Spunlace nonwoven fabric

Abstract

To provide a spun lace nonwoven fabric that has both liquid adsorbing property and strength, can be flexibly deformed according to a shape of an object to be wiped, and has adequate shape retention so as to be hard to curl when getting wet.SOLUTION: A spun lace nonwoven fabric is formed by water-jet entangling rayon fiber and polyester fiber. Content of the rayon fiber is 40 wt.% or more and 80 wt.% or less of total amount of the spun lace nonwoven fabric. Content of the polyester fiber is 20 wt.% or more and 60 wt.% or less of the total amount of the spun lace nonwoven fabric. Basis weight is 30 g / m2 or more and 100 g / m2 or less. An amount of water absorption (T. W. A) is 200 g / m2 or more. Tensile strength in a lengthwise direction during getting wet with water (WMDT) is 9.8 N / 25 mm or more. Length measured according to angle 45° cantilever method based on JIS L 1096 is 25 mm or more and 55 mm or less.SELECTED DRAWING: None

Description

[Technical Field]

[0001] This invention relates to a spunlace nonwoven fabric formed by entangling rayon fibers and synthetic fibers with water. [Background technology]

[0002] Spunlace nonwoven fabrics, formed by entangling rayon and synthetic fibers with water, possess both the liquid-absorbing properties of rayon fibers and the strength of synthetic fibers. Therefore, they are widely used in various applications, such as industrial wipers like rags, and personal wipers like hand towels and towels. Because spunlace nonwoven fabrics are useful as cleaning wipers in various industrial fields, numerous proposals have been made regarding them.

[0003] Patent Document 1 describes a wiper composed of a flat nonwoven fabric in which fibers are entangled and integrated by a high-pressure jet of water, wherein the entanglement treatment involves placing a buffer plate with an open area of ​​10-47% on the nonwoven web before entanglement, and entangling the fibers from above the buffer plate by a high-pressure jet of water, wherein the nonwoven fabric contains 85 wt% or more of cupraammonium rayon fibers, which are continuous rayon long fibers, the amount of detached minute foreign matter of 100 μm or more in length is 20,000 or less per square meter, the amount of acetone eluted is 340 mg / kg or less, and the water absorption is 9 ml / g or more (Claim 1). The nonwoven wiper described in Patent Document 1 contains rayon fibers that have excellent liquid absorption properties for both water-based and oil-based liquids. Furthermore, Patent Document 1 describes the nonwoven wiper as useful as an industrial wiper because it has a low amount of shedding of minute foreign matter and acetone elution, and a high water absorption capacity. It is said to have satisfactory performance not only for use in clean rooms but also for cleaning painted surfaces before painting work. Because it can use acetone, which has high dissolving power, it can thoroughly clean stubborn resin stains and oil film stains inside chambers that cannot be wiped away with water, and can also sufficiently wipe away a wide variety of aqueous chemicals, including sulfuric acid and nitric acid (paragraph 0062). [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Patent No. 4298653 [Overview of the project] [Problems that the invention aims to solve]

[0005] Nonwoven wipers used for cleaning endoscopes and similar equipment require high moisture-absorbing performance and sufficient strength to withstand wet conditions without tearing. Furthermore, given their use with precision instruments, low dust generation is desirable. Additionally, since the objects being wiped are not flat but three-dimensional structures, the wipers should be flexible and conform to the shape of the objects being wiped.

[0006] On the other hand, if a non-woven wiper tends to curl up due to moisture during wiping, the effective wiping area decreases, and it becomes difficult to hold, thus worsening the wiping performance. In particular, when wiping after soaking the non-woven wiper with cleaning water or chemicals and lightly squeezing out excess water, the work is sometimes done with one hand, and if the sheet does not spread out easily, the work performance deteriorates. For these reasons, a non-woven wiper that does not curl up easily when wet is desirable.

[0007] The object of the present invention is to provide a spunlace nonwoven fabric that combines liquid absorption and strength, flexibly deforms to conform to the shape of the object to be wiped, has moderate shape retention that prevents it from curling when wet, and is suitable for use as a nonwoven wiper. [Means for solving the problem]

[0008] The present inventors, through diligent research to solve the above problems, have found that by using a nonwoven fabric containing rayon fibers and polyester fibers, in which highly absorbent rayon fibers and polyester fibers that do not lose strength easily when wet are interwoven, and by adjusting the content ratio of rayon fibers and polyester fibers to a predetermined range, and by adjusting the basis weight, water absorption capacity (TWA), longitudinal tensile strength in wet conditions (WMDT; Wet Machine Direction Tensile strength), and length measured according to the 45° cantilever method based on JIS L 1096 to a predetermined range, a spunlace nonwoven fabric that can be suitably used in various industrial fields, particularly as a nonwoven wiper for cleaning medical devices such as endoscopes, can be obtained, thus completing the present invention. That is, the present invention relates to the following spunlace nonwoven fabric.

