Sheet packaging

Abstract

To provide a sheet package which exhibits an excellent taking-out property of a sheet.SOLUTION: A packaging bag for storing a plurality of stacked sheets includes: a first slit 20 which is formed on an upper surface, extends in a first direction, and structures a sheet taking-out part; and a second slit 50 which extends in a second direction intersecting with the first direction and structures a cushioning part to the sheet taking-out part which is structured by the first slit 20. Thereby, even when a stress is applied on the first slit 20 (the taking-out port) and its periphery, the stress can be released (or scattered) to the second slit 50 (the cushioning part).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sheet packaging body. [Background technology]

[0002] Tissue Sanitary tissue paper such as paper is mainly packed in cartons (cardboard boxes). However, carton-type sanitary tissue paper has problems such as being bulky when transporting and storing, being difficult to dispose of after use, environmental impact, and cost. on the other hand In recent years, there has been an increasing demand for sheet packages in which a sheet of sanitary tissue paper or the like is housed in a flexible film packaging bag. For example, Patent Document 1 discloses a film packaging body in which a flexible film packaging bag containing sanitary paper is formed with an opening (perforation) for removing the sanitary paper. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-188092 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional sheet packaging, the outlet formed by a slit such as a perforation is narrow, making it difficult to open when removing the tissue paper (sheet) from the packaging bag. Also, the outlet formed by a slit in the film packaging bag may lose its sheet-holding power during use, causing the sheet to fall into the packaging bag. Furthermore, since the film packaging bag is lighter than a carton, when the number of sheets remaining decreases during use, the entire film packaging bag may be lifted up when removing the sheet. Thus, conventional sheet packaging has problems with the ease of removing the sheet.

[0005] An object of the present invention is to provide a sheet packaging body that allows easy removal of sheets. [Means for solving the problem]

[0006] A first aspect of the present invention is a sheet packaging body having a plurality of stacked sheets, a packaging bag containing the sheets, a first slit formed on an upper surface of the packaging bag and extending in a first direction, and a second slit formed on the upper surface and extending in a second direction intersecting the first direction. In the first aspect, the first slit extending in the first direction is formed on the upper surface of the packaging bag containing the sheets, and the second slit extending in the second direction intersecting the first direction is formed.

[0007] With this configuration, in the first aspect, a first slit is opened in a first direction on the upper surface of the packaging bag, and a second slit is opened in a second direction intersecting the first direction. Then, the first slit opened in the first direction is a sheet removal portion. (or outlet) The second slit opened in the second direction is a take-out slit formed by the first slit. mouth As a result, in the first aspect, even if stress is applied to the unsealed first slit (dispensing opening) and its surroundings, the stress can be released (or dispersed) to the second slit (buffer section).

[0008] With this configuration, in the first aspect, the stress applied to the first slit (dispensing opening) when the opened first slit is opened with a fingertip can be released (or dispersed) to the second slit (buffer section). This makes it easier to open the opened first slit with a fingertip in the first aspect, and makes it easier to take out sheets from within the packaging bag (e.g., take out the first sheet contained in the packaging bag).

[0009] In the first aspect, the presence of the second slit (buffer section) extending in a second direction intersecting the first direction in which the first slit extends allows the periphery of the first slit to bend (or the first slit to deform in response to the weight of the sheet) held in the first slit (dispensing opening) during use. This allows the sheet's holding force to be maintained in the first aspect, and prevents the sheet from falling into the packaging bag during use (hereinafter, referred to as "sheet falling").

[0010] Furthermore, in the first aspect, the frictional force (or resistance force) acting on the first slit when the sheet is taken out (or pulled out) from the first slit (take-out opening) during use can be released (or dispersed) to the second slit (buffer section). This makes it possible to prevent the entire film packaging bag from lifting up when the sheet is taken out (hereinafter referred to as lifting up of the packaging bag) even if the number of remaining sheets decreases during use (i.e., the weight of the sheet packaging body becomes lighter).

