JP2018202124A - Pulp-mixed nonwoven fabric wipe, and method of manufacturing the same - Google Patents

Abstract

To provide a pulp-mixed nonwoven fabric wipe excellent in liquid absorbing property and abrasion resistance.SOLUTION: In a pulp-mixed nonwoven fabric wipe in which pulp 3 and chemical fibers 2 are intertwined together, basis weight is in the range of 45 to 80 g/m; the basis weight of the chemical fibers 2 is in the range of 10 to 17 g/m; the blending ratio of the pulp 3 is 75 mass% or more; the aspect ratio of dry tensile strength is 3.0 or less: and a front-and-back-sides difference in measurement value in a Martindale method specified in JIS L 1096 E is 100 or less.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pulp-mixed nonwoven fabric wipe and a method for producing a pulp-mixed nonwoven fabric wipe.

Pulp-mixed nonwoven fabrics in which pulp and chemical fibers are hydroentangled are used in various applications, but are also used as nonwoven fabric wipes because of their excellent liquid absorbency such as water and oil.
Since this pulp-mixed nonwoven fabric wipe is used for various types of wiping, in addition to liquid absorption, wear resistance is also important.

  And the liquid absorbency in this kind of pulp mixed nonwoven fabric wipe, especially water absorption, mainly affects the pulp fiber mix | blended. However, if the blending ratio of the pulp fiber is simply increased in order to increase the water absorption, the pulp fiber tends to be detached from the surface, and the pulp is likely to peel off and fall off when performing a wiping operation that particularly rubs strongly. .

  In order to prevent the pulp from detaching from the surface, a technique of applying a binder to the surface or blending a binder fiber is known. However, such a binder application reduces the liquid absorbency and costs. There is a drawback of becoming high.

JP 2014-68855 A

  Then, the main subject of this invention is providing the pulp mixing nonwoven fabric wipe which water-entangled the pulp and the chemical fiber which is excellent in liquid absorption property and abrasion resistance.

Means for solving the problems of the present invention are as follows.
That is, the first means is
A pulp mixed nonwoven fabric in which pulp and chemical fiber are entangled,
The basis weight is 45-80 g / m ² ,
The basis weight of the chemical fiber is 10 to 17 g / m ² ;
The blending ratio of the pulp is 75% by mass or more,
The aspect ratio of dry tensile strength is 3.0 or less,
The difference between the measured values in the Martindale method specified in JIS L 1096 E method is 100 or less,
This is a pulp-mixed nonwoven fabric wipe.

  A 2nd means is a pulp mixed nonwoven fabric wipe which concerns on said 1st means whose pulp contains 95 mass% or more of NBKP, and the thickness of a chemical fiber is 18-22 micrometers.

And the third means is
A step of laminating dissolving pulp on a spun pond non-woven fabric on a synthetic non-woven fabric sheet having a basis weight of 10 to 17 g / m ² ;
A water entangling step of injecting a water flow from a nozzle having a nozzle diameter of 0.5 to 0.15 mmφ onto the surface of the dried pulp sheet;
It is a manufacturing method of the pulp mixing nonwoven fabric wipe characterized by having.

  A 4th means is a manufacturing method of the pulp mixing nonwoven fabric wipe which concerns on the said 3rd means whose pulp sheet contains NBKP 95 mass% or more, and the thickness of the chemical fiber which comprises a chemical fiber nonwoven fabric sheet is 18-22 micrometers. .

  ADVANTAGE OF THE INVENTION According to this invention, the pulp mixed nonwoven fabric wipe which water-entangled the pulp and the chemical fiber which is excellent in a liquid absorption property and abrasion resistance is provided.

It is a photograph which shows the cross section of an Example and a comparative example.

  The pulp mixed nonwoven fabric wipe of this embodiment and the manufacturing method thereof will be described.

