JP2022102716A - Sanitary tissue paper storage box - Google Patents

Abstract

To provide a sanitary tissue paper storage box which has good sanitary tissue paper taking-out performance, and into which dust is hard to enter.SOLUTION: A sanitary tissue paper storage box has sanitary tissue papers 20 in a storage box 11, and does not have a film at a take-out port 13 of the storage box 11. The number of sets of sanitary tissue papers 20 is 60 sets or more and 160 sets or less, a basis weight of the storage box 11 is 200 g/m2 or more and 450 g/m2 or less, a height of the storage box 11 is 35 mm or more and 76 mm or less, a length orthogonal to a longer direction at a midship part of the take-out port 13 is 30 mm or more and 65 mm or less, a length orthogonal to the longer direction at both end parts of the take-out port 13 is 8 mm or more and 40 mm or less, the length orthogonal to the longer direction at the midship part of the take-out port 13 is larger than the length orthogonal to the longer direction at both end parts of the take-out port 13, and a length ratio of the length in the longer direction of the take-out port 13 to the length orthogonal to a pull-out direction of the sanitary tissue paper 20 is 60% or more and 103% or less.SELECTED DRAWING: Figure 1

Description

The present invention relates to a storage box containing hygienic tissue paper.

In recent years, storage boxes containing thin paper, which contains hygienic thin paper such as tissue paper, have been made lighter and more compact. For producers, it is possible to reduce the production cost of storage boxes and the cost of transporting products, and for consumers, it is possible to simplify the take-out work when purchasing products and reduce the storage space at home. ..
Many storage boxes containing tissue paper have a film at the outlet, but due to the separation of garbage, it is necessary to remove the film from the storage box and dispose of it, so in recent years, the outlet has become filmless. It is progressing (see Patent Documents 1 to 3). Such storage boxes are also called filmless cartons.

Japanese Unexamined Patent Publication No. 2000-53176 Japanese Unexamined Patent Publication No. 2009-102078 Japanese Unexamined Patent Publication No. 2010-13181

However, in the filmless carton, when the sanitary tissue paper is pulled out, the edge of the take-out port rubs directly against the sanitary tissue paper, and there is a problem that the take-out resistance is high and the take-out property is inferior as compared with the storage box using the film.
If the long side of the take-out port is lengthened, the take-out property is improved, but the hygienic tissue paper cannot stand on its own and tends to drop back (indicating a phenomenon of falling into the box). Further, if the short side direction is too long, dust easily enters, and if it is narrow, it is difficult to pick the first set. Further, when the basis weight of the filmless carton is too high, the sanitary tissue paper is strongly caught at the time of taking out, the sanitary tissue paper is easily torn, and the takeout property is inferior. On the contrary, if the basis weight is too low, the strength of the carton is lowered, the take-out port is easily bent, and the take-out property is inferior. As described above, it has been difficult for the conventional filmless carton to satisfy all of the ease of taking out, the difficulty of entering dust, and the ease of picking.

The present invention has been made in view of the above circumstances, and is a filmless storage box containing sanitary tissue paper, which has good removalability of the sanitary tissue paper and which prevents dust from entering the carton. The purpose is to provide.

The present invention is a storage box containing sanitary thin leaf paper having sanitary thin leaf paper inside the storage box and having no film at the outlet of the storage box, and the number of sets of sanitary thin leaf paper is 60 or more and 160 or less. The basis weight of the storage box is 200 g / m ² or more and 450 g / m ² or less, the height of the storage box is 35 mm or more and 76 mm or less, and the length in the direction orthogonal to the longitudinal direction in the central portion of the longitudinal direction of the outlet. However, the length is 30 mm or more and 65 mm or less, and the length in the direction orthogonal to the longitudinal direction at both ends in the longitudinal direction of the outlet is 8 mm or more and 40 mm or less, and is orthogonal to the longitudinal direction in the central portion of the longitudinal direction of the outlet. The length in the direction is larger than the length in the direction orthogonal to the longitudinal direction at both ends of the outlet in the longitudinal direction.
A storage box containing sanitary tissue paper whose value represented by the following formula (1) is 60% or more and 103% or less.
Length in the longitudinal direction of the take-out port (mm) / Length in the direction orthogonal to the withdrawal direction of sanitary tissue paper (mm) x 100 ... (1)

The length of the sanitary tissue paper in the drawing direction is preferably 150 mm or more and 240 mm or less, and the length in the direction orthogonal to the drawing direction of the sanitary tissue paper is preferably 160 mm or more and 260 mm or less.

