JP4742819B2 - Wiping cloth and manufacturing method thereof - Google Patents

Description

  INDUSTRIAL APPLICABILITY The present invention is a wiping cloth having excellent water absorption, water retention, and wiping properties, and having excellent washing durability and high antibacterial and wiping properties, and is widely used as a wiping cloth for industrial use or general household use. The present invention relates to a wiping cloth that is used in the present invention and that is effective in both wet and dry applications and a method for manufacturing the same.

  Conventionally, industrial wiping fabrics or general household and hospital wiping fabrics have an effect of cleaning a non-wiping surface by wiping off dust, dust and artificial dirt.

  In general, fabrics using spun yarns of natural fibers or recycled fibers such as cotton, hemp, and rayon have been used as industrial wipes or general household and hospital wipes. According to the cloth, it is mainly excellent in water absorption and water retention, and since the fiber itself is hydrophilic, it is easy to become familiar with water and can easily absorb moisture and dirty water. It is easy to retain dirty water. However, the moisture or dirt water taken into the gaps between the fibers or inside the single fiber is not easily discharged even if it is intended to be squeezed hard by hand, and remains inside the fabric. For this reason, it reattaches to the non-wiping surface, and on the contrary, it leaves a stain, making it difficult to clean the non-wiping surface.

  On the other hand, since synthetic fiber materials are hydrophobic, they are not easily adapted to water, and are inferior in water absorption and water retention compared to natural fibers such as cotton, hemp and rayon and regenerated fibers. Therefore, almost no moisture or dirty water is taken into the single fiber and is easily discharged by squeezing by hand. However, it is known that the wiping effect can be obtained only when moisture is interposed, and various fabrics (knitted fabrics) made of synthetic fibers with improved water absorption and water retention are used as wiping fabrics. It has been proposed (see, for example, Patent Documents 1 to 5).

  However, although Patent Document 1 proposes a wiping material in which a fabric made of ultrafine filament yarn is arranged on at least one side, no studies on a multilayer structure or a napped structure or a wet study have been made.

  Further, Patent Document 2 proposes a wiping cloth made of crimped ultrafine fibers, but has not studied a multilayer structure or a napped structure.

  In Patent Document 3, although a raised fabric in which a fabric surface composed of ultrafine fiber surfaces is raised is proposed, no investigation on a multilayer structure has been made.

  Moreover, in patent document 4, although the high-density fabric comprised by the ultrafine fiber is proposed, examination regarding a multilayer structure or a napped structure is not made.

Further, in Patent Document 5, although a wiping base fabric in which long ultrafine fiber napping and short thick fiber napping are mixed is proposed, no study on a multilayer structure has been made.
JP 62-217933 A Japanese Patent Laid-Open No. 2-139449 JP-A-4-65557 Japanese Patent Laid-Open No. 6-184928 JP 2004-308025 A

  According to various studies by the present inventors, water absorption and water retention have a multi-layer structure, and dirt has a structure in which nap is arranged on at least one side of a fabric composed of ultrafine fibers and other fibers. It has been found that there is an effect of cleaning the non-wiping surface in both wet and dry applications, and the present invention has been achieved.

  Accordingly, an object of the present invention is to solve the above-mentioned conventional problems, and is excellent in water absorption, water retention and wiping properties, and excellent in washing durability, antibacterial properties and wiping properties. It is an object of the present invention to provide a wiping cloth which is a high wiping cloth, is widely used as a wiping cloth for industrial use or general household use, and is effective in both wet and dry use.

In order to achieve the above-described object, the present invention adopts the following configuration. That is,
(1) Synthesis of 50 to 80% by weight of ultrafine synthetic filament fibers (A) having a single fiber fineness of 0.001 dtex or more and less than 1.0 dtex, and a single fiber fineness of 1.0 to 10 dtex A wiping cloth comprising a fabric in which the filament fiber (B) is formed in a multilayer structure by 50 to 20% by weight and having napped on at least one side.