The pulp-mixed nonwoven fabric wipe of this embodiment is a pulp-mixed nonwoven fabric in which pulp and chemical fibers are entangled.
The pulp-mixed nonwoven fabric wipe of this embodiment is a pulp-mixed nonwoven fabric in which the entanglement between the pulp and the chemical fiber is liquid-entangled with a liquid such as water, and is also referred to as a spunlace nonwoven fabric or a spunlace nonwoven fabric.

  The pulp can be selected from hardwood-derived pulp, conifer-derived pulp, and wastepaper-derived pulp. The average fiber length (hereinafter also referred to as fiber length) is preferably 3.0 to 5.0 mm. It is easy to be entangled with the chemical fiber described later. Among the pulps, the coniferous pulp is particularly preferable. The pulp derived from conifers has an average fiber length of 3.5 to 4.0 mm, is effectively entangled with the chemical fiber, has little fiber drop, and does not easily generate paper dust. Specifically, they are coniferous bleached kraft pulp (NBKP) and coniferous unbleached pulp (NUKP). The pulp preferably contains 95% by mass or more of this NBKP.

  The chemical fiber can use what is used for a hydroentangled nonwoven fabric. For example, a polyethylene fiber, a polypropylene fiber, a polyethylene terephthalate fiber, etc. are mentioned. A fiber made of a plurality of resins, for example, a chemical fiber having a core-sheath structure may be used. Preferably, it is a polyethylene fiber that is inexpensive, lightweight, can exhibit sufficient strength, and is easily entangled with water flow.

The basis weight of the pulp-mixed nonwoven fabric wipe according to this embodiment is 45 to 80 g / m ² . More preferably, it is 50-60 g / m < ² >. The strength required for wiping and sufficient liquid absorption are obtained.

On the other hand, the basis weight of the chemical fiber is 10 to 17 g / m ² , preferably 12 to 14 g / m ² . The blending ratio of the pulp is 75% by mass or more, preferably 80% by mass or more. This pulp blending ratio is a very high numerical value, and is excellent in terms of liquid absorbency. That is, when the blending ratio of the pulp is 75% by mass or more of the whole nonwoven fabric within the range of the basis weight of the chemical fiber, it is soft while having sufficient strength, and particularly excellent in liquid absorption.

  The thickness of the chemical fiber is desirably 18 to 22 μm. The entanglement with the pulp fibers, particularly the coniferous pulp, is strong and the pulp fibers are difficult to fall off.

  On the other hand, the pulp-mixed nonwoven fabric wipe of this embodiment has an aspect ratio of dry tensile strength of 3.0 or less, preferably 2.5 or less. Specific dry tensile strengths in the machine direction and the transverse direction are not necessarily limited, but are desirably 2,000 to 3,400 cN / 25 mm in the machine direction and 700 to 1,600 cN / 25 mm in the transverse direction. Within this range, the strength is sufficient for wiping. In addition, the measuring method of dry tensile strength is implemented by the method according to JIS P8113 (1998). Examples of the measuring device include “Universal Tensile Compression Tester TG-200N” manufactured by Minebea Co., Ltd.

  Here, the aspect ratio of the pulp-mixed nonwoven fabric wipe according to this embodiment is small. That is, a liquid-entangled pulp-mixed non-woven wipe is usually made by laminating a paper made of crepe paper or the like on a non-woven fabric sheet of chemical fiber (hereinafter also referred to as a synthetic non-woven fabric sheet), and then ejecting liquid from the paper lamination surface. Thus, the pulp fiber constituting the paper and the chemical fiber of the nonwoven fabric sheet are entangled. And the nonwoven fabric sheet of a chemical fiber does not have much difference in dry tensile strength in the vertical direction and the horizontal direction. Therefore, the aspect ratio of the pulp-mixed nonwoven fabric wipe is not significantly affected by the aspect ratio of the paper derived from the papermaking method. That is, the pulp-mixed nonwoven fabric wipe according to the present embodiment is characteristic without the influence of the aspect ratio derived from such paper. In addition, the example of a manufacturing method of the pulp mixed nonwoven fabric wipe which concerns is mentioned later.

