Packaging

Abstract

To improve bottom surface wear resistance and waterproofness at low cost and easily in a package in which rolls or laminates of sanitary tissue paper are packaged in bulk with a paper material.SOLUTION: A package 1, in which a plurality of roll-shaped sanitary tissue papers or sanitary tissue paper laminates are packaged in bulk with a packaging paper, has a heat seal layer 12B for bottom surface seal on a part of an external surface of the packaging paper, and coats at least a part of a bottom surface 10B withy the heat seal layer 12 for bottom surface seal.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a package in which a roll of sanitary thin paper or a laminate of sanitary thin papers is wrapped in a paper material. [Background technology]

[0002] Conventionally, packages have been known in which sanitary thin paper such as toilet paper or kitchen paper is rolled up (hereinafter also referred to as "rolled sanitary thin paper" or "rolled sanitary thin paper"), or laminates of sanitary thin paper such as tissue paper or wipers are bundled together and wrapped in film; such packages are described, for example, in Patent Document 1 and Patent Document 2.

[0003] In recent years, the problem of plastic waste has become more serious worldwide, and it is desirable to change packaging materials from plastic to other materials in order to improve the global environment. For example, Patent Documents 3 and 4 propose changing the packaging material from plastic to paper even in a package in which rolls or laminates of sanitary tissue paper are packaged together. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2004-269010 A [Patent Document 2] JP 2016-188092 A [Patent Document 3] Patent Publication No. 2021-054436 [Patent Document 4] Patent Publication No. 2021-070501 Summary of the Invention [Problem to be solved by the invention]

[0005] However, simply changing the packaging material from plastic to paper may cause the bottom of the package to be rubbed and accidentally torn when the package is transported, or water adhering to the floor may seep in through the bottom of the package and soil the contents when the package is stored on the floor, etc. Therefore, there is still room for improvement in the structure of the package from the viewpoint of the abrasion resistance and waterproofness of the bottom of the package.

[0006] The present invention aims to easily and at low cost improve the abrasion resistance and waterproofness of the bottom surface of a package in which a roll or stack of sanitary thin paper is bundled together and wrapped in paper material. [Means for solving the problem]

[0007] The packaging body according to the present invention is a packaging body in which a plurality of roll-shaped sanitary tissue papers or sanitary tissue paper laminates are bundled together and wrapped in wrapping paper, characterized in that a portion of the outer surface of the wrapping paper has a heat seal layer for bottom sealing, and at least a portion of the bottom surface is covered by the heat seal layer for bottom sealing.

[0008] With this configuration, at least a portion of the bottom surface is covered with the heat seal layer for bottom sealing, so that the heat seal layer for bottom sealing effectively contributes to improving the abrasion resistance and waterproofness of the bottom surface, making it possible to easily improve the abrasion resistance and waterproofness of the bottom surface at low cost.

[0009] The package according to the present invention is characterized in that the entire bottom surface is covered with the heat seal layer for sealing the bottom surface.

[0010] With this configuration, the entire bottom surface is covered with the heat seal layer for bottom sealing, so that the heat seal layer for bottom sealing effectively contributes to improving the abrasion resistance and waterproofness of the bottom surface, thereby making it possible to further improve the abrasion resistance and waterproofness of the bottom surface at low cost and simply.

[0011] Furthermore, the package according to the present invention is characterized in that the corner between the bottom surface and the peripheral surface is covered over its entire circumferential area with the heat seal layer for bottom sealing.

[0012] With this configuration, the corners between the bottom surface and the peripheral surface are covered over their entire circumferential area with the heat seal layer for sealing the bottom surface, so that the corners between the bottom surface and the peripheral surface, which are relatively prone to tearing, can be reinforced easily and at low cost with the heat seal layer.

[0013] In addition, the package according to the present invention is characterized in that a part of the outer surface of the wrapping paper has a heat seal layer for sealing the top surface, and at least a part of the top surface is covered by the heat seal layer for sealing the top surface.

