Bottle-type wet tissue product

Abstract

To provide a bottle-type wet tissue product in which sheet texture is excellent, sheet deformation in being pulled out is suppressed so as to be easily taken out even when soft nonwoven fabric is used, and the liquid medicine is unlikely to remain inside the bottle after use.SOLUTION: A bottle-type wet tissue product includes a storage container that includes a wet tissue roll body in which a nonwoven fabric sheet is wound up and impregnated with liquid medicine, a container body which has an opening at the top end and stores the roll body, and a lid body that is attached in a detachable manner so as to close the opening of the container body. The percentage content of wood raw material contained in the sheet is 20% or more and 45% or less, the compression work load WC of the sheet measured by compression tester KES-G5 (manufactured by Kato Tech Co., Ltd.) is 0.15 gf cm / cm2 or more and 0.40 gf cm / cm2 or less, and the removal resistance value in removing a sheet from the lid body is 1.5 N or more and 6.0 N or less.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a bottle-type wet tissue product in which a non-woven fabric sheet is impregnated with a chemical solution.

Background Art

[0002] Wet tissues are used for wiping fingers and cleaning things such as desks. For wiping fingers, appropriate softness is required, and for wiping things, appropriate strength is required.

[0003] Wet tissues come in various shapes. There is a so-called bottle-type wet tissue in which a sheet with perforations wound in a roll is enclosed in a plastic bottle and a cap (optionally having a dispensing stopper such as an elastomer).

[0004] Since the bottle-type wet tissue winds the sheet in a roll, it can be made into a compact and large-capacity product. Also, the wet tissue in the bottle is not exposed to the outside air and touches the outside air for the first time after being taken out, so it has the advantage of being difficult to dry.

[0005] Now, wet tissues are manufactured by impregnating a sheet made of non-woven fabric with a chemical solution. For this sheet, a spunlace non-woven fabric in which wood fibers such as rayon and pulp and chemical fibers such as polyester are compounded by hydroentangling is generally used from the viewpoints of texture and chemical solution retention.

[0006] Wet tissues are used in various scenes, and roughly classified into interpersonal uses for use on fingers and skin, and object uses mainly for wiping things. In interpersonal uses, skin feel and softness are emphasized, and in object uses, strength and removability for wiping dirt are emphasized.

[0007] For example, Patent Document 1 states that when using composite fibers as a wiping sheet with suppressed skin irritation, it is preferable to include rayon fibers with high hygroscopicity and good touch. Preferred composite fibers include composite fibers composed of polyethylene terephthalate fibers and rayon fibers. In this case, it is more preferable that the rayon fibers are contained in the composite fibers at 40 to 60% by mass.

[0008] On the other hand, by using a non-woven fabric with a reduced ratio of rayon fibers and an increased ratio of polyester fibers described in Patent Document 1, a non-woven fabric with appropriate firmness even when absorbing liquid and better skin contact can be obtained. However, when using this non-woven fabric for a bottle-type wet tissue, since the ratio of rayon with excellent water retention is small, the chemical solution is squeezed out when pulling the sheet out from the outlet, not only does the chemical solution in the sheet decrease and the wiping property and usability deteriorate, but there is also a problem that the chemical solution remains inside the bottle after use.

[0009] Also, when the ratio of rayon fibers decreases, the strength during liquid absorption decreases and the sheet becomes softer. Therefore, when taking out the sheet, the sheet is likely to be deformed due to the resistance with the outlet and it becomes difficult to wipe. Although increasing the size of the outlet can improve the above-mentioned problems, this time a problem occurs where the sheets come out continuously.

[0010] Thus, in the prior art, it has been difficult to use a non-woven fabric with good texture and softness for a bottle-type wet tissue and make the take-out property and usability suitable.

Prior Art Documents

Patent Documents

[0011]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0012] The present invention has been made in view of such circumstances, and aims to provide a large-capacity bottle-type wet tissue product that has an excellent texture of the sheet, suppresses deformation of the sheet during extraction even when using a soft non-woven fabric, has good extractability, and is less likely to leave the chemical solution inside the bottle after use.