  (2) The fabric formed in the multilayer structure is bound by the synthetic filament fiber connecting the multilayer structure, and the thickness of the synthetic filament fiber connecting the multilayer structure is 0.1 to 10 decitex The wiping cloth according to (1), characterized in that it is characterized in that

  (3) The wiping according to either (1) or (2), wherein the ultrafine synthetic filament fiber (A) and the synthetic filament fiber (B) are made of a polyester fiber and / or a polyamide fiber. cross.

  (4) The napping is 50 to 80% by weight of ultrafine synthetic filament fiber (A) having a single fiber fineness of 0.001 dtex or more and less than 1.0 dtex, and a single fiber fineness of 1.0 dtex or more and 10 dtex or less. The wiping cloth according to any one of (1) to (3), wherein the synthetic filament fiber (B) is composed of 50 to 20% by weight.

  (5) The wiping cloth according to any one of (1) to (4) above, wherein the length of the raised hair is 0.1 mm to 10 mm.

  (6) The wiping cloth according to any one of (1) to (5), wherein the thickness is 0.5 to 1.5 mm.

  (7) The wiping cloth according to any one of (1) to (6) above, which contains a pyridine antibacterial agent.

  (8) The wiping cloth according to any one of (1) to (7), wherein the water retention rate is 200 to 400% by weight.

  (9) A composite synthetic fiber having a sea-island structure or a peeling structure and a plurality of ridges using a synthetic fiber thicker than the single fiber fineness of the composite synthetic fiber after the sea component removal treatment or the peeling treatment of the composite synthetic fiber. Manufacturing a wiping cloth characterized in that a fabric formed by weaving a warp knitting machine or a weaving machine is processed in hot water or an alkaline solution and then subjected to sea component removal treatment or peeling treatment, and then at least one side is raised. Method.

  ADVANTAGE OF THE INVENTION According to this invention, it is a wiping cloth excellent in water absorption, water retention, and wiping property, and excellent in washing durability, and having high antibacterial and wiping properties, and is an industrial or general household wiping cloth. As such, a wiping cloth that is widely used and that is effective in both wet and dry applications can be provided.

  Hereinafter, the present invention will be described in more detail.

  The wiping cloth of the present invention has a multilayer structure in order to provide water absorption and water retention, and napped on at least one side of a fabric composed of ultrafine synthetic filament fibers and other synthetic filament fibers in order to scrape or wipe off dirt. Due to the arrangement, the effect of cleaning the non-wiping surface in both wet and dry applications was obtained.

  The multi-layered fabric of the present invention is a fabric composed of two or more layers, or a fabric composed of knitted fabric, non-woven fabric, etc., and the number of layers is not particularly limited, but two layers of a surface layer portion and a back layer portion, or a surface layer portion and a middle layer Three layers of a part and a back layer part are preferable. Here, either the surface layer portion, the back layer portion, or both layers have a structure in which napped fibers are arranged, and are used as a wiping layer.

  At least a single layer of the multilayer structure is composed of an ultrafine synthetic filament fiber (A) and a synthetic filament fiber (B) other than the ultrafine synthetic filament fiber.

  That is, first, the ultrafine synthetic filament fiber (A) contained in the wiping cloth of the present invention is a synthetic fiber having a single fiber fineness of 0.001 dtex or more and less than 1.0 dtex in thickness, and the ultrafine synthetic filament fiber (A ) Is preferably a filament of 0.005 to 0.5 dtex or less, more preferably 0.01 to 0.1 dtex or less. If it is less than 0.001 dtex, it will be too thin, so it will not be able to withstand the wiping pressure. It becomes difficult to capture dust and dust.

  The single fiber fineness of the synthetic filament fiber (B) other than the ultrafine synthetic filament fiber (A) is 1.0 dtex or more and 10 dtex or less, preferably 1.3 dtex or more and 9 dtex or less, more preferably 1. 5 decitex or more and 8 decitex or less. If it is less than 1.0 decitex, the entire fabric will have no waist and become difficult to wipe off, which is not preferred in practice. If it exceeds 10 decitex, it becomes hard on the contrary, and this is also not preferable in practice.