On the other hand, the pulp-mixed nonwoven fabric wipe according to this embodiment has a difference of 100 or less in the measured value according to the Martindale method defined in JIS L 1096 E method (2010). Furthermore, it is desirable that the measured values on both sides are 20 or more. The Martindale method is a test for wear resistance. A polyurethane foam (apparent density: 0.03 g / cm, thickness: about 3 mm) is attached to a sample holder of a wear tester on the back surface of a test piece, and a woven felt ( Material: hair, unit mass: 750 g / m ² , thickness: 3 mm) on top of standard friction cloth (material: vertical / hair, horizontal / hair, fineness: vertical / R63 tex / 2, horizontal / R74 tex / 2, Mass: 215 g / m ² ) is placed on a friction table mounted in layers, and the pulp surface is rubbed 10 to 40 times and the nonwoven fabric surface is rubbed 80 to 120 times in multiple directions. Measure the number of times that is visually confirmed. The average of the four times is calculated and used as a measured value. In addition, the measured value in this embodiment is shown per unit. A specific example of the abrasion tester is a Martindale abrasion tester manufactured by Grotz-Beckert. The measurement is performed by using a standard friction cloth as a material to apply friction, a load of 9 Kpa, a WET condition, and a motion as a Lissajous. The WET condition is based on spraying the sample surface with a spray.

  Here, it is characteristic that the difference between the measured values in the Martindale method in the pulp-mixed nonwoven fabric wipe according to this embodiment is 100 or less. As described above, the liquid-entangled pulp-mixed nonwoven fabric wipe is made by laminating paper made of crepe paper or the like on a nonwoven fabric sheet of chemical fibers, and then jets liquid from the paper lamination surface. Differences are likely to occur in the measured values. In particular, the abrasion resistance on the paper surface is remarkably weak and the measured value tends to be low. The fact that the difference in front and back of the pulp-mixed nonwoven fabric wipe of this embodiment is small means that the pulp fibers are intertwined to the chemical fiber surface side by liquid entanglement and the entanglement between the fibers is good. Therefore, it is difficult for the pulp fibers to fall off. In addition, the example of a manufacturing method of the pulp mixed nonwoven fabric wipe which concerns is mentioned later.

  On the other hand, in the pulp mixed nonwoven fabric wipe according to the present embodiment, both the front and back MMD (fluctuation in friction coefficient) are preferably 0.200 or less, and the front / back difference is preferably 0.020 or less. MMD is one index of smoothness. When the MMD is in the above range, the smoothness is excellent, and the front / back difference in how the skin surface is sensed by sensory evaluation is small. In addition, MMD is a value measured using Kato Tech Co., Ltd. friction feeling tester KES-SE, KES-SESRU, and these equivalent machines. The MMD is a degree of variation indicating how much variation occurs from the MIU (average friction coefficient), and the smaller the numerical value, the smoother. The measurement conditions according to the present invention are substantially the same as the direction in which the tension is applied while bringing the contact surface of the friction element into contact with the surface of the measurement sample to which a tension of 20 g / cm is applied in a predetermined direction at a contact pressure of 25 g. Move 2 cm in the same direction at a speed of 0.1 cm / s. The measurement is performed 10 times, and the average value is taken as MMD. In addition, a standard attached piano wire sensor is used for the friction element. The piano wire sensor has 20 piano wires with a diameter of 0.5 mm adjacent to each other, and has a contact surface formed so that the length and width are both 10 mm. The contact surface is formed with a unit bulging portion whose tip is formed of 20 piano wires (with a radius of curvature of 0.25 mm).

  On the other hand, the pulp mixed nonwoven fabric wipe according to the present embodiment desirably has a difference in SMD (surface roughness) between the front and back surfaces of 0.7 or less. SMD is the roughness of the surface, and if the difference between the front and back of the SMD is in the above range, it is an indicator that the entanglement of the fibers is good. In addition, SMD is also a value measured using Kato Tech Co., Ltd. friction feeling tester KES-FB-4-AUTO, KES-KES-SE, KES-SESRU, and these equivalent machines.