Means for Solving the Problems

[0013] The inventor conducted intensive studies and found that in a bottle-type wet tissue product including a storage container having a roll body of wet tissue impregnated with a chemical solution by winding a non-woven fabric sheet, a container body having an opening at the upper end for storing the roll body, and a lid body detachably attached to close the opening of the container body, by specifying the content rate of the woody raw material contained in the sheet, the compression work amount WC of the sheet, and the extraction resistance value when the sheet is taken out from the lid body within a predetermined numerical range, a bottle-type wet tissue product can be obtained that has an excellent texture of the sheet, suppresses deformation of the sheet during extraction even when using a soft non-woven fabric, has good extractability, and is less likely to leave the chemical solution inside the bottle after use, and thus the present invention was completed. That is, the present invention provides the following.

[0014] (1) A first aspect of the present invention is a bottle-type wet tissue product including a storage container having a roll body of wet tissue impregnated with a chemical solution by winding a non-woven fabric sheet, a container body having an opening at the upper end for storing the roll body, and a lid body detachably attached to close the opening of the container body, wherein the content rate of the woody raw material contained in the sheet is 20% or more and 45% or less, the compression work amount WC by a compression tester KES-G5 (manufactured by Kato Tech Co., Ltd.) of the sheet is 0.15 gf·cm / cm 2 or more and 0.40 gf·cm / cm 2 or less, and the extraction resistance value when the sheet is taken out from the lid body is 1.5 N or more and 6.0 N or less.

[0015] (2) The second aspect of the present invention is the bottle-type wet tissue product described in (1), characterized in that the impregnation ratio of the chemical solution in the sheet is 250% or more and 310% or less.

[0016] (3) The third aspect of the present invention is the bottle-type wet tissue product described in (1), characterized in that the D value, which is the measured value by the tissue softness measuring device TSA in the absolutely dry state of the sheet, is 2.0 mm / N or more and 4.0 mm / N or less.

[0017] (4) The fourth aspect of the present invention is the bottle-type wet tissue product described in (1), characterized in that the basis weight of the sheet in the absolutely dry state is 27 g / m 2 or more and 38 g / m 2 or less.

[0018] (5) The fifth aspect of the present invention is the bottle-type wet tissue product described in (1), characterized in that the MD strength including the perforation part in the wet state of the sheet is 150 gf / sheet width or more and 500 gf / sheet width or less.

[0019] (6) The sixth aspect of the present invention is the bottle-type wet tissue product described in (1), characterized in that the TS7 value, which is the measured value by the tissue softness measuring device TSA in the absolutely dry state of the sheet, is 4.0 dBV 2 rms or less.

Advantages of the Invention

[0020] According to the present invention, it is possible to provide a bottle-type wet tissue product with excellent texture of the sheet, which can suppress deformation of the sheet during extraction, has good extractability, and is such that the chemical solution hardly remains inside the bottle after use, even when using a soft non-woven fabric.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0022] Hereinafter, embodiments for carrying out the present invention (hereinafter, simply referred to as "the present embodiment") will be described in detail. The following present embodiment is an exemplification for explaining the present invention and is not intended to limit the present invention to the following content. The present invention can be appropriately modified and implemented within the scope of its gist.

[0023] In the specification, the "MD direction" means the manufacturing line direction (conveying direction) during the manufacture of the wet tissue roll body.

[0024] <Bottle-Type Wet Tissue Product> A bottle-type wet tissue product 1 according to an embodiment of the present invention includes, as shown in FIGS. 1 and 2, a wet tissue roll body 10 (hereinafter, also simply referred to as a roll body 10) obtained by winding a non-woven fabric sheet 10x (hereinafter, also referred to as a wet tissue 10x) and impregnating it with a chemical solution, a container body 21 having an opening at the upper end and storing the roll body 10, and a lid body 22 detachably attached so as to close the opening of the container body 21, and a wet tissue storage container 20 (hereinafter, also simply referred to as a storage container 20).

[0025] (Storage Container) The container body 21 of the wet tissue storage container 20 is not particularly limited in shape as long as it can store the roll body 10. However, from the viewpoint of ease of carrying, as shown in FIG. 1, it is preferably formed with a constricted portion in the central portion in the height direction where the diameter continuously decreases from each of the upper end portion and the lower end portion (a so-called waist shape).

