TW202411121A - Roll package - Google Patents

Abstract

A roll package in which a roll assembly formed by collecting a plurality of sanitary thin paper rolls are shrunk and packed, the roll package including: a tray member that is formed from paper, is arranged on a lower surface of the roll assembly, and accommodates a part of the roll assembly; and a shrink film that covers the roll assembly from the outside of the tray member.

Description

Roll packaging

The present invention relates to a roll packaging body.

Sanitary tissues such as toilet paper are distributed as a plurality of rolls in a state of being contained in a packaging bag made of a resin film (for example, Patent Document 1). The roll packaging body formed by wrapping such a sanitary tissue roll with a resin film is further transported and stored in a state of being wrapped in a plurality of bundles with corrugated boxes and kraft paper, and when sold, these bundles are unpacked and displayed in stores (for example, Patent Document 2).

In recent years, efforts have been made to stop using resin films from the perspective of reducing _CO2 emissions and plastics. Also, from the perspective of the Sustainable Development Goals (SDGs), efforts have been made to reduce excessive product packaging.

[Prior technical literature] (Patent literature) Patent literature 1: Japanese Patent Publication No. 2017-124868 Patent literature 2: Japanese Patent Publication No. 2021-147094

[Problem to be solved by the invention] The resin film used for packaging toilet tissue rolls is used as a handle for holding and transporting or as a packaging material for temporary storage, but it will eventually be discarded, so it is desired to reduce its usage. In addition, the roll packaging body formed by packaging toilet tissue rolls with resin films is further packaged into multiple bundles with corrugated boxes and kraft paper, which is excessive packaging.

On the other hand, when shrinking and packaging the sanitary tissue roll, the amount of resin is reduced, but the shrinkage of the film may cause wrinkles and deformation in the soft sanitary tissue roll. In addition, when the sanitary tissue roll is packaged only with paper, the strength and foldability of the paper as a packaging material have limits, so the packaging capacity of the sanitary tissue roll cannot be increased.

The problem of the present invention is to provide a roll packaging body, which is not easy to produce wrinkles and deformation in the sanitary tissue roll after packaging, and can increase the packaging capacity of the sanitary tissue roll.

[Technical means for solving the problem] One aspect of the present invention is a roll packaging body, which is a roll packaging body formed by shrinking and packaging a roll assembly having a plurality of sanitary tissue rolls, and comprises: a paper tray member, which is arranged below the roll assembly to accommodate a part of the roll assembly; and a shrink film, which covers the roll assembly from the outer side of the tray member.

[Effect of the invention] According to one aspect of the present invention, a roll packaging body can be provided, which is not easy to produce wrinkles and deformation on the sanitary tissue roll after packaging, and can increase the packaging capacity of the sanitary tissue roll.

The implementation form of the present invention is described in detail with reference to the drawings. In each figure, the same symbols are given to common parts and the description is omitted. In each figure, the proportions of each component may be different from the actual ones. In addition, in each figure, a three-dimensional orthogonal coordinate system with three-axis directions (X direction, Y direction, and Z direction) is used, and the long side direction (left-right direction) of the roll packaging body is set as the X direction, the width direction (front-back direction) is set as the Y direction, and the height direction (up-down direction or thickness direction) is set as the Z direction.

In this specification, for directions such as orthogonal, deviations are allowed to the extent that the functions and effects of the embodiment are not impaired. Orthogonal may also include substantially orthogonal. Also, the shape of the corner is not limited to a right angle, but may be a rounded arcuate shape.

<First embodiment> Fig. 1 shows a roll packaging body 100 of the first embodiment. In the roll packaging body 100 of the first embodiment, a roll assembly AG in which a plurality of sanitary tissue rolls 10 are accumulated is shrink-packaged. The roll packaging body 100 has a tray 20 and a shrink film 30.

Here, shrink packaging refers to a packaging form in which the object to be packaged is covered with a shrink film and then passed through a shrink packaging device also called a shrink tunnel or a heater tunnel to shrink the shrink film with hot air, so that the shrink film is tightly attached to the outside of the object.

The material of the shrink film is not particularly limited, and examples thereof include heat-shrinkable resin films such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), polyethylene terephthalate (PET), etc. In addition, these resin films may also be laminated bodies composed of two or more resins.

In the example shown in FIG. 1 , the roll packaging body 100, in a state where the sanitary tissue roll 10 is contracted and packaged, has the upper side in the vertical direction (Z direction) as the upper side TS and the lower side as the lower side US.

The sanitary tissue roll 10 is formed by rolling a sanitary tissue roll into a roll shape (hereinafter, sometimes referred to as a roll body or a roll). In this embodiment, a toilet paper roll of a toilet paper roll body is used as an example of the sanitary tissue roll 10.

