, There is a problem that the cloth is hard and difficult to draw.

The cross-sectional shape of the polyamide fiber and the polyester fiber is not particularly limited, but preferably one or more having an acute-angled deformed cross section,
A large gap can be created when using twisted yarn,
It is advantageous in terms of wiping properties, water absorption, water retention, and the like.

The ratio of the polyamide fiber and the polyester fiber contained in the wiping cloth depends on the composite ratio of the composite fiber at the time of making the cloth, but the ratio of the polyamide fiber component is the composite fiber. The total amount of fibers is preferably 10 to 90% by weight, more preferably 20 to 80%.
%, Particularly preferably 30 to 70% by weight, and the balance is the polyester fiber component. When the polyamide fiber component is less than 10% by weight, the polyester fiber component becomes too rich, resulting in a hard texture as a whole, and as a result, both the wiping performance and the workability are
Not enough effect. On the other hand, when the polyamide-based fiber component exceeds 90% by weight, the polyamide-based fiber component becomes too rich, resulting in lack of dimensional stability, a dull, fluffy texture, and sufficient wiping performance and workability. Can not be obtained.

The arrangement of the polyamide-based fibers and the polyester-based fibers is such that the polyester-based fibers are richly present in the outer layers on the front and back surfaces in the cross section of the wiping cloth. From the above, such a form is preferably a composite fiber, preferably a dyeing process of a knitted fabric made of split fiber type composite fibers, by a heat history of a step of antibacterial processing, for example, with a polyamide fiber as a shaft and a polyester fiber. It is formed so as to surround it. Since the polyester fibers are dispersed and exposed on the surface of the wiping cloth in this manner, the wiping property can be more effectively exhibited.

In addition, the surface of the polyester fiber after splitting has a convex portion 1 when observed with a SEM photograph at a magnification of 2000 (see FIG. 1), and the height of the convex portion is a maximum height of 0.1 μm or more. The quantity is one or more per 40 μm. The shape of the convex portion is not particularly limited as long as it has a height on the polyester surface and exists. In the case of not having a convex portion, since the surface is smooth, one end, both of the fibers separated and separated try to return to the cross-sectional shape before the division,
The bulkiness is lost, and as a result, there is a problem that water retention and wiping properties are insufficient.

In the present invention, the total fineness including the polyamide fiber and the polyester fiber constituting the filament yarn is 30 to 400 dTex, preferably from the viewpoint of the bulkiness, texture and wiping property of the wiping cloth. 70-350
The dTex is preferably 100 to 300 dTex. Furthermore, in order to disperse the monofilament appropriately on the surface of the fabric, the filament yarn is preferably 10
0 to 800 times / m, twisting preferably 200 to 700 times / m
It is better to twist m. That is, the twisting torque causes the multifilament yarn to be twisted, and the individual filaments are separated into individual filaments and behave differently. The filaments are dispersed so as to fill the gaps between the adjacent fibers and the filaments. Therefore, the wiping area becomes large. Further, since the surface of the cloth sticks to the wiping surface like a suction cup, it is possible to scrape out dirt that has entered a slight gap. In addition,
If the total fineness of the filament yarn becomes too small, the bulkiness of the wiping cloth becomes small, and a sufficient amount of water absorption cannot be obtained. Further, if the total fineness becomes too large, the wiping cloth becomes hard and the workability deteriorates. That is, when the number of twists of the filament yarn becomes less than 100 times / m, the multifilament yarns are aligned in a straight line,
Since the cloth is divided vertically and horizontally, the wiping area on the surface of the cloth is reduced, and wiping traces are likely to remain. On the other hand, when the number of twists is more than 800 turns / m, the multifilament yarn is restrained by the twist, and it is difficult for the multifilament yarns to be separated into individual filaments, and the filaments tend to be lumped together, resulting in poor wipeability.

In the wiping cloth of the present invention, two or more kinds of filament yarns having different total fineness can be interwoven. For example, a 100 dTex filament yarn can be used for the warp yarn and a 270 dTex filament yarn can be used for the weft yarn, and can be interwoven.

