Sanitary thin paper product packaging

Abstract

To provide a sanitary tissue product package capable of improving rigidity and strength over the entirety of a handle part effectively at low costs.SOLUTION: The present invention is a sanitary tissue product package 1 in which a plurality of sanitary tissue products 2 are stored in a film gusset packaging bag 1p having a handle part 11 on a top surface side, and finger hook holes 112 are provided in a double film portion of the handle part 11. The films stacked with each other in the handle part 11 are partially heat-seal connected in the entire region of the handle part 11.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a package for sanitary tissue products.

Background Art

[0002] Conventionally, as a package for sanitary tissue products such as toilet rolls and film-wrapped tissue papers (hereinafter also referred to as "film-wrapped tissue papers"), a package for sanitary tissue products in which a plurality of sanitary tissue products are stored in a gusset package having a handle portion on the top surface side is known.

[0003] In this type of package for sanitary tissue products, if the rigidity of the handle portion is low, it becomes difficult to hook a finger into the finger hole, and if the strength of the finger hook portion is low, there is a problem that the handle portion extends or breaks so that the shape of the finger hole changes during carrying.

[0004] In particular, in the handle portion of the gusset package, in a configuration having a finger hole in the double-layered portion of the film, for example, in the film-wrapped tissue collection package disclosed in Patent Document 1, such a problem was more prominent compared to a configuration having a finger hole in the quadruple-layered portion of the film.

[0005] Therefore, it is conceivable to improve the rigidity of the handle portion and the strength of the finger hook portion by attaching a reinforcing film that covers the finger hole to the handle portion, as in the packaging bag disclosed in Patent Document 2. [[ID=Z5]]

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, the conventional structure described above has the problem that the number of parts increases due to the reinforcing film, leading to higher costs, and while it may be possible to improve the rigidity and strength of the handle in a limited area, it is not possible to effectively improve the rigidity and strength of the entire handle.

[0008] The present invention aims to provide a sanitary tissue paper product packaging that can improve the rigidity and strength of the handle portion throughout the entire structure in a low-cost and effective manner. [Means for solving the problem]

[0009] A first embodiment of the present invention is a packaging for sanitary tissue paper products in which a plurality of sanitary tissue paper products are stored in a film gusset packaging bag having a handle on the top side, and the packaging for sanitary tissue paper products has finger holes in the overlapping portion of the film of the handle, characterized in that the films that are overlapped at the handle are partially heat-sealed together over the entire area of ​​the handle.

[0010] This configuration allows for a low-cost and effective improvement in the rigidity and strength of the handle portion of sanitary tissue paper product packaging.

[0011] Furthermore, the sanitary tissue paper product packaging according to the second embodiment of the present invention is described as the first embodiment, characterized in that the films that are overlapped at the handle portion are heat-sealed in a halftone pattern over the entire area of ​​the handle portion.

[0012] This configuration provides a textured surface across the entire handle of the sanitary tissue paper product packaging, thereby preventing the handle from slipping and improving workability during transport.

[0013] Furthermore, the sanitary tissue paper product packaging according to the third embodiment of the present invention is characterized in that a plurality of finger holes are provided spaced apart in the width direction of the handle portion, as described as the first or second embodiment.

[0014] This configuration distributes the force acting on the handle of the sanitary tissue paper product packaging when it is carried, thereby more effectively improving the overall strength of the handle. [Effects of the Invention]

[0015] According to the present invention, in a film gusset packaging bag having a handle on the top surface, the films that overlap each other at the handle are partially heat-sealed together over the entire area of ​​the handle, thereby enabling a low-cost and effective improvement of the rigidity and strength of the entire handle portion of the sanitary tissue paper product packaging. [Brief explanation of the drawing]

[0016] [Figure 1] This is an overall perspective view of a sanitary tissue paper product packaging according to one embodiment of the present invention. [Figure 2] This is a front view of a sanitary tissue paper product packaging according to one embodiment of the present invention. [Figure 3] This is an enlarged view of section III in Figure 2. [Modes for carrying out the invention]

[0017] The embodiments for carrying out the present invention will be described in detail below with reference to Figures 1 to 3. However, the present invention is not limited to the embodiments described here.

[0018] The hygienic tissue paper product package according to the present invention is a gusset package that houses a plurality of hygienic tissue paper products. The hygienic tissue paper products housed in the hygienic tissue paper product package according to the present invention include toilet rolls, film-wrapped tissue paper, kitchen towel rolls, hand towel rolls, etc. Hereinafter, in one embodiment of the present invention, a film-wrapped tissue paper obtained by pillow-packing or caramel-packing a laminate in which a plurality of sets of tissue papers are alternately folded and laminated with two tissue papers as one set will be described as the hygienic tissue paper product. In the figure, the film-wrapped tissue paper housed in the hygienic tissue paper product package is represented by a two-dot chain line.