[0009] (1) A spunlace nonwoven fabric made by entangling rayon fibers and polyester fibers with water flow, The rayon fiber content is 40% by weight or more and 80% by weight or less of the total amount of the spunlace nonwoven fabric, and the polyester fiber content is 20% by weight or more and 60% by weight or less of the total amount of the spunlace nonwoven fabric. Basis weight 30g / m² 2 More than 100g / m 2 Below, the water absorption capacity (TWA) is 200g / m². 2 The above describes a spunlace nonwoven fabric having a longitudinal tensile strength (WMDT) of 9.8 N / 25 mm or more when wet, and a length measured according to the 45° cantilever method based on JIS L 1096, between 25 mm and 55 mm. (2) The spunlace nonwoven fabric described in (1) above, wherein the rayon fibers include viscose rayon and have a lateral tensile strength (WCDT) of 6.8 N / 25 mm or more when wet. (3) The spunlace nonwoven fabric according to (1) or (2) above, having a water absorption rate of 7.4 seconds / 0.1 mL or less. (4) A spunlace nonwoven fabric according to any of (1) to (3) above, having a thickness of 0.18 mm / ply or more and 0.7 mm / ply. [Effects of the Invention]

[0010] The present invention provides a spunlace nonwoven fabric that combines liquid absorption and strength, flexibly deforms to conform to the object being wiped, has moderate shape retention that prevents it from curling when wet, and is suitable for use as a nonwoven wiper. [Brief explanation of the drawing]

[0011] [Figure 1] This is a schematic diagram showing one embodiment of the method for manufacturing spunlace nonwoven fabric according to this embodiment. [Figure 2] Figure 2 is a diagram showing the evaluation criteria for the resistance of the spunlace nonwoven fabric to curling when wet according to this embodiment. Figure 2(a) shows the state of evaluation 5, and Figure 2(b) shows the state of evaluation 1. [Modes for carrying out the invention]

[0012] The spunlace nonwoven fabric of this embodiment contains rayon fibers and polyester fibers, with the rayon fiber content being 40% to 80% by weight of the total spunlace nonwoven fabric and the polyester fiber content being 20% ​​to 60% by weight of the total spunlace nonwoven fabric. Furthermore, the physical properties of the spunlace nonwoven fabric of this embodiment are a basis weight of 30 g / m². 2 More than 100g / m 2 Below, the water absorption capacity (TWA) is 200g / m². 2 In summary, the wet machine direction tensile strength (WMDT) when wet is 9.8 N / 25 mm or higher, and the length measured according to the 45° cantilever method based on JIS L 1096 is between 25 mm and 55 mm.

[0013] According to the spunlace nonwoven fabric of the present embodiment, it has both liquid absorbency and strength, can be flexibly deformed according to the shape of the object to be wiped, has an appropriate shape retention property that is difficult to round when wet, is excellent in wiping performance, has low dust generation property, and can be suitably used as a nonwoven wiper. The spunlace nonwoven fabric of the present embodiment can be particularly suitably used, for example, as a nonwoven wiper for cleaning medical devices such as endoscopes.

[0014] <Raw material fibers of the spunlace nonwoven fabric> The spunlace nonwoven fabric of the present embodiment contains rayon fibers and polyester fibers as raw material fibers, and may further contain heat-fusible fibers.

[0015] <Rayon fibers> Rayon fibers are regenerated fibers obtained by extracting cellulose contained in plants, dissolving it once with chemical agents, and then regenerating it into fibrous form. They are rich in liquid absorbency and, for example, improve the water absorbency, oil absorbency, etc. of the spunlace nonwoven fabric. Rayon fibers are not particularly limited, and examples include viscose rayon, modal, lyocell, etc. Among these, viscose rayon is preferable. Rayon fibers can be used alone or in combination of two or more. The content (content ratio) of rayon fibers is in the range of 40% by weight or more and 80% by weight or less of the total amount of the spunlace nonwoven fabric, or in the range of 45% by weight or more and 70% by weight or less. By including rayon fibers within the aforementioned range, a spunlace nonwoven fabric with improved balance in water absorbency, difficulty of breakage when wet, dust generation property, difficulty of rounding when wet, softness, etc. can be obtained. If the content of rayon fibers is less than 40% by weight, the water absorbency of the spunlace nonwoven fabric decreases, and the softness of the sheet tends to slightly decrease. If it exceeds 80% by weight, it tends to be easy to round when wet, and the dust generation property and difficulty of breakage when wet tend to slightly decrease.