The value represented by the following formula (2) is preferably 10% or more and 40% or less.
Height of storage box (mm) / Length of hygienic tissue paper in the drawer direction (mm) x 100 ... (2)

The value represented by the following formula (3) is preferably 28 or more and 76 or less.
(Height of storage box (mm) / Number of sets of hygienic tissue paper) x 100 ... (3)

The value represented by the following formula (4) is preferably 7 or more and 20 or less.
(Number of sets of sanitary tissue paper x thickness of sanitary tissue paper (μm) / 1000 / height of storage box (mm)) x 100 ... (4)

It is preferable that the sanitary tissue paper is a two-ply hand towel, the hygienic tissue paper is pulled out in the CD direction, and the sanitary tissue paper is V-folded in cross section and is pulled out in a pop-up manner.

It is preferable that the take-out port is provided with a lid portion, the lid portion is surrounded by an opening perforation along the shape of the take-out port, and a push-in piece for opening is provided in the center of the lid portion.

It is preferable that the push-in piece has a semi-elliptical shape, the length of the take-out port in the longitudinal direction is 10 mm or more and 30 mm or less, and the length in the direction orthogonal to the longitudinal direction of the take-out port is 14 mm or more and 30 mm or less. ..

The R of the curved portion of the push piece is preferably 7 mm or more and 15 mm or less.

The opening area of the take-out port formed by cleaving the opening perforation of the lid portion is preferably 2000 mm ² or more and 7000 mm ² or less.

The opening area is preferably 5% or more and 30% or less with respect to the area of the top surface of the storage box.

The value represented by the following formula (5) is preferably 3.0 or more and 5.0 or less.
(Tensile strength in the pull-out direction of sanitary tissue paper (N / 25 mm) x length in the longitudinal direction of the take-out port (mm) / length in the direction orthogonal to the pull-out direction of sanitary tissue paper (mm)) ... (5)

According to the present invention, it is possible to provide a filmless storage box containing hygienic tissue paper, which has good removal property of the hygienic tissue paper and which prevents dust from entering the inside of the storage box.

It is a perspective view which shows one Embodiment of the storage box for hygienic thin paper of this invention. It is a top view of the top surface of the storage box containing sanitary tissue paper with the lid removed. It is a perspective view which shows the state which took out the thin paper from a storage box. It is a top view of the top surface of the storage box in this invention. It is a plan view of sanitary tissue paper. FIG. 5 is a sectional view taken along line YY in FIG.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. The same elements are designated by the same reference numerals throughout the description of the embodiments of the present invention.

[Hygiene tissue paper storage box]
As shown in FIG. 1, the storage box 10 containing sanitary tissue paper of the present invention has the sanitary tissue paper 20 inside the storage box 11 and does not have a film at the take-out port 13. The sanitary tissue paper 20 is pulled out in the direction of the arrow as shown in FIG. In the present specification, the sanitary tissue paper 20 is folded along the folding line 21 of FIG. 5 and stored in the storage box 11 as shown in FIG. Therefore, the pull-out direction of the sanitary tissue paper 20 is the direction of the upward arrow in FIG. 5, and the direction orthogonal to the pull-out direction corresponds to the X direction of the storage box 11.

(Storage box)
The storage box 11 in the hygienic thin paper-containing storage box 10 of the present invention is a rectangular parallelepiped made of paper.
-Storage box size-
As shown in FIG. 1, the height _HC (Z direction in FIG. 1) of the storage box 11 is 35 mm or more and 76 mm or less. The height Hc is preferably 35 mm or more and 64 mm or less, and more preferably 35 mm or more and 58 mm or less.
The length _LC (X direction in FIG. 1) of the storage box 11 in the longitudinal direction is preferably 160 mm or more and 250 mm or less, more preferably 180 mm or more and 240 mm or less, and 200 mm or more and 230 mm or less. Is more preferable.
Further, the length _WC in the direction orthogonal to the longitudinal direction of the storage box 11 (Y direction in FIG. 1, hereinafter, this direction may be referred to as the lateral direction) is preferably 95 mm or more and 125 mm or less. , 100 mm or more and 120 mm or less is more preferable, and 105 mm or more and 115 mm or less is further preferable.
_A preferred combination of longitudinal length LC and lateral length _WC is a longitudinal length _LC of 160 mm or more and 250 mm or less and a lateral length _WC of 95 mm or more and 125 mm or less. be.
By making the storage box 11 a size within the above range, the hygienic thin paper 20 can be taken out easily even in the filmless storage box 11.