  Further, the thickness of the single filament of the synthetic filament fiber connecting at least the multilayer structure is preferably 0.1 dtex or more and 10 dtex or less, more preferably 0.5 dtex or more and 9 dtex or less, more preferably 1.0 dtex. The above is 8 decitex or less. When it is less than 0.1 decitex, the entire fabric is not waistless and it becomes funahunya, which is not preferable for practical use. If it exceeds 10 decitex, it becomes hard on the contrary, and this is also not preferable in practice.

  As the synthetic fiber constituting the fabric, a synthetic fiber that can be made ultrafine and other synthetic fibers are used. Examples of fibers that can be made ultrafine include sea-island type synthetic fibers and peel-type synthetic fibers.

  In the case of a sea-island type synthetic fiber, the island component is, for example, a fiber that can be made very fine, such as a polyester fiber, a polyamide fiber, a polyacrylonitrile fiber, a polyurethane fiber, a polyvinyl alcohol fiber, or a polyvinyl chloride fiber. Any fiber can be used as long as it is made of polyester fiber such as polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate and copolymers thereof, nylon 4, nylon 6, nylon 66 and copolymers thereof. The polyamide-type fiber which becomes is preferable. Furthermore, a polyester fiber having a small dimensional change due to washing after being ultrafine is more preferable. Examples of the sea component include a polyester-based modified resin, a polylactic acid-based resin, a polyvinyl alcohol-based resin, and the like. Among these, a polyester-based modified resin that has good compatibility with the island component and facilitates yarn production is preferable. Ultrathinning can be easily obtained by dissolving sea components in, for example, an alkaline solution.

  In the case of peelable synthetic fibers, it can be obtained by combining 2 to 5 synthetic resin fibers. Examples of the single component include polyester fibers, polyamide fibers, polyacrylonitrile fibers, and polyurethane fibers. Fiber, polyvinyl alcohol fiber, polyvinyl chloride fiber, and the like. Among them, polyester fiber made of polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate and copolymers thereof, nylon 4, nylon, etc. 6, polyamide 66 made of nylon 66 and copolymers thereof, and combinations thereof are preferable.

  In the case of the peelable type, for example, it can be peeled off and made ultrafine by treating in an alkaline solution.

  The other synthetic fibers play an important role in adjusting the texture of the entire fabric, and any fibers can be used as long as the texture can be controlled. For example, polyester fibers, polyamide fibers, polyacrylonitrile fibers Examples thereof include fibers, polyurethane fibers, polyvinyl alcohol fibers, polyvinyl chloride fibers, and the like, among which polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, and copolymers thereof have good compatibility with ultrafine fibers. Polyamide fibers made of nylon 4, nylon 6, nylon 66 and copolymers thereof are preferred.

  Synthetic fibers that can be made ultrafine and other synthetic fibers can be used as raw yarns, but can be used as processed yarns such as false twists, indents, and scratches, respectively. It can also be used with air entanglement and real twist, and can be selected according to the purpose.

  In the wiping cloth of the present invention, the fibers located in the middle layer portion have a corrugated cardboard structure, so that many voids are formed in the middle layer portion. It is preferable because it can be captured. This is a so-called sponge structure. The sponge structure may be either a woven fabric or a knitted fabric if it has a multilayer structure having a void in the middle layer. For example, if it is a woven fabric, it is a double woven or double woven fabric. Although vertical knitting, such as a double tricot and a double jersey, is mentioned, the double circular knitting which has a soft texture is preferable.

  It is important that one or both of the surface layer and the back layer of the fabric of the present invention have napping.