[0014] With this configuration, since at least a part of the top surface is covered with the heat seal layer for sealing the top surface, the heat seal layer for sealing the top surface contributes to improving the wear resistance and waterproofing of the top surface, and the wear resistance and waterproofing of the top surface can be improved easily and at low cost, which is particularly effective when multiple packages are stored stacked together.

[0015] The package according to the present invention is characterized in that the top surface is covered over its entire area with the heat seal layer for sealing the top surface.

[0016] With this configuration, the entire top surface is covered with the heat seal layer for sealing the top surface, so that the heat seal layer for sealing the top surface effectively contributes to improving the abrasion resistance and waterproofness of the top surface, and the abrasion resistance and waterproofness of the top surface can be further improved at low cost and easily.

[0017] The package according to the present invention is characterized in that the corner between the top surface and the peripheral surface is covered over its entire circumferential area with the heat seal layer for sealing the top surface.

[0018] With this configuration, the corners between the top surface and the peripheral surface are covered over their entire circumferential area with the heat seal layer for sealing the top surface, so that the corners between the top surface and the peripheral surface, which are relatively prone to tearing, can be reinforced at low cost and easily with the heat seal layer for sealing the top surface.

[0019] The packaging material according to the present invention has a basis weight of 30 g / m 2 ~65g / m 2 It is characterized in that:

[0020] This configuration makes the wrapping paper less likely to tear, provides good water resistance, and improves the sealing strength of the bottom and top surfaces. Effect of the Invention

[0021] According to the present invention, at least a portion of the bottom surface of the package is covered with a heat seal layer for bottom sealing, so that the heat seal layer for bottom sealing effectively contributes to improving the abrasion resistance and waterproofness of the bottom surface of the package, thereby making it possible to easily improve the abrasion resistance and waterproofness of the bottom surface of the package at low cost. [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is an overall oblique view of a package in which multiple rolls of sanitary thin paper are caramel-packaged according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view of the bottom surface of a package according to one embodiment of the present invention. [Diagram 3] This is a plan view of a packaging bag of a packaging body according to one embodiment of the present invention, viewed from the outer surface of the wrapping paper after the heat seals at the top and bottom of the packaging body and the heat seals on the glue tab have been peeled off and the bag is unfolded. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The embodiment of the package according to the present invention will be described in detail with reference to Figures 1 to 3. However, the present invention is not limited to this embodiment.

[0024] As described above, the sanitary thin paper according to the present invention includes toilet paper, kitchen paper, tissue paper, wipers, etc., and in the description of this specification and claims, "rolled sanitary thin paper" refers to sanitary thin paper such as toilet paper or kitchen paper rolled into a roll, and "sanitary thin paper laminate" refers to sanitary thin paper such as tissue paper, wipers, etc. that is folded and laminated. Hereinafter, in this embodiment, a form in which rolled sanitary thin paper is caramel-wrapped in a paper packaging bag (hereinafter also referred to as "wrapping paper") will be described.

[0025] In addition, in the present specification and claims, the terms "top surface" and "bottom surface" refer to the surfaces defined by the packaging bag in which the rolled sanitary tissue paper or the sanitary tissue paper laminate is packaged and exposed to the outside. However, these terms are used merely for convenience and do not, of course, define absolute positions in the direction of gravity. The same applies to terms such as "top" and "bottom."

[0026] Furthermore, in this specification, the claims, and the drawings, the "height direction," the "width direction," and the "length direction" are perpendicular to each other, and the "roll parallel direction" corresponds to either the above-mentioned "width direction" or "length direction."

[0027] For ease of explanation, the overall perspective view of FIG. 1 shows the contents in a see-through state.

