Toilet roll package

Abstract

To suppress deformation of a toilet roll, while tightly packing the toilet roll and maintaining water absorption property and softness of a sheet.SOLUTION: There is provided a toilet roll package 10 in which two or more and five or less packages 20 are aligned and are packed by a first exterior film 30, softness of the roll is 2.5 mm or more and 5.0 mm or less, roll density is 0.55 m / cm2 or more and 0.85 m / cm2 or less, a roll diameter is 118 mm or more and 140 mm or less, paper thickness is 1.1 mm / 10 ply or more and 1.9 mm / 10 ply or less, an HF value is 85 or more and 100 or less, water absorption speed is 3 sec / 0.1 ml or less, a surplus film length is 5 mm or more and 25 mm or less, a value represented by (surplus film length) / (roll softness) is 1 or more and 8 or less, a value represented by (surplus film length) / (roll density) is 14 or more and 40 or less, a head from the upper face of a table is 10 mm or more and 50 mm or less, and a weight is 2 kg or more and 8 kg or less.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a toilet roll wrapper package. [Background technology]

[0002] There is a toilet roll package in which a plurality of toilet rolls are packaged together in an exterior film.

[0003] For example, Patent Document 1 discloses a toilet roll package in which toilet rolls are arranged in two rows with their circumferential surfaces butted together between the upper and lower fused parts of the gusset package. In this package, there are two rows of toilet rolls extending from the upper fused part to the lower fused part, and the end faces of the toilet rolls are arranged to face the front and back of the package. It is disclosed that the preferred number of toilet rolls packaged in this package is 8 rolls in total (4 rolls x 2 rows), 10 rolls in total (5 rolls x 2 rows), or 12 rolls in total (6 rolls x 2 rows).

[0004] Patent Document 2 also discloses a toilet roll package in which a film is folded and sealed on both end face sides of a toilet roll. The toilet rolls are arranged so that their outer faces are adjacent to each other with their axes parallel, and both end faces (upper and lower faces) are substantially aligned on the same plane. It is described that the number of toilet rolls packed in the toilet roll package is preferably 4 to 6 rolls (2 to 3 rolls per row), more preferably 4 rolls (2 rolls per row). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2019-116302 A [Patent Document 2] JP 2018-114988 A Summary of the Invention [Problem to be solved by the invention]

[0006] In general, it is preferable for the film packaging in a toilet roll package to be tightly wrapped around the toilet roll inside, both in terms of maintaining the quality of the toilet roll inside and in terms of the aesthetic appeal of the packaging.

[0007] Although it is possible to obtain a tight toilet roll package by wrapping six rolls of a highly absorbent, soft toilet roll that places importance on quality in a film, if a plurality of such toilet roll packages are bundled together and then wrapped in a film from the outside to form a toilet roll package, the toilet roll packages tend to move around inside the package, making it difficult to maintain the tightness of the toilet roll package. Furthermore, if the toilet roll packages move inside the package, the toilet roll packages may come into contact with each other, or the toilet rolls may come into contact with each other, causing the toilet roll to deform. On the other hand, in order to ensure the tightness of the toilet roll package, it is necessary to wrap it tightly, so there is a risk that the toilet rolls inside may be crushed and deformed, making it impossible to maintain quality.

[0008] Therefore, an object of the present disclosure is to provide a toilet roll package that can be tightly packaged even when packaging two to five six-roll toilet roll packages together in film, and that can prevent deformation of the toilet roll while maintaining water absorbency and sheet softness. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems, a first aspect of the present invention is a toilet roll package in which a plurality of toilet roll packages each containing 6 rolls are packaged in a first exterior film, the toilet roll package being a package in which toilet rolls, each of which is made of 2-ply or more double-embossed toilet paper wound into a roll, are arranged in three rows in the width direction, with two rolls arranged in the axial direction as one row, and packaged in a second exterior film, the toilet roll packages being arranged in a thickness direction of 2 to 5 rolls and packaged in the first exterior film, the roll softness of the toilet rolls being 2.5 mm or more and 5.0 mm or less, and the winding density of the toilet rolls being 0.55 m / cm 2 More than 0.85m / cm 2 The toilet roll has a roll diameter of 118 mm or more and 140 mm or less, the toilet paper has a paper thickness of 1.1 mm / 10 ply or more and 1.9 mm / 10 ply or less, the HF value of the product ply of the toilet paper according to the TSA is 85 or more and 100 or less, and the toilet paper meets the old JIS S the water absorption speed of the product PLY measured in accordance with 3104 is 3 seconds / 0.1 ml or less, an excess film length, which is the length in the axial direction of the excess film of the first exterior film when the excess film of the toilet roll package is pinched, is 5 mm or more and 25 mm or less, a value represented by the formula: (the excess film length) / (roll softness of the toilet roll) is 1 or more and 8 or less, a value represented by the formula: (the excess film length) / (winding density of the toilet roll) is 14 or more and 40 or less, the toilet roll package is placed on a stand and the toilet roll package located at the endmost end in the thickness direction among the plurality of toilet roll packages is dropped outside the edge of the stand, the drop from the upper surface of the stand is 10 mm or more and 50 mm or less, and the weight of the toilet roll package is 2 kg or more and 8 kg or less.

[0010] A second aspect of the present invention is the toilet roll wrapping package of the first aspect, wherein the basis weight of the toilet paper product ply is 30 g / m2 More than 50g / m 2 The following is the result.

[0011] A third aspect of the present invention is the toilet roll wrapping package of the first aspect or the second aspect, wherein the specific volume of the toilet paper is 6 cm 3 / g or more 9cm 3 / g or less.

[0012] A fourth aspect of the present invention is the toilet roll wrapping package of the first aspect or the second aspect, wherein the roll length of the toilet roll is 34 m or more and 57 m or less.

[0013] A fifth aspect of the present invention is the toilet roll wrapping package of the first aspect or the second aspect, wherein the roll mass per 114 mm width of the toilet roll is 155 g or more and 275 g or less.

[0014] A sixth aspect of the present invention is the toilet roll wrapping package of the first aspect or the second aspect, wherein the roll density of the toilet roll is 0.08 g / cm 3 More than 0.18g / cm 3 The following is the result.