-Basis weight-
The basis weight of the storage box 11 is 200 g / m ² or more and 450 g / m ² or less. It is preferably 240 g / m ² or more and 400 g / m ² or less, and more preferably 270 g / m ² or more and 350 g / m ² or less. When the basis weight of the storage box 11 is 200 g / m ² or more, the take-out property of the sanitary thin paper 20 is good, and when it is 450 g / m ² or less, the tearability of the sanitary thin paper 20 is reduced. In addition, the strength of the storage box 11 can be maintained to prevent the storage box 11 from being crushed, and the box-making property of the storage box 11 is also maintained satisfactorily.
In addition, the box-making property means the ease of opening the box when the storage box 11 is transformed into a square columnar cylinder from the state of being folded in half, and the laminated body of the sanitary thin leaf paper 20 is stored in the storage box 11 after the box is opened ( When filling), it means the ease of sealing the opening when folding the short side flap and the height side flap.
The basis weight of the storage box 11 is a value measured based on JIS P 8124.

(Outlet)
As shown in FIG. 2, the take-out port 13 of the present embodiment has a substantially elliptical central portion 14 and longitudinal openings extending on both sides thereof, and both ends 15 are provided in the longitudinal openings thereof. The take-out port 13 is formed by cleaving the opening perforation 12 (see FIG. 4), which will be described later.

Here, the "central portion" in the longitudinal direction of the take-out port 13 indicates a region of 45% or more and 55% or less of the length in the longitudinal direction including the center in the longitudinal direction.
Further, the "both ends" in the longitudinal direction of the take-out port 13 indicate a region of 0% or more and 15% or less from the end 15a of the longitudinal opening, respectively.

The shape of the central portion 14 can be various shapes such as a substantially circular shape, a substantially elliptical shape, and a substantially elliptical shape, but in consideration of ease of removal, it is preferably a substantially circular shape or a substantially elliptical shape.
As shown in FIG. 2, the longitudinal openings other than the central portion 14 are preferably shaped to extend in the longitudinal direction of the storage box 11, and both ends are preferably R-shaped. As shown in FIG. 2, the longitudinal opening may be provided with a constant width in the longitudinal direction, or may be provided so as to gradually increase toward the central portion 14.

In the storage box 10 containing sanitary thin leaf paper of the present invention, the length W ₁₄ in the direction orthogonal to the longitudinal direction (Y direction) at the central portion 14 in the longitudinal direction of the outlet 13 is at both ends 15 in the longitudinal direction of the outlet 13. Greater than length _W15 in the direction orthogonal to the longitudinal direction. Since the length W ₁₄ of the central portion 14 is larger than the length W ₁₅ of both end portions 15, the first set is easy to pick up in the central portion 14, and the sanitary thin paper 20 is used without dropping back from the second set onward. It has the advantage of being easy to support.

The length W ₁₄ in the direction orthogonal to the longitudinal direction at the central portion 14 in the longitudinal direction of the take-out port 13 is 30 mm or more and 65 mm or less. The length W ₁₄ is preferably 35 mm or more and 60 mm or less, and more preferably 40 mm or more and 55 mm or less. When the length W ₁₄ in the direction orthogonal to the longitudinal direction in the central portion 14 is 30 mm or more, it is easy to pick the first set of sanitary tissue paper 20, and when it is 65 mm or less, it is possible to prevent the intrusion of dust. can.
Note that W ₁₄ indicates the maximum region value in the central portion 14.

The length W ₁₅ in the direction orthogonal to the longitudinal direction at both end portions 15 in the longitudinal direction of the take-out port 13 is 8 mm or more and 40 mm or less. The length W ₁₅ is preferably 10 mm or more and 30 mm or less, and more preferably 12 mm or more and 20 mm or less. When the length W ₁₅ in the direction orthogonal to the longitudinal direction at both ends 15 is 8 mm or more, the sanitary tissue paper 20 can be easily pulled out, and when it is 40 mm or less, the dropback of the sanitary tissue paper 20 can be prevented. ..
Note that W ₁₅ indicates the maximum region value at both ends 15.

The length L ₁₃ in the longitudinal direction (X direction) of the take-out port 13 is preferably 135 mm or more and 220 mm or less, more preferably 155 mm or more and 215 mm or less, and further preferably 165 mm or more and 210 mm or less. Since the length L ₁₃ in the longitudinal direction of the take-out port 13 is 135 mm or more, it is easy to pull out the sanitary tissue paper 20, and when it is 220 mm or less, dropback can be prevented.