  As described above, the pulp-mixed nonwoven fabric wipe according to this embodiment has a high pulp fiber blending ratio and excellent liquid absorbency, and there is little separation between the pulp fibers on the front and back, and the entanglement between the chemical fibers and the pulp fibers is good. It has become a thing. In the pulp-mixed nonwoven fabric wipe according to this embodiment, it is desirable not to apply a binder component that tends to lower the liquid absorbency.

Subsequently, the manufacturing method of the pulp mixed nonwoven fabric wipe which concerns on this embodiment is demonstrated. The pulp-mixed nonwoven fabric wipe according to this embodiment includes a step of laminating a dried pulp sheet obtained by dissolving dissolved pulp into a sheet on a synthetic fiber nonwoven sheet having a basis weight of 10 to 17 g / m ² . The synthetic nonwoven fabric sheet is desirably formed by a spunbond method or a melt blow method. The fiber types, fiber lengths, and fiber thicknesses of the chemical fibers constituting the synthetic nonwoven fabric sheet and the pulp fibers constituting the dissolving pulp are as described in the pulp-mixed nonwoven fabric wipe of the present embodiment.

  Desirably, the dried pulp sheet in which the dissolving pulp is formed into a sheet is used by discharging a pulp solution in which pulp fibers are dispersed and suspended in water onto a transport plane and compressing and drying with a heating drum into a sheet. . The drying temperature is 85 to 115 ° C, preferably 90 to 110 ° C. In the pulp solution, an appropriate auxiliary agent can be added as long as the effects of the present invention are not hindered. This dry pulp sheet has a small fiber orientation and a very small aspect ratio of dry tensile strength. In addition, the basis weight (basis weight) of the dried pulp sheet is such that the fiber blending ratio of the pulp is 75% by mass or more, preferably 80% by mass or more at the time of pulp mixed nonwoven fabric wipe in consideration of the yield at the time of hydroentanglement. Adjust as appropriate.

Next, in accordance with the spunlace technology, which is also called water jet technology, water needle technology, etc., water is sprayed on the dry pulp sheet surface of the laminated sheet in which the synthetic nonwoven fabric sheet and the dry pulp sheet are laminated, and the dry pulp A process of breaking the bond of the pulp in the sheet and hydroentangling the chemical fiber of the synthetic fiber nonwoven sheet and the pulp fiber of the dry pulp sheet is performed. Here, in the manufacturing method of the pulp mixing nonwoven fabric wipe of this embodiment, it is set as the nozzle with the nozzle diameter of 0.5-1.5 mmphi especially the nozzle which injects a water flow. More preferably, it is 0.75 to 1.25 mmφ. The water pressure is not necessarily limited, but is preferably about 100 to 110 bar. This is a higher value than the typical pressure (80-90 bar). Appropriate adjustments are made according to the type of chemical fiber. This nozzle diameter is smaller than the manufacturing method of the conventional pulp mixed nonwoven fabric wipe. In this embodiment, chemical fibers and pulp fibers are produced by spraying a water stream from a small-diameter nozzle onto a dry pulp sheet having a small fiber orientation and laminated on a synthetic nonwoven fabric sheet having a basis weight of 10 to 17 g / m ^2. Entanglement with the fiber becomes particularly good, and the pulp fiber enters the synthetic nonwoven fabric sheet side in particular, making it difficult for the pulp fiber to be detached from the front and back. In particular, when the preferred chemical fiber configuration and pulp fiber configuration are adopted, the movement of the fiber by the water flow is good, and the wipe according to the present embodiment can be produced effectively. That is, it is desirable that the dry pulp sheet contains 95% by mass or more of NBKP, and the thickness of the chemical fiber constituting the synthetic nonwoven fabric sheet is 18 to 22 μm.