[0015] A seventh aspect of the present invention is a toilet roll packaging package according to the first aspect or the second aspect, wherein the toilet paper product ply has a tensile strength in the MD direction when dry (DMDT) based on JIS P 8113 of 2.0 N / 25 mm or more and 5.5 N / 25 mm or less.

[0016] An eighth aspect of the present invention is a toilet roll packaging package according to the first aspect or the second aspect, wherein the toilet paper product PLY has a tensile strength in the CD direction when dry based on JIS P 8113 (DCDT) of 0.6 N / 25 mm or more and 1.6 N / 25 mm or less.

[0017] A ninth aspect of the present invention is the toilet roll packaging package of the first aspect or the second aspect, wherein the plurality of toilet roll packaging bodies are packaged in the first exterior film in a pillow package. Effect of the Invention

[0018] According to the present disclosure, it is possible to provide a toilet roll package that can tightly package even when packaging two to five six-roll toilet roll packages together in film, and that can prevent deformation of the toilet roll while maintaining water absorbency and sheet softness. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view of a toilet roll wrapper package according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view of the toilet roll packaging. [Diagram 3] FIG. [Figure 4] FIG. 1 is a diagram showing a method for measuring an excess film length. [Diagram 5] FIG. 13 is a diagram showing measurement positions of excess film length. [Figure 6] FIG. 13 is a diagram showing a method for measuring a drop from the top surface of a table. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] An embodiment of the present invention will be described in detail below, but the following embodiment is presented for illustrative purposes, and the present invention is not limited to the embodiment shown below. The axial direction means the axial direction of the toilet roll, which is the X direction in the figure. The width direction means the direction perpendicular to the axial direction, which is the direction in which the rows of toilet rolls are lined up, which is the Y direction in the figure. The thickness direction means the thickness direction of the toilet roll packaging, which is the direction perpendicular to both the axial direction and the width direction, which is the Z direction in the figure.

[0021] Fig. 1 is a perspective view of a toilet roll wrapping package according to one embodiment of the present invention. Fig. 2 is a perspective view of the toilet roll wrapping. Fig. 3 is a perspective view of a toilet roll. Fig. 4 is a diagram showing a method for measuring the length of excess film. Fig. 5 is a diagram showing a position for measuring the length of excess film. Fig. 6 is a diagram showing a method for measuring the drop from the upper surface of a table.

[0022] <Toilet roll packaging> As shown in Fig. 1, the toilet roll packaging package 10 according to this embodiment is produced by packaging a plurality of toilet roll packages 20 (five in Fig. 1), each containing six rolls, together in a first exterior film 30. The toilet roll packaging 20 is produced by packaging six rolls of toilet rolls 40 together in a second exterior film 50. The plurality of toilet roll packages 20 are lined up in the thickness direction and packaged in the first exterior film 30.

[0023] In the toilet roll package 10 according to this embodiment, as described below, the number of toilet roll packages 20 to be packaged, the roll softness, winding density, and winding diameter of the toilet roll 40, the paper thickness of the toilet paper 40a (see FIG. 3), the HF value by TSA, the water absorption speed, the length of the excess film 30a (see FIG. 4) of the first exterior film 30, the relationship between the excess film length Lf and the roll softness, the relationship between the excess film length Lf and the winding density, the drop of the toilet roll package 10 from the upper surface of the stand, and the weight of the toilet roll package 10 are appropriately set. As a result, according to this embodiment, even when 2 to 5 toilet roll packages 20 each containing 6 rolls are packaged together in film, a toilet roll package 10 can be provided that can tightly package the toilet roll 40 and suppress deformation of the toilet roll 40 while maintaining water absorption and sheet softness.

[0024] The details of each component are as follows:

[0025] (Number of toilet roll packages) In the toilet roll packaging package 10, two to five toilet roll packages 20 are arranged in the thickness direction (Z direction) and packaged in the first exterior film 30. By setting the number of toilet roll packages 20 to be packaged within the above range, even when six rolls of toilet roll packages 20 are packaged in the first exterior film 30, they will not deform and can maintain their tightness, water absorbency, and sheet softness. The number of toilet roll packages 20 is more preferably four to five, and even more preferably five. Note that, although FIG. 1 illustrates a state in which five toilet roll packages 20 (five bags) are arranged in the thickness direction and packaged, the present invention is not limited to this. For example, as shown in FIG. 5(b), four toilet roll packages 20 (four bags) may be packaged lined up in the thickness direction, as shown in FIG. 5(c), three toilet roll packages 20 (three bags) may be packaged lined up in the thickness direction, or as shown in FIG. 5(d), two toilet roll packages 20 (two bags) may be packaged lined up in the thickness direction.

[0026] (Pack Weight) The weight of the toilet roll packaging package 10 (hereinafter sometimes referred to as "pack weight") is 2 kg or more and 8 kg or less. If the pack weight is lighter than 2 kg, the toilet roll 40 will be easily crushed and deformed. On the other hand, if the pack weight is heavier than 8 kg, the tightness will be poor. The lower limit of the above range of pack weight is more preferably 4 kg or more, and even more preferably 5 kg or more. The upper limit of the above range of pack weight is more preferably 7.5 kg or less, and even more preferably 7 kg or less.

[0027] <First exterior film> As shown in Fig. 1, the first exterior film 30 is a resin film that packages multiple toilet roll packages 20. The first exterior film 30 covers, from all directions, the multiple toilet roll packages 20 that are arranged side by side in the thickness direction.

[0028] Examples of the resin film used for the first exterior film 30 include LDPE (low density polyethylene), LLDPE (linear low density polyethylene), HDPE (high density polyethylene), CPP (unoriented polypropylene), or a film obtained by blending or mixing these materials. In addition, the film may be a film obtained by laminating, coating, or multi-layering a different material on these films. Examples of the different materials include OPP (oriented polypropylene), EVOH (ethylene vinyl alcohol copolymer), Ny (nylon), PET (polyethylene terephthalate), PVDC (polyvinylidene chloride), and the like. Among these, the resin film used for the first exterior film 30 is preferably LLDPE, LDPE, or a mixture of these, and most preferably LDPE. By using LLDPE, LDPE, or a mixture of these as the resin film used for the first exterior film 30, even when packaging 6 rolls of toilet roll packaging body 20, the toilet roll 40 can be packaged tightly and in a manner that makes it difficult for the toilet roll 40 to deform.