The opening area of the take-out port 13 is preferably 2000 mm ² or more and 7000 mm ² or less, more preferably 3000 mm ² or more and 6000 mm ² or less, and further preferably 3500 mm ² or more and 5000 mm ² or less. When the opening area of the take-out port 13 is 2000 mm ² or more, it is easy to take out the sanitary tissue paper 20, and when it is 7000 mm ² or less, it is difficult for dust to enter.
The opening area can be measured as follows. First, as shown in FIG. 4, the mass and area of only the top surface 11a of the storage box 10 with the lid portion 16 attached are measured. Next, after removing the lid portion 16 with the opening perforation 12, the mass of only the lid portion 16 is measured. The opening area is calculated from the two mass ratios.
The opening area of the take-out port 13 is preferably 5% or more and 30% or less, more preferably 10% or more and 25% or less, and 15% or more and 20% with respect to the area of the top surface 11a of the storage box 11. The following is more preferable.

The ratio of the length L ₁₃ (see FIG. 2) in the longitudinal direction of the take-out port 13 to the length (L ₂₀ , see FIG. 1) in the direction orthogonal to the drawing direction of the sanitary tissue paper 20 is expressed by the following formula (1). , 60% or more and 103% or less, more preferably 70% or more and 99% or less, and further preferably 80% or more and 94% or less.
Length in the longitudinal direction of the take-out port (mm) / Length in the direction orthogonal to the withdrawal direction of sanitary tissue paper (mm) x 100 ... (1)
When the ratio obtained by the above formula (1) is 60% or more, the sanitary tissue paper 20 can be taken out without tearing, and when it is 103% or less, the dropback of the sanitary tissue paper 20 can be prevented. can.

-Cover-
As shown in FIG. 4, the storage box 10 containing sanitary tissue paper of the present invention preferably has a lid portion 16 provided at the take-out port 13, and the lid portion 16 is a sewing machine for opening that follows the shape of the take-out port 13. It is preferably surrounded by eyes 12. The opening perforation does not have to be partially surrounded by the lid portion 16, but is preferably entirely surrounded.

Further, it is preferable to have a push-in piece 17 for opening at the center of the lid portion 16. The shape of the push piece 17 at the center can be various, but a substantially semicircular shape or a substantially semi-elliptical shape is preferable, and a substantially semi-elliptical shape is more preferable.
The length L ₁₇ in the longitudinal direction of the push piece 17 is preferably 10 mm or more and 30 mm or less, more preferably 10 mm or more and 22 mm or less, and further preferably 10 mm or more and 16 mm or less. When the length L ₁₇ in the longitudinal direction of the push piece 17 is 10 mm or more, when the push piece 17 is pushed, the upper part of the laminated body is pushed and a space is appropriately vacated, so that the first set is picked. It becomes easy to pick up. When the thickness is 30 mm or less, the push-in piece 17 can be easily pushed, the lid portion 16 can be opened neatly, and the sanitary tissue paper 20 can be easily taken out.

The length W ₁₇ in the direction orthogonal to the longitudinal direction of the push piece 17 is preferably 14 mm or more and 30 mm or less, more preferably 16 mm or more and 26 mm or less, and further preferably 18 mm or more and 22 mm or less. When the length W ₁₇ in the direction orthogonal to the longitudinal direction is 14 mm or more, the pushing piece 17 can be easily pushed. When the thickness is 30 mm or less, the push-in piece 17 can be easily pushed, the lid portion 16 can be opened neatly, and the sanitary tissue paper 20 can be easily taken out.

It is preferable that the push piece 17 is provided with a bending line 19 at a portion corresponding to a substantially semi-elliptical diameter, and a semicircular arc portion is composed of an opening perforation 18. When the opening perforation 18 is torn and the pushing piece 17 is pushed in, the pushing piece 17 is folded into the inside of the storage box 11 by the bending line 19 to form a hole. The lid portion 16 can be removed by putting a finger on the hole and pulling up the lid portion 16 while dividing the lid portion 16 from the center portion to the left and right to open the opening perforation 12.
Here, the "center portion of the lid portion 16" is the push-in piece 17 so that the bending line 19 provided on the push-in piece 17 is bisected in the central portion 14 of the take-out port 13 in the longitudinal direction. Indicates the position where is formed.

The R of the curved portion of the push piece 17 is preferably 7 mm or more and 15 mm or less, more preferably 8 mm or more and 13 mm or less, and further preferably 9 mm or more and 11 mm or less.

(Hygiene tissue paper)
Details of the sanitary tissue paper 20 in the present invention will be described below.

-Number of pairs-
The number of sets of the sanitary thin paper 20 stored in the storage box 10 containing the sanitary thin paper of the present invention is 60 or more and 160 or less. The number of pairs is more preferably 70 or more and 140 or less, and further preferably 80 or more and 120 or less. The hygienic tissue paper 20 may be 1 to 3 plies per set, preferably 2 plies.