[0019] In addition, in the description of this specification and the claims, the "top surface" and the "bottom surface" are referred to as referring to the surface of the film gusset packaging bag itself. However, these terms are for convenience only, and it is needless to say that they do not define the absolute position in the gravitational direction. The same applies to terms such as "up" and "down".

[0020] Furthermore, in the description of this specification, the claims, and the drawings, the "height direction", the "width direction", and the "depth direction" are orthogonal to each other.

[0021] Also, in the description of this specification, the "rectangle" includes not only a rectangle but also a square, and includes a substantially rectangle and a substantially square.

[0022] FIG. 1 is an overall perspective view of a hygienic tissue paper product package 1 according to an embodiment of the present invention, FIG. 2 is a front view of the hygienic tissue paper product package 1 according to this embodiment, and FIG. 3 is an enlarged view of part III in FIG. 2.

[0023] In this embodiment, as shown in Figure 1, a sanitary tissue product package 1 contains multiple sanitary tissue products (film-wrapped tissue paper) 2 in a film gusset packaging bag 1p having a handle portion 11 on the top side, and the handle portion 11 has a finger hole 112 in the double-layered film portion, and the films that are overlapped in the handle portion 11 are partially heat-sealed together over the entire area of ​​the handle portion 11. That is, multiple film-wrapped tissue paper 2, which are the packaged items, are enclosed in a bag-like space between the handle portion 11, which also serves as the top sealing portion, and the bottom sealing portion 13. The handle portion 11 has four-layered portions 11a formed at both ends in the width direction, and two-layered portions 11b formed between the four-layered portions 11a on both sides in the width direction, with a finger hole 112 formed in this two-layered portion 11b, and the overlapping films are partially heat-sealed together over the entire area. Regarding the bottom sealing portion 13, similar to the handle portion 11, a four-layer overlap portion 13a is formed at both ends in the width direction, where four films are overlapped, and a two-layer overlap portion 13b is formed between the four-layer overlap portions 13a on both sides in the width direction, where two films are overlapped, and the overlapping films are heat-sealed together in a straight line along the width direction.

[0024] This configuration makes it possible to improve the rigidity and strength of the handle portion 11 of the sanitary tissue paper product packaging body 1 at a low cost.

[0025] In this embodiment, the sanitary tissue paper product packaging 1, as shown in Figures 1 and 2, consists of a top portion 1A having a handle portion 11 and a pair of inclined surface portions 12, and a body portion 1B that stores five film-wrapped tissue papers 2 horizontally. In the present invention, the film-wrapped tissue papers 2 are not limited to being stacked horizontally with their bottom surfaces on the top surface, but may also be stacked vertically with their sides facing the bottom surface of the film gusset packaging bag 1p.

[0026] Gusset packaging is a type of packaging in which multiple items to be packaged are enclosed in a bag-like space between the heat-sealed or other bonded parts at the top and bottom, and which has a gusset between the front and back. In this embodiment as well, a gusset 14 is formed between the front and back, between the handle portion 11 which also serves as the top sealing portion and the bottom sealing portion 13.

[0027] Such gusset packaging is manufactured by, for example, folding the sides of a cylindrical film gusset packaging bag, also called a gusset tube, inward to flatten it, and then heat-sealing the top portion of the gusset tube to form a heat-sealed portion 111, thereby forming a handle portion 11 that also serves as a top-side sealing portion to seal the top opening. Subsequently, the bottom opening of the film gusset packaging bag precursor, whose top is sealed, is widened and the film-packaged tissue paper 2 to be packaged (in this embodiment, five rolls packed horizontally) is inserted through it. After that, the bottom is also sealed by an appropriate sealing means such as heat sealing to form a bottom-side sealing portion 13.

[0028] In this invention, it is sufficient that a plurality of sanitary tissue products (film-wrapped tissue paper 2) are stored in a film gusset packaging bag 1p having a handle portion 11 on the top side. The bottom sealing portion 13 is not limited to a configuration in which overlapping films are heat-sealed together in a straight line along the width direction, but may also be sealed by overlapping heat-seal packaging. Furthermore, the configuration is not limited to the handle portion 11 also serving as the top sealing portion. For example, a separate top sealing portion may be provided between the handle portion 11 and the storage portion for the film-wrapped tissue paper 2, in which overlapping films are heat-sealed together in a straight line along the width direction.

[0029] In this embodiment, two finger holes 112 are provided, spaced apart in the width direction of the handle portion 11. This configuration distributes the force acting on the handle portion 11 when carrying it, effectively improving the overall strength of the handle portion 11. In this invention, one finger hole 112 may be provided on the handle portion 11, or three or more may be provided spaced apart in the width direction of the handle portion 11.