[0028] Fig. 1 is an overall perspective view of a package 1 in which multiple rolled sanitary thin papers 2 are caramel-wrapped according to one embodiment of the present invention, Fig. 2 is a plan view of the bottom of the package 1 according to this embodiment, and Fig. 3 is a plan view of a packaging bag 10 of the package 1 according to this embodiment, which has been unfolded by peeling off the heat-sealed layers 12 at the top and bottom of the package 1 and the heat-sealed layer 12 at the glue margin 11, and viewed from the outside of the package. The unfolded package in Fig. 3 is designated 10D.

[0029] The packaging body 1 according to the present invention is formed by wrapping and wrapping a plurality of roll-shaped sanitary thin papers (toilet rolls in this embodiment) 2 in a state where both end faces are aligned in a direction perpendicular to the axial direction, with a paper material (paper materials). As shown in FIG. 1, the packaging body 1 according to the present embodiment is formed by wrapping four toilet rolls 2 in two rows and two columns with a paper material. Examples of the paper material include coated paper, craft paper, and laminated paper. The paper material is obtained by papermaking a slurry containing a pulp component, which is a fiber raw material. Examples of the pulp component include wood pulp, non-wood pulp, and recycled paper pulp. In this embodiment, the paper material is a one-sided gloss paper having a gloss on the outside. A known caramel wrapping may be used for the caramel wrapping. Specifically, for example, first, the toilet roll 2 placed on the flat paper material is wrapped in a roll, and the overlapping parts in the rolling direction are bonded via a heat seal layer described later. Next, the excess portion extending beyond the end face position of the sanitary paper roll 2 is folded toward the end face side of the sanitary paper roll 2 (folded in mountain folds and valley folds along the mountain fold lines and valley fold lines indicated by the symbols UFL and DFL in FIG. 3, respectively).Then, the leading edge portions of the triangular or trapezoidal pieces formed during folding are bonded together to cover the upper and lower end faces of the toilet roll 2.A known device can be used as a device for performing this type of caramel packaging.

[0030] In addition, the paper material in the packaging body 1 is bonded by the heat sealing method as described above. For bonding by the above method, a heat seal agent that exhibits an adhesive function when heat is applied is applied to the paper material (one or both sides of the glue tab 11 and the folded part) in advance to provide a heat seal layer. As shown in FIG. 3, the heat seal layer 12 is applied to the outer surface of the unfolded packaging paper 10D in the portion shown by diagonal hatching in the figure, that is, the glue tab 11 and the peripheral portion of the packaging paper 10D. That is, as shown in FIG. 3, the heat seal layer 12 is provided in a U-shape on the peripheral side of one surface (outer surface) of the rectangular packaging paper 10D. When the toilet roll 2 is packaged, the heat seal layer 12 exposed on the bottom surface 10B side and the top surface 10T side of the packaging body 1 is the heat seal layer 12B for sealing the bottom surface and the heat seal layer 12T for sealing the top surface, respectively, which will be described later. The material that can be used to form the heat seal layer 12 is, for example, a polyolefin resin or other thermoplastic resin.

[0031] As shown in Figures 1 to 3, the package 1 of this embodiment is a package of four toilet rolls 2 wrapped in wrapping paper, with a heat seal layer 12B for bottom sealing on part of the outer surface of the wrapping paper, and at least a part of the bottom surface 10B is covered by the heat seal layer 12B for bottom sealing.

[0032] With this configuration, at least a portion of the bottom surface 10B is covered with the heat seal layer 12B for sealing the bottom surface, so that the heat seal layer 12B for sealing the bottom surface can effectively contribute to improving the abrasion resistance and waterproofness of the bottom surface 10B.

[0033] More specifically, in this embodiment, as shown in Figs. 1 and 2, the entire bottom surface 10B is covered with a bottom-sealing heat seal layer 12B.

[0034] With this configuration, the entire area of ​​the bottom surface 10B is covered with the heat seal layer 12B for sealing the bottom surface, so that the heat seal layer 12B for sealing the bottom surface can more effectively contribute to improving the abrasion resistance and waterproofness of the bottom surface 10B.