-Paper thickness-
The paper thickness of the sanitary tissue paper 20 is preferably 43 μm or more and 100 μm or less, more preferably 48 μm or more and 85 μm or less, and further preferably 53 μm or more and 70 μm or less per ply. Further, it is preferable that one set of the sanitary tissue paper 20 has two plies.

The paper thickness is a value measured by the following method.
The device uses a thickness gauge (dial thickness gauge "PEACOCK" manufactured by Ozaki Seisakusho). The measurement conditions are a measuring load of 250 gf, a stylus diameter of 30 mm, a sample is placed between the stylus and the measuring table, and the gauge when the stylus is lowered at a speed of 1 mm or less per second is read. One measurement is performed by stacking 10 1-ply sheets (5 sets of 2-ply sheets), repeating the measurement 10 times, averaging the measurement results, and then setting the value to 1/10 and per ply. To the value of.

The ratio of the height Hc of the storage box 11 to the length W ₂₀ (see FIG. 5) of the sanitary tissue paper 20 in the drawer direction represented by the following formula (2) is preferably 10% or more and 40% or less. It is more preferably 14% or more and 34% or less, and further preferably 18% or more and 28% or less.
Height of storage box (mm) / Length of hygienic tissue paper in the drawer direction (mm) x 100 ... (2)
When the ratio of the height Hc of the storage box 11 to the length W ₂₀ in the drawer direction of the sanitary tissue paper 20 is 10% or more, the drawer property of the sanitary tissue paper 20 is improved, and when it is 40% or less, it is hygienic. It is possible to prevent the thin paper 20 from dropping back.

The ratio of the height Hc of the storage box 11 to the number of sets of sanitary tissue paper 20 represented by the following formula (3) is preferably 28 or more and 76 or less, more preferably 32 or more and 64 or less, and 36. It is more preferably 56 or less.
(Height of storage box (mm) / Number of sets of hygienic tissue paper) x 100 ... (3)
When the ratio of the height Hc of the storage box 11 to the number of sets of the sanitary tissue paper 20 is 28 or more, the pullability of the sanitary tissue paper 20 is improved, and when it is 76 or less, the upper space is appropriately vacated. The stitches are easier to pick.

Further, in relation to the storage box 11, the hygienic tissue paper 20 preferably has a value represented by the following formula (4) of 7 or more and 20 or less, more preferably 9 or more and 18 or less, and 11 or more. It is more preferably 16 or less.
(Number of sets of sanitary tissue paper x thickness of sanitary tissue paper (μm) / 1000 / height of storage box (mm)) x 100 ... (4)
The thickness of the sanitary tissue paper indicates the thickness per ply.
When the value obtained by the above formula (4) is 7 or more, the upper space is appropriately vacant, so that the first set of the sanitary tissue paper 20 can be easily picked up, and when it is 20 or less, the sanitary tissue paper 20 is easily picked up. The pressure of 20 from the top surface 11a of the storage box 11 is small, and the sanitary tissue paper 20 can be smoothly taken out without tearing.

-Basis weight-
The basis weight per sheet ply in the sanitary thin leaf paper 20 is preferably 14 g / m ² or more and 22 g / m ² or less, more preferably 15 g / m ² or more and 20 g / m ² or less, and 16 g / m. It is more preferably ² or more and 18 g / m ² or less. The basis weight is a value measured based on JIS P 8124.

By setting the paper thickness of the sanitary tissue paper 20 and the basis weight per sheet ply within the above ranges, the sanitary tissue paper 20 is not easily torn and easily taken out when it is taken out from the storage box 11. Further, the softness, the voluminous feeling, and the compactness of the storage box 11 can be compatible with each other. A chemical solution may be applied to the sanitary tissue paper 20, and when applied, it means the basis weight and the paper thickness in the applied state. It is preferable that the sanitary tissue paper of the present application is not coated with a chemical solution.

The sanitary tissue paper 20 stored in the storage box 11 is a 2-ply hand towel, and it is preferable that the hygienic tissue paper 20 is pulled out in the CD (Cross Direction) direction. The sanitary tissue paper 20 is preferably processed with a multi-stand type interfolder. When processed with a multi-stand type interfolder, the drawer direction becomes the CD direction.
Further, as shown in FIG. 6, the sanitary tissue paper 20 in the storage box 11 has a V-shaped cross section when viewed from the short side of the storage box 11, and is preferably taken out in a pop-up manner.