[0011] A second aspect of the present invention is a sheet packaging body in which the second slit intersects with the first slit. In the second aspect, by intersecting the second slit with the first slit, second slits (buffer sections) can be disposed on both sides of the first slit (dispensing opening) in the second direction.

[0012] As a result, in the second aspect, stress acting on the opened first slit and its surroundings can be released (or dispersed) to both sides of the first slit. Also, the first slit can be reliably deflected by the weight of the sheet held in the first slit during use. Furthermore, since the second slit intersecting the first slit is opened continuously with the first slit, the sheet inside the packaging bag can be grasped by inserting a fingertip into the second slit, and the grasped sheet can be taken out from the first slit (take-out opening).

[0013] With this configuration, in the second aspect, the opened first slit (dispensing opening) becomes easier to open with fingertips, making it easier to take out the sheet from the packaging bag. Also, the sheet retention force of the first slit (dispensing opening) during use is further maintained, making it possible to further prevent the sheet from falling during use. Also, even if there are only a few sheets remaining during use, it is possible to further prevent the packaging bag from lifting up when taking out the sheet.

[0014] A third aspect of the present invention is a sheet packaging body, in which the length of the second slit is shorter than the length of the first slit. In the third aspect, by making the length of the second slit shorter than the length of the first slit, the first slit can be reliably configured as a sheet outlet, while the second slit can be reliably configured as a buffer section for releasing (or dissipating) stress applied to the first slit (outlet) and its surroundings.

[0015] A fourth aspect of the present invention is a sheet packaging body, in which the second slit is formed in a central portion of the upper surface. In this specification, the central portion of the upper surface where the second slit is formed refers to a periphery of a portion of the upper surface of the packaging bag that is approximately in the center of the first slit and occupies about one-third of the entire first slit.

[0016] The central part of the upper surface of the packaging bag is a part where stress applied to the first slit is concentrated. In the fourth aspect, by forming the second slit in such a central part of the upper surface, the stress applied to the first slit (dispensing opening) and its surroundings can be efficiently released (or dispersed) to the second slit (buffer part).

[0017] A fifth aspect of the present invention is a sheet packaging body having a third slit formed on the upper surface and extending in the second direction, the third slit being aligned with the second slit in the first direction. In the fifth aspect, a first slit extending in the first direction is formed on the upper surface of a packaging bag containing a sheet, a second slit extending in a second direction intersecting the first direction is formed, and a third slit extending in the second direction and aligned with the second slit in the first direction is further formed.

[0018] With this configuration, in the fifth aspect, the first slit is opened in a first direction on the top surface of the packaging bag, and the second and third slits aligned in the first direction are opened in a second direction intersecting the first direction. This allows stress acting on the opened first slit (outlet) and its surroundings to be released (or dispersed) to the second and third slits (two buffer sections), respectively. Also, the first slit (outlet) can be reliably deflected against the weight of the sheet held in the first slit (outlet) during use.

[0019] As a result, in the fifth aspect, the opened first slit (dispensing opening) can be opened even more easily with fingertips, making it even easier to remove the sheet from the packaging bag. Also, in the fifth aspect, the sheet retention force of the first slit (dispensing opening) during use is further maintained, making it possible to further prevent the sheet from falling during use. Also, in the fifth aspect, even if there are only a few sheets remaining during use, it is possible to further prevent the packaging bag from lifting up when removing the sheet.

[0020] A sixth aspect of the present invention is a sheet packaging body having a third slit formed on the upper surface and extending in a third direction intersecting with the second direction, the third slit intersecting with the second slit. In the sixth aspect, a first slit extending in a first direction is formed on the upper surface of a packaging bag containing a sheet, a second slit extending in a second direction intersecting with the first direction is formed, and a third slit extending in a third direction intersecting with the second direction and intersecting with the second slit is formed. but It is provided.

[0021] With this configuration, in the sixth aspect, the stress applied to the first slit (dispensing opening) and its surroundings when the package is opened can be radially released (or dispersed) to the second slit and the third slit (two buffer sections), respectively. Also, the first slit can be reliably deflected against the weight of the sheet held in the first slit during use.