  The composition of the napping is 50 to 80% by weight of ultrafine synthetic filament fiber having a nap of 0.001 dtex or more and less than 1.0 dtex, and 50 to 20% by weight of synthetic filament fiber having a thickness of 1.0 dtex or more and 10 dtex or less. In addition, the length of the raised hair is preferably 0.1 mm to 10 mm. Napped filaments can capture very fine dust and dirt when wiping off dirt on a non-wiping surface, but cannot capture large dirt such as sand or dirt. Large soils are useful for scraping and wiping with thick fibers other than ultrafine filament fibers. When it is out of the above range, the sufficient wiping effect cannot be obtained. The length of napping is the same.

  The method for obtaining napped hair can be freely selected according to the purpose. For example, publicly known needle cloth raising, buffing, shearing between multiple layers, and flocking can be mentioned, and simple methods such as needle cloth raising and buffing can be preferably used.

  The thickness of the wiping cloth of the present invention is preferably 0.5 to 1.5 mm as measured using a medium thickness gauge (model: UF-60A) manufactured by Daiei Seiki Seisakusho. More preferably, it is 0.7-1.3 mm, More preferably, it is 0.9-1.1 mm. When the thickness is less than 0.5 mm, the water retention rate is insufficient, and when the thickness is more than 1.5 mm, it becomes too thick, so that it is practically difficult to handle.

  The wiping cloth of the present invention preferably contains a pyridine antibacterial agent. Examples of pyridine antibacterial agents include 2-chloro-6-trichloromethylpyridine, 2-chloro-4-trichloromethyl-6-methoxypyridine, 2-chloro-4-trichloromethyl-6- (2-furylmethoxy) pyridine, At least one selected from di (4-chlorophenyl) pyridine, 2-pyridylthiol-1-oxide zinc, and di (2-pyridylthiol-1-oxide) is preferably used.

  The wiping cloth of the present invention preferably has a water retention rate of 200 to 400% by weight measured by the measurement method described later. More preferably, it is 225-375 weight%, More preferably, it is 250-350 weight%. If it is less than 200% by weight, the moisture coming out of the fabric will be lost in a short time, resulting in wiping off the dirt. If it exceeds 400% by weight, the dirt will be scattered around the non-wiping surface, which is not preferable.

  Next, an example of the manufacturing method of the wiping cloth of this invention is shown below.

  A sea-island-type split composite fiber using polyester-based components and synthetic fibers with a thickness of 1.0 to 5 dtex are used, and the front and back are rich with sea-island composite fibers. By creating a layered fabric and treating it with, for example, hot water or an alkaline solution, the fine synthetic filament fiber (A) of 0.001 dtex or more and less than 1.0 dtex and 1.0 dtex or more and 10 dtex or less The synthetic filament fiber (B) having a thickness of Thereafter, a pyridine antibacterial agent is put into the dyeing solution, and at the same time as the dyeing or after dyeing, it is put into a solution containing the pyridine antibacterial agent to perform antibacterial processing. Next, at least one side of the obtained fabric is buffed to lay napping on the surface.

  The wiping cloth of the present invention has a multilayer structure in order to have water absorption and water retention, and is composed of ultrafine synthetic filament fibers (A) and other synthetic filament fibers (B) for scraping or wiping off dirt. By adopting a structure in which nap is arranged on at least one side of the fabric, an industrial wiping fabric or a general household and hospital wiping fabric capable of neatly wiping off dust, dust and artificial dirt can be obtained. In addition, it is suitable for use as a sanitary wiping cloth as well as clean the non-wiping surface in both wet and dry applications. In particular, it is effective for final wiping of automobiles, for example, wax finishing.

EXAMPLES Hereinafter, the present invention will be described more specifically based on examples, but the present invention is not limited to these examples. In the examples, “%” means “% by weight” unless otherwise specified. Moreover, the quality evaluation in an Example followed the following method.
(1) Wipeability evaluation method Silicone oil SH200 (manufactured by Toray Dow Corning Silicone Co., Ltd.) is dropped onto a 5 ml glass plate with an injection needle and applied to one end face of a cylindrical load having a diameter of 45 mm and a weight of 9.807 N. Then, a sample (wiping cloth) fixed through a woven fabric corresponding to a thickness of 1 mm is placed on a glass plate and moved at a speed of 1 × 10 ⁻² m / min to wipe off the silicone. Next, the toner for the dry copying machine is sprinkled on the glass plate, and the toner is blown off with compressed air (0.09807 MPa). A cellophane tape (registered trademark, manufactured by Sekisui Chemical Co., Ltd.) is attached on the glass plate, the residual toner on the glass plate is peeled off, and the degree of toner adhering to the cellotape is determined.