-Length of hygienic tissue paper in the drawer direction W _20-
The length W ₂₀ (see FIG. 5) of the sanitary tissue paper 20 in the drawing direction is preferably 150 mm or more and 240 mm or less, more preferably 170 mm or more and 230 mm or less, and further preferably 190 mm or more and 210 mm or less.

-Length in the direction orthogonal to the drawing direction of sanitary tissue paper L _20-
The length L ₂₀ (see FIGS. 1 and 5) in the direction orthogonal to the drawing direction (X direction) of the sanitary tissue paper 20 is preferably 160 mm or more and 260 mm or less, and more preferably 180 mm or more and 240 mm or less. It is more preferably 200 mm or more and 220 mm or less.

By setting the lengths L ₂₀ and W ₂₀ of the sanitary tissue paper 20 to the above range, the laminate of the sanitary tissue paper 20 of the present invention is inserted into the storage box 11 having a height _Hc without the film of the present invention. The obtained hygienic tissue paper-containing storage box has good pullability.

-Strength in the direction orthogonal to the withdrawal direction (DMDT)-
The sanitary tissue paper 20 in the present invention has a vertical tensile strength (2-ply, measured at a tensile speed of 300 mm / min) DMDT (Dry Machine Direction Tensile strength) of 6 N / 25 mm or more and 28 N / min based on JIS P 8113. It is preferably 25 mm or less, more preferably 9 N / 25 mm or more and 25 N / 25 mm or less, and further preferably 12 N / 25 mm or more and 22 N / 25 mm or less. By setting the DMDT in the above range, when the sanitary tissue paper 20 is taken out from the storage box 11, it is hard to tear and is easy to take out, and the ease of use is improved. In addition, it is less likely to be torn in the MD (Machine Direction) direction during production.

-Strength in the drawer direction (DCDT)-
The drawing direction of the sanitary tissue paper 20 of the present invention is the CD direction, and the lateral tensile strength (measured at 2-ply, tensile speed 300 mm / min) at the time of drying based on JIS P 8113 is DCDT (Dry Cross Direction Tensile strength). It is preferably 3.3 N / 25 mm or more and 6.3 N / 25 mm or less, more preferably 3.8 N / 25 mm or more and 5.8 N / 25 mm or less, and 4.3 N / 25 mm or more and 5.3 N / 25 mm or less. Is more preferable. By setting the DCDT in the above range, the sanitary tissue paper 20 is less likely to be torn at the time of withdrawal and is easily taken out, so that the ease of use is improved.

In relation to the tensile strength (DCDT) of the sanitary tissue paper 20 in the pull-out direction, the length L ₁₃ in the longitudinal direction of the take-out port 13, and the length L ₂₀ in the direction orthogonal to the pull-out direction (X direction) of the sanitary tissue paper 20, the following The value represented by the formula (5) is preferably 3.0 or more and 5.0 or less, more preferably 3.4 or more and 4.8 or less, and 4.0 or more and 4.5 or less. Is even more preferable.
(Tensile strength in the pull-out direction of sanitary tissue paper (N / 25 mm) x length in the longitudinal direction of the take-out port (mm) / length in the direction orthogonal to the pull-out direction of sanitary tissue paper (mm)) ... (5)
When the value represented by the above formula (5) is 3.0 or more, the sanitary tissue paper 20 is less likely to be torn, and when it is 5.0 or less, the sanitary tissue paper 20 is less likely to drop back.

-material-
The 2-ply sheet constituting the sanitary tissue paper 20 is mainly composed of pulp, and preferably contains 50% by mass or more of pulp, more preferably 70% by mass or more of pulp, and 90% by mass. It is more preferable to contain pulp in an amount of% by mass or more. Examples of the pulp that can be used for producing the thin leaf paper 20 include wood pulp, used paper pulp, and non-wood pulp. The sanitary thin leaf paper 20 in the present invention may be made of 100% wood pulp as the pulp, and the wood pulp may be used. In addition, it may contain used paper pulp and non-wood pulp. Examples of components other than pulp include fillers, synthetic fibers, natural fibers and the like. In order to obtain the target quality, wood pulp consisting of 10% by mass or more and 50% by mass or less of coniferous bleached kraft pulp (NBKP) and 50% by mass or more and 90% by mass or less of broadleaf bleached kraft pulp (LBKP) is used as a raw material. It is more preferable to use wood pulp having NBKP: 15% by mass or more and 45% by mass or less and LBKP: 55% by mass or more and 85% by mass or less as a raw material, and NBKP: 20% by mass or more and 40% by mass or less. It is more preferable to use wood pulp having the following and LBKP: 60% by mass or more and 80% by mass or less as a raw material.