In addition, the form of the sanitary tissue paper constituting the roll is not limited to toilet paper, and can also be applied to, for example, kitchen paper, paper towels, facial tissues, etc. The use of sanitary tissue paper is not particularly limited, and can also be applied to any use of industrial use, household use, and portable use.

As shown in FIG. 2 , the sanitary tissue roll 10 is formed by rolling (wrapping) a long sanitary tissue (toilet paper in this embodiment) 12 around a hollow core 11. The sanitary tissue roll (toilet paper roll) 10 has a pair of end faces 10A, 10B and a peripheral surface 10C. The sanitary tissue 12 constituting the roll 10 has one end 12A in the longitudinal direction exposed on the peripheral surface 10C of the roll 10, and the other end (not shown) in the longitudinal direction is bonded to the hollow core 11.

The size of the sanitary tissue roll 10 is not particularly limited, and its vertical dimension (Z direction) (roll width) is preferably 85 mm or more and 300 mm or less, and its horizontal dimension (X direction or Y direction) (roll diameter) is preferably 80 mm or more and 130 mm or less (see FIG. 2 ).

The sanitary tissue 12 constituting the roll 10 has a width of 85 mm or more and 300 mm or less. The sanitary tissue 12 has a winding length of 20 m or more and 200 m or less, and a winding density of 0.50 m/cm ² or more and 3.50 m/cm ² or less.

The number of plies of the sanitary tissue paper 12 is not particularly limited, and can be one or more plies, preferably one or two plies (two sheets stacked).

The material of the sanitary tissue 12 is not particularly limited, and for example, paper, nonwoven fabric, or cloth can be used. In addition, the sanitary tissue 12 uses base paper with pulp as the main raw material. The pulp composition can use a known composition in sanitary tissue. For example, the mixing ratio of the pulp can be set to 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass.

The pulp composition of the sanitary tissue 12 is not particularly limited. For example, softwood pulp such as NBKP (softwood kraft pulp) and NUKP (softwood unbleached pulp) and broadleaf pulp such as LBKP (broadleaf kraft pulp) and LUKP (broadleaf unbleached pulp) can be used at any ratio.

In the pulp composition of the sanitary tissue 12, the ratio of broadleaf pulp to coniferous pulp is not limited, but is preferably 10:90 to 80:20, and more preferably a pulp composition in which the ratio of coniferous pulp to broadleaf pulp is higher. In addition, the pulp contained in the sanitary tissue 12 may also be waste paper pulp.

The basis weight (mass per square meter) of the sanitary tissue 12 is not particularly limited. Corresponding to the number of layers, when it is paper, it is 5 g/ ^m2 or more and 80 g/ ^m2 or less, preferably 10 g/ ^m2 or more and 60 g/ ^m2 or less, and more preferably 10 g/ ^m2 or more and 45 g/ ^m2 or less. Moreover, when it is non-woven fabric, it is expected to be 20 g/ ^m2 or more and 100 g/ ^m2 or less. In addition, the basis weight (mass per square meter) indicates the mass per unit area of the paper measured based on the provisions of JIS P 8124:2011.

The thickness (paper thickness) of the sanitary tissue 12 is not particularly limited, and refers to the paper thickness measured based on the provisions of JIS P 8118: 1998. For example, when the sanitary tissue 12 is paper, each two layers are 50 μm or more and 200 μm or less, preferably 60 μm or more and 150 μm or less, and more preferably 80 μm or more and 140 μm or less.

Furthermore, embossing may be performed on the sanitary tissue 12. This embossing can be performed by a known embossing method.

The hollow core 11 is a cylindrical winding core with the sanitary tissue 12 wound in the circumferential direction (R direction) (see FIG. 2 ). The hollow core 11 also includes a structure in which there is no winding core (coreless structure). The material of the hollow core 11 is not particularly limited, and paper, resin, etc. can be used.

The shape of the hollow core 11 is not particularly limited. For example, when the hollow core 11 is a paper tube, it can be made of a single layer of thick paper or a plurality of layers of thick paper, or a coated thick paper base paper which has been printed on the thick paper and coated with a deodorant in advance. In addition, the winding method of the paper tube is not particularly limited, and it can be any method such as a flat-rolled paper tube, a spirally wound paper tube (so-called obliquely wound paper tube), etc.

The size of the hollow core 11 is not particularly limited. For example, the length of the long side of the hollow core 11 is the same as the roll width of the roll 10 (85 mm or more and 300 mm or less). In addition, the diameter of the hollow core 11 in the diameter direction (X direction or Y direction) is 33 mm or more and 50 mm or less, preferably 35 mm or more and 45 mm or less (see FIG. 2 ).

There is no limit to the number of multiple sanitary tissue rolls 10 that can be packaged in the roll packaging body 100. For example, when the sanitary tissue roll 10 is a toilet paper roll, more than 2 and less than 64 toilet paper rolls can be accommodated, preferably more than 4 and less than 40, and more preferably more than 8 and less than 36.