[0026] (Lid Body) In the lid 22 of the storage container 20, the material and shape of the extraction opening are not limited. For example, as shown in FIG. 1, it may include a through hole 221, an introduction hole 222 provided near the through hole 221, a guiding path 223 that connects the through hole 221 and the introduction hole 222, and a small lid 224 that opens and closes the through hole 221, the introduction hole 222, and the guiding path 223. Further, the lid 22 is preferably attached so as to block the through hole 221 and includes a middle plug 226 made of an elastomer having a pulling-out hole 225 for pulling out the sheet 10x. By providing the middle plug 226, it becomes easier to cut the perforations 10c of the sheet 10x described later during extraction, and the extractability is easily optimized.

[0027] <Wet tissue> (Roll body) As shown in FIG. 2, the wet tissue roll body 10 according to an embodiment of the present invention is obtained by winding a non-woven fabric sheet 10x and impregnating it with a chemical solution. As shown in FIG. 2, among the surfaces of the sheet 10x, the surface directed to the outside of the roll is referred to as the front surface 10a (the front surface of the sheet 10x), and the surface directed to the center of the roll is referred to as the back surface 10b (the back surface of the sheet 10x). Also, the end of the sheet 10x is referred to as the outermost peripheral edge 10e of the roll body 10.

[0028] (Number of sheets in the roll body) The lower limit of the number of sheets 10x included in the roll body 10 (that is, the number of sheets 10x contained in the storage container 20 in the wet tissue product 1) is preferably 50 sheets or more, more preferably 55 sheets or more, and even more preferably 60 sheets or more. The upper limit of the number of sheets is preferably 130 sheets or less, more preferably 120 sheets or less, and even more preferably 100 sheets or less. If the number of sheets is less than 50, the wet tissue product 1 cannot be said to have a large capacity. If the number of sheets exceeds 130, it becomes necessary to tightly wind the roll, and the perforations are likely to break during winding, resulting in poor extractability.

[0029] (Sheet winding length of the roll body) The lower limit of the winding length of the sheet 10x included in the roll body 10 is preferably 5 m or more, more preferably 6.6 m or more, and even more preferably 7.8 m or more. The upper limit is preferably 32.5 m or less, more preferably 26.4 m or less, and even more preferably 20 m or less. If the winding length is less than 5 m, the wet tissue product 1 cannot be considered to have a large capacity. If the winding length exceeds 32.5 m, it becomes necessary to tightly wind the roll, and the perforations are likely to break during winding, resulting in poor extractability.

[0030] (Number of plies) The sheet 10x is perforated with perforations 10c in the width direction at substantially equal intervals in the flow direction, and one sheet 10x is defined between the perforations 10c. The sheet 10x is preferably 1-ply or 2-ply, and more preferably 1-ply.

[0031] (Sheet length) The lower limit of the sheet length of one sheet 10x is preferably 100 mm or more, more preferably 120 mm or more, and even more preferably 130 mm or more. The upper limit is preferably 250 mm or less, more preferably 220 mm or less, and even more preferably 200 mm or less. If the sheet length is within this numerical range, the extractability of the sheet 10x from the storage container 20 will be good. The measurement of the sheet length is performed using a JIS-standard metal ruler (for example, Shinwa measuring straight ruler stainless steel 60 cm), and three points at both ends and the center are measured along the direction (MD direction) in which the sheet 10x is fed out from the roll body 10, and the average of the three points is taken as the measured value.

[0032] (Sheet width) The lower limit of the sheet width in one sheet 10x is preferably 100 mm or more, more preferably 120 mm or more, and still more preferably 130 mm or more. The upper limit is preferably 180 mm or less, more preferably 160 mm or less, and still more preferably 150 mm or less. If the sheet width is within this numerical range, the extractability of the sheet 10x from the storage container 20 will be good. Note that the sheet width is measured using a JIS-standard metal ruler (for example, Shinwa Measuring Straightedge Stainless Steel 60 cm), and three points at both ends and in the center are measured along the direction perpendicular to the direction in which the sheet 10x is unwound from the roll body 10 (CD direction), and the average of the three points is taken as the measured value.

[0033] (Length of the perforation cut part) The perforation 10c is formed from a cut part and a non-cut part. The lower limit of the length of the cut part is preferably 8 mm or more, more preferably 10 mm or more, and still more preferably 15 mm or more. The upper limit is preferably 25 mm or less, more preferably 22 mm or less, and still more preferably 20 mm or less. If the length of the cut part of the perforation 10c is within this numerical range, the extractability of the sheet 10x from the storage container 20 will be good. Note that the length of the cut part is the average obtained by adding up the lengths of all the cut parts on the perforation 10c (excluding the cut parts at both ends of the sheet 10x) and dividing by the number of measurements (number of cut parts excluding both ends).