As the grade of LBKP, pulp produced from the genus Eucalyptus of the family Myrtaceae, represented by the genus Eucalyptus Grandis and the genus Eucalyptus, is preferable. Further, waste paper pulp may be contained in addition to the wood pulp having the above-mentioned pulp ratio, and the blending amount thereof is preferably 200 parts by mass or less with respect to 100 parts by mass of the wood pulp having the above-mentioned pulp ratio, and 150 parts by mass. It is more preferably parts or less, and even more preferably 100 parts by mass or less. The used paper pulp is preferably derived from a paper liquid beverage container such as milk.

In addition, in order to secure appropriate strength in the sanitary tissue paper 20, the strength can be adjusted by beating the pulp fiber after blending the raw materials by ordinary means. As the beating process for obtaining the target quality, it is preferable that the freeness (csf) of the seed box raw material is 200 ml or more and 650 ml or less, preferably 250 ml or more and 600 ml or less, and more preferably 300 ml or more and 550 ml or less. A dry paper strength enhancer may be used, and it is preferable to use a wet paper strength enhancer.
By adjusting the above-mentioned pulp composition and freeness, a sanitary thin paper that is easy to pull out and has appropriate strength can be obtained in a carton that does not have a film as in the present application.

[Examples and Comparative Examples]
Using the filmless storage boxes shown in Tables 1 to 3 and sanitary tissue paper (without hand towels and chemicals), a storage box containing hygienic tissue paper having a lid having the shape shown in FIG. 4 was manufactured. The sanitary tissue paper was processed with a multi-stand type interfolder so that the drawer direction was the CD direction. The hand towels are a set of two plies and are stored in a storage box in a pop-up manner as shown in FIG.

[evaluation]
The following items were sensory evaluated for the storage boxes containing hygienic tissue paper of Examples and Comparative Examples.
(Easy to pick the first set of hygienic tissue paper)
Based on the evaluation of 30 monitors, the ease of picking the first set of hand towels was evaluated according to the following evaluation criteria.
5: The number of people who felt that the first group was difficult to pick up (difficult to take out) was 0 to 1 person 4: The number of people who felt that the first group was difficult to pick up (difficult to take out) was 2 to 3 people 3: The number of people who felt that the first group was difficult to pick up (difficult to take out) was 4 to 6 people 2: The number of people who felt that the first group was difficult to pick up (difficult to take out) was 7 to 20 people 1: First 21 to 30 people felt that the first group was difficult to pick up (difficult to take out)

(Easy to pull out the second and subsequent sets of hygienic tissue paper)
Thirty monitors evaluated the ease of pulling out the second and subsequent sets of hand towels according to the following evaluation criteria, and the average of the evaluation values was calculated. In addition, the average value was rounded off to make one significant figure.
5: The hygienic tissue paper did not tear even after using it to the end. Or, I didn't feel it was difficult to pull it out. 4: When I used it to the end, it broke once or twice per storage box. Or, I didn't feel it was difficult to pull it out. 3: When I used it to the end, it broke 3 to 5 times per storage box. Or, I felt it was difficult to pull it out, but there was no problem. 2: When I used it to the end, it broke 6 to 10 times per storage box. Or, I felt it was difficult to pull it out 1: When I used it to the end, it was torn 11 times or more per storage box. Or, it was noticeably difficult to pull out.

(Drop back)
Thirty monitors performed a drawer operation for one storage box up to the last set, evaluated it according to the following evaluation criteria, and calculated the average of the evaluation values. In addition, the average value was rounded off to make one significant figure.
5: No dropback occurred 4: Dropback occurred once 3: Dropback occurred 2-3 times 2: Dropback occurred 4-6 times 1: Dropback 7 Happened more than once

(Difficulty in entering garbage)
Based on the evaluations of 30 monitors, the difficulty of getting dust into the storage box when using hand towels was evaluated according to the following evaluation criteria.
Good: 0 to 3 people feel that it is easy to get trash Yes: 4 to 6 people feel that it is easy to get trash No: 7 to 30 people feel that it is easy to get trash

As shown in Table 1, the storage box containing sanitary tissue paper of the present invention is easy to pick up the first set of sanitary tissue paper, easy to pull out the second and subsequent sets, difficulty in dropback, and difficulty in entering dust. Good results could be obtained in the evaluation of.