[0029] The plurality of toilet roll packages 20 are preferably packaged in the first exterior film 30 in a pillow packaging manner.

[0030] Pillow packaging is well known. For example, in a state where a plurality of toilet roll packages 20 are arranged on or under a sheet-like first exterior film 30, the first exterior film 30 is wound into a cylindrical shape so as to wrap the plurality of toilet roll packages 20, and the inner faces of both ends of the first exterior film 30 are overlapped and bonded (heat sealed or the like) (not shown). Then, the openings 30b on both sides of the cylindrically wound first exterior film 30 are sealed in a horizontal line by heat sealing or the like, and the sealed portions are cut into individual bags.

[0031] <Toilet roll packaging> As shown in Fig. 2, the toilet roll packaging 20 (hereinafter sometimes simply referred to as "package 20") is made by arranging toilet rolls 40 in three rows (six rolls in total) in the width direction (Y direction), with two rolls arranged in the axial direction (X direction) as one row, and packaging the toilet roll 40 in a second exterior film 50. As shown in Fig. 3, the toilet roll 40 is made by winding up two or more plies of double embossed toilet paper 40a into a roll.

[0032] <Second exterior film> The second exterior film 50 is a resin film that packages multiple toilet rolls 40. The second exterior film 50 covers, from all directions, the multiple toilet rolls 40 that are arranged in three rows in the width direction, with two rolls per row.

[0033] Examples of the resin film used for the second exterior film 50 include LDPE (low density polyethylene), LLDPE (linear low density polyethylene), HDPE (high density polyethylene), CPP (unoriented polypropylene), or a film obtained by blending or mixing these materials. In addition, the film may be a film obtained by laminating, coating, or multi-layering a different material on these films. Examples of the different materials include OPP (oriented polypropylene), EVOH (ethylene vinyl alcohol copolymer), Ny (nylon), PET (polyethylene terephthalate), PVDC (polyvinylidene chloride), and the like. Among these, the resin film used for the second exterior film 50 is preferably LLDPE, LDPE, or a mixture of these, and most preferably LDPE. By using LLDPE, LDPE, or a mixture of these as the resin film used for the first exterior film 30, even when a soft toilet roll 40 having high water absorption is packaged, the toilet roll 40 can be packaged tightly and in a manner that makes it difficult for the toilet roll 40 to deform.

[0034] The packaging of the plurality of toilet rolls 40 in the second exterior film 50 is preferably caramel packaging. By using caramel packaging, it becomes easier to maintain the tightness of the packaging.

[0035] Caramel packaging is known. For example, a plurality of toilet rolls 40 are placed in three rows in the width direction, with two rolls per row, on a sheet-like second exterior film 50, and the second exterior film 50 is wound around the circumferential surface of the toilet roll 40 to form a tube. Then, of the second exterior film 50 protruding from both ends in the axial direction of the plurality of toilet rolls 40, two opposing flap-shaped sides are folded against each other, and then another two opposing flap-shaped sides are folded against each other in the same manner, and these folded parts are sealed by heat fusion or the like. In this way, both end faces in the axial direction of each row of the caramel-packaged toilet rolls 40 are positioned on approximately the same plane in each row and face the top surface 20a and bottom surface 20b of the packaging body 20.

[0036] <Toilet roll> As shown in FIG. 3, the toilet roll 40 is made by winding up 2 or more plies of double embossed toilet paper 40a into a roll, and has a core 41 such as a cylindrical paper tube or a cylindrical space in the center.

[0037] (core) The core 41 is present in the center of the toilet roll 40. The core 41 may be a cylindrical cardboard tube, or may be a cylindrical space. In this embodiment, the core 41 of the toilet roll 40 has a cardboard tube, and the toilet paper 40a is wound around the cardboard tube. In the following description, the core 41 means the cardboard tube, unless otherwise specified.

[0038] (Core outer diameter) The outer diameter DI of the core 41 (hereinafter referred to as the "core outer diameter DI") is preferably 25 mm or more and 48 mm or less. If the core outer diameter DI is smaller than 25 mm, the hole becomes too small, the winding density becomes low, and the toilet roll 40 becomes easily deformed. On the other hand, if the core outer diameter DI is larger than 48 mm, the winding diameter of the toilet roll 40 becomes too large. The lower limit of the above range of the core outer diameter DI is more preferably 35 mm or more, and even more preferably 37 mm or more. The upper limit of the above range of the core outer diameter DI is more preferably 46 mm or less, and even more preferably 43 mm or less. In the following description, the core outer diameter DI means the outer diameter of the cardboard tube when the core 41 has a cardboard tube, and means the diameter of the cylindrical space (center hole) when the core 41 does not have a cardboard tube.

[0039] (Core weight) The weight of the core 41 (hereinafter referred to as "core weight") is preferably 4.0 g or more and 7.0 g or less. The lower limit of the above range of the core weight is more preferably 4.5 g or more, and even more preferably 5.0 g or more. The upper limit of the above range of the core weight is more preferably 6.5 g or less, and even more preferably 6.0 g or less.

[0040] (Roll diameter) The roll diameter (outer diameter) DR of the toilet roll 40 (hereinafter sometimes simply referred to as "roll diameter DR") is 118 mm or more and 140 mm or less. If the roll diameter DR is smaller than 118 mm, the roll diameter DR becomes too small and the roll length becomes too short. On the other hand, if the roll diameter DR is larger than 140 mm, the roll diameter DR becomes too large. The lower limit of the above range of the roll diameter DR is more preferably 122 mm or more, and even more preferably 125 mm or more. The upper limit of the above range of the roll diameter DR is more preferably 138 mm or less, and even more preferably 135 mm or less.

[0041] (Volume length) The roll length of the toilet roll 40 (hereinafter sometimes simply referred to as "roll length") is preferably 34 m or more and 57 m or less. If the roll length is shorter than 34 m, the roll length will be too short and the roll diameter will be too small. On the other hand, if the roll length is longer than 57 m, the roll diameter will be too large. The lower limit of the above range of the roll length is more preferably 36 m or more, and even more preferably 38 m or more. The upper limit of the above range of the roll length is more preferably 52 m or less, and even more preferably 46 m or less.