[0030] In this embodiment, the overlapping films in the handle portion 11 are heat-sealed in a dot pattern across the entire handle portion 11. This configuration provides an uneven surface across the entire handle portion 11, thereby preventing the handle portion 11 from slipping and improving workability during transport. As shown in Figures 1 to 3, the handle portion 11 has multiple rectangular heat-sealed portions 111 that are aligned at predetermined intervals in the vertical and horizontal directions by heat-sealing the overlapping films together.

[0031] As shown in Figure 3, the size of each of the multiple rectangular heat-seal portions 111 is the same, and there is a gap d between multiple adjacent rectangular heat-seal portions 111 in the height and width directions. In the present invention, the size, shape, arrangement pattern, and gaps of the heat-seal portions 111 can be designed considering the rigidity of the handle portion 11 and the ease of gripping when pinched with fingers, but in order to achieve the effects of the present invention, it is preferable that the ratio of the total area of ​​the heat-seal adhesive surface to the area of ​​the handle portion 11 is 20% or more and 60% or less. If the ratio of the total area of ​​the heat-seal adhesive surface to the total area of ​​the handle portion 11 is less than 20%, the strength of the entire handle portion 11 cannot be effectively improved, and if the ratio of the total area of ​​the heat-seal adhesive surface to the area of ​​the handle portion 11 exceeds 60%, the unevenness caused by the heat-seal portions 111 will be reduced, the slipperiness of the handle portion 11 cannot be effectively suppressed, and the workability during transportation cannot be effectively improved.

[0032] In this embodiment, the shape of the dots in the heat-seal portion 111 is rectangular, but the present invention is not limited to this, and for example, squares, rounded polygons including curves, circles, ellipses, etc., can be used. Also, in this embodiment, the dot pattern of the heat-seal portion 111 is a grid pattern in which rectangular heat-seal portions 111 are aligned at predetermined intervals d in the vertical and horizontal directions, but the present invention is not limited to this, and various arrangement patterns such as diagonal grid patterns can be used as long as the effects of the present invention are achieved. In particular, it is preferable to use a dot pattern in which the non-heat-seal joint portion (non-adhesive portion) is not continuous for the dot pattern of the heat-seal portion 111, and in this case the strength of the handle portion 11 can be improved more effectively.

[0033] In this invention, the handle portion 11 only needs to be configured such that the overlapping films are partially heat-sealed together over the entire area. It is not limited to the case where the overlapping films are heat-sealed together in a halftone pattern over the entire area, but it is also possible to create a stripe-shaped heat-seal pattern in which the overlapping films are heat-sealed together linearly along the height or width direction over the entire area. Furthermore, it is preferable to create a grid-shaped heat-seal pattern in which the overlapping films are heat-sealed together linearly along the height and width directions over the entire area. In this case, the force acting on the handle portion 11 during carrying can be effectively distributed in the height and width directions, thereby effectively improving the strength of the handle portion 11. In addition, when the handle portion 11 has a stripe-shaped heat-seal pattern in which the overlapping films are heat-sealed together linearly along the height direction over the entire area, it is preferable to heat-seal the overlapping films above the finger holes linearly along the width direction over the entire width of the handle portion 11 for reinforcement.

[0034] In this embodiment, two pairs of vent holes 121 are formed on a pair of inclined surfaces 12 of the film gusset packaging bag 1p, symmetrically with respect to the handle portion 11, to prevent the sanitary tissue product packaging body 1 from expanding. The vent holes 121 are formed by making circular cuts in the inclined surfaces 12 of the film gusset packaging bag 1p, as shown in Figures 1 and 2, leaving a portion intact. In this invention, the vent holes 121 may be provided on the side surfaces (e.g., the width surface or length surface) of the film gusset packaging bag 1p instead of the inclined surfaces 12, and an embodiment in which no vent holes 121 are formed anywhere on the film gusset packaging bag 1p is also acceptable.

[0035] In the handle portion 11 of the film gusset packaging bag 1p, preferred requirements for having a finger hole 112 in the double-layered portion 11b where two films are layered together are, referring to Figures 1 and 2, (1) the depth dimension L2 of the sanitary tissue paper product packaging body 1 is ≤ the width dimension L1 × 0.6 of the sanitary tissue paper product packaging body 1, and (2) the width dimension L3 of the handle portion 11 is ≤ the width dimension L1 × 1.1 of the sanitary tissue paper product packaging body 1.

[0036] The film-packaged tissue paper 2 according to this embodiment is a bundle of tissue paper that has been overlap-packaged, and this overlap-packaging is also known as caramel packaging or overlap-wrap packaging.