10 Storage box with sanitary thin leaf paper 11 Storage box 11a Top surface 12 (of the lid) Opening perforation 13 Extraction port 14 Longitudinal center part of the outlet port 15 Longitudinal both ends of the outlet port 15a End 16 Lid part 17 Push-in Piece 18 (Pushing piece) Opening perforation 19 Folding line 20 Sanitary thin leaf paper 21 Folding line HC Storage box height X Longitudinal direction Y Longitudinal direction _{L 13} Longitudinal length of take-out port W ₁₄ Ejection Length in the direction orthogonal to the longitudinal direction at the center of the longitudinal direction of the mouth W ₁₅ Length in the direction orthogonal to the longitudinal direction at both ends in the longitudinal direction of the outlet L ₁₇ Length in the longitudinal direction of the push piece W ₁₇ Push-in Length in the direction orthogonal to the longitudinal direction of the piece W ₂₀ Length in the pull-out direction of the sanitary thin leaf paper L ₂₀ Length in the direction orthogonal to the pull-out direction of the sanitary thin leaf paper

Claims (12)

A storage box containing hygienic tissue paper that has sanitary tissue paper inside the storage box and does not have a film at the outlet of the storage box.
The number of sets of the sanitary tissue paper is 60 or more and 160 or less.
The basis weight of the storage box is 200 g / m ² or more and 450 g / m ² or less, and the height of the storage box is 35 mm or more and 76 mm or less.
The length in the direction orthogonal to the longitudinal direction in the central portion in the longitudinal direction of the take-out port is 30 mm or more and 65 mm or less.
The length of the take-out port at both ends in the longitudinal direction in the direction orthogonal to the longitudinal direction is 8 mm or more and 40 mm or less.
The length in the direction orthogonal to the longitudinal direction at the central portion of the outlet in the longitudinal direction is larger than the length in the direction orthogonal to the longitudinal direction at both ends of the outlet in the longitudinal direction.
A storage box containing hygienic tissue paper whose value represented by the following formula (1) is 60% or more and 103% or less.
Length in the longitudinal direction of the take-out port (mm) / Length in the direction orthogonal to the withdrawal direction of the sanitary tissue paper (mm) × 100 ... (1) The storage box containing sanitary tissue paper according to claim 1, wherein the length of the sanitary tissue paper in the drawing direction is 150 mm or more and 240 mm or less, and the length in the direction orthogonal to the drawing direction of the sanitary tissue paper is 160 mm or more and 260 mm or less. The storage box containing hygienic tissue paper according to claim 1 or 2, wherein the value represented by the following formula (2) is 10% or more and 40% or less.
Height of the storage box (mm) / Length of the sanitary tissue paper in the drawer direction (mm) × 100 ... (2) The storage box containing hygienic tissue paper according to any one of claims 1 to 3, wherein the value represented by the following formula (3) is 28 or more and 76 or less.
(Height of the storage box (mm) / Number of sets of sanitary tissue paper) × 100 ... (3) The storage box containing hygienic tissue paper according to any one of claims 1 to 4, wherein the value represented by the following formula (4) is 7 or more and 20 or less.
(Number of sets of sanitary tissue paper x paper thickness of the sanitary tissue paper (μm) / 1000 / height of the storage box (mm)) x 100 ... (4) From claim 1, the sanitary tissue paper is a two-ply hand towel, the drawing direction of the sanitary tissue paper is the CD direction, the sanitary tissue paper is V-folded in cross section, and is pulled out in a pop-up manner. 5 A storage box containing hygienic tissue paper according to any one of the items. A claim in which a lid portion is provided at the take-out port, the lid portion is surrounded by an opening perforation along the shape of the take-out port, and an opening push-in piece is provided at the center of the lid portion. A storage box containing hygienic tissue paper according to any one of 1 to 6. The push-in piece has a semi-elliptical shape, the length of the take-out port in the longitudinal direction is 10 mm or more and 30 mm or less, and the length in the direction orthogonal to the longitudinal direction of the take-out port is 14 mm or more and 30 mm or less. A storage box containing hygienic tissue paper according to claim 7. The storage box containing sanitary tissue paper according to claim 7 or 8, wherein the R of the curved portion of the push-in piece is 7 mm or more and 15 mm or less. The storage box containing sanitary tissue paper according to any one of claims 7 to 9, wherein the opening area of the take-out port formed by opening the opening perforation of the lid portion is 2000 mm ² or more and 7000 mm ² or less. The storage box containing sanitary tissue paper according to claim 10, wherein the opening area is 5% or more and 30% or less with respect to the area of the top surface of the storage box. The storage box containing sanitary tissue paper according to any one of claims 1 to 11, wherein the value represented by the following formula (5) is 3.0 or more and 5.0 or less.
(Tensile strength in the pull-out direction of the sanitary tissue paper (N / 25 mm) × length in the longitudinal direction of the take-out port (mm) / length in the direction orthogonal to the pull-out direction of the sanitary tissue paper (mm)) ... 5)

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