[0034] (Length of the non-cut part of the perforation) The lower limit of the length of the non-cut part (connecting part) of the perforation 10c is preferably 0.1 mm or more, more preferably 0.2 mm or more, and still more preferably 0.3 mm or more. The upper limit is preferably 0.8 mm or less, more preferably 0.6 mm or less, and still more preferably 0.4 mm or less. If the length of the non-cut part of the perforation 10c is within this numerical range, the extractability of the sheet 10x from the storage container 20 will be good. Note that the length of the non-cut part is the average obtained by adding up the lengths of all the non-cut parts on the perforation 10c and dividing by the number of measurements (number of non-cut parts).

[0035] (Perforation bonding ratio) In the stitch 10c, the lower limit of the bonding rate (length of the non-cut part ÷ (length of the cut part + length of the non-cut part)) is preferably 1% or more, more preferably 1.3% or more, and still more preferably 1.5% or more. The upper limit is preferably 3% or less, more preferably 2.5% or less, and still more preferably 2.3% or less. If the bonding rate of the stitch 10c is within this numerical range, the extractability of the sheet 10x from the storage container 20 will be good.

[0036] (Number of non-cut parts of the stitch) The lower limit of the number of non-cut parts per sheet 10x (one stitch 10c) is preferably 5 or more, more preferably 6 or more, and still more preferably 7 or more. The upper limit is preferably 15 or less, more preferably 13 or less, and still more preferably 11 or less. If the number of non-cut parts of the stitch 10c is within this numerical range, the extractability of the sheet 10x from the storage container 20 will be good.

[0037] (Material of the sheet) The non-woven fabric used for the sheet 10x may be a mixture of general synthetic fibers and pulp fiber webs, or may be a product in which a pulp fiber web is laminated on synthetic fibers and then integrated by hydroentangling. From the viewpoints of texture and chemical solution retention, a spunlace non-woven fabric in which wood fibers such as rayon and pulp are compounded with chemical fibers such as polyester by hydroentangling is preferable, and it is more preferable that it does not contain heat-fused fibers. The surface shape of the non-woven fabric used for the sheet 10x is not particularly limited, but from the viewpoint of texture, a plane type without unevenness due to embossing is preferable.

[0038] (Synthetic fiber) The synthetic fiber preferably contains one or more synthetic fibers selected from the group consisting of, for example, nylon, vinylon, polyester, acrylic, polyethylene, polypropylene, and polystyrene.

[0039] (Pulp fiber) Pulp fibers use common pulp fibers (wood pulp) such as softwood kraft pulp (NBKP) and hardwood kraft pulp (LBKP). Among them, it is preferable to include softwood kraft pulp (NBKP) and hardwood kraft pulp (LBKP). Also, the content ratio of NBKP to LBKP in the pulp fibers is preferably 50:50 or more and 100:0 or less, more preferably 70:30 or more and 100:0 or less, still more preferably 90:10 or more and 100:0 or less, and most preferably 100:0.

[0040] As NBKP, for example, fibers composed of radiata pine, slash pine, southern pine, lodgepole pine, spruce, and Douglas fir are preferable. Note that NUKP can be used instead of NBKP, and LUKP can be used instead of LBKP. Also, other fibers used in paper products such as rayon, lyocell, and cotton can be used without particular limitation.

[0041] (Wood raw material content rate in the sheet) The content rate of the wood raw material contained in sheet 10x is 20% or more and 45% or less. If the content rate of the wood raw material is less than 20%, sheet 10x cannot hold the chemical solution sufficiently and the chemical solution tends to remain in storage container 20. If the content rate of the wood raw material exceeds 45%, the texture of sheet 10x is inferior. The lower limit value of the content rate of the wood raw material contained in sheet 10x is preferably 25% or more, more preferably 30% or more. The upper limit value is preferably 43% or less, more preferably 40% or less.

[0042] The wood raw material contained in sheet 10x in the above content rate refers to, for example, rayon, lyocell, cotton, pulp, etc. The content rate of the wood raw material contained in sheet 10x is measured by the "JIS L 1030-2 Test Method for Blending Ratio of Textile Products".