  The laminated sheet thus hydroentangled is appropriately formed into a pulp-mixed nonwoven fabric sheet through a drying process, and then cut into a pulp-mixed nonwoven fabric wipe. These drying steps and cutting steps can be performed by known techniques.

  Subsequently, the pulp mixed nonwoven fabric wipes (Examples 1 and 2) manufactured by the manufacturing method according to the present embodiment and the conventional pulp mixed nonwoven fabric wipes (Comparative Examples 1 to 3) were tested.

  The test results are shown in Table 1 below together with the physical property values and measured values according to the examples and comparative examples. The tests performed are as follows. The fiber length was measured at Kayani / Fiber Lab, and the fiber thickness was observed and measured with an electron microscope. Moreover, the cross-sectional photograph of Example 1, the comparative example 1, and the comparative example 2 is shown in FIG.

(Dry tensile strength)
It was measured according to the tensile test of JIS P 8113 (1998). The test piece used was cut into a width of 25 mm (± 0.5 mm) and a length of about 150 mm in both the vertical and horizontal directions. As a tester, a load cell tensile tester TG-200N manufactured by Minebea Co., Ltd. was used. The holding interval was set to 100 mm. The measurement was performed by tightening both ends of the test piece to the grip of the testing machine, applying a tensile load in the vertical direction, and reading the indicated value (digital value) when the paper breaks. The tensile speed was 100 mm / min. Five sets of samples were prepared in each of the longitudinal direction and the transverse direction and measured 5 times each, and the average of the measured values was taken as the dry tensile strength in each direction. (Adjustment of the sample is JIS P 8111 (1998)) The aspect ratio is calculated from the measured value.

(Abrasion resistance test 1)
It was measured by the Martindale method defined in JIS L 1096 E method (2010). As the abrasion tester, a Martindale tester manufactured by Grotz-Beckert was used. The material to which friction was applied was a standard friction cloth, the load was 9 Kpa, WET conditions, and the motion was Lissajous. The WET condition is based on spraying the sample surface with a spray.

(Abrasion resistance test 2)
The nitrile rubber material measured by changing the material to which friction is applied from the standard friction cloth to the nitrile rubber material in the same procedure as in the friction test 1, is a nitrile glove (nitrile model model glove No. 600 manufactured by Este Corporation). ) Was punched out to 38 mφ with a punching jig attached to the measuring instrument. In addition, the selection of a nitrile glove is based on the actual condition that a pulp mixing nonwoven fabric wipe may be used for the glove user's hand-wiping.

[Water absorption]
The water absorption was measured as described in (1) to (5) below.
(1) The mass of the test piece is measured with an electronic balance (A & D HR300 or the like).
(2) Water at 25 ° C. is placed in a tray (for example, inner dimension: 215 mm × 160 mm) larger than the test piece so as to have a depth of about 20 mm.
(3) Spread the test piece on a rigid net (for example, 120 mm x 120 mm, mesh 15 mm) larger than the test piece, put it in the tray containing the water, and contact the water surface Immerse the test piece in the same manner.
(4) When water has sufficiently soaked into the surface of the test piece, raise the flat net directly above the surface of the water, pick the corner of the test piece with tweezers, and stand still for 30 seconds.
(5) The mass of the test piece absorbed after 30 seconds is measured with an electronic balance, and the amount of water absorption per 1 m ² is calculated by the following formula.
Water absorption (g / m ² ) = ((mass of the water-absorbed test piece measured in the above (4)) − (mass of the test piece measured in the above (1))) × 100 (note: converted to m ² Therefore, multiply by 100)