[0016] <Polyester fibers> Polyester fibers do not easily lose strength when wet, and can prevent spunlace nonwoven fabrics from tearing during wiping and from curling when wet. To fully utilize the functions of polyester fibers, it is preferable to entangle them with water flow, for example, with rayon fibers. In a preferred embodiment, polyester fibers are blended with rayon fibers and defibrated, and the web formed by carding is entangled with water flow. The polyester fiber content (percentage) is in the range of 20% to 60% by weight or 30% to 55% by weight of the total amount of spunlace nonwoven fabric. By including polyester fibers within the above range, a spunlace nonwoven fabric can be obtained in which water absorption, tear resistance when wet, low dust generation, resistance to curling when wet, and softness are improved in a well-balanced manner. When the polyester fiber content is less than 20% by weight, the material tends to curl easily when wet, and its resistance to tearing when wet tends to decrease slightly. When the polyester fiber content exceeds 60% by weight, the water absorption of the spunlace nonwoven fabric decreases, and the softness of the sheet tends to decrease slightly.

[0017] <Heat-fusible fibers> The spunlace nonwoven fabric of this embodiment may contain heat-fusible fibers in addition to rayon fibers and polyester fibers. By including heat-fusible fibers, for example, the tear resistance of the spunlace nonwoven fabric when wet can be further improved. The content (percentage) of heat-fusible fibers is not particularly limited, but for example, it is in the range of 25% by weight or less of the total amount of spunlace nonwoven fabric, or 3% by weight or more and 22% by weight or less. By including heat-fusible fibers within the above range, the effect of improving tear resistance when wet can be fully realized.

[0018] Heat-fusible fibers are thermoplastic resin fibers having a melting point in the range of 100°C to 200°C. Such thermoplastic resin fibers can be used without particular limitation as long as their melting point falls within the aforementioned range. Examples include polyolefin fibers such as polyethylene (PE) and polypropylene (PP), polyester fibers such as polyester, polyamide fibers such as nylon 6 and nylon 66, and polyacrylic fibers such as polyacrylic acid and polyalkyl methacrylate. Furthermore, composite fibers consisting of two or more components, such as a low-melting-point component and a high-melting-point component, can be used as heat-fusible fibers. Examples of such composite fibers include core-sheath type composite fibers. Preferably, the core is made of high-melting-point PET or PP, and the sheath is made of low-melting-point PET, PP, or PE. Examples of core-sheath type composite fibers include those with a homogeneous core-sheath type and those with an eccentric core-sheath type. Specific examples of these composite fibers are described in Japanese Patent Publication No. 9-296325 and Japanese Patent No. 2759331, among others. Furthermore, commercially available heat-fusible fibers can also be used, including the ES Chop series (manufactured by Chisso Corporation) and the NBF series (manufactured by Daiwa Spinning Co., Ltd.). In particular, the E-type of NBF is suitable because it uses EVA (ethylene-vinyl acetate copolymer) with a low melting point (approximately 100°C) as the sheath component, allowing for simultaneous drying and fusion during the drying process in nonwoven fabric manufacturing, thus simplifying the operational process. Among these heat-fusible fibers, core-sheath type composite fibers are preferred, and PE / PET type composite fibers are more preferred.

[0019] <Synthetic Fibers> The spunlace nonwoven fabric of this embodiment may contain general synthetic fibers in addition to the heat-fused fibers, as long as the above-described advantages and effects are not impaired. Synthetic fibers are thermoplastic resin fibers having a melting point of 200°C or higher. Examples of such thermoplastic resin fibers include polyolefin fibers such as polyethylene (PE) and polypropylene (PP), polyester fibers such as polyethylene terephthalate (PET), polyamide fibers such as nylon 6 and nylon 66, polyacrylic fibers such as polyacrylic acid and polymethacrylic acid alkyl ester, and vinyl chloride fibers such as polyvinyl chloride and polyvinylidene chloride. Among these, polyester fibers, polyolefin fibers, etc. are preferable, and PP, PE, PET, etc. are more preferable. The synthetic fibers can be used alone or in combination of two or more kinds.