[0043] (Grammage of the absolutely dry sheet) The grammage of sheet 10x in the absolutely dry state is 27 g / m 2 or more and 38 g / m 2 or less is preferable. If the grammage is 27 g / m 2If it is less than that, the texture of the sheet 10x will be inferior. When the basis weight exceeds 38 g / m 2 , the withdrawal resistance of the sheet 10x increases, and the chemical solution remains inside the storage container 20 after use. The lower limit value of the basis weight of the sheet 10x in the absolutely dry state is preferably 28 g / m 2 or more, more preferably 30 g / m 2 or more. The upper limit value is preferably 36 g / m 2 or less, more preferably 35 g / m 2 or less. Note that the basis weight of the sheet 10x in the absolutely dry state is measured in accordance with JIS P 8124.

[0044] (Thickness of the sheet) For the sheet 10x, when a load of 0.5 gf / cm 2 is applied by a KES compression tester, the lower limit value of the thickness (T 0 ) of the sheet 10x is preferably 350 μm or more, more preferably 380 μm or more, and still more preferably 400 μm or more. The upper limit value is preferably 600 μm or less, more preferably 550 μm or less, and still more preferably 500 μm or less. If the thickness is less than 350 μm, the texture is inferior, and the withdrawal resistance is small, so that the sheets come out continuously. If the thickness exceeds 600 μm, the sheet 10x becomes bulky, and the number of sheets 10x included in the roll body 10 decreases, and it cannot be said to have a large capacity. Also, the chemical solution is squeezed at the outlet, and the chemical solution remains inside the bottle.

[0045] The thickness T 0 of the sheet 10x is measured using a KES-G5 compression tester (manufactured by Kato Tech Co., Ltd.). A sample obtained by cutting a sheet 10x impregnated with a chemical solution to a size of 140 mm × 200 mm is placed between a pressure plate and a pressure receiving plate of 2 cm 2 , the pressure plate is lowered at a speed of 0.002 cm / sec, and the pressure that changes at that time and the thickness of the sample at that time are measured. When the sheet length and / or sheet width of the sheet 10x is less than the size of 140 mm × 200 mm, the corresponding sheet length and / or sheet width is used as a sample without cutting. At this time, the thickness T 0 is the pressure of 0.5 gf / cm 2Let the thickness (μm) of the sample be the thickness T 0 The value is the value calculated as the average value of 10 measurements. Note that the thickness (T 0 ) of the nonwoven fabric can be adjusted by known methods such as the pressure of the water flow intersection, the wire pattern, the composition, etc. of the nonwoven fabric described later.

[0046] (Chemical solution) The chemical solution impregnated into the sheet 10x may be formulated with alcohol, moisturizing agent, preservative, antibacterial agent, stabilizer, etc. usually used in wet tissues. Note that it is preferably ethanol-free from the viewpoint of irritation to the skin.

[0047] (Impregnation ratio of chemical solution) The impregnation ratio of the chemical solution into the sheet 10x is preferably 250% or more and 310% or less. If the impregnation ratio is less than 250%, the chemical solution will volatilize before using up one sheet of the sheet 10x, resulting in less wet feeling and poor texture of the sheet 10x. If the impregnation ratio exceeds 310%, the chemical solution impregnated in the sheet 10x will be squeezed out, and the chemical solution will remain inside the storage container 20 after use. The lower limit value of the impregnation ratio is more preferably 260% or more, and even more preferably 270% or more. The upper limit value is more preferably 300% or less, and even more preferably 290% or less.

[0048] The method for measuring the impregnation ratio is as follows: First, measure the area and weight of the sheet 10x, then wash the sheet 10x with an alcohol solution and dry it completely. After complete drying, condition it in an environment of 23°C and 50% RH, and measure the weight of the sheet 10x. Then, obtain the weight of the chemical solution impregnated per 1 g of the sheet 10x as a percentage, which is defined as the impregnation ratio.