[0042] (winding density) The winding density of the toilet roll 40 (hereinafter sometimes simply referred to as "winding density") is 0.55 m / cm 2 More than 0.85m / cm 2 The winding density is 0.55m / cm 2 If the winding density is smaller (lower) than 0.85 m / cm, the toilet roll 40 becomes too soft and easily deforms. 2 If the winding density is greater (higher) than 0.63 m / cm, the toilet roll 40 will be too hard and will be inferior in softness. 2 More preferably, it is 0.65 m / cm or more. 2 The upper limit of the above range of the winding density is preferably 0.80 m / cm or more. 2 More preferably, it is 0.78 m / cm or less. 2 It is even more preferable that:

[0043] The winding density is expressed by the following formula (1). Winding density = (winding length × number of plies) ÷ (cross-sectional area of ​​toilet roll 40) (1) The cross-sectional area of ​​the toilet roll 40 is expressed by the following formula (2). Cross-sectional area of ​​toilet roll 40=(cross-sectional area of ​​toilet roll 40 at roll diameter DR (outer diameter))−(cross-sectional area of ​​core outer diameter DI) (2)

[0044] For example, in the case of a winding length of 43 m, 2 plies, winding diameter (DR) of 121 mm, and core outer diameter (DI) of 37 mm, winding density = (43 m x 2) ÷ {3.14 x (121 mm ÷ 2 ÷ 10) 2 -3.14×(37mm÷2÷10) 2}=0.82m / cm 2 It becomes.

[0045] (Roll softness) When evaluating the softness of the toilet roll 40, the "roll softness" described below can be used to evaluate the softness of the toilet roll 40 when held in the hand.

[0046] The roll softness of the toilet roll 40 (hereinafter sometimes simply referred to as "roll softness") is measured using a compression tester (Handy Compression Tester KES-G5 manufactured by Kato Tech Co., Ltd.) as follows. The direction parallel to the axial direction of the toilet roll 40 is defined as the height direction, and the direction perpendicular to the tangent to the circumference of the toilet roll 40 is defined as the radial direction.

[0047] First, an acrylic pipe is inserted into the core 41 of the toilet roll 40. The thickness of the acrylic pipe is 2 mm. The length of the acrylic pipe is about 10 mm longer than the roll width (length in the axial direction) of the toilet roll 40. The outer diameter of the acrylic pipe is slightly smaller than the inner diameter of the core 41 of the toilet roll 40, and is large enough that the toilet roll 40 does not move under its own weight when the axial direction of the toilet roll 40 is placed vertically after the acrylic pipe is inserted. If it is difficult to insert the acrylic pipe into the core 41 and the outer diameter of the acrylic pipe is to be slightly smaller, the thickness of the acrylic pipe may be slightly reduced using waterproof paper or the like. The mass of the acrylic pipe is about 32 g when the length is 120 mm and the outer diameter is 38 mm.

[0048] Next, the toilet roll 40 is placed horizontally on the table of the test machine so that the axial direction of the toilet roll 40 is horizontal. Then, the above-mentioned KES-G5 compression tool (contact area 2.0 cm 2 ) is placed at the center of the axial direction of the toilet roll 40. 2) is pressed from above in the radial direction at a speed of 10 mm / min. The pressure with which the compression element presses the roll is 5 gf / cm 2 The indentation depth at this time is T0, and the pressure is 150gf / cm 2 The pressing depth at this time is defined as Tm, and (Tm-T0) is measured as the "roll softness". Five rolls are measured at five positions (0°, 30°, 60°, 90°, 135°), and a total of 25 measurement results are averaged. The axial position when the compression element is pressed into the toilet roll 40 does not have to be the axial center, except for a range of 20 mm from both ends of the toilet roll 40 in the axial direction. In measuring the roll softness of the toilet roll 40 of the present invention, the compression element is pressed into the vicinity of the middle between the axial center and the ends of the toilet roll 40.

[0049] The roll softness of the toilet roll 40 is 2.5 mm or more and 5.0 mm or less. If the roll softness of the toilet roll 40 is less than 2.5 mm, it will be too hard and will have poor softness. If the roll softness of the toilet roll 40 is more than 5.0 mm, it will be too soft and will be easily deformed. The lower limit of the above range of roll softness is more preferably 3.0 mm or more, and even more preferably 3.5 mm or more. The upper limit of the above range of winding density is more preferably 4.5 mm or less, and even more preferably 4.0 mm or less.

[0050] (Roll weight) The roll mass of the toilet roll 40 per 114 mm of width (hereinafter, sometimes simply referred to as "roll mass") is preferably 155 g or more and 275 g or less. If the roll mass is lower than 155 g, the winding length becomes too short and the winding diameter becomes too small. On the other hand, if the roll mass is higher than 275 g, the winding diameter becomes too large. The lower limit of the above range of the roll mass is more preferably 165 g or more, and even more preferably 170 g or more. The upper limit of the above range of the roll mass is more preferably 245 g or less, and even more preferably 205 g or less. When the toilet roll 40 has a paper tube as the core 41, the roll mass is the mass including the core (paper tube) 21. The roll mass is the mass per 114 mm of width (roll width: axial length). When the roll width is not 114 mm, it is converted to the mass per 114 mm by proportional calculation.

[0051] (Roll density) The roll density of the toilet roll 40 (hereinafter sometimes simply referred to as "roll density") is 0.08 g / cm 3 More than 0.18g / cm 3 The roll density is preferably 0.08 g / cm or less. 3 If the roll density is less than 0.18 g / cm, the toilet roll 40 becomes too soft and easily deforms. 3 If it is greater than 0.10 g / cm, the toilet roll 40 becomes too hard and has poor softness. 3 More preferably, it is 0.12 g / cm or more. 3 The upper limit of the above range of the roll density is preferably 0.17 g / cm. 3 More preferably, it is 0.16 g / cm or less. 3 It is even more preferable that:

[0052] The roll density of the toilet roll 40 is expressed as (roll mass of the toilet roll 40)÷(volume of the toilet roll 40), and is calculated by the following formula (3). Roll density = roll mass ÷ [{(cross-sectional area of ​​the portion of the toilet roll 40 with the roll diameter DR (outer diameter)) - (cross-sectional area of ​​the portion of the core with the outer diameter DI)} × roll width (calculated based on 114 mm)] (3)

[0053] For example, if the roll mass per 114 mm of roll width is 180 g, the roll diameter (DR) is 121 mm, and the core outer diameter (DI) is 37 mm, the roll density = 180 g ÷ {(3.14 × (121 mm ÷ 2 ÷ 10) 2 -3.14×(37mm÷2÷10) 2 )×(114mm÷10)}=0.15g / cm 3 It becomes.