  The sample was used as it was for the dry method, and the wet method was completely immersed in water for 1 minute, then taken out and squeezed under a mangle 0.09807 MPa under pressure.

○: No toner attached Δ: Toner a little attached ×: Very large amount of toner left
(2) Antibacterial evaluation method A unified test method was adopted as a test method, and MASA clinical isolates were used as test cells. In the test method, a bouillon suspension of the above test bacteria is poured into a sterilized sample cloth, and the number of viable bacteria after culturing at 37 ° C. for 18 hours in a sealed container is obtained to obtain the number of bacteria relative to the number of inoculated bacteria. According to the standards.
Under the condition of log (B / A)> 1.5, log (B / C) was defined as the difference in the number of bacterial growth, and 1.5 or more was determined as the acceptable level. However,
A: Number of bacteria dispersed and recovered immediately after unprocessed product was cultured B: Number of bacteria dispersed and recovered after 18 hours of incubation of aseptic processed product C: Number of bacteria dispersed and recovered after 18 hours of incubation of processed product.
(3) Water retention rate (%)
Weigh the sample (10 cm x 20 cm) and soak in water for 2 minutes. Next, the wet sample was pulled up, dipped for 1 minute, weighed, and the weight difference before and after immersion was determined by the following equation.

Water retention rate (%) = 100 × (A−B) / B
A: Weight of sample taken after immersion B: Weight of sample before immersion.

Judgment is
○: Within the range of 200% or more and 400% or less ×: The above range was excluded.
(4) Thickness measurement method The thickness was measured using a medium thickness thickness meter (model: UF-60A) manufactured by Daiei Seiki Seisakusho.
Judgment is
◯: In the range of 0.5 mm or more and 1.5 mm or less.

Example 1
It consists of two layers, front and back, as sea-island type composite fibers on the front and back sides, is a sea-island type polyester composite fiber with a total fineness of 135 dtex and 18 filaments (70 islands / filament), the island component is polyethylene terephthalate, and the sea component is polyester acid 40.6% by weight of fiber (sea / island weight ratio: 20/80) composed of a copolymer of terephthalic acid and 5-sodium isophthalic acid as a component (sea / island weight ratio: 20/80), 56 dtex, 12 Polyethylene terephthalate fiber 23.8% by weight with a filament (single fiber fineness 4.7 decitex), 56 decitex as a connecting thread on the front and back surfaces, polyethylene terephthalate fiber 35 with 12 filaments (single fiber fineness 4.7 decitex) Set to 6% And, it was knitting in the usual double circular knitting machine. The obtained raw machine was subjected to maleic acid treatment at 130 ° C. for 30 minutes to embrittle the sea component, and then treated with sodium hydroxide at 80 ° C. for 45 minutes to completely remove the sea component. The obtained ultrafine synthetic filament fiber had a single fiber fineness of 0.07 dtex and a knitted fabric thickness of 2.5 mm. This knitted fabric was dyed light blue with 1 g / l of 2-pyridylthiol-1-oxide zinc and a disperse dye. Both sides of the obtained fabric were buffed using # 400 sandpaper to obtain a wiping cloth. The thickness of the obtained fabric is 0.98 mm, napping is a mixture of ultrafine synthetic filament fibers and other synthetic filament fibers, water retention is 304%, and antibacterial properties are 4.4. As a result, no toner remained on the dry and wet fabrics, and it was wiped off well, which was an excellent wiping cloth. The results are shown in Table 1.