[0049] (Withdrawal resistance value of the sheet) When the extraction resistance value for removing the sheet 10x from the lid 22 is 1.5 N or more and 6.0 N or less. If the extraction resistance value is less than 1.5 N, the sheet 10x is difficult to cut at the perforations 10c, and the sheet 10x is likely to come out continuously, resulting in poor extractability. If the extraction resistance exceeds 6.0 N, the chemical solution impregnated in the sheet 10x is squeezed, and the chemical solution remains inside the storage container 20 after use. The lower limit value of the extraction resistance value is preferably 1.7 N or more, more preferably 2.0 N or more. The upper limit value is preferably 5.5 N or less, more preferably 5.0 N or less. Note that the extraction resistance value can be adjusted by the shape and hardness of the extraction opening.

[0050] The extraction resistance value of the sheet can be measured using a tensile testing machine (STB - 1225S, manufactured by A&D Company, Limited) in accordance with the tensile test method of JIS P 8113, and is carried out under the standard conditions specified in JIS P 8111. First, set the sheet 10x so that it protrudes about 10 mm from the extraction opening and pull it out by hand. Then, manually set (pull out) the next sheet 10x so that it protrudes about 20 mm.

[0051] Next, grip the sheet 10x with a gripping tool (width 75 mm) and fix it by sandwiching it 20 mm in the flow direction, and hold it by hand so that the storage container 20 does not move. Then, pull it at a tensile speed of 100 mm / min and collect measurement data. The data is acquired every 16.7 μm, and the data from 40 mm to 150 mm (measurement length 110 mm) after the start of measurement is averaged, and this is taken as the extraction resistance (N). However, if the perforations 10c are included from 40 mm to 150 mm after the start of measurement, the distance after the start of measurement can be shortened to, for example, 40 mm to 90 mm (measurement length 50 mm) so as not to include the perforations 10c. The measurement is carried out 5 times for each sample, and the average value is taken as the extraction resistance value. Note that if the sheet 10x breaks in the middle or cannot be pulled out due to twisting of the sheet 10x inside the storage container 20, etc., it is removed from the measurement data.

[0052] (Work of compression WC of the sheet) The work of compression WC of the sheet 10x is 0.15 gf·cm / cm2 Above 0.40 gf·cm / cm 2 The following applies. When the compression work amount WC is less than 0.15 gf·cm / cm 2 the texture of the sheet 10x is poor. When the compression work amount WC exceeds 0.40 gf·cm / cm 2 the chemical solution impregnated in the sheet 10x is squeezed out and chemical solution remains inside the storage container 20 after use. The lower limit value of the compression work amount WC is preferably 0.20 gf·cm / cm 2 or more, more preferably 0.25 gf·cm / cm 2 or more. The upper limit value is preferably 0.35 gf·cm / cm 2 or less, more preferably 0.30 gf·cm / cm 2 or less. Here, the higher the value of the compression work amount WC, the easier it is to be compressed. Note that the compression work amount WC can be adjusted by the water flow entanglement conditions during non-woven fabric production, the thickness of the fibers used, and the formulation.

[0053] The compression work amount WC is measured using a compression tester KES-G5 (manufactured by Kato Tech Co., Ltd.). A sample cut to a size of 140 mm × 200 mm is placed between the pressure plate and the pressure receiving plate of 2 cm 2 and the pressure plate is lowered at a speed of 0.020 cm / sec, and the changing pressure and the thickness of the sample at that time are measured. T 0 is the thickness (μm) of the sample when the pressure is 5 gf / cm 2 and T m is the thickness (μm) of the sample when the pressure is 50 gf / cm 2 The values of T 0 and T m are values calculated as the average value after performing 10 measurements. WC is the compression work amount, and the average value of 10 times is similarly calculated.

[0054] (D value according to TSA of the absolutely dry sheet) The D value indicating the rigidity of the sheet 10x in the bone-dry state is preferably 2.0 mm / N or more and 4.0 mm / N or less. If the D value is less than 2.0 mm / N, the sheet 10x is hard and has poor texture. If the D value exceeds 4.0 mm / N, the sheet 10x is likely to deform after being taken out of the storage container 20. The lower limit value of the D value is more preferably 2.2 mm / N or more, and even more preferably 2.4 mm / N or more. The upper limit value is more preferably 3.6 mm / N or less, and even more preferably 2.8 mm / N or less. Note that the D value can be adjusted by the water flow entanglement conditions during nonwoven fabric production, the thickness of the fibers used, and the formulation.

[0055] The D value is measured using a tissue softness analyzer (TSA). The D value is the average of five measurements of the rigidity D of the bone-dry sheet 10x as the measured value.