In this embodiment, the packaging mode of the plurality of sanitary tissue rolls in the roll packaging body 100 is not particularly limited, and a packaging as an aggregate can be obtained, and the aggregate is arranged in at least 2 rows and 2 columns in the radial direction (X direction and Y direction) and is stacked in at least 2 layers in the axial direction (Z direction).

Here, the axial direction refers to the axial direction (Z direction) passing through the center of the circumferential direction (R direction) of the sanitary tissue roll 10. The radial direction refers to the directions (X direction and Y direction) orthogonal to the axial direction (Z direction). "Stacking" means stacking the sanitary tissue rolls 10 in the vertical direction (Z direction) of the roll package 100 so that the end faces 10A of the two sanitary tissue rolls 10 face each other (Figures 1 and 3).

A "row" refers to a set of sanitary tissue rolls 10 whose side surfaces (peripheral surfaces) 10C face each other in the transverse direction or left-right direction (in this embodiment, the X direction) of the roll packaging body 100 among the plurality of sanitary tissue rolls 10 constituting the roll packaging body 100. A "column" refers to a set of sanitary tissue rolls 10 whose side surfaces (peripheral surfaces) 10C face each other in the longitudinal direction (front-rear direction) of the roll packaging body 100 among the plurality of sanitary tissue rolls 10 constituting the roll packaging body 100.

For example, when there are 18 toilet paper rolls 10 to be packaged (18 rolls), the toilet paper rolls 10 are packaged in 3 rows, 3 columns, and 2 layers. Also, when there are 32 toilet paper rolls 10 (32 rolls), the toilet paper rolls 10 are packaged in 4 rows, 4 columns, and 2 layers. In this embodiment, 18 toilet paper rolls (sanitary paper rolls) 10 are packaged so that the peripheral surfaces 10C overlap each other in the left-right direction (X direction) and the front-back direction (Y direction), and the end surfaces 11A, 11B overlap each other in the up-down direction (Z direction) ( FIG. 1 ).

The tray 20 is an example of a tray member constituting the roll packaging body 100 of the present embodiment. The tray 20 is made of paper and preferably cardboard. There is no particular limitation on the cardboard, and examples include single-faced cardboard, single-layer cardboard, double-layer cardboard, and triple-layer cardboard. That is, the ratio of paper in the tray 20 is 100%. In addition, in the tray 20, thick paper can also be used instead of cardboard.

The pulp composition of thick paper is not particularly limited, and for example, the pulp mixing ratio can be set to 50 mass % or more, preferably 90 mass % or more, and more preferably 100 mass %. For example, thick paper uses coated cardboard made of base paper pulp, waste paper pulp, etc.

In addition, the basis weight of the thick paper is not particularly limited, but from the viewpoint of ensuring sufficient strength to withstand use, the basis weight of the thick paper is 120 g/m ² or more and 1000 g/m ² or less, preferably 230 g/m ² or more and 900 g/m ² or less, and more preferably 270 g/m ² or more and 800 g/m ² or less. In addition, here, the basis weight is measured based on the provisions of JIS P 8124 (2011).

The thickness of the thick paper is not particularly limited, and the paper thickness measured in the environment of JIS P 8111 (1998) can be adopted. For example, when the thick paper is coated paper, the paper thickness of the thick paper can be set to be greater than 0.1 mm and less than 3 mm, preferably greater than 0.2 mm and less than 2 mm, and more preferably greater than 0.3 mm and less than 1.5 mm.

The tray 20 is arranged at the lower side AU of the roll assembly AG to accommodate a part of the roll assembly AG. In this embodiment, a part of the end surface 10B side of the 9 sanitary tissue rolls 10 of the first layer of the roll assembly AG is accommodated in the tray 20, and the roll assembly AG is a roll assembly AG in which 18 sanitary tissue rolls 10 are stacked in two layers with 9 rolls per layer (Figure 3).

The tray 20 may be in a pre-tray form, or may be formed of a sheet member whose peripheral portion is bent when the roll aggregate AG is shrunk and packaged (see FIG. 8 ).

The shrink film 30 is an example of a shrink film in the roll packaging body, and is formed by shrink packaging the roll aggregate AG. The shrink film 30 covers the roll aggregate AG from the outer side of the pallet 20. In this embodiment, in a state where a part of the roll aggregate AG is accommodated in the pallet 20, the roll aggregate AG and the pallet 20 accommodating the part of the roll aggregate AG are shrink packaged together by the shrink film 30 (FIG. 1).