[0022] As a result, in the sixth aspect, the first slit (dispensing opening) that has been opened can be opened even more easily with a fingertip, making it even easier to remove the sheet from the packaging bag. Also, in the sixth aspect, the sheet retention force of the first slit (dispensing opening) during use is further maintained, making it possible to further prevent the sheet from falling during use. Also, in the sixth aspect, even if there are only a few sheets remaining during use, it is possible to further prevent the packaging bag from lifting up when removing the sheet.

[0023] A seventh aspect of the present invention is a sheet packaging body, in which the third slit is shorter than the first slit. In the seventh aspect, by making the third slit shorter than the first slit, the first slit can be reliably configured as a sheet outlet while the third slit can be reliably configured as a buffer for releasing (or dispersing) stress applied to the first slit (outlet) and its surroundings.

[0024] An eighth aspect of the present invention is a sheet packaging body, in which the third slit is formed in the center of the upper surface. In the eighth aspect, by providing the second slit and the third slit in the center of the upper surface (the portion where the stress on the first slit is concentrated as described above), the stress on the outlet formed by the first slit and its surroundings can be efficiently released (or dispersed) to the second slit and the third slit (two buffer parts), respectively.

[0025] A ninth aspect of the present invention is a sheet packaging body, in which the first slit has a width in the second direction that is shorter than the length of the second slit. In the ninth aspect, by making the first slit have a width in the second direction and the width of the first slit shorter than the length of the second slit, it is possible to provide an outlet whose width dimension in the second direction is shorter than the length of the second slit on the upper surface of the packaging bag.

[0026] Thus, in the ninth aspect, by configuring the first slit as an outlet having such a width dimension in the second direction, the opened first slit (outlet) becomes even easier to open, and it becomes even easier to take out the sheet from the outlet (such as taking out the first sheet contained in the packaging bag). Also, since the frictional force (or resistance force) acting on the first slit (outlet) when taking out (or pulling out) the sheet from the first slit (outlet) during use is reduced, it is possible to reliably prevent the packaging bag from lifting up even if there are only a few sheets remaining during use. Effect of the Invention

[0027] According to one aspect of the present invention, a sheet packaging body having excellent sheet removal properties can be provided. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a diagram showing a sheet wrapping body according to an embodiment (first embodiment) of the present invention. [Diagram 2] FIG. 2 is a diagram showing the sheet wrapping body according to the first embodiment as viewed from above in the height direction. [Diagram 3] FIG. 2 is a diagram showing a state in which the sheet wrapping body according to the first embodiment is used. [Figure 4] FIG. 11 is a diagram showing a sheet wrapping body according to a second embodiment, as viewed from above in a height direction. [Diagram 5] FIG. 11 is a diagram showing a sheet wrapping body according to a third embodiment, as viewed from above in a height direction. [Figure 6] FIG. 13 is a diagram showing a sheet wrapping body according to a fourth embodiment, as viewed from above in a height direction. [Figure 7] FIG. 11 is a diagram showing a sheet wrapping body according to a modified example of the first embodiment. [Figure 8] FIG. 11 is a diagram showing a sheet wrapping body according to a modified example of the first embodiment, as viewed from above in the height direction. [Figure 9] FIG. 11 is a diagram showing a sheet wrapping body according to a modified example of the second embodiment, as viewed from above in the height direction. [Figure 10]FIG. 13 is a diagram showing a sheet wrapping body according to a modified example of the third embodiment, as viewed from above in the height direction. [Figure 11] FIG. 13 is a diagram showing a sheet wrapping body according to a modified example of the fourth embodiment, as viewed from above in the height direction. [Figure 12] FIG. 1 is a diagram showing a conventional sheet packaging body. [Figure 13] 12 is a diagram showing a state in which the sheet wrapping body shown in FIG. 11 is used. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same reference numerals will be used to designate parts common to the various drawings, and the description thereof may be omitted. In addition, the scale of each member in each drawing may differ from the actual scale in order to facilitate understanding.