[0056] (TS7 value of the bone-dry sheet by TSA) The TS7 value indicating the softness of the sheet 10x in the bone-dry state is preferably 4.0 dBV 2 rms or less, more preferably 3.5 dBV 2 rms or less, even more preferably 3.0 dBV 2 rms or less. If the TS7 value exceeds 4.0 dBV 2 rms, the texture of the sheet 10x is poor. Note that the TS7 value can be adjusted by the water flow entanglement conditions during nonwoven fabric production, the thickness of the fibers used, and the formulation.

[0057] The TS7 value is measured using a tissue softness analyzer (TSA). The TS7 value is the average of five measurements of the front and back of the bone-dry sheet 10x as the measured value.

[0058] (MD strength of the wet sheet) The MD strength including the perforation 10c part in the wet state of the sheet 10x is preferably 150 gf / sheet width or more and 500 gf / sheet width or less. If the MD strength is less than 150 gf / sheet width, when the sheet 10x is taken out from the storage container 20, the sheet 10x may be cut unintentionally at the perforation 10c, and the extractability of the sheet 10x is poor. If the MD strength exceeds 500 gf / sheet width, when the sheet 10x is taken out from the storage container 20, the sheet 10x cannot be cut at the perforation 10c, and the sheet 10x will come out continuously. The lower limit value of the MD strength of the sheet 10x is more preferably 200 gf / sheet width or more, and even more preferably 250 gf / sheet width or more. The upper limit value is more preferably 450 gf / sheet width or less, and even more preferably 400 gf / sheet width or less.

[0059] The method for measuring the MD strength including the perforation 10c part is as follows. Set it on the tensilon universal testing machine so that the perforation 10c is perpendicular to the tensile direction of the tensilon universal testing machine and the distance between the chucks is 100 mm. Adjust the dimension in the width direction of the sample (the dimension in the direction perpendicular to the tensile direction of the tensilon universal testing machine) to the sheet width, and set the perforation 10c (sheet width) in the center between the chucks in that direction. Then, pull at a speed of 100 mm / min and measure the tensile strength until it breaks from the perforation 10c. Measure 6 times and calculate the average value.

[0060] (Method for manufacturing wet tissue products) As a method for manufacturing the wet tissue product 1 according to the present embodiment, it can be manufactured by the same steps as those for ordinary wet tissue products and the like. Specifically, first, as a method for manufacturing the wet tissue roll body 10, the wet tissue roll body 10 can be obtained through steps such as (1) manufacturing non-woven fabric, (2) slitting and perforation 10c processing, and (3) roll winding and chemical liquid impregnation. At this time, the timing of chemical liquid impregnation is preferably after the roll winding process.

[0061] (1)Regarding the production of non-woven fabric, the process is not particularly limited as long as it is a general non-woven fabric production method. However, it preferably includes, mainly, (1-1) a process of producing a web, (1-2) a process of three-dimensionally entangling fibers, (1-3) a process of removing (drying) moisture and melting heat-fusible binder fibers by heat treatment, etc.

[0062] In addition, when the sheet 10x is integrated by the above-described water flow entanglement, the well-known water flow entanglement technology of synthetic fiber and pulp fiber web can be used, and such technology is described in detail in, for example, Japanese Patent No. 6758116. Thereafter, the wet tissue roll body 10 is stored in the container body 21, and by closing the lid body 22, the wet tissue product 1 is obtained.

[0063] As described above, according to the present embodiment, it is possible to provide a bottle-type wet tissue product in which the texture of the sheet is excellent, deformation of the sheet at the time of taking out is suppressed even when a soft non-woven fabric is used, the take-out property is good, and the chemical solution hardly remains inside the bottle after use.

Examples

[0064] Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples at all.

[0065] Under each condition shown in Tables 1 to 3, wet tissue products in which the roll bodies of wet tissues of Examples 1 to 25 and Comparative Examples 1 to 12 were stored in a storage container provided with a container body and a lid body were produced, and the following evaluations were performed.