In the roll packaging body 100 of the first embodiment, it is preferable that an anti-slip agent is added to the shrink film 30. Here, the anti-slip agent is an additive that increases the friction coefficient of the surface (the outer surface 31 of the shrink film 30) of the shrink film 30. In addition, the outer surface 31 of the shrink film 30 refers to the outer side of the shrink film 30.

In this embodiment, the anti-slip agent is contained in advance in the resin forming the shrink film 30. In addition, the anti-slip agent layer can also be formed by applying the anti-slip agent to the shrink film 30 after shrink packaging.

In this embodiment, the static friction coefficient of the outer surface 31 of the shrink film 30 is 0.2 or more, preferably 0.4 or more, and more preferably 0.6 or more. Here, the static friction coefficient represents the ratio of the maximum friction force measured based on the provisions of JIS P 8147:2010 to the vertical resistance.

The upper limit of the static friction coefficient is not particularly limited, but is 2.0 or less, preferably 1.8 or less, and more preferably 1.5 or less from the viewpoint of operability during storage or transportation of the roll packaging body.

As described above, in the roll packaging body 100 of the first embodiment, the tray 20 that accommodates a part of the roll aggregate AG is made of paper, and the roll aggregate AG is shrink-wrapped together with the tray 20, so that the amount of resin used in the roll packaging body 100 can be reduced. In addition, in the first embodiment, a plurality of sanitary tissue rolls 10 are packaged only with the paper tray 20 and the shrink film, so that overpacking can be avoided (Figure 1).

Furthermore, in the first embodiment, by placing the tray 20 on the lower surface AU of the roll aggregate AG, a portion of the roll aggregate AG accommodated in the tray 20 can be protected from the contraction caused by the contraction of the shrinkage package. Therefore, it is possible to prevent the end surface 10B of the sanitary tissue roll 10 and the corner C2 connected to the cross section from being wrinkled or deformed, and the end surface 10B and the corner C2 are located on the lower surface AU side of the roll aggregate AG after packaging (FIG. 1, FIG. 2).

In the first embodiment, a tray 20 is arranged on the lower surface AU of the roll assembly AG to accommodate a part of the roll assembly AG, thereby reinforcing the lower surface US of the roll packaging body 100 which is most likely to bear the weight of the roll assembly AG. In this way, the overall packaging strength of the roll packaging body 100 is improved, so the packaging capacity of the sanitary tissue roll 10 in the roll packaging body 100 can be increased (Figure 1).

Furthermore, in the first embodiment, the roll aggregate AG is covered with a shrink film from the outer side of the tray 20, so that the roll aggregate AG is not easily displaced during shrink packaging. Therefore, in the first embodiment, stable shrink packaging can be performed (Figures 1 and 3).

In addition, as described above, in the first embodiment, the tray 20 is formed of a sheet member whose peripheral portion is bent during shrink packaging, thereby enabling the sheet member disposed on the lower surface AU of the roll aggregate AG to be transformed into the tray 20 simultaneously with the shrink packaging. Therefore, in this embodiment, even if the tray 20 is not prepared in advance before the shrink packaging, the roll packaging body can be formed in a state where the tray 20 is disposed on the lower surface AU of the roll aggregate AG.

As described above, in the first embodiment, an anti-slip agent is added to the shrink film 30, so that when a plurality of roll packaging bodies 100 are stacked up and down, friction is generated between the two stacked roll packaging bodies 100, making it difficult for them to slide against each other. Therefore, when the roll packaging bodies 100 are stored or transported (for example, when a plurality of roll packaging bodies 100 are stacked on a pallet P), it is difficult for the goods to fall off (Figure 4).

In the first embodiment, the static friction coefficient of the outer surface 31 of the shrink film 30 is greater than 0.2, thereby increasing the friction between the two roll packaging bodies 100 stacked up and down. Therefore, in the first embodiment, when a plurality of roll packaging bodies 100 are stored or transported, it is possible to prevent the goods from being scattered (FIG. 4).

<Second embodiment> Fig. 5 is a diagram showing a roll packaging body 200 of the second embodiment. In addition, for the parts in Fig. 5 that are common with the first embodiment (Fig. 1), the same or corresponding symbols as those in Fig. 1 are attached and the description is omitted.

The roll packaging body 200 of the second embodiment has a sheet material (FIG. 3 and FIG. 5) disposed on the upper surface AT of the roll assembly AG and in contact with the end surface 10A of the sanitary tissue roll 10. Furthermore, the roll assembly AG is covered with a shrink film 30 from the outer side of the sheet material.

In the second embodiment, a paper sheet 40 is disposed on the upper surface AT of the roll aggregate AG, and the shrink film 30 covers the roll aggregate AG from the outer side of the sheet 40 while the sheet 40 contacts the end surface 10A of the sanitary tissue roll 10 ( FIG. 5 ).