[0030] Fig. 1 is a diagram showing a sheet wrapping body according to a first embodiment of the present invention. Fig. 2 is a diagram showing the sheet wrapping body according to the first embodiment as viewed from above in the height direction. Fig. 3 is a diagram showing a state in which the sheet wrapping body according to the first embodiment is used. In the sheet wrapping body 100 shown in Figs. 1 to 3, the longitudinal direction (left-right direction) is the X direction, the depth direction (front-rear direction) is the Y direction, and the height direction (up-down direction) is the Z direction. The sheet wrapping body 100 according to this embodiment will be described below.

[0031] As shown in Figs. 1 to 3, the sheet packaging body 100 according to the first embodiment has a sheet ST, a packaging bag 10, a first slit 20, and a second slit 50. The sheet packaging body 100 is one example of the sheet packaging body according to the present invention. The sheet ST, the packaging bag 10, the first slit 20 (take-out opening OP), and the second slit 50 are each one example of the sheet, the packaging bag, the first slit, and the second slit that respectively constitute the sheet packaging body according to the present invention.

[0032] The sheet ST is contained in the packaging bag 10 as a stack SL in which a plurality of sheets ST are stacked. The stack SL of the sheets ST is arranged in the stacking direction of the sheets ST. (SD direction) The sheets ST are contained in the packaging bag 10 so that the height direction (Z direction) is the height direction (Z direction). The sheet stack SL is configured so that the sheets ST can be pulled out one by one through a first slit 20 (take-out opening OP) formed in the packaging bag 10.

[0033] The stack SL of sheets ST is not limited to a stack of a plurality of sheets ST, but may be stacked in a folded state, or may be stacked in a folded state with the sheets ST alternately stacked (a so-called pop-up type stack SL of sheets ST). From the viewpoint of pulling out the sheets ST one by one, the stack SL of sheets ST is preferably a stack SL that can be pulled out in a pop-up type.

[0034] The dimensions of the laminate SL of the sheets ST can be such that the length in the longitudinal direction (X direction) of the sheet wrapping body 100 is about 80 to 250 mm, the length in the depth direction (Y direction) perpendicular to the longitudinal direction (X direction) of the sheet wrapping body 100 in a top view is about 50 to 130 mm, and the height direction (Z direction) is about 10 to 90 mm. Seat ST Laminate of SL can be produced, for example, by means of a rotary or multi-stand interfolder.

[0035] The use of the sheet ST is not particularly limited, and it can be applied to sanitary thin papers such as tissue paper, toilet paper, kitchen paper, paper towels, etc. These sanitary thin papers also include sanitary thin papers containing moisturizing ingredients (for example, lotion tissue, etc.). The use of the sanitary thin paper constituting the sheet ST is not particularly limited, and it can be applied to any of industrial, household, and portable uses. The sheet packaging body 100 of the present embodiment is preferably used for household tissue paper among these.

[0036] The number of plies of the sheet ST is not particularly limited, but can be one or more plies, and preferably one ply. stomach and more preferably, two-ply (two sheets stacked together). The shape of the sheet ST is not particularly limited, but it is preferable that the two-ply sheet has a rectangular contour when folded, for example.

[0037] The material of the sheet ST is not particularly limited, and may be, for example, a sheet of paper, nonwoven fabric, cloth, or the like, and is preferably a paper sheet. When the sheet ST is a paper sheet, base paper containing pulp as the main raw material is used. The pulp composition may be a known composition for paper sheets. For example, the blending ratio of pulp may be 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass.

[0038] The pulp composition of the sheet ST (paper sheet) may be, for example, a mixture of softwood pulp such as NBKP (softwood kraft pulp) or NUKP (softwood unbleached pulp) and hardwood pulp such as LBKP (hardwood kraft pulp) or LUKP (hardwood unbleached pulp) in any ratio. In particular, a pulp composition having a higher ratio of softwood pulp to hardwood pulp is preferred. The ratio of softwood pulp to hardwood pulp is preferably 50:50 to 80:20. The pulp contained in the pulp composition of the sheet ST (paper sheet) may be recycled paper pulp.