[0054] <Toilet paper> The toilet paper 40a is a sheet of 2 or more plies that has been double embossed. The number of plies of the toilet paper 40a is more preferably 2 or more and 3 or less, and even more preferably 2 plies. The embossing pattern preferably includes a line shape. By using a line embossing pattern, the embossing is less likely to be crushed even when pressure is applied by the second exterior film 50 or the adjacent toilet roll 40, and the water absorbency and softness of the sheet can be maintained. By using a double embossing, the packaging can be made tight and deformation of the toilet roll 40 can be suppressed. Note that double embossing refers to embossing each sheet of 2 plies separately. In addition, the toilet paper 20a that has been double embossed and is stacked in 2 or more plies means that the toilet paper 20a that has been double embossed has at least 2 plies. In addition, the linear embossing pattern means an embossing pattern that is 3 mm or longer in length. In addition, the double embossed sheet of 2 or more plies is preferably bonded with ply bond glue or water, more preferably with water, which can prevent damage and deformation of the toilet roll 40 while maintaining the water absorbency of the toilet paper 40a.

[0055] (paper thickness) The paper thickness per 10 ply of the toilet paper 40a (hereinafter simply referred to as the "paper thickness of the toilet paper 40a") is 1.1 mm / 10 ply or more and 1.9 mm / 10 ply or less. If the paper thickness of the toilet paper 40a is thinner (lower) than 1.1 mm / 10 ply, the toilet roll 40 becomes too soft and easily deformed. On the other hand, if the paper thickness of the toilet paper 40a is thicker (higher) than 1.9 mm / 10 ply, the toilet roll 40 becomes less soft. The lower limit of the above range of the paper thickness of the toilet paper 40a is more preferably 1.2 mm / 10 ply or more, and even more preferably 1.3 mm / 10 ply or more. The upper limit of the above range of the paper thickness of the toilet paper 40a is more preferably 1.7 mm / 10 ply or less, and even more preferably 1.5 mm / 10 ply or less. In addition, "ply" included in the unit is synonymous with "PLY", and the same applies in the following explanation.

[0056] The paper thickness of the product ply of the toilet paper 40a is preferably 0.22 mm / product ply or more and 0.38 mm / product ply or less. The product ply means the number of plies of the toilet paper 40a as a product. In other words, the paper thickness of the product ply means the paper thickness of the toilet paper 40a as a product with the number of plies. For example, if the toilet paper 40a is a 2-ply product, it means the paper thickness of 2 plies, and if it is a 3-ply product, it means the paper thickness of 3 plies. The lower limit of the above range of the paper thickness of the product ply of the toilet paper 40a is more preferably 0.24 mm / product ply or more, and even more preferably 0.26 mm / product ply or more. The upper limit of the above range of the paper thickness of the product ply of the toilet paper 40a is more preferably 0.34 mm / product ply or less, and even more preferably 0.30 mm / product ply or less.

[0057] The paper thickness is measured by the following method. The device used is a thickness gauge (Ozaki Manufacturing's "PEACOCK" dial thickness gauge). The measurement conditions are a measurement load of 3.7 kPa and a gauge diameter of 30 mm. The sample is placed between the gauge and the measurement table, and the gauge is read when the gauge is lowered at a speed of 1 mm per second or less. When measuring the paper thickness per 10 ply, 10 ply (5 sets of 2 ply sheets) are stacked and measured, and the measurement is repeated 10 times and the measurement results are averaged. In addition, in the case of a 3 ply sheet, 9 ply (3 sets of 3 ply sheets) are stacked and measured, and the paper thickness of 1 ply is calculated from the measurement results and converted to 10 ply. The paper thickness of the product ply is calculated by proportional calculation. The paper thickness is measured at 10 points in total, including 5 different points in the MD direction of the sheet and 5 points shifted from these 5 points in the CD direction. Regarding the measurement positions for the paper thickness, it is important to measure at 10 different points, but the exact positions are not important.

[0058] (Basic weight) The basis weight of the toilet paper 40a product ply is measured according to JIS P 8124 and is 30 g / m 2 More than 50g / m 2 The basis weight of the product ply of the toilet paper 40a is preferably 30 g / m 2 On the other hand, if the basis weight of the product PLY of the toilet paper 40a is 50 g / m 2 If the roll density is larger than 33 g / m, the roll density will be high and the roll softness will be hard. 2 More preferably, it is 36 g / m or more. 2 The upper limit of the above range of the basis weight of the product ply of the toilet paper 40a is 45 g / m 2 More preferably, it is 40 g / m or less. 2 It is even more preferable that:

[0059] (specific volume) The specific volume of 40a toilet paper is 6cm 3 / g or more 9cm 3 / g or less. 3 If the specific volume of toilet paper 40a is less than 9 cm3 / g, the roll becomes hard and absorbency is poor. 3 If the ratio is larger than 1 / g, the roll softness becomes hard. The specific volume of the toilet paper 40a is calculated by dividing the paper thickness of a predetermined number of plies (e.g., product ply) of the toilet paper 40a by the basis weight of the predetermined number of plies, and expressing the volume cm per unit g. 3 The lower limit of the above range of the specific volume of the toilet paper 40a is 6.5 cm 3 / g or more is more preferable, and 3 / g or more. The upper limit of the above range of the specific volume of the toilet paper 40a is 8.5 cm 3 / g or less is more preferable, and 3 It is more preferable that the molecular weight is not more than 1 / g.