The sheet 40 is made of paper, preferably cardboard. The cardboard is not particularly limited, and examples include single-sided cardboard, single-layer cardboard, double-layer cardboard, triple-layer cardboard, etc. That is, the sheet 40 has a paper ratio of 100%. In addition, thick paper can also be used in place of cardboard in the sheet.

The pulp composition of thick paper is not particularly limited, and for example, the mixing ratio of the pulp can be set to 50 mass % or more, preferably 90 mass % or more, and more preferably 100 mass %. For example, thick paper uses copperplate paper made of base paper pulp, waste paper pulp, etc. as raw materials.

In addition, the basis weight of the thick paper is not particularly limited, but from the viewpoint of ensuring sufficient strength to withstand use, the basis weight of the thick paper is 120 g/m ² or more and 1000 g/m ² or less, preferably 230 g/m ² or more and 900 g/m ² or less, and more preferably 270 g/m ² or more and 800 g/m ² or less. In addition, here, the basis weight is measured based on the provisions of JIS P 8124 (2011).

The thickness of the thick paper is not particularly limited, and the paper thickness measured in the environment of JIS P 8111 (1998) can be adopted. For example, when the thick paper is coated paper, the paper thickness of the thick paper can be set to be greater than 0.1 mm and less than 3 mm, preferably greater than 0.2 mm and less than 2 mm, and more preferably greater than 0.3 mm and less than 1.5 mm.

In addition, the sheet 40 may be formed of a sheet member whose peripheral portion is bent when the roll aggregate AG is shrunk and packaged as described later (see FIG. 8 ).

In the roll package 200 of the second embodiment, the upper surface AT of the roll aggregate AG is covered with a sheet 40. In the second embodiment, when viewed from above, the area of the sheet 40 is the same as or larger than the area of the upper surface AT of the roll aggregate AG, and the upper surface AT of the roll aggregate AG is covered by the sheet 40 to hide it ( FIG. 5 ). In the second embodiment, the sheet 40 is made of the same material as the tray 20, but the sheet 40 may be made of a different material from the tray 20.

In the roll packaging body 200 of the second embodiment, the sheet 40 that contacts the end surface 10A of the sanitary tissue roll 10 is made of paper, and only the roll aggregate AG is shrink-packaged together with the above-mentioned tray 20 and the sheet 40, so that the amount of resin used in the roll packaging body 200 can be reduced. In addition, since a plurality of sanitary tissue rolls 10 are packaged only with the paper tray 20, the paper sheet 40 and the shrink film 30, overpackaging can be avoided (FIG. 5).

Furthermore, in the second embodiment, the sheet 40 disposed on the upper surface AT of the roll aggregate AG can protect the end surface 10A of the sanitary tissue roll 10 in contact with the sheet 40 from being contracted by the contraction of the shrink film 30. Therefore, it is possible to prevent the end surface 10A of the sanitary tissue roll 10, which is located on the upper surface AT side of the roll aggregate AG after packaging, from being wrinkled or deformed (FIG. 5).

Furthermore, in the second embodiment, the sheet 40 contacting the end surface 10A of the sanitary tissue roll 10 is arranged on the upper surface AT of the roll assembly AG, thereby reinforcing the upper surface TS of the roll packaging body 200 in the contracted packaging state. In this way, the packaging strength of the roll packaging body 200 is further improved, and the packaging capacity of the sanitary tissue roll 10 in the roll packaging body 200 can be further increased (Figure 5).

In the roll packaging body 200 of the second embodiment, the upper surface AT of the roll aggregate AG is covered with the sheet 40, thereby protecting the end surface 10A of the sanitary tissue roll 10 in contact with the sheet 40 and the corner C1 continuous with the end surface 10A from the contraction caused by the contraction of the shrink film 30. Therefore, the end surface 10A of the sanitary tissue roll 10 and the corner C1 continuous with the end surface 10A can be prevented from being wrinkled and deformed. The end surface 10A and the corner C1 are located on the upper surface AT side of the roll aggregate AG after packaging (Figures 2, 3, and 5).

In addition, as described above, in the second embodiment, the sheet 40 is formed of a sheet member whose peripheral portion is bent when shrinking and packaging, so that the sheet 40 disposed on the top surface AT of the roll aggregate AG can cover the entire top surface AT of the roll aggregate AG and the side surface AS close to the top surface AT while shrinking and packaging. Therefore, in the second embodiment, the corners on the top surface AT side of the roll aggregate AG can be protected by the sheet 40 (refer to FIG. 8 ).

<Third embodiment> Fig. 6 is a diagram showing a roll package 300 of the third embodiment. In addition, for the parts in Fig. 6 that are common with the first embodiment (Fig. 1), the same or corresponding symbols as those in Fig. 1 are attached and the description is omitted.