[0039] The basis weight of the sheet ST is not particularly limited, but in the case of paper, it is 10 to 80 g / m depending on the number of plies. 2 , 20 to 100 g / m for nonwoven fabrics 2 The basis weight is measured in accordance with the JIS P 8124 standard.

[0040] The thickness of the sheet ST (paper sheet) is not particularly limited, but may be, for example, the paper thickness measured under the environment of JIS P 8111 (1998). For example, the thickness of the paper sheet constituting the sheet ST is preferably 50 to 500 μm, more preferably 60 to 330 μm per ply.

[0041] The paper thickness is measured by thoroughly conditioning the test piece under the conditions of JIS P 8111 (1998), and then measuring the thickness of one ply under the same conditions using a dial thickness gauge (thickness measuring device) "PEACOCK G type" (manufactured by Ozaki Manufacturing Co., Ltd.). Specifically, after making sure that there is no dirt or dust between the plunger and the measurement table, the plunger is lowered onto the measurement table, and the dial thickness gauge's scale is moved to set the zero point. Next, the plunger is raised and the sample is placed on the test table, and the gauge is read when the plunger is slowly lowered. At this time, the plunger is only placed on the test table. The terminal of the plunger is made of metal, and the circular flat surface with a diameter of 10 mm is made to contact the paper surface perpendicularly, and the load during the paper thickness measurement is about 70 gf. The paper thickness is the average value obtained by performing the measurement 10 times.

[0042] The paper sheets constituting the sheet ST may be embossed. Such embossing may be performed by a known contact embossing or edge embossing method in which an embosser (not shown) is pressed against both ends of a paper sheet and multiple paper sheets are laminated together, a known pin embossing method in which a pin (not shown) is pierced into a paper sheet to form a pin embossment on one side of the paper sheet, or a known embossing method in which a water-soluble adhesive (such as starch) is heated and melted to bond laminated paper sheets (not shown) together to form an embossment.

[0043] The packaging bag 10 constituting the sheet packaging body 100 is formed of a flexible film. The packaging bag 10 is manufactured by caramel packaging. Specifically, both ends of a cylindrical flexible film are formed by folding and bonding (sealing) seal parts 30, 40. The packaging form of the sheet packaging body 100 is not limited to such caramel packaging, and both ends or either one of the ends of the cylindrical flexible film may be sealed in a gusset shape by heat sealing (sealed by so-called pillow packaging).

[0044] Furthermore, the material of the flexible film forming the packaging bag 10 is not particularly limited, and examples of resins that can be used include polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer (EVA), polyamide (PA), etc.

[0045] Among these flexible films, polyethylene, polypropylene, polyethylene terephthalate, and the like are preferred from the viewpoints of flexibility, excellent handling, high sealability when heat sealed, and low cost. Polyethylene is preferred from the viewpoints of odorlessness, excellent water resistance and chemical resistance, and low cost mass production. As polyethylene, high density polyethylene, low density polyethylene, and the like can be used. Polypropylene is preferred from the viewpoints of robustness, ease of molding, good color development when printed, and ability to impart gloss.

[0046] The form of the flexible film forming the packaging bag 10 is not particularly limited, and may be a monolayer film formed of a single layer of the above-mentioned resin, a laminate film in which the above-mentioned resin is laminated, or a mixed film formed of a mixture of two or more of the above-mentioned resins.

[0047] The thickness of the flexible film forming the packaging bag 10 is not particularly limited, and is preferably 20 to 100 μm, and more preferably 25 to 70 μm. By making the thickness of the flexible film 20 μm or more, it is possible to ensure sufficient strength for the packaging bag 10 in which the sheet ST is contained. In addition, by making the thickness of the flexible film 100 μm or less, packaging bag 10 This ensures flexibility and light weight, while also reducing costs.