[0060] (Tensile strength DMDT) The tensile strength DMDT in the MD (Machine Direction) direction when dry based on JIS P 8113 of the product ply of the toilet paper 40a (hereinafter sometimes referred to as "tensile strength DMDT of the product ply") is preferably 2.0 N / 25 mm or more and 5.5 N / 25 mm or less. The lower limit of the above range of the tensile strength DMDT of the product ply is more preferably 2.5 N / 25 mm or more, and even more preferably 3.0 N / 25 mm or more. The upper limit of the above range of the tensile strength DMDT of the product ply is more preferably 4.5 N / 25 mm or less, and even more preferably 4.0 N / 25 mm or less.

[0061] (Tensile strength DCDT) The tensile strength DCDT in the cross direction (CD) when dry based on JIS P 8113 in the product ply of the toilet paper 40a (hereinafter sometimes referred to as "tensile strength DCDT in the product ply") is preferably 0.6 N / 25 mm or more and 1.6 N / 25 mm or less. The lower limit of the above range of the tensile strength DCDT in the product ply is more preferably 0.8 N / 25 mm or more, and even more preferably 1.0 N / 25 mm or more. The upper limit of the above range of the tensile strength DCDT in the product ply is more preferably 1.4 N / 25 mm or less, and even more preferably 1.2 N / 25 mm or less.

[0062] (Measurement of tensile strength) The tensile strengths DMDT and DCDT of the product PLY of the toilet paper 40a are measured based on JIS P 8113. For example, they can be measured using a Tensilon universal testing machine STB-1225S (manufactured by A&D Co., Ltd.) by a method conforming to JIS P 8113. However, the test piece is measured after being held in equilibrium under the temperature and humidity conditions specified in JIS P 8111 (23±1°C, 50±2% RH) with the test piece having a width dimension (direction perpendicular to the tensile direction of the Tensilon universal testing machine) of 25 mm, the distance between the grips being 100 mm, and the tensile speed being 300 mm / min.

[0063] If the tensile strengths DMDT and DCDT are lower than the lower limit of the above range (2.0 N / 25 mm, 0.6 N / 25 mm), the toilet roll 40 becomes easily deformed. On the other hand, if the tensile strengths DMDT and DCDT are higher than the upper limit of the above range (5.5 N / 25 mm, 1.6 N / 25 mm), the roll becomes hard.

[0064] (HF (hand feel) value) The HF value (hereinafter sometimes simply referred to as "HF value") of the toilet paper 40a product PLY measured by a TSA (tissue softness measuring device) is 85 or more and 100 or less. If the HF value is lower than 85, the water absorbency and softness will be poor. On the other hand, if the HF value is higher than 100, the roll will be too soft and prone to deformation. The HF value can be adjusted by adjusting the raw material composition, basis weight, strength, etc. The lower limit of the above-mentioned range of HF value is more preferably 87 or more, and even more preferably 90 or more.

[0065] The HF value using the tissue softness measuring device TSA is measured by setting the device's algorithm to TP II and using a sample of toilet paper 40a processed into a circle with a diameter of about 113 mm. The measurement is performed on the surface side of the toilet paper 40a of the sample (the surface side that will be on the outside in the radial direction when rolled). The measuring device used for this is described in detail in, for example, JP 2013-236904 A. The above patent documents can be referenced for the measurement method using the tissue softness measuring device TSA.

[0066] (Water absorption rate) The water absorption speed of the toilet paper 40a product PLY measured in accordance with the old JIS S 3104 (hereinafter, sometimes simply referred to as the "water absorption speed of the toilet paper 40a") is 3 seconds / 0.1 ml or less. The water absorption speed of the toilet paper 40a is expressed as the time it takes for a drop of 0.1 ml of purified water to be absorbed when the water droplet is dropped onto the toilet paper 40a under the temperature and humidity conditions specified in JIS P 8111 (23±1°C, 50±2% RH). If the water absorption speed of the toilet paper 40a is slower than 3 seconds / 0.1 ml, the water absorption is inferior. The water absorption speed of the toilet paper 40a can be adjusted by adjusting the raw material composition, adjusting the basis weight, etc. The upper limit of the above range of the water absorption speed of the toilet paper 40a is more preferably 2.5 seconds / 0.1 ml or less, and even more preferably 2 seconds / 0.1 ml or less.

[0067] (Excess film length) The length Lf of the excess film 30a of the first exterior film 30 in the toilet roll packaging package 10 (hereinafter referred to as "excess film length Lf") is 5 mm or more and 25 mm or less. As shown in FIG. 4, the excess film length Lf is the axial length Lf of the excess film 30a of the first exterior film 30 when the excess film (excess film 30a) of the first exterior film 30 on one axial surface (e.g., the top surface side) of the toilet roll packaging package 10 is pinched. If the excess film length Lf is shorter than 5 mm, the toilet roll 40 is easily crushed and deformed. On the other hand, if the excess film length L is longer than 25 mm, the tightness is inferior. The lower limit of the above range of the excess film length Lf is more preferably 7 mm or more, and more preferably 10 mm or more. The upper limit of the above range of the excess film length Lf is more preferably 23 mm or less, and more preferably 20 mm or less. The surface on which the excess film length Lf is measured is not limited to the top surface, but is preferably the surface on the cross-sectional side of the toilet roll 40.

[0068] (Method of measuring excess film length) The excess film length Lf is measured, for example, as follows.

[0069] As shown in FIG. 4(a), when measuring the surplus film length Lf, first, a clip 60 is prepared. The width Wc of the tip 60a of the clip 60 is preferably 10 mm or more and 50 mm or less. In addition, the depth Lc of the clamping margin 61, which can clamp the object of the clip 60, from the tip 60a is preferably at least 25 mm or more. In the clip 60 of this embodiment, the width Wc of the tip 60a is 21 mm, and the depth Lc of the clamping margin 61 is 25 mm or more. The clip 60 has at least a force (clamping force) that prevents the surplus film 30a from slipping away when clamping the surplus film 30a. Note that the width Wc of the tip 60a of the clip 60 and the depth Lc of the clamping margin 61 are not limited to the above, and may be any as long as the surplus film 30a can be uniformly clamped and the clamped state can be maintained by the force of the clip 60.

[0070] Next, as shown in FIG. 4(b), on one axial surface (for example, the bottom surface) of the toilet roll packaging package 10, excess film of the first exterior film 30 is gathered together and pinched with fingers, and then pinched up perpendicular to the axial direction.