In the roll packaging body 300 of the third embodiment, perforations 50 are formed in the shrink film (FIG. 6). The perforations are intermittent perforation lines (FIG. 6) in which the cuts C and the connection T (the uncut portion between two cuts C) are alternately arranged and the cuts C on both sides become continuous cuts when the connection T is broken.

In the third embodiment, the shrink film 30 on the four side surfaces SS of the packaging roll 300 is formed with holes 50 in the portions not associated with the tray 20 ( FIG. 6 ).

In addition, the portion of the shrink film 30 formed with the holes 50 is not limited to the four sides SS of the roll packaging body 300, and it is sufficient as long as it is formed on at least one side SS of the roll packaging body 300. In addition, the holes 50 may not be continuous on at least one side SS of the roll packaging body 300, but may be formed on each of two opposing side surfaces SS.

In the roll packaging body 300 of the third embodiment, a hole 50 is formed in the shrink film 30, and the roll packaging body 300 can be opened through the hole 50. In addition, the cutout C of the hole 50 functions as a hole for exhaust during shrink packaging, so the shrink film 30 can be easily shrunk (Figure 6).

＜Fourth Implementation Form＞

Fig. 7 is a diagram showing a roll package 400 of a fourth embodiment. In addition, for the parts in Fig. 7 that are common to the first embodiment (Fig. 1), the second embodiment (Fig. 5), and the third embodiment (Fig. 6), the same or corresponding symbols as those in Fig. 1 are added and the description is omitted.

In the roll packaging body 400 of the fourth embodiment, holes 60 are formed in the shrink film 30, but at least a portion of the holes 60 is formed in a portion 30A of the shrink film 30 covering the sheet 40 and/or a portion 30B of the shrink film 30 covering the tray 20 (Figure 7).

In the fourth embodiment, a portion 61 of the hole 60 is formed in a portion 30A of the shrink film 30 on the upper surface TS of the wrapping roll 400. Also, a portion 62 of the hole 60 is formed in a portion 30B of the shrink film 30 on the lower surface US of the wrapping roll 400 (FIG. 7).

In the fourth embodiment, the shrink film 30 is provided with holes 60, so that the shrink film 30 can be easily shrunk during shrink packaging as described above. However, when the sanitary tissue roll 10 to be packaged contains (is added with) fragrances and moisturizing components, the added fragrances and moisturizing components are likely to leak out of the roll packaging body 400 from the cuts of the holes 60, which may cause the functions of the fragrances and moisturizing components added to the sanitary tissue roll 10 to be reduced.

However, in the fourth embodiment, as described above, in the portion of the hole 60 (a portion of the hole 61, 62, 63, 64) formed in a portion of the shrink film 30 of the covering sheet 40 and/or the tray 20 (a portion 31A of the covering sheet 40, a portion 31B of the covering tray 20), the fragrance and moisturizing component added to the packaged sanitary tissue roll 10 are blocked by the sheet 40 and/or the tray 20 and are difficult to leak out. Therefore, in the fourth embodiment, even if the shrink film 30 has the hole 60, the function of the fragrance and moisturizing component added to the sanitary tissue roll 10 can be maintained.

Furthermore, as described above, the sheet 40 is used to cover the entire top surface AT and the side surface SS close to the top surface AT of the roll aggregate AG, and in the case where a part of the hole is formed in a part of the shrink film 30 covering the sheet as in the fourth embodiment, the sheet 40 is arranged between a part of the hole 60 and the roll aggregate AG (FIG. 8). Therefore, in the fourth embodiment, the folded sheet 40 makes it difficult for the fragrance and moisturizing component added to the sanitary tissue roll 10 to leak out even from the entire top surface AT and the side surface SS close to the top surface AT of the roll aggregate AG.

The embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments, and various changes and modifications can be made within the scope of the invention described in the patent application.

The following is a note on the preferred aspects of the present invention.

The first aspect of the present invention is a roll packaging body, which is a roll packaging body formed by shrinking and packaging a roll assembly having a plurality of sanitary tissue rolls accumulated therein, and comprises: a paper tray member, which is arranged below the aforementioned roll assembly to accommodate a portion of the aforementioned roll assembly; and a shrink film, which covers the aforementioned roll assembly from the outer side of the aforementioned tray member.

In the first embodiment, the tray member that accommodates a part of the roll assembly is made of paper, and only the roll assembly and the tray member are shrink-wrapped together, so the amount of resin used in the roll packaging body can be reduced. In addition, in the first embodiment, a plurality of sanitary tissue rolls are packaged only with a paper tray member and a shrink film, so overpacking can be avoided.

In the first embodiment, the tray member disposed below the roll assembly can protect a portion of the roll assembly contained in the tray member from the contraction caused by the contraction of the shrinkage package. Therefore, it is possible to prevent the end surface of the sanitary tissue roll and the corner portion of the cross section from being wrinkled or deformed, and the end surface and the corner portion are located on the lower side of the roll assembly after packaging.