The form of such a wiped cloth may be either a knitted fabric or a woven fabric, but a woven fabric which is considered to have good dimensional stability is preferable. As the woven structure, a structure having a bulge in the thickness direction, for example, a double woven structure is preferably used in order to secure wiping workability and bulkiness. The double weave design here is a woven fabric in which the front design and the back design are partially intersected by the front yarn and the back yarn, and the number of the intersecting points is preferably 10 to 40 co / cm ^2. What is good is. If the crossing point is more than 40 pieces / cm ² , there will be no gap between the front and back tissues, and not only the necessary bulge will not be obtained, but also a plate-like hard woven fabric will be obtained, which is easy to wipe and wipe. Considering the workability, drawability and water retention, the crossing point is 2
It is more preferably 0 to 30 co / cm ² . The structure for ensuring the bulkiness of such a wiped cloth is not limited to the above-mentioned double weave, and may be a pile woven fabric or a honeycomb woven fabric without any problem.

The wiping cloth of the present invention is also characterized in that it has an antibacterial performance excellent in industrial washing durability. Conventionally, various investigations have been made on cloths for imparting antibacterial properties, such as cloths for general clothing, and the water washability at home has reached a considerable level, but usually 60
No one has been found to show sufficient durability under the condition of repeating industrial washing at .about.85.degree. C. for a large number of times. In particular, a hospital wipe cloth is a cloth that is repeatedly wiped / washed with dirt, and requires durability that cannot be imagined with a cloth for general clothing. The present invention provides a product that exhibits sufficient durability even under conditions in which such industrial washing is repeated many times.

In order to impart such an antibacterial performance excellent in industrial washing durability, an antibacterial agent having an excellent exhaustion ability is used for the filament yarn, especially the polyester fiber. A pyridine type antibacterial agent is used as such an antibacterial agent. Among them, especially 2-pyridylthiol-1-oxide zinc has been found to have the property of being exhausted due to its dramatic durability, and in particular, to have excellent exhaustion ability for polyester fibers. . Such an antibacterial agent having a small average particle size is preferably used from the viewpoint of exhaustion property, specifically 2 μm or less, more preferably 1 μm or less.
Those having an average particle size of less than or equal to μm, particularly preferably less than or equal to 0.7 μm are used.

In view of the exhaustion ability of such an antibacterial agent, the larger the fineness of the polyester fiber, the larger the function thereof,
It is possible to provide the one with excellent durability.
That is, as the polyester fiber component used,
From the viewpoint of antibacterial property, it is preferable to dispose a polyester fiber having a large fineness within a range that does not impair the wiping property. That is, in that case, as the polyester fiber,
A fiber having a fiber structure composed of a combination of large fineness and fineness is used.

Such a wiped cloth according to the present invention is an industrial laundry 50.
The MRSA value before and after the rotation is preferably 2.5 or more, more preferably 3.0 or more, which has excellent durability. When the MRSA value is less than 2.5, sufficient antibacterial properties cannot be obtained, and even when the initial performance is 3.0 or more, if the MRSA value is less than 2.5 after washing, durable antibacterial properties are not obtained. It cannot be said to have it, and it cannot be said to have practicality.

The wiping cloth of the present invention has a thickness of 0.8.
A thickness of at least mm is preferable in terms of drawability and handleability. Further, as characteristics relating to the wiping performance, it is preferable that the water absorption rate is 1 second or less and the water retention amount is 200% by weight or more.

Next, an example of the method for manufacturing the wiped cloth of the present invention will be described. First, as the composite fiber, prepare a multi-filament yarn made of split fiber type composite fiber such as sea-island type, peeling split type and special blend type, which can be split later.
The two are aligned and a difference in yarn length is given as required to form a composite yarn form. As means for forming such a composite yarn, means such as drawing, twisting and entanglement can be used. The obtained composite yarn is twisted to be a yarn for knitted fabric.