[0048] In this embodiment, the packaging bag 10 has an upper surface 11, a lower surface 12, a front surface 13, a rear surface 14, and side surfaces 15 and 16, and contains a stack SL of sheets ST. In the sheet packaging body 100, as shown in Figs. 1 and 3, the upper surface 11 and the lower surface 12 face each other in the up-down direction (Z direction), the front surface 13 and the rear surface 14 face each other in the front-rear direction (Y direction), and the side surfaces 15 and 16 face each other in the left-right direction (X direction).

[0049] In the packaging bag 10, the upper surface 11 is provided at the top in the vertical direction (Z direction), and the lower surface 12 is provided at the bottom in the vertical direction (Z direction). The front surface 13 is provided at the front in the front-rear direction (Y direction), and the rear surface 14 is provided at the rear in the front-rear direction (Y direction). Furthermore, the side surface 15 is provided at the left in the left-right direction (Y direction), and the side surface 16 is provided at the right in the left-right direction (Y direction). The side surface 15 and the side surface 16 are continuous with all of the upper surface 11, the lower surface 12, the front surface 13, and the rear surface 14 (see Figs. 1 and 3).

[0050] The first slit 20 is formed on the upper surface 11 of the packaging bag 10. The first slit 20 is disposed at a center 11a of the upper surface 11 of the packaging bag 10 in the longitudinal direction (X direction) of the sheet packaging body 100, and extends in a first direction. In this embodiment, the first direction in which the first slit 20 extends corresponds to the longitudinal direction (X direction) of the sheet packaging body 100.

[0051] The shape of the first slit 20 is not particularly limited, and can be formed, for example, by forming a perforation on the top surface 11 of the packaging bag 10, as shown in Figures 1 and 2. In the example shown in Figures 1 and 2, the top surface 11 of the packaging bag 10 is opened in a first direction (X direction) by tearing the first slit 20 formed by the perforation, and the torn (opened) first slit 20 forms an outlet OP for the sheet ST.

[0052] The dimension (length L1) of the first slit 20 (perforation) can be determined arbitrarily according to the dimension of the sheet ST to be taken out. For example, the difference in length of the take-out opening OP with respect to the width dimension of the sheet ST in the left-right direction (X direction) is preferably -100 to 0 mm, more preferably -80 to 0 mm, and further preferably -70 to -10 mm.

[0053] In this embodiment, a second slit 50 is further formed in the upper surface 11 of the packaging bag 10. The second slit 50 is formed in the central portion 11b of the upper surface 11, and extends in a second direction intersecting with the first direction (X direction).

[0054] Here, the central portion 11b of the upper surface 11 refers to the periphery of a portion of the upper surface 11 of the packaging bag 10 that is approximately at the center of the first slit 20 and occupies about one-third of the entire first slit 20. The second direction in which the second slit 50 extends corresponds to the depth direction (Y direction) of the sheet packaging body 100 (see FIGS. 1 to 3).

[0055] The shape of the second slit 50 is not particularly limited. For example, To 2, the second slit 50 formed by the perforation can be torn to open the top surface 11 of the packaging bag 10 in the second direction (Y direction), and the torn (opened) second slit 50 constitutes a buffer section BS for the take-out opening OP of the sheet ST.

[0056] The dimensions of the second slit 50 (perforation) are not particularly limited, but as shown in Fig. 2, it is preferable that the length L2 of the second slit 50 is shorter than the length L1 of the first slit 20. Specifically, the ratio of the length L2 of the second slit 50 to the length L1 of the first slit 20 is preferably 3 to 25%, more preferably 4 to 20%, and further preferably 5 to 15%.

[0057] In this embodiment, as described above, a first slit 20 extending in a first direction (X direction) is formed on the upper surface 11 of the packaging bag 10 in which the sheet ST (sheet stack SL) is contained, and a second slit 50 extending in a second direction (Y direction) intersecting the first direction (X direction) is formed (see Figs. 1 and 2). As a result, in this embodiment, even if stress is applied to the opened first slit 20 (take-out opening OP) and its surroundings 20a, the stress can be released (or dispersed) to the second slit 50 (buffer section BS) (see Fig. 3).