[0066] 1. Small amount of chemical solution remaining in the storage container after use Thirty monitors evaluated the amount of chemical solution remaining in the container (bottle) after all wet tissues (sheets) were taken out from the storage container of the wet tissues in the following four grades. ◎: The number of people who answered that there was a large amount of chemical solution remaining in the bottle was less than 3 ○: The number of people who answered that there was a large amount of chemical solution remaining in the bottle was 3 to 4 △: The number of people who answered that there was a large amount of liquid medicine remaining in the bottle was 5 to 9 people ×: The number of people who answered that there was a large amount of liquid medicine remaining in the bottle was 10 or more people

[0067] 2. Texture of the sheet Thirty monitors evaluated the texture of a wet tissue (sheet) when taking out one wet tissue (sheet) from the storage container of the wet tissue on a four - point scale as follows. ◎: The number of people who answered that the texture was poor was less than 3 people ○: The number of people who answered that the texture was poor was 3 to 4 people △: The number of people who answered that the texture was poor was 5 to 9 people ×: The number of people who answered that the texture was poor was 10 or more people

[0068] 3. Difficulty of sheet deformation Thirty monitors evaluated the difficulty of deforming a wet tissue (sheet) when taking out one wet tissue (sheet) from the storage container of the wet tissue on a four - point scale as follows. ◎: The number of people who answered that there was sheet deformation was less than 3 people ○: The number of people who answered that there was sheet deformation was 3 to 4 people △: The number of people who answered that there was sheet deformation was 5 to 9 people ×: The number of people who answered that there was sheet deformation was 10 or more people

[0069] 4. Ease of sheet removal Thirty monitors evaluated the ease of removal when taking out one wet tissue (sheet) from the storage container of the wet tissue on a four - point scale as follows. ◎: The number of people who answered that it was difficult to take out the sheet was less than 3 people ○: The number of people who answered that it was difficult to take out the sheet was 3 to 4 people △: The number of people who answered that it was difficult to take out the sheet was 5 to 9 people ×: The number of people who answered that it was difficult to take out the sheet was 10 or more people

[0070] Table 1 to 3 show the conditions and evaluation results of each example, and Table 3 shows the conditions and evaluation results of each comparative example.

[0071]

Table 1

[0072]

Table 2

[0073]

Table 3

[0074] From the above, according to this example, it was confirmed that a bottle-type wet tissue product can be obtained, which has excellent texture of the sheet, can suppress the deformation of the sheet during taking out even when using a soft non-woven fabric, has good take-out property, and is less likely to leave the chemical solution inside the bottle after use.

Explanation of Signs

[0075] 1 Bottle-type wet tissue product 10 (Wet tissue) roll body 10a Surface 10b Back surface 10c Perforation 10e Edge 10x Wet tissue (sheet) 20 (Wet tissue) storage container 21 Container body 22 Lid 221 Through hole 222 Introduction hole 223 Guide path 224 Small lid 225 Pull-out hole 226 Inner stopper

Claims

1. a roll body of wet tissues impregnated with a chemical solution by winding a non-woven fabric sheet, a storage container including a container body having an opening at an upper end for storing the roll body, and a lid detachably attached to close the opening of the container body, wherein the content rate of the woody raw material contained in the sheet is 20% or more and 45% or less, The compression work amount WC of the sheet by a compression testing machine KES-G5 (manufactured by Kato Tech Co., Ltd.) is 0.15 gf·cm / cm ２ or more and 0.40 gf·cm / cm ２ or less, and a bottle-type wet tissue product, characterized in that a withdrawal resistance value when the sheet is withdrawn from the lid is 1.5 N or more and 6.0 N or less.

2. The bottle-type wet tissue product according to claim 1, characterized in that an impregnation magnification of the chemical solution in the sheet is 250% or more and 310% or less.

3. The bottle-type wet tissue product according to claim 1, characterized in that a D value, which is a measured value by a tissue softness measuring device TSA in a completely dry state of the sheet, is 2.0 mm / N or more and 4.0 mm / N or less.

4. The basis weight of the sheet in the absolutely dry state is 27 g / m ２ or more and 38 g / m ２ or less, and the bottle-shaped wet tissue product according to claim 1, characterized in that.

5. The bottle-type wet tissue product according to claim 1, characterized in that an MD strength including a perforation part in a wet state of the sheet is 150 gf / sheet width or more and 500 gf / sheet width or less.

6. The TS7 value, which is the measured value by the tissue softness measuring device TSA in the absolutely dry state of the sheet, is 4.0 dBV ２ rms or less, and the bottle-type wet tissue product according to claim 1

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