[0071] Next, as shown in Figure 4(c), instead of using fingers to pinch and fasten excess film 30a with clip 60. At this time, tip 60a of clip 60 is located at the base of excess film 30a and abuts against one axial surface of the internal toilet roll packaging 20, and the other area of ​​first exterior film 30 fits against the internal toilet roll packaging 20.

[0072] Finally, as shown in FIG. 4(c), in a state where the excess film 30a is stretched in the axial direction without slack, the length from the tip 60a of the clip 60 to the tip of the excess film 30a (the axial length of the excess film 30a) is measured as the excess film length Lf. Such measurements are performed at a plurality of measurement positions (five in this embodiment) on the toilet roll packaging package 10, which will be described later. At each of the plurality of measurement positions, the excess film 30a is measured by pinching it from both sides in the width direction (Y direction) and the excess film 30a is measured by pinching it from both sides in the thickness direction (Z direction). That is, in this embodiment, two measurements are performed in different pinching directions at five measurement positions on one side of the toilet roll packaging package 10 in the axial direction, for a total of ten measurements. The average value of the ten measurement results is taken as the excess film length Lf.

[0073] (Measurement position of excess film length) As shown in FIG. 5, the excess film length Lf is measured at five points in total: one point (position x1 in FIG. 5) at the center of one side of the toilet roll package 10 in the axial direction, two points on both sides of position x1 in the width direction (positions x2 and x3 in FIG. 5), and two points on both sides of position x1 in the thickness direction (positions x4 and x5 in FIG. 5). The center position x1 is the center of the toilet roll package 10 in the width direction (Y direction) and thickness direction (Z direction). The positions x2 and x3 on both sides in the width direction are the center of the toilet roll package 10 in the thickness direction, and are the same positions in the width direction as the axial centers of the toilet rolls 40 on both sides in the width direction. In other words, the distance from the center position x1 to the positions x2 and x3 on both sides in the width direction is approximately the same as the winding diameter DR of the toilet roll 40. Positions x4 and x5 on both sides in the thickness direction are the centre in the width direction of the toilet roll packaging package 10, and are at the same position in the thickness direction as the axial centre of the toilet roll 40 located at the outermost sides on both sides in the thickness direction. Note that Fig. 5(a) shows the measurement positions when five toilet roll packages 20 are packaged, Fig. 5(b) shows the measurement positions when four toilet roll packages 20 are packaged, Fig. 5(c) shows the measurement positions when three toilet roll packages 20 are packaged, and Fig. 5(d) shows the measurement positions when two toilet roll packages 20 are packaged.

[0074] (Relationship between excess film length and roll softness) The value A, which is expressed by the following formula (4) and which indicates the relationship between the excess film length Lf and the roll softness of the toilet roll 40, is 1 or more and 8 or less. Value A = (excess film length Lf (mm)) / (roll softness of toilet roll 40 (mm)) (4) If the value A is lower than 1, the toilet roll 40 becomes too soft and is crushed and deformed. On the other hand, if the value A is higher than 8, tightness cannot be ensured. The lower limit of the above range of the value A is more preferably 3 or more, and even more preferably 4 or more. The upper limit of the above range of the value A is more preferably 7 or less, and even more preferably 6 or less.

[0075] (Relationship between excess film length and winding density) The value B, which is expressed by the following formula (5) and which indicates the relationship between the excess film length Lf and the winding density of the toilet roll 40, is 14 or more and 40 or less. Value B = (excess film length Lf (mm)) / (winding density of toilet roll 40 (m / cm 2 ))···(5) If the value B is lower than 14, tightness cannot be ensured. If the value B is higher than 40, the toilet roll 40 will be crushed and deformed. The lower limit of the above range of the value B is more preferably 16 or more, and even more preferably 18 or more. The upper limit of the above range of the value B is more preferably 35 or less, and even more preferably 30 or less.

[0076] (Drop from top of table) As shown in FIG. 6, in the toilet roll wrapping package 10 according to the present disclosure, the drop hd from the upper surface 101 of the base 100 (hereinafter sometimes referred to as "drop hd from the base surface") is appropriately set.

[0077] As shown in Fig. 6, when measuring the drop hd from the table surface, first, the toilet roll packaging package 10 is placed on the table 100. Next, the toilet roll packaging 20A located at the endmost position in the thickness direction (the right end in Fig. 6) among the multiple toilet roll packagings 20 is dropped outside the edge of the table 100. At this time, the othermost surface in the thickness direction of the toilet roll packaging 20B located next to the toilet roll packaging 20A is placed in a position along the edge of the table 100, and the toilet roll packaging 20A is dropped outside the edge of the table 100. At this time, the drop hd of the toilet roll packaging 20A dropped from the upper surface 101 of the table 100 is measured. The drop hd of the toilet roll packaging 20A dropped from the upper surface 101 of the table 100 is measured at the four corners (four corners of the sides extending in the width direction and the sides extending in the thickness direction) of the bottom surface of the toilet roll packaging 20A. The same measurement is also taken for the end of the multiple toilet roll packages 20 on the opposite side in the thickness direction (the left end in FIG. 6).Then, the average of the eight measurements taken on both sides in the thickness direction is calculated to determine the drop hd from the table surface.

[0078] The drop hd from the base surface of the toilet roll packaging package 10 is 10 mm or more and 50 mm or less. If the drop hd from the base surface is shorter than 10 mm, the packaging by the first exterior film 30 becomes too tight, and the toilet roll 40 is crushed and deformed. On the other hand, if the drop hd from the base surface is longer than 50 mm, the tightness cannot be ensured. The lower limit of the above range of the drop hd from the base surface is more preferably 13 mm or more, and even more preferably 15 mm or more. The upper limit of the above range of the drop hd from the base surface is more preferably 40 mm or less, and even more preferably 30 mm or less.

[0079] Although the present invention has been described based on the above embodiment, the present invention is not limited to the contents of the above embodiment, and can be modified as appropriate without departing from the scope of the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on this embodiment are naturally included in the scope of the present invention. EXAMPLES

[0080] The present embodiment will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to the following examples.