In the first embodiment, a tray member is arranged below the roll assembly to accommodate a portion of the roll assembly, thereby reinforcing the bottom of the roll packaging body which is most likely to bear the weight of the roll assembly. This improves the packaging strength of the roll packaging body as a whole, so that the packaging capacity of the sanitary tissue roll in the roll packaging body can be increased.

Furthermore, in the first embodiment, the roll assembly is covered with a shrink film from the outer side of the tray member, so that the roll assembly is not easily deviated during shrink packaging. Therefore, in the first embodiment, stable shrink packaging can be performed.

The second aspect of the present invention is a roll packaging body described in the first aspect, which has a paper sheet arranged on the above-mentioned roll assembly and in contact with the end surface of the above-mentioned sanitary tissue roll; and the above-mentioned roll assembly is covered with the above-mentioned shrink film from the outer side of the above-mentioned sheet.

In the second aspect, the sheet material contacting the end surface of the sanitary tissue roll is made of paper, and only the roll assembly is shrink-wrapped together with the above-mentioned tray member and the sheet material, so the amount of resin used in the roll packaging body can be reduced. In addition, since a plurality of sanitary tissue rolls are packaged only with a paper tray member, a paper sheet material and a shrink film, overpackaging can be avoided.

In the second embodiment, the sheet disposed on the upper surface of the roll assembly can protect the end surface of the sanitary tissue roll that contacts the sheet from the contraction caused by the contraction of the shrink film. Therefore, it is possible to prevent the end surface of the sanitary tissue roll from being wrinkled or deformed, and the end surface is located on the upper side of the roll assembly after packaging.

Furthermore, in the second embodiment, the sheet material contacting the end surface of the sanitary tissue roll is arranged on the upper surface of the roll assembly, thereby reinforcing the upper surface of the roll packaging body in the contracted packaging state. In this way, the packaging strength of the roll packaging body is further improved, and the packaging capacity of the sanitary tissue roll in the roll packaging body can be further increased.

A third aspect of the present invention is the roll packaging body described in the second aspect, wherein the upper surface of the roll assembly is covered with the sheet material.

In the third aspect, the top of the roll assembly is covered with a paper sheet, so that the end surface of the sanitary tissue roll in contact with the sheet and the corner portion connected to the end surface can be protected from the contraction caused by the contraction of the shrink film. Therefore, the end surface of the sanitary tissue roll and the corner portion connected to the end surface can be prevented from being wrinkled and deformed, and the end surface and the corner portion are located on the top side of the roll assembly after packaging.

A fourth aspect of the present invention is the roll packaging body described in any one of the first to third aspects, wherein holes are formed in the shrink film.

In the fourth aspect, a hole is formed in the shrink film, through which the roll packaging body can be opened. In addition, the cut of the hole functions as a hole for exhaust during shrink packaging, so the shrink film can be easily shrunk.

The fifth aspect of the present invention is the roll packaging body described in the second aspect, wherein holes are formed in the aforementioned shrinkage film, and at least a portion of the aforementioned holes are formed in a portion of the aforementioned shrinkage film before covering the aforementioned sheet material and/or a portion of the aforementioned shrinkage film before covering the aforementioned tray component.

In the fifth aspect, holes are formed in the shrink film, thereby facilitating the shrink film to shrink during shrink packaging as described above. However, when the sanitary tissue roll to be packaged contains (is added with) fragrances and moisturizing ingredients, the added fragrances and moisturizing ingredients are likely to leak out of the roll packaging body through the cuts of the holes, which may cause the functions of the fragrances and moisturizing ingredients added to the sanitary tissue roll to be reduced.

However, in the fifth aspect, as described above, in the portion of the holes formed in a portion of the shrink film covering the sheet and/or the tray member, the fragrance and moisturizing component added to the packaged sanitary tissue roll are blocked by the sheet and/or the tray member and are not easy to leak out. Therefore, in the fifth aspect, even if the shrink film has holes, the function of the fragrance and moisturizing component added to the sanitary tissue roll can be maintained.

The sixth aspect of the present invention is a roll packaging body described in any of the first to fifth aspects, wherein an anti-slip agent is added to the shrink film. In the sixth aspect, the anti-slip agent is added to the shrink film, so that when a plurality of roll packaging bodies are stacked up and down, friction is generated between the stacked two roll packaging bodies, making it difficult for them to slide against each other. Therefore, in the sixth aspect, when the roll packaging body is stored or transported, it is difficult for the goods to fall off (Figure 4).

A seventh aspect of the present invention is the roll packaging body described in any one of the first to sixth aspects, wherein the tray member is formed of a sheet member whose peripheral portion is bent when the roll assembly is shrunk and packaged.