Next, this composite yarn is used for knitting and weaving, and the obtained knitted fabric is subjected to specific peeling and splitting treatment to obtain a finely knitted knitted fabric. As the splitting treatment and the fineness-reducing treatment, a chemical peeling treatment is generally used, and a method such as dissolving and removing one component is used. For example, by rubbing while immersing the composite fiber in a chemical,
Splitting and fineness can be achieved. According to this method, the chemical penetrates into the boundary surface of the polyamide fiber component and the polyester fiber component, peeling starts, and it is completely peeled off by rubbing, and the results of evaluating the wiping performance by actually proceeding the processing are not always sufficient. It was In order to elucidate the cause, the cross section of the composite fiber after division was observed with a 1000 times SEM observation photograph. As a result, 50 to 80% were divided, but undivided portions remained. As a result of observing the surface after splitting with a SEM observation photograph at a magnification of 2000, the surface of the polyester fiber was smooth, and both fibers that had been exfoliated at one end returned to the cross-sectional shape before splitting, and swelling was insufficient. Yes, as a result, it was found that the wiping performance was insufficient. The reason why the surface of the polyester fiber is smooth is that the chemical penetrates into the boundary surface of the polyamide fiber component and the polyester fiber component, and at the same time, the surface of the polyester fiber is reduced and the polyester fiber is reasonably peeled off.

As a method for improving the problem, 3 to 30 is used.
When the separation separation treatment was performed with a high-pressure water stream of MPa, all of the separation composite fibers were divided, and a swelling was sufficient, and a wiping cloth having a sufficient wiping performance was obtained. The cause of forming the convex portion on the surface of the polyester fiber is generated by forcibly peeling the boundary between the polyamide fiber component and the polyester fiber component.

The water pressure is preferably 4 to 25 MPa, and when it is less than 3 MPa, the peeling is insufficient, and 3
If it exceeds 0 MPa, the water pressure is too strong, which causes a problem such as tearing of the cloth.

Next, the finely knitted woven fabric is subjected to a combined treatment of a dyeing treatment and an antibacterial treatment containing a pyridine antibacterial agent. The dyeing treatment and the antibacterial treatment can be performed simultaneously or independently, but a method of treating both at the same time is preferably performed.

In the antibacterial treatment, it is important to use the above-mentioned specific antibacterial agent, and by adding the antibacterial agent, the antibacterial performance having excellent durability can be imparted. Yes, such wipes are suitable for use in glass, metals, plastics in general homes and hospitals, and around furniture, washroom sinks, bath tubs, tables, and all other materials, especially those wet parts. And shows excellent wiping performance.

[0049]

The present invention will be described in more detail based on the following examples. The evaluation method in the examples will be described below. (1) The thickness of the knitted fabric, the water absorption rate, and the water retention amount were all measured based on JIS-L1096, and the water retention amount was obtained by immersing the sample in water for 2 minutes, then pulling up the sample and dripping for 1 minute. The later weight increase rate was evaluated. (2) Method for measuring convex portion of polyester fiber surface After metal evaporation of a sample using an E101 ion sputtering device manufactured by Hitachi Ltd., the metal evaporated sample was used by Hitachi Ltd.
It was mounted on a scanning electromicroscope manufactured by and the photograph of the sample surface was observed at 2000 times. The height and quantity of the convex portions were measured from the obtained photographs. (3) Wipeability evaluation method Silicone oil SH200 (Toray Dow Corning
Approximately 5 mg (manufactured by Silicone Co., Ltd.) was dropped on a glass plate with an injection needle and fixed to one end face of a cylindrical load having a diameter of 45 mm and a weight of 1 kgf through a woven fabric having a thickness of approximately 1 mm (wiping cloth). ) On the glass plate, 1m / min
Move at the speed of and wipe off the silicone. Next, a dry copying toner (SF-76T: manufactured by Sharp Corporation) is sprinkled on a glass plate, and the toner is compressed with air (1 Kg).
/ Cm ² ). Next, the residual toner on the glass plate is peeled off by sticking Cellotape (registered trademark of Sekisui Chemical Co., Ltd.) on the surface of the glass plate, and the degree of toner attached to the Cellotape is determined. It was visually evaluated on a scale of 5 on the scale that no toner was adhered at all (glass plate was completely wiped off of silicone) to be grade 5, and if a very large amount of toner remained was grade 1. (4) Evaluation method of wiping workability The sensitivity was evaluated by 10 panelists. The evaluation criteria are as follows.

◯: Wiping workability is good.

Δ: Wiping workability is rather poor.