[0081] (Examples 1 to 15 and Comparative Examples 1 to 8) Toilet roll packaging packages of Examples 1 to 15 and Comparative Examples 1 to 8 were produced under the conditions shown in Tables 1 and 2. Each toilet roll packaging package was then evaluated in the following five ways (evaluation of "tightness", "roll deformation", "water absorbency", "sheet softness", and "roll softness"). Each evaluation was carried out after maintaining the package in equilibrium under temperature and humidity conditions (23±1°C, 50±2% RH) specified in JIS P8111. Each parameter other than the following evaluations was measured according to the standards or measurement methods described above.

[0082] (Tightness) The evaluation of "packaging tightness and roll damage" was conducted by 20 monitors through a sensory evaluation method in which the tightness of the packaging, damage to the roll, etc. were evaluated by selecting "good" or "bad". The evaluation was based on the following criteria. ◎: 18 or more people answered "Good" ○: 14 to 17 people answered "Good" △: 10 to 13 people answered "Good" ×: 7 to 9 people answered "Good" ××: 6 or fewer people answered "Good"

[0083] (Roll deformation) The evaluation of "roll deformation" was a sensory evaluation by 20 panelists, who selected "yes" or "no" for the deformation of the toilet roll. The evaluation was based on the following criteria: ◎: 18 or more people answered "None" ○: "None": 14 to 17 people △: 10 to 13 people answered "None" ×: 7 to 9 people answered "None" ××: 6 or fewer people answered "None"

[0084] (Water absorption) The "water absorption" was evaluated by evaluating the water absorption rate using the method described above, and was evaluated according to the following criteria. ◎ :2.0 seconds or less ○: Slower than 2.0 seconds and 2.5 seconds or less △: Slower than 2.5 seconds and 3.0 seconds or less × : Slower than 3.0 seconds

[0085] (Softness of the sheet) The "sheet softness" was evaluated by the HF value measured by TSA using the method described above, and was evaluated according to the following criteria. ◎:TSA HF value is 90 or higher ○: HF value by TSA is 87 or more and less than 90 △: HF value by TSA is 85 or more and less than 87 ×: HF value by TSA is less than 85

[0086] (Roll softness) The evaluation of "softness of the roll" was a sensory evaluation by 20 monitors, who selected "soft" or "hard" for the softness of the toilet roll. The evaluation was based on the following criteria. ◎: More than 18 people said "soft" ○: 14 to 17 people say "soft" △: 10 to 13 people say "soft" ×: 7 to 9 people say "soft" ××: "Soft": 6 or less people

[0087] The results obtained are shown in Tables 1 and 2.

[0088] [Table 1]

[0089] [Table 2]

[0090] As can be seen from Tables 1 and 2, the present disclosure confirms that it is possible to provide a toilet roll package that can tightly package even when 2 to 5 six-roll toilet roll packages are packaged together in film, and that can prevent deformation of the toilet roll while maintaining water absorbency and sheet softness. [Explanation of symbols]

[0091] 10: Toilet roll packaging 20, 20A, 20B: Toilet roll packaging body 30: First exterior film 30a: Excess film 40: Toilet roll 40a:Toilet paper 50: Second exterior film

Claims

1. A toilet roll package package in which a plurality of toilet roll packages each containing six rolls are packaged in a first exterior film, The toilet roll packaging is a packaging in which toilet rolls, each of which is made of 2-ply or more double embossed toilet paper wound into a roll, are arranged in three rows in the width direction, with two rolls arranged in the axial direction as one row, and packaged in a second exterior film; the toilet roll packaging is arranged in a thickness direction of the toilet roll packaging in a number of rows of 2 to 5, and packaged in the first exterior film; The roll softness of the toilet roll is 2.5 mm or more and 5.0 mm or less, The winding density of the toilet roll is 0.55 m / cm ２ 0.85m / cm or more ２ is as follows: The roll diameter of the toilet roll is 118 mm or more and 140 mm or less, The toilet paper has a paper thickness of 1.1 mm / 10 ply or more and 1.9 mm / 10 ply or less, The HF value of the toilet paper product PLY according to the TSA is 85 or more and 100 or less; The water absorption rate of the toilet paper product PLY measured in accordance with the former JIS S 3104 is 3 seconds / 0.1 ml or less; an excess film length, which is the length in the axial direction of the excess film of the first exterior film when the excess film of the toilet roll packaging package is pinched, is 5 mm or more and 25 mm or less; The value represented by the formula: (the excess film length) / (the roll softness of the toilet roll) is 1 or more and 8 or less, The value represented by the formula: (the excess film length) / (the winding density of the toilet roll) is 14 or more and 40 or less, when the toilet roll package is placed on a stand and the toilet roll package located at the end of the thickness direction among the plurality of toilet roll packages is dropped outside the edge of the stand, the drop from the upper surface of the stand is 10 mm or more and 50 mm or less, The weight of the toilet roll packaging package is 2 kg or more and 8 kg or less. A toilet roll packaging package.

2. The basis weight of the toilet paper product PLY is 30 g / m ２ 50g / m or more ２ is less than or equal to 2. The toilet roll wrapper package of claim 1.

3. The specific volume of the toilet paper is 6 cm ３ / g or more 9cm ３ / g or less 3. The toilet roll wrapper package according to claim 1 or 2.

4. The roll length of the toilet roll is 34 m or more and 57 m or less.

3. The toilet roll wrapper package according to claim 1 or 2.

5. The roll mass of the toilet roll per 114 mm width is 155 g or more and 275 g or less.

3. The toilet roll wrapper package according to claim 1 or 2.

6. The roll density of the toilet roll is 0.08 g / cm ３ 0.18g / cm or more ３ is less than or equal to 3. The toilet roll wrapper package according to claim 1 or 2.

7. The tensile strength DMDT in the MD direction in a dry state based on JIS P 8113 of the toilet paper product PLY is 2.0 N / 25 mm or more and 5.5 N / 25 mm or less.

3. The toilet roll wrapper package according to claim 1 or 2.

8. The tensile strength (DCDT) in the CD direction when dry based on JIS P 8113 of the toilet paper product PLY is 0.6 N / 25 mm or more and 1.6 N / 25 mm or less.

3. The toilet roll wrapper package according to claim 1 or 2.

9. The plurality of toilet roll packages are packaged in a pillow package by the first exterior film.

3. The toilet roll wrapper package according to claim 1 or 2.

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