[Oil absorption]
The oil absorption was measured as shown in (1) to (5) below.
(1) The mass of the test piece is measured with an electronic balance (A & D HR300 or the like).
(2) 25 ° C. salad oil (Nisshin Salad Oil: manufactured by Nisshin Oillio Group Co., Ltd.) is put in a tray (for example, inner dimension: 215 mm × 160 mm) larger than the test piece so as to have a depth of about 20 mm.
(3) Spread the test piece on a rigid flat net (for example, 120 mm x 120 mm, mesh 30 mm) larger than the test piece, put it in a tray containing the salad oil, and place it on the oil surface. The specimen is soaked in contact.
(4) When the salad oil is sufficiently infiltrated to the surface of the test piece, raise the flat net directly above the oil level, leave it as it is for 30 seconds, pick the corner of the test piece with tweezers, and measure it in advance. Transfer the specimen to. At this time, it does not exceed 30 seconds from when the flat net is raised above the oil level to start resting until it is transferred to the measuring container.
(5) The mass of the measurement container containing the test piece is measured with an electronic balance, and the mass of the measurement container is subtracted from the measured value to calculate the mass of the test piece after oil absorption. Then, the amount of oil absorption per 1 m ² is calculated by the following formula.
Oil absorption (g / m ² ) = ((mass of test piece absorbed in (4) above) − (mass of test specimen measured in (1) above)) × 100 (Note: converted to m ² Therefore, multiply by 100)

[Water absorption speed]
The water absorption rate was measured as follows (1) to (4).
(1) A test piece of 100 mm × 100 mm is prepared.
(2) The test piece is placed on a base (for example, a tripod for an alcohol lamp) having a hole having a diameter of 40 mm or more in the center so that the central portion of the test piece is positioned on the hole.
(3) To a desired location near the center of the test piece, 300 μl of water at 25 ° C. is dropped with a micropipette from a height of 10 mm from the surface of the test piece. This dripping can be performed as the scale 300 using, for example, the ASONE pipette guy PG-1000.
(4) The time from the moment when the water from the micropipette comes into contact with the test piece to the time when the water of the test piece completely permeates is measured with a stopwatch, and the time is taken as the water absorption rate (sec). In addition, the completion | finish of infiltration is by confirming visually that the glossy reflection of water disappears from the test piece surface.

(Softness)
It measured according to the handle ohm method according to JISL1096E method. However, the test piece was 100 mm × 100 mm in size, and the clearance was 5 mm. The measurement was performed 5 times each in the longitudinal direction and the lateral direction with 1 ply, and the average value of 5 times in each of the longitudinal direction and the lateral direction was expressed in units of cN / 100 mm. Softness is one of the indices of softness.

(Surface roughness SMD)
The measurement was performed using an automated surface tester KES-FB-4-AUTO manufactured by Kato Tech Co., Ltd. While the contact surface of the friction element is brought into contact with the surface of the measurement sample to which a tension of 20 g / cm is applied in a predetermined direction at a contact pressure of 25 g, the velocity is 0.1 cm in the same direction as the tension is applied. It was moved 2 cm at / s. The friction piece was a standard 10 mm square piano wire sensor (1 piece). The initial load of the friction element is 0.49N. SMD is measured five times for each surface, and the average value is taken.

(MMD) (Friction resistance MIU)
The measurement was performed using an automated surface tester KES-FB-4-AUTO manufactured by Kato Tech Co., Ltd. While the contact surface of the friction element is brought into contact with the surface of the measurement sample to which a tension of 20 g / cm is applied in a predetermined direction at a contact pressure of 25 g, the velocity is 0.1 cm in the same direction as the tension is applied. It was moved 2 cm at / s. The friction piece was a standard 10 mm square piano wire sensor (20 pieces). MMD and MIU are measured five times for each surface, and the average value is taken.