X: Wiping workability is poor. (5) Washing method Using a drum dyeing machine, Kao's detergent "Zab" 2 g /
1, hydrogen peroxide water (35% for industrial use) 3 cc / l, sodium percarbonate 1.5 g / l, temperature 85 ± 2 ° C., bath ratio 1:20
Was washed for 15 minutes, then drained, dehydrated, and washed with overflow water for 10 minutes. After washing with water, it was dried for 20 minutes using a tumbler dryer. This was one wash. (6) Antibacterial test method A unified test method was adopted as the test method, and MRSA clinical isolates were used as test cells. The test method was as follows: A sterilized sample cloth was poured with the above-mentioned broth suspension of the test bacteria, and the temperature was kept at 37 ° C. in a sealed container for 1
The number of viable cells after culturing for 8 hours was measured, the number of cells was calculated with respect to the number of cells, and the following criteria were followed.

Under the condition of log (B / A)> 1.5, lo
g (B / C) was used as the difference in the number of bacteria increase and decrease, and 2.5 or more was taken as the pass level.

Here, A is the number of bacteria that were dispersed and recovered immediately after inoculation of the unprocessed product, B is the number of bacteria that were dispersed and recovered after 18 hours of culture of the unprocessed product, and C is the number of bacteria that were dispersed and recovered after 18 hours of culture of the processed product. Show.

Example 1 As a finely densifiable composite fiber, one 0.91 dTex star-shaped star-shaped polyamide (indicated by reference numeral 2 in FIG. 2) and a 0.26 dTex triangular polyester surrounding it (see FIG. The multifilament yarn of 55 dTex, 18 filaments, which has a cross section of 8 single filaments (denoted by 3 in 2), is aligned 500 times / m.
It was twisted and twisted with a rapier loom to woven a flat double woven fabric having a vertical density of 83 yarns / in and a horizontal density of 63 yarns / in to obtain a raw machine.

This greige machine was treated with a high-pressure water stream of 10 MPa to separate the polyamide and polyester from each other. Peeling Divided polyester fiber monofilament surface 2000
Observation of a double SEM photograph (Fig. 1) reveals that the polyester surface has one or more protrusions with a height of 0.6 µm or more per 40 µm, and the cross-sectional shape is peeled off by observing the SEM photograph of 1000 times (Fig. 2). All the fibers of the mold fiber were well divided. The total fineness of the filament yarn constituting the obtained woven fabric is 213 dTex, the single fiber fineness of polyamide is 0.91 dTex, the single fiber fineness of polyester is 0.26 dTex, and the proportion of polyamide is by weight. It was about 34% of the whole.

Next, under ordinary polyester dyeing conditions,
2-pyridylthiol-1 as an antibacterial agent at the same time as the dye
-Add 0.5% owf of zinc oxide and carry out 4 at 130 ° C.
The fabric was treated for 0 minutes.

The woven fabric obtained was supple and had a thickness of 1.0.
It had a volume of mm and a volume, excellent dimensional stability, good wiping performance and wiping workability, and exhibited excellent durability with an antibacterial performance of 5.5 even after about 50 industrial washings. The results are shown in Table 1.

Example 2 As a finely densifiable composite fiber, one 0.91 dTex Yagiha star-shaped polyamide and 0.26 d surrounding it.
Multifilament yarn of 55dTex, 18 filaments having a monofilament cross-section consisting of 8 Tex triangular polyesters, 4 pieces are aligned and twisted 600 times / m, and a rapier loom has a vertical density of 65 pieces / in. , Horizontal density 4
A flat double woven fabric of 4 yarns / in was woven into a raw fabric.

This greige machine was treated with a high-pressure water stream of 8 MPa to separate the polyamide and polyester from each other. The SEM photograph (Fig. 1) of the monofilament surface of the separated and separated polyester fibers was observed at a magnification of 2000 (Fig. 1). As a result, one or more convex portions having a height of 0.6 µm or more per 40 µm were formed on the polyester surface, and the magnification was 1000 times. The cross-sectional shape observed by the SEM photograph (FIG. 2) was such that all the peelable fibers were sufficiently divided. The total fineness of the filament yarns constituting the obtained woven fabric is 213 dTex, the single fiber fineness of polyamide is 0.91 dTex, the single fiber fineness of polyester is 0.25 dTex, and the proportion of polyamide is by weight. It was about 34% of the whole.

Next, under ordinary polyester dyeing conditions,
0.5% owf of 2-pyridylthiol-1-oxide zinc was added at the same time as the dye, and antibacterial processing was performed at the same time as the dyeing.