[0037] Specific examples of flexible resin packaging films that constitute the outer casing of film-packaged tissue paper 2 include single-layer films of polyethylene film, polypropylene film, polyester film, polyethylene terephthalate film, nylon film, vinylidene chloride film, ethylene vinyl alcohol copolymer, or laminate films appropriately laminated with these films, or gas barrier films obtained by surface treatment such as aluminum vapor deposition on these films. Furthermore, from the viewpoint of environmental protection, it is desirable to use biomass films derived from plant materials such as sugarcane, potatoes (starch), and corn. From the viewpoint of cost, polypropylene film and polyethylene film are preferred.

[0038] Furthermore, the packaging film that constitutes the outer casing of the film-packaged tissue paper 2 may be a textured film with excellent design and tactile properties. In addition, if packaging items with odors, such as scented tissue paper, an ethylene vinyl alcohol copolymer resin film or polyethylene terephthalate resin film with excellent fragrance retention properties can be used. A multi-layered resin film may also be used, in which a polyethylene resin film or a polypropylene resin film is laminated on one or both sides of the ethylene vinyl alcohol copolymer resin film or polyethylene terephthalate resin film to enhance heat-sealability.

[0039] For the film gusset packaging bag 1p, polypropylene film and polyethylene film are preferable from a cost and ease of opening perspective. Examples of polyethylene films include linear low-density polyethylene film (LLDPE), low-density polyethylene film (LDPE), and medium-density polyethylene film (MDPE). In addition, single-layer films of polyethylene terephthalate film, nylon film, vinylidene chloride film, ethylene vinyl alcohol copolymer, or laminate films appropriately laminated with these films, or gas barrier films with surface treatments such as aluminum vapor deposition applied to these films can be used. Similar to the packaging film that constitutes the outer casing of film-packaged tissue paper 2, from an environmental protection standpoint, it is desirable to use biomass films derived from plant materials such as sugarcane, potatoes (starch), and corn.

[0040] Conventionally, in packaging for sanitary tissue products that has a handle on the top and contains multiple sanitary tissue products within a gusseted package, if the rigidity of the handle is low, it becomes difficult to place fingers in the finger holes, and if the strength of the finger holes is low, the handle may stretch or break during carrying, causing the shape of the finger holes to change.

[0041] In particular, in the handle portion of gusset packaging, a configuration in which a finger hole is provided in the double-layered portion of the film, such as the film-packaged tissue bundle disclosed in Patent Document 1, was more problematic compared to a configuration in which a finger hole is provided in the quadruple-layered portion of the film.

[0042] Therefore, it is conceivable to improve the rigidity of the handle and the strength of the finger holes by attaching a reinforcing film to the handle portion to cover the finger holes, as is done with the packaging bag disclosed in Patent Document 2.

[0043] However, the conventional structure described above has the problem that the number of parts increases due to the reinforcing film, leading to higher costs, and while it may be possible to improve the rigidity and strength of the handle in a limited area, it is not possible to effectively improve the rigidity and strength of the entire handle.

[0044] According to this embodiment, in a film gusset packaging bag 1p having a handle portion 11 on the top surface, the films that overlap each other at the handle portion 11 are partially heat-sealed together over the entire area of ​​the handle portion 11, so that the rigidity and strength of the entire handle portion 11 of the sanitary tissue paper product packaging body 1 can be improved at low cost.

[0045] The present invention is not limited to the embodiments described above or the modifications mentioned in various places, and can be modified or altered as appropriate without departing from the technical spirit of the present invention. [Explanation of symbols]

[0046] 1 Sanitary tissue paper product packaging 1p Film gusset packaging bag 1A Top 11 Handle 111 Heat seal section 112 Finger hole 12 Slope section 121 Vent holes 1B Torso 2. Sanitary tissue paper products (film-wrapped tissue paper)

Claims

1. A sanitary tissue paper product packaging body having a handle on the top side, containing multiple sanitary tissue paper products in a film gusset packaging bag, and having a finger hole in the double-layered film portion of the handle, wherein the films that are overlapped at the handle are partially heat-sealed together over the entire area of ​​the handle. In the aforementioned handle portion, the overlapping films are heat-sealed together in a halftone pattern. A sanitary tissue paper product packaging characterized in that the ratio of the total area of ​​the heat-seal adhesive surface to the area of ​​the handle portion is 20% or more and 60% or less.

2. The sanitary tissue paper product packaging according to claim 1, characterized in that the films that are overlapped at the handle portion are heat-sealed together over the entire area of ​​the handle portion.

3. The sanitary tissue paper product packaging according to claim 1 or 2, characterized in that a plurality of finger holes are provided spaced apart in the width direction of the handle portion.

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