[0035] In this embodiment, more specifically, as shown in Figures 1 to 3, the corner 10CB between the bottom surface 10B and the peripheral surface 10P is covered over its entire circumferential area by the bottom sealing heat seal layer 12B.

[0036] With this configuration, the corner 10CB between the bottom surface 10B and the peripheral surface 10P is covered over its entire circumferential area by the bottom surface sealing heat seal layer 12B, so that the corner 10CB between the bottom surface 10B and the peripheral surface 10P, which is relatively prone to tearing, can be reinforced easily and at low cost by the heat seal layer 12B. In this embodiment, the corner 10CB is an edge that defines the bottom surface 10B and the peripheral surface 10P and is linear, but in the present invention, it may be a strip having a width, that is, it may extend along the circumferential direction of the package 1 so as to protrude to the bottom surface 10B side and / or the peripheral surface 10P side. The same applies to the corner 10CT on the top surface 10T side described later.

[0037] Furthermore, in this embodiment, as shown in Figs. 1 and 3, a heat seal layer 12T for sealing the top surface is provided on a portion of the outer surface of the wrapping paper, and at least a portion of the top surface 10T is covered by the heat seal layer 12T for sealing the top surface.

[0038] With this configuration, at least a part of the top surface 10T is covered with the heat seal layer 12T for sealing the top surface, so that the heat seal layer 12T for sealing the top surface can contribute to improving the abrasion resistance and waterproofing of the top surface 10T. This is particularly effective when multiple packages 1 are stacked for storage.

[0039] More specifically, in this embodiment, as shown in Figs. 1 and 3, the top surface 10T is entirely covered with a heat seal layer 12T for sealing the top surface.

[0040] With this configuration, the entire area of ​​the top surface 10T is covered with the heat seal layer 12T for sealing the top surface, so that the heat seal layer 12T for sealing the top surface can more effectively contribute to improving the abrasion resistance and waterproofness of the top surface 10T.

[0041] More specifically, in this embodiment, as shown in Figs. 1 and 3, a corner 10CT between the top surface 10T and the peripheral surface 10P is covered over its entire circumferential area by a heat seal layer 12T for sealing the top surface.

[0042] With this configuration, the corner 10CT between the top surface 10T and the peripheral surface 10P is covered over its entire circumferential area with the heat seal layer 12T for sealing the top surface, so that the corner 10CT between the top surface 10T and the peripheral surface 10P, which is relatively prone to tearing, can be reinforced at low cost and simply with the heat seal layer 12T for sealing the top surface.

[0043] In order to obtain the effects of the present invention, the basis weight of the wrapping paper is preferably 30 g / m 2 ~65g / m 2 This configuration makes the wrapping paper less likely to tear, provides good water resistance, and improves the sealing strength of the bottom surface 10B and the top surface 10T. 2 If the basis weight is less than 65 g / m, the wrapping paper is easily torn and does not have good water resistance. 2 If it exceeds this value, the heating temperature of the heat seal layer 12 will decrease when sealing the bottom surface 10B or the top surface 10T, and good seal strength will not be obtained (seal strength will decrease).

[0044] Conventionally, a package in which a roll or laminate of sanitary thin paper is bundled and wrapped in a film has been known, but in recent years, the problem of plastic waste has become serious worldwide, and it is desired to change the packaging material from plastic to other materials in order to improve the global environment. For example, Patent Document 3 and Patent Document 4 propose changing the packaging material from plastic to paper even in a package in which a roll or laminate of sanitary thin paper is bundled and wrapped.

[0045] However, simply changing the packaging material from plastic to paper raises the risk that the bottom of the package may rub against one another during transport and be torn inadvertently, or that water or other contaminants on the floor may seep in through the bottom of the package and soil the contents when the package is placed on the floor for storage.