[0020] Next, the physical properties of the spunlace nonwoven fabric of this embodiment will be described.

[0021] <Grammage> The grammage of the spunlace nonwoven fabric according to this embodiment is 30 g / m 2 or more and 100 g / m 2 or less, or 40 g / m 2 or more and 70 g / m 2 or less. When the basis weight is within the above range, the strength is high and it is difficult to break, and it is soft without a stiff feeling, so the adhesion during wiping is good and the wiping property is good. When the grammage is within the above range, the softness and strength of the spunlace nonwoven fabric can be maintained, and the ease of wiping and the difficulty of breaking during wiping can be improved. When the grammage is less than 30 g / m 2 , it tends to break easily when wet and the wiping property tends to decrease. When it exceeds 100 g / m 2 , the spunlace nonwoven fabric becomes hard and the wiping property tends to decrease. The grammage of the spunlace nonwoven fabric is measured, for example, in accordance with JIS P 8124.

[0022] <Water Absorption (T.W.A)> The water absorption (T.W.A) of the spunlace nonwoven fabric according to this embodiment is 200 g / m 2Within the above range, 200g / m 2 More than 460g / m 2 Within the following range, or 300g / m² 2 More than 460g / m 2 The range is as follows. By setting the water absorption amount within the aforementioned range, a spunlace nonwoven fabric with good water absorption performance can be obtained. Water absorption amount (TWA) of 200 g / m 2 If the value is below a certain level, water absorption and, consequently, wiping performance tend to decrease.

[0023] <Longitudinal tensile strength (WMDT) when wet> The longitudinal tensile strength (WMDT) of the spunlace nonwoven fabric in this embodiment when wet is in the range of 9.8 N / 25 mm or more, or in the range of 9.8 N / 25 mm to 65.0 N / 25 mm. By setting the longitudinal tensile strength (WMDT) in wet to the above range, a spunlace nonwoven fabric that is less prone to tearing when wet and generates less dust can be obtained. If the longitudinal tensile strength (WMDT) in wet is less than 9.8 N / 25 mm, the spunlace nonwoven fabric tends to tear easily when wet, and the dust generation is slightly reduced. The longitudinal tensile strength (WMDT) in wet is measured in accordance with JIS P 8113, with a test specimen width of 25 mm.

[0024] <Cantilever length> The spunlace nonwoven fabric according to this embodiment has a cantilever length (hereinafter also simply referred to as "cantilever length") measured in accordance with the 45° angle cantilever method based on JIS L 1096, which is in the range of 25 mm to 55 mm, or 30 mm to 50 mm. Having a cantilever length within the aforementioned range results in a spunlace nonwoven fabric that is less prone to curling when wet and has good softness. When the cantilever length is less than 25 mm, the fabric tends to curl more easily when wet. When the cantilever length exceeds 55 mm, the spunlace nonwoven fabric tends to become harder and its wiping properties tend to decrease.

[0025] <Transverse tensile strength (WCDT) when wet> When the spunlace nonwoven fabric according to this embodiment contains viscose rayon as the rayon fiber, the lateral tensile strength (WCDT) of the spunlace nonwoven fabric when wet is preferably in the range of 6.8 N / 25 mm or more, 6.8 N / 25 mm to 54 N / 25 mm, or 16 N / 25 mm to 40 N / 25 mm. By adjusting the lateral tensile strength (WCDT) when wet to the above range, it is possible to particularly improve the tear resistance and dust generation properties of the spunlace nonwoven fabric when wet.

[0026] <Water absorption rate> The spunlace nonwoven fabric of this embodiment preferably has a water absorption rate in the range of 7.4 seconds / 0.1 mL or less, 5 seconds / 0.1 mL or less, or 3 seconds / 0.1 mL or less. Having a water absorption rate within the aforementioned range improves the wiping ability of water and oil, particularly in industrial fields such as medical equipment, resulting in a highly effective nonwoven wiper. If the water absorption rate exceeds 7.4 seconds / 0.1 mL, the wiping ability of water, oil, etc., tends to decrease. The water absorption rate is measured based on the water absorption rate test specified in JIS L 1907.