The obtained cloth was supple and had a thickness of 0.
With a volume of 9 mm, it has excellent dimensional stability, good wiping performance and wiping workability, and after about 50 industrial washings,
The antibacterial performance was 5.5, exhibiting excellent durability performance. The results are shown in Table 1.

COMPARATIVE EXAMPLE 1 As a finely densifiable composite fiber, one 0.91 dTex star-shaped star-shaped polyamide and 0.26 d surrounding it.
Fifty multi-filament yarns of 50 dTex, 18 filaments having a monofilament cross-section consisting of eight Tex triangular polyesters are aligned and twisted 50 times / m.
Using a rapier loom, a flat double woven fabric having a vertical density of 65 pieces / in and a horizontal density of 44 pieces / in was woven to obtain a raw machine.

This greige was treated with an aqueous solution of sodium hydroxide, and the polyamide and polyester were separated and separated.
The surface of the separated polyester monofilament was observed with a SEM photograph of 2000 times (Fig. 3). Both fibers had smooth surfaces, and the SEM photograph of 1000 times (Fig. 4) showed that the cross-sectional shape was a peel type fiber. 20% were undivided.
The total fineness of the filament yarns constituting the obtained woven fabric is 2
13dTex, polyamide single fiber fineness is 0.9
1dTex, polyester single fiber fineness is 0.2
It was 5 dTex, and the proportion of polyamide was about 34% by weight.

Next, under ordinary polyester dyeing conditions,
Simultaneously with the dye, 6- (2-thiophenecarbonyl) -1
H-2-benzimidazole methyl carbamate was added to 0.
5% owf was added and the treatment was performed at 130 ° C. for 40 minutes.
Although the obtained cloth is a double woven cloth, it has a thickness of 0.6 mm and has no bulge and becomes a thin flat cloth.
The water absorption amount was small, the slipperiness against the object to be wiped was poor, and the performance as a wiping cloth was poor such as the wiping property, the wiping workability, and the handling property. The antibacterial performance was poor both before and after washing. The results are shown in Table 1.

COMPARATIVE EXAMPLE 2 As a finely densifiable composite fiber, one 0.91 dTex Yakuba star-shaped polyamide and 0.26 d surrounding it.
Four multifilament yarns of 55dTex, 18 filaments having a monofilament cross-section consisting of 8 Tex triangular polyesters are aligned and twisted 1000 times / m, and a rapier loom has a vertical density of 83 / in. , Horizontal density 64
A book / in flat double woven fabric was woven into a raw fabric.

This greige machine was treated with an aqueous solution of sodium hydroxide, and the polyamide and polyester were separated and separated.
The surface of the separated polyester monofilament was observed with a SEM photograph of 2000 times (Fig. 3). Both fibers had smooth surfaces, and the SEM photograph of 1000 times (Fig. 4) showed that the cross-sectional shape was a peel type fiber. 20% were undivided.
The total fineness of the filament yarns constituting the obtained woven fabric is 2
13dTex, polyamide single fiber fineness is 0.9
1dTex, polyester single fiber fineness is 0.2
It was 5 dTex, and the proportion of polyamide was about 34% by weight.

Next, under ordinary polyester dyeing conditions,
At the same time with the dye, 0.5% owf of 5-chloro-2-methyl-4-isothiazolin-3-one was added, and 130 ° C ×
A treatment of 40 minutes was performed.

The obtained cloth had a good sliding property with respect to the object to be wiped, but had a thickness of 0.5 mm and had no bulge and had a trace of wiping. The antibacterial performance was good before washing, but the durability after washing was poor. The results are shown in Table 1.

[0070]

[Table 1]

[0071]

EFFECTS OF THE INVENTION According to the present invention, it has excellent water absorption and water retention properties, and has excellent wiping properties and wiping workability capable of wiping without leaving a wiping mark or water droplets on the wiping surface. It is possible to stably provide a wiped cloth having excellent antibacterial performance with excellent industrial washing durability, and glass for general households, hospitals, etc.,
To provide metal, plastic, and all materials such as furniture and sinks around sinks, bath tubs, tables, etc., especially those that are wet, and exhibit excellent wipeability. You can

[Brief description of drawings]

FIG. 1 is an SEM photograph showing the shape of fibers on the surface of polyester fibers in an example of the present invention.