[0046] According to this embodiment, since at least a part of the bottom surface 10B (and top surface 10T) of the packaging body 1 is covered with the heat seal layer 12B for sealing the bottom surface (and the heat seal layer 12T for sealing the top surface), the heat seal layer 12B for sealing the bottom surface (and the heat seal layer 12T for sealing the top surface) can effectively contribute to improving the wear resistance and waterproofness of the bottom surface 10B (and top surface 10T) of the packaging body 1. In addition, generally, when the ends of the packaging paper are folded and sealed during packaging, adhesive is applied to the opposing surfaces to bond them together. In this embodiment, in one process, a heat seal layer is provided not only on the opposing surfaces but also on the exposed parts of the bottom surface 10B (and top surface 10T) of the packaging body 1, so that the wear resistance and waterproofness of the bottom surface 10B (and top surface 10T) of the packaging body 1 can be easily improved at low cost.

[0047] Furthermore, since the heat seal layer 12 is also provided at the corners 10CB, 10CT of the package 1 in one process, the abrasion resistance and waterproofness of the corners 10CB, 10CT of the package 1 can be improved easily and at low cost.

[0048] <Other> The present invention is not limited to the above-described embodiment or the modified examples described throughout the specification, and appropriate changes and modifications can be made without departing from the technical concept of the present invention.

[0049] For example, in the above embodiment and their modified examples, the heat seal layer 12 is provided on the entire surface of both the bottom surface 10B and the top surface 10T, but the present invention also allows for a configuration in which the heat seal layer 12 is provided on a part of the bottom surface 10B and the top surface 10T, and also allows for a configuration in which the heat seal layer 12 is not provided on the top surface 10T side. In addition, in the above embodiment and their modified examples, the heat seal layer 12 is provided on the corners 10CB and 10CT of the bottom surface 10B and the top surface 10T, but this is not limited to the present invention, and the heat seal layer 12 does not have to be provided on the corners 10CB and 10CT. In addition, in the above embodiment, a configuration in which multiple rolls of sanitary thin paper are caramel-wrapped has been described, but the present invention is not limited to this, and can be applied to a case in which multiple sanitary thin paper laminates are packaged in caramel packaging, and can also be applied to a case in which multiple rolls of sanitary thin paper or sanitary thin paper laminates are packaged in other forms such as gusset packaging or pillow packaging. [Explanation of symbols]

[0050] 1 package 2. Rolled sanitary tissue paper 10 packaging bags 10B Bottom 10T Top 10P peripheral surface 10CB (bottom side) corner 10CT (Top) Corner 10D Unfolded wrapping paper UFL Mountain Fold DFL Valley fold line 11 Glue allowance 12 Heat seal layer 12B Bottom seal heat seal layer 12T Heat seal layer for top seal

Claims

1. A package in which a plurality of rolled sanitary tissue papers or sanitary tissue paper laminates are bundled together and wrapped in wrapping paper, the wrapping paper having a heat seal layer for sealing a bottom surface on a portion of an outer surface thereof, and at least a portion of the bottom surface is covered by the heat seal layer for sealing a bottom surface; A package characterized in that no heat seal layer is provided on the peripheral surface except for the adhesive margin, the corners between the bottom surface and the peripheral surface, and the corners between the top surface and the peripheral surface.

2. 2. The package according to claim 1, wherein the entire area of ​​the bottom surface is covered with the heat seal layer for sealing the bottom surface.

3. 3. The package according to claim 2, wherein the heat seal layer for sealing the bottom covers the entire corner between the bottom surface and the peripheral surface in the circumferential direction.

4. 4. The package according to claim 1, wherein a heat seal layer for sealing a top surface is provided on a portion of an outer surface of the wrapping paper, and at least a portion of the top surface is covered by the heat seal layer for sealing the top surface.

5. 5. The package according to claim 4, wherein the top surface is covered over its entire area with the heat seal layer for sealing the top surface.

6. 6. The package according to claim 5, wherein the heat seal layer for sealing the top surface covers the entire corner between the top surface and the peripheral surface in the circumferential direction.

7. The wrapping paper has a basis weight of 30 g / m 2 ~65g / m 2 7. The packaging body according to claim 1, wherein

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