  Looking at the results of each test, it can be said from the results of (Abrasion Resistance Test 1) and (Abrasion Resistance Test 2) that the examples of the present invention are excellent in abrasion resistance. Furthermore, the difference between the front and back sides is very small, and wear resistance can be achieved on the front and back sides. This is because the pulp fibers are sufficiently moved to reach the surface opposite to the pulp sheet contact surface in the synthetic nonwoven fabric sheet at the time of hydroentanglement, and the entanglement between the fibers proceeds and is firmly intertwined. This also appears in the cross-sectional photograph shown in FIG. In Example 1 shown in FIG. 1 (A), pulp fibers are uniformly present in the thickness direction, whereas in Comparative Example 1 shown in FIG. 1 (B) and FIG. 1 (C). In Comparative Example 2, pulp fibers are unevenly distributed.

  Moreover, also about the amount of water absorption, Example 1 and Example 2 are better than Comparative Example 1 and Comparative Example 2. Although better than Comparative Example 3, the difference is small. However, Comparative Example 3 has a very large difference in wear resistance. That is, it is thought that many pulp fibers are unevenly distributed on one side. Therefore, it is considered that the moisture retention at the portion where the pulp fibers are unevenly distributed becomes high, resulting in a high water absorption.

  Furthermore, in terms of the water absorption rate, Example 1 and Example 2 are significantly faster than Comparative Examples 1 to 3. Also, the difference between the front and back is small. This is because the aspect ratio is small, so there is no difference in the water dispersibility in the vertical and horizontal directions, and further, the pulp fibers are dispersed in the thickness direction and the entanglement with the chemical fibers is in a solid state. Can be considered.

  Next, looking at the amount of oil absorption, Example 1 and Example 2 are more dominant than Comparative Examples 1-3. This is because the retention of oil is enhanced by the presence of dispersed pulp fibers in the network of chemical fibers.

  On the other hand, looking at the friction coefficient (MIU) and MMD in Table 1, both the examples and the comparative examples are good and the difference between the front and back is not large. MIU and MMD are indicators of how people feel, and there is no significant difference from that perspective. However, looking at the actual surface roughness (SMD), Example 1 and Example 2 are not significantly different from Comparative Example 1 and Comparative Example 3, and are superior to Comparative Example 2. In other words, the present embodiment is smooth and has no difference between the front and the back in terms of how the person feels, and also has no difference in the actual surface properties. In other words, the pulp fiber has good dispersibility in the thickness direction, and the entanglement with the chemical fiber is proceeding firmly.

  As described above, the pulp-mixed nonwoven fabric wipe according to the present embodiment has a solid entanglement between pulp fibers and chemical fibers, is excellent in abrasion resistance, is excellent in liquid absorption, and has a small difference in front and back. It can be said that.

  DESCRIPTION OF SYMBOLS 1,101 ... Pulp mixing nonwoven fabric sheet, 2,102 ... Chemical fiber, 3,103 ... Pulp fiber.

Claims (4)

A pulp mixed nonwoven fabric in which pulp and chemical fiber are entangled,
The basis weight is 45-80 g / m ² ,
The basis weight of the chemical fiber is 10 to 17 g / m ² ;
The blending ratio of the pulp is 75% by mass or more,
The aspect ratio of dry tensile strength is 3.0 or less,
The difference between the measured values in the Martindale method specified in JIS L 1096 E method is 100 or less,
A pulp-mixed non-woven wipe characterized by that.   The pulp-mixed nonwoven fabric wipe according to claim 1, wherein the pulp contains 95% by mass or more of NBKP, and the thickness of the chemical fiber is 18 to 22 µm. A step of laminating a dry pulp sheet made of dissolved pulp into a sheet on a synthetic nonwoven fabric sheet having a basis weight of 10 to 17 g / m ² ;
A water entangling step of injecting a water flow from a nozzle having a nozzle diameter of 0.5 to 0.15 mmφ onto the surface of the dried pulp sheet;
A method for producing a pulp-mixed nonwoven fabric wipe, comprising:   The method for producing a pulp-mixed nonwoven fabric wipe according to claim 3, wherein the pulp sheet contains 95% by mass or more of NBKP, and the thickness of the chemical fiber constituting the synthetic fiber nonwoven fabric sheet is 18 to 22 µm.