(Example 2)
56 decitex, 18 filament exfoliation split type multifilament yarn as an ultrafine synthetic filament fiber (single yarn fiber cross-sectional shape is an 8-leaf shape with a polyamide component at the center, and exfoliation split with a polyester component surrounding it 90, which is a fiber of a mold, which is processed from a temporary fiber having a single fiber fineness of 0.89 dtex of the polyamide fiber after peeling and a single yarn fineness of 0.22 dtex of the polyester fiber) A wiping cloth was prepared in the same manner as in Example 1 except that the separation was performed by sodium hydroxide treatment at a temperature of 45 ° C. for 45 minutes.
The resulting fabric has a thickness of 1.02 mm, napped fibers are a mixture of ultrafine synthetic filament fibers and other synthetic filament fibers, water retention is 298%, antibacterial property is 4.5, and wiping As a result, no toner remained on the dry and wet fabrics, and it was wiped off well, which was an excellent wiping cloth. The results are shown in Table 1.

(Comparative Example 1)
A plain weave fabric was woven with 110 dtex, 24 filament polyethylene terephthalate fiber 100%, and dyed and evaluated without using an antibacterial agent. The thickness of the resulting fabric is 0.3 mm, there is no nap, the water retention rate is 75%, no antibacterial property is seen, the wiping property is dry, and a very large amount of toner remains on the wet fabric. It was unsuitable. The results are shown in Table 1.

(Comparative Example 2)
Evaluation was performed using a commercially available cotton wiping cloth. The thickness of the fabric is 0.8mm, there is no nap, the water retention rate is 140%, no antibacterial property is seen, the wiping property is dry, and the wet fabric has a very large amount of toner, making it unsuitable as a wiping cloth Met. The results are shown in Table 1.

(Comparative Example 3)
A circular knitted structure was knitted with a normal weft knitting machine with 100% sea-island type composite fiber as in Example 1, dyed after sea removal, and dyed and evaluated without using an antibacterial agent. The thickness of the obtained fabric was 0.2 mm, there was no napping, the water retention rate was 103%, no antibacterial property was observed, the wiping property was dry, and a slight amount of toner remained on the wet fabric. It was enough. The results are shown in Table 1.

Claims (7)

50 to 80% by weight of ultrafine synthetic filament fiber (A) having a single fiber fineness of 0.001 dtex or more and less than 1.0 dtex, and a single filament fineness of 1.0 to 10 dtex synthetic filament fiber ( B) Ri is Do from the fabric formed in a multilayer structure by a 50 to 20 wt%, the multilayer structure is sintered wearing synthetic filament fibers connecting the multi-layer structure, the thickness of the synthetic filament fibers of 0.1 dtex or more A wiping cloth having a thickness of 10 dtex or less and having a nap on at least one side, wherein the water retention of the fabric is 200 to 400% by weight . The wiping cloth according to claim 1, wherein the ultrafine synthetic filament fiber (A) and the synthetic filament fiber (B) are made of a polyester fiber and / or a polyamide fiber. 50 to 80% by weight of ultrafine synthetic filament fiber (A) having a single fiber fineness of 0.001 dtex or more and less than 1.0 dtex, and a single filament fineness of 1.0 to 10 dtex synthetic filament fiber The wiping cloth according to claim 1 or 2, wherein (B) is composed of 50 to 20% by weight. The wiping cloth according to any one of claims 1 to 3 , wherein the length of the napping is 0.1 mm to 10 mm. The wiping cloth according to any one of claims 1 to 4 , wherein the thickness is 0.5 to 1.5 mm. The wiping cloth according to any one of claims 1 to 5 , further comprising a pyridine antibacterial agent. Vertical knitting machine having a plurality of ridges using a composite synthetic fiber having a sea-island structure or a peeled structure and a synthetic fiber thicker than the single fiber fineness of the composite synthetic fiber after the removal of the sea component of the composite synthetic fiber or after the peeling process 2. A wiping cloth according to claim 1 , wherein a fabric formed by weaving on a loom is treated in hot water or an alkaline solution, and after sea component removal treatment or peeling treatment, at least one side is raised. Manufacturing method.