In the seventh aspect, the tray member is formed of a sheet member that is bent during shrink packaging, so that the sheet member disposed under the roll assembly can be transformed into a tray member at the same time as the shrink packaging. Therefore, in the seventh aspect, even if the tray member is not prepared in advance before the shrink packaging, the roll packaging body can be formed in a state where the tray member is disposed under the roll assembly.

An eighth aspect of the present invention is the roll packaging body described in any one of the second to seventh aspects, wherein the sheet is composed of a sheet member whose peripheral portion is bent when the roll assembly is shrunk and packaged.

In the eighth aspect, the sheet is formed by a sheet member that is bent when shrinking and packaging, so that the sheet disposed on the top of the roll assembly can cover the entire top of the roll assembly and the side surface close to the top while shrinking and packaging. Therefore, in the eighth aspect, the corner of the top side of the roll assembly can be protected by the sheet.

In the eighth aspect, the sheet is used to cover the entire top surface and the side surface close to the top surface of the roll assembly, and when a part of the shrink film covering the sheet is formed with a part of the hole, the sheet is arranged between the part of the hole and the roll assembly. Therefore, in the eighth aspect, the fragrance and moisturizing component added to the sanitary tissue roll are not easily leaked even on the entire top surface and the side surface close to the top surface of the roll assembly by the folded sheet.

This application claims priority based on Japanese Patent Application No. 2022-138134 filed on August 31, 2022, the entire contents of which are incorporated herein by reference.

100,200,300,400: Roll packaging body TS: top US: bottom SS: side 10: sanitary tissue roll (toilet paper roll, roll) 10A,10B: end 10C: side (peripheral surface) C1,C2: corner 11: hollow core 12: sanitary tissue (toilet paper) 12A: one end AG: roll assembly AT: top AU: bottom AS: side 20: tray 21: opening 22: bottom 23: side wall (peripheral part) 30: shrink film 30A,30B: part 31: outside 31A: part of covering sheet 31B: Covering part of the tray member 40: Sheet 50,60: Eyelets 61,62,63,64: Part P: Pallet C: Cutting T: Connection

FIG. 1 is a diagram showing a roll packaging body of a first embodiment. FIG. 2 is a diagram showing a toilet tissue roll. FIG. 3 is a diagram showing a state where a roll assembly is stored in a tray member (a state before shrinkage and packaging). FIG. 4 is a diagram showing a state where a plurality of roll packaging bodies are stacked. FIG. 5 is a diagram showing a roll packaging body of a second embodiment. FIG. 6 is a diagram showing a roll packaging body of a third embodiment. FIG. 7 is a diagram showing a roll packaging body of a fourth embodiment. FIG. 8 is a diagram showing a roll packaging body in which a sheet is formed by a sheet member with a folded peripheral portion in FIG. 7.

Domestic storage information (please note the order of storage institution, date, and number) None

Overseas storage information (please note the storage country, institution, date, and number in order) None

100: Roll packaging body

TS: Above

US: Below

10: Toilet paper roll (toilet paper roll, roll)

10A, 10B: End face

10C: Side (circumference)

AG: Roller aggregate

AT:Above

AU: Below

20: Tray

21: Open mouth

22: Bottom

23: Side wall (periphery)

30: Contraction membrane

31: Outside

Claims (8)

A roll packaging body is a roll packaging body formed by shrinking and packaging a roll assembly having a plurality of sanitary tissue rolls, and comprises: a paper tray member disposed below the roll assembly to accommodate a portion of the roll assembly; and, a shrink film covering the roll assembly from the outer side of the tray member. The roll packaging body as described in claim 1, wherein the roll packaging body has a paper sheet disposed on the roll assembly and in contact with the end surface of the sanitary tissue roll; and the roll assembly is covered with the shrink film from the outer side of the sheet. A roll packaging body as described in claim 2, wherein the upper surface of the roll assembly is covered with the sheet material. The roll packaging body as described in claim 1, wherein holes are formed in the aforementioned shrink film. A roll packaging body as described in claim 2, wherein holes are formed in the aforementioned shrinkage film, and at least a portion of the aforementioned holes are formed in a portion of the aforementioned shrinkage film before covering the aforementioned sheet and/or a portion of the aforementioned shrinkage film before covering the aforementioned pallet component. A roll packaging body as described in any one of claims 1 to 5, wherein an anti-slip agent is added to the aforementioned shrink film. A roll packaging body as described in any one of claims 1 to 5, wherein the aforementioned pallet member is composed of a sheet member whose peripheral portion is bent when the aforementioned roll assembly is shrunk and packaged. A roll packaging body as described in claim 2, 3 or 5, wherein the aforementioned sheet is composed of a sheet member whose peripheral portion is bent when the aforementioned roll assembly is shrunk and packaged.