[0027] <thickness> The thickness of the spunlace nonwoven fabric according to this embodiment is in the range of 0.18 mm / 1ply to 0.7 mm / ply, or 0.2 mm / 1ply to 0.6 mm / 1ply. By adjusting the thickness to the above range, for example, it is possible to improve wipeability while achieving both high strength and sheet softness. When the thickness is less than 0.2 mm / 1ply, the sheet tends to curl less when wet. When the thickness is greater than 0.7 mm / 1ply, the sheet tends to become less soft. The thickness is measured at 37.85 gf / cm2 using a Peacock paper thickness gauge (product name: PEACOCK, constant pressure thickness measuring instrument, manufactured by Ozaki Seisakusho Co., Ltd.).

[0028] <Method for manufacturing spunlace nonwoven fabric> The spunlace nonwoven fabric according to this embodiment can be manufactured according to a conventionally known method for manufacturing spunlace nonwoven fabrics. Figure 1 shows one embodiment of a method for manufacturing spunlace nonwoven fabric, which includes a web manufacturing step, a water flow entanglement step, and a drying step.

[0029] In the web production process, predetermined amounts of rayon fibers and polyester fibers, as well as heat-fusible fibers, synthetic fibers, etc., as needed, are passed through the carding machine 10 to obtain a fiber web. The rigidity of the spunlace nonwoven fabric can be adjusted by selecting the type and diameter of the fibers used. The obtained fiber web is then transported to the water entanglement process.

[0030] In the water entanglement process, a high-pressure water stream is injected from water jet nozzles 11 positioned almost perpendicular to the fiber web, causing the fibers within the web to become entangled. In this embodiment, there are four water jet nozzles 11, but the invention is not limited to this embodiment and any number of nozzles can be used. Here, the hole diameter φ of the water jet nozzles 11 is, for example, in the range of 0.06 mm to 0.15 mm, or 0.10 mm to 0.12 mm. The distance between two adjacent water jet nozzles 11 is, for example, in the range of 0.4 mm to 1.0 mm. The water pressure for the water entanglement process is set according to the basis weight of the fiber web, for example, in the range of 1 MPa to 30 MPa. After water entanglement is performed, a fiber web in which each fiber is entangled is obtained, and this fiber web is transported to the drying process.

[0031] In the drying process, the aforementioned intertwined fiber web is dried in the dryer 12 to obtain the spunlace nonwoven fabric of this embodiment. By using a predetermined amount of rayon fibers and polyester fibers, and by setting the hole diameter φ of the water jet nozzle 11, the spacing between the water jet nozzles 11, and the water pressure of the water flow entanglement treatment to the aforementioned ranges, a spunlace nonwoven fabric having the predetermined characteristics of this embodiment can be obtained. Here, the drying conditions are not particularly limited, but for example, drying can be carried out at a temperature of 80°C to 200°C for a period of 1 minute to 30 minutes.

[0032] Although the present invention has been described above using embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope of the invention described in the above embodiments, and it will be clear to those skilled in the art that various modifications or improvements can be made to the above embodiments. Furthermore, it is clear from the claims that embodiments with such modifications or improvements may also be included in the technical scope of the present invention. [Examples]

[0033] The embodiment will be described in more detail below with reference to examples and comparative examples.

[0034] (Examples 1-7 and Comparative Examples 1-12) Rayon fibers, polyester fibers (referred to as "PL" in Tables 1 and 2 below), polyethylene fibers (referred to as "PE fibers" in Tables 1 and 2 below), and heat-fusible fibers (low-melting-point PET or PE / PP core-sheath fibers) were used in the proportions (weight %) shown in Table 1 or Table 2 to produce spunlace nonwoven fabrics for Examples 1-7 and Comparative Examples 1-12. The obtained spunlace nonwoven fabrics were evaluated as follows. The results are shown in Tables 1 and 2.

[0035] [Measurement method] The following tests were performed on each spunlace nonwoven fabric obtained in Examples 1-7 and Comparative Examples 1-12. The results are shown in Tables 1 and 2. (Basis weight) Measured in accordance with JIS P 8124. (TWA) A spunlace nonwoven fabric sheet is cut into a 76mm x 76mm square to prepare a sample, and its dry weight is measured. Next, the sample is immersed in distilled water for 2 minutes, and then suspended in a steam-saturated container with one corner of the sample as the upper apex, supported by this apex and the two adjacent corners, in an extended state. After 30 minutes, the weight is measured after draining the water. From each of the obtained measurements, the weight of 1 m of sample is measured. 2 Water retention capacity per unit area (g / m³) 2 ) was sought. (Cantilever length) Measured according to the 45° angle cantilever method based on JIS L 1096. (Water absorption rate) In accordance with the dropping method specified in JIS L 1907, the time (in seconds) from when a 0.1 ml drop of water reached the surface of the test piece (spunlace nonwoven fabric) until the specular reflection of the test piece disappeared was measured and defined as the water absorption rate. (WMDT, WCDT) Spunlace nonwoven fabric was cut into strips 25 mm wide, and its wet strength was measured in the longitudinal direction (MD: feed direction during manufacturing) and transverse direction (CD: width direction perpendicular to MD) using a tensile testing machine. (Thickness) The thickness was measured using a Peacock paper thickness gauge (product name: PEACOCK, constant pressure thickness gauge, manufactured by Ozaki Seisakusho Co., Ltd.). With a measuring load of 37.85 Pa and a probe diameter of 30 mm, the sample (nonwoven wiper, 1 ply) was placed between the probe and the measuring stand, and the gauge was read when the probe was lowered at a speed of 1 mm or less per second. The measurement was repeated 10 times and the average value was calculated.