FIG. 2 is an SEM cross-sectional photograph showing the shapes of polyester fiber and polyamide fiber in the example of the present invention.

FIG. 3 is an SEM photograph showing the shape of fibers on the surface of polyester fibers in a comparative example of the present invention.

FIG. 4 is an SEM cross-sectional photograph showing the shapes of polyester fiber and polyamide fiber in a comparative example of the present invention.

[Explanation of symbols]

1: convex

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) D03D 15/00 D03D 15/00 E D06C 29/00 D06C 29/00 A D06M 13/355 D06M 13/355 / / D06M 101: 34 101: 34 F-term (reference) 3B074 AA02 AA07 AB01 AC02 AC03 3B154 AA07 AA08 AA16 AB20 BA60 BB35 BF02 DA07 DA30 4L033 AA07 AA08 AB02 AB05 AB06 BA57 BA98 4L048 AA20 AA24 AA30 AA35 AA37 AA41 AA48 AB07 AB11 AB12 AB16 BA09 CA00 CA07 CA15 DA21 EA00 EB00

Claims (17)

[Claims] 1. A polyamide fiber having a single fiber fineness of 0.1 to 3.0 dTex and a single fiber fineness of 0.01 to 2.0 dT.
A wipe cloth comprising a filament yarn of a polyester fiber of ex, which has a convex portion on the surface of the polyester single fiber when observed with an SEM photograph at a magnification of 2000. 2. The height of the convex portion is 0.1 μm or more,
The wiping cloth according to claim 1, wherein the number is one or more per 40 μm. 3. The total fineness of the polyamide fiber and the polyester fiber is 30 to 400 dTex, and the number of twists is 1.
The wiping cloth according to claim 1 or 2, wherein the wiping cloth comprises a fabric composed of filament yarns of 0 to 800 times / m, and the filament yarns contain a pyridine-based antibacterial agent. 4. The wiping cloth according to claim 1, wherein the polyamide fiber occupies 10 to 90% by weight of the whole filament yarn. 5. The wiping cloth according to claim 1, wherein the cross section of the wiping cloth is rich in the polyester fibers in the outer layers on the front and back surfaces. 6. The wiping cloth according to any one of claims 1 to 5, wherein the knitted fabric has a thickness of 0.8 mm or more as measured by JIS L-1096. 7. The wiping cloth according to any one of claims 1 to 6, wherein the water absorption rate measured by JIS L-1096 is 1 second or less. 8. The water retention amount measured according to JIS L-1096 is 200% by weight or more, and
The wiping cloth according to any one of 7. 9. The wiping cloth according to any one of claims 1 to 8, wherein the polyester fiber has a fiber structure composed of a combination of a large fineness and a fineness. 10. The wiping cloth according to any one of claims 3 to 9, wherein the pyridine antibacterial agent is exhausted by the polyester fibers. 11. The wiping cloth according to any one of claims 3 to 10, wherein the pyridine antibacterial agent is 2-pyridylthiol-1-oxide zinc. 12. The antibacterial performance is 2.5 or more after about 50 times of industrial washing, wherein the antibacterial performance is 2.5 or more.
1. The wiping cloth according to any one of 1. 13. A fabric is formed by using a filament yarn formed by twisting a composite fiber composed of a polyamide resin and a polyester resin, and the composite fiber constituting the fabric is subjected to a peeling treatment to form the composite. After separating the polyamide resin component and the polyester resin component of the fiber from each other, the cloth is subjected to an antibacterial processing treatment containing a pyridine antibacterial agent to give an antibacterial property, thereby producing a wipe cloth. Method. 14. The method for producing a wiped cloth according to claim 13, wherein a combination of a dyeing treatment and an antibacterial treatment containing a pyridine antibacterial agent is applied to impart antibacterial properties. 15. The method for producing a wiped cloth according to claim 13, wherein a combination treatment of a dyeing treatment and an antibacterial treatment containing a pyridine antibacterial agent is applied to impart antibacterial properties. 16. The method for producing a wiped cloth according to claim 13, wherein the pyridine antibacterial agent is 2-pyridylthiol-1-oxide zinc. 17. The method for producing a wiped cloth according to claim 13, wherein the peeling treatment is a high pressure water flow treatment of 3 to 30 MPa.