[0036] [Evaluation Method] The following evaluations were performed on each spunlace nonwoven fabric obtained in Examples 1-7 and Comparative Examples 1-12. All evaluations were on a 5-point scale, with "1" representing the best condition (excellent) and "5" representing the worst condition (unacceptable). The results are shown in Tables 1 and 2. (Water absorption) The water absorption of spunlace nonwoven fabric when wiping away moisture was evaluated. A rating of "3" indicated no problems with water absorption in practical use. "2" indicated slightly better than "3", and "1" indicated better. "4" indicated slightly worse than "3", and "5" indicated worse. (Tear resistance when wet) The strength of spunlace nonwoven fabrics in a wet state was evaluated. The evaluation was as follows: "3" for strength (tearability) in wet conditions that poses no problem in use, "2" for slightly better than that, "1" for better, "4" for slightly worse than "3", and "5" for worse. (Dust-generating) The amount of dust generated when spunlace nonwoven fabric was shaken by hand was evaluated. The evaluation was as follows: "3" for dust generation that is not a problem in use, "2" for slightly better than average, "1" for excellent, "4" for slightly worse than average, and "5" for worse. (Resistance to curling when wet) We evaluated the resistance to curling (stiffness) of spunlace nonwoven fabric when wet. The evaluation was based on the following criteria: "3" for no problems in usability, "2" for slightly better than 3, "1" for better, "4" for slightly worse than 3, and "5" for worse. Figure 2(a) shows the state of evaluation 5, and Figure 2(b) shows the state of evaluation 1. (Seat softness) We evaluated the tactile feel and stiffness of the spunlace nonwoven fabric when dry. The evaluation was based on the following criteria: "3" for a good fit to the hand and good flexibility in use, "2" for slightly better than that, "1" for excellent, "4" for slightly worse than "3", and "5" for worse.

[0037] [Table 1]

[0038] [Table 2]

[0039] Tables 1 and 2 show that the spunlace nonwoven fabrics according to the present embodiment in Examples 1 to 7 have a good balance of water absorption, resistance to tearing when wet, low dust generation, resistance to curling when wet, and sheet softness, making them suitable for use as nonwoven wipers for cleaning in various industrial applications, especially in the field of medical equipment. [Explanation of symbols]

[0040] 10 card machines 11 Water jet nozzle 12 Dryer

Claims

1. A spunlace nonwoven fabric made by entangling rayon fibers and polyester fibers with water flow, The rayon fiber content is 40% by weight or more and 80% by weight or less of the total amount of the spunlace nonwoven fabric, the polyester fiber content is 20% by weight or more and 60% by weight or less of the total amount of the spunlace nonwoven fabric, and furthermore, the rayon fiber content is equal to or greater than the polyester fiber content. Basis weight 30 g / m² ２ More than 100g / m ２ Below, the water absorption capacity (T.W.A) is 200 g / m ２ The above describes a spunlace nonwoven fabric having a longitudinal tensile strength (WMDT) of 9.8 N / 25 mm or more when wet, and a length measured in both the longitudinal and transverse directions according to the 45° angle cantilever method based on JIS L 1096, between 25 mm and 55 mm.

2. The spunlace nonwoven fabric according to claim 1, for use in wiping medical devices.

3. The spunlace nonwoven fabric according to claim 1 or 2, wherein the rayon fibers include viscose rayon and have a transverse tensile strength (WCDT) of 6.8 N / 25 mm or more when wet.

4. A spunlace nonwoven fabric according to claim 1 or claim 2, wherein the water absorption rate is 7.4 seconds / 0.1 mL or less.

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