[0058] With this configuration, in this embodiment, the stress applied to the first slit 20 (take-out opening OP) when opening the opened first slit 20 with a fingertip can be released (or dispersed) to the second slit 50 (buffer section BS). Therefore, according to this embodiment, the opened first slit 20 can be easily opened with a fingertip, and it becomes easy to take out the sheet ST from inside the packaging bag 10 (e.g., take out the first sheet of the sheet ST contained in the packaging bag 10).

[0059] In this embodiment, there is a second slit 50 (buffer section BS) extending in a second direction (Y direction) intersecting with the first direction (X direction) in which the first slit 20 extends. As a result, in this embodiment, the periphery 20a of the first slit 20 can bend (or the first slit 20 can deform in response to the weight of the sheet ST held in the first slit 20 (take-out opening OP) during use. Therefore, according to this embodiment, the holding force of the sheet ST is maintained, and it is possible to prevent the sheet ST from falling into the packaging bag 10 during use (hereinafter, referred to as the falling of the sheet ST).

[0060] Furthermore, in this embodiment, the frictional force (or resistance force) acting on the first slit 20 when the sheet ST is taken out (or pulled out) from the first slit 20 (take-out opening OP) during use can be released (or dispersed) to the second slit 50 (buffer section BS). Therefore, according to this embodiment, even if the remaining sheet ST becomes small during use (i.e., even if the weight of the sheet packaging body 100 becomes light), it is possible to prevent the entire packaging bag 10 from lifting up when the sheet ST is taken out (hereinafter, referred to as lifting up of the packaging bag 10).

[0061] In this embodiment, by making the length L2 of the second slit 50 shorter than the length L1 of the first slit 20 as described above, the first slit 20 can be reliably configured as an outlet OP for the sheet ST. Also, the second slit 50 can be reliably configured as a buffer section BS for releasing (or dissipating) stress applied to the first slit 20 (outlet OP) and its surroundings 20a.

[0062] In this embodiment, the central portion 11b of the upper surface 11 of the packaging bag 10 where the second slit 50 is formed as described above is a portion of the upper surface 11 of the packaging bag 10 where the stress applied to the first slit 20 is concentrated. Therefore, by forming the second slit 50 in such central portion 11b of the upper surface 11, the stress applied to the first slit 20 (take-out opening OP) and its surroundings 20a can be efficiently released (or dispersed) to the second slit 50 (buffer portion BS).

[0063] Fig. 4 is a view of the sheet packaging body according to the second embodiment as viewed from above in the height direction. As shown in Fig. 4, in the sheet packaging body 100 according to the second embodiment, the second slit 50 intersects with the first slit 20. Specifically, the second slit 50 is composed of a partial slit 51 formed on the front surface 13 side of the packaging bag 10 with respect to the first slit 20, and a partial slit 52 formed on the back surface 14 side of the packaging bag 10 (see Fig. 4).

[0064] In the second embodiment, the second slit 50 intersects with the first slit 20 in this manner, so that the second slit 50 (buffer section BS) is disposed on both sides of the first slit 20 (take-out opening OP) in the second direction (Y direction) (see FIG. 4). As a result, in the second embodiment, the stress applied to the opened first slit 20 and its surroundings 20a can be released (or dispersed) to both sides of the first slit 20. Also, in the second embodiment, the first slit 20 can be reliably deflected against the weight of the sheet ST held in the first slit 20 during use.

[0065] Furthermore, in the second embodiment, the second slit 50 intersecting the first slit 20 is opened continuously with the first slit 20. Therefore, in the second embodiment, the sheet ST in the packaging bag 10 can be grasped by inserting a fingertip into the second slit 50, and the grasped sheet ST can be taken out from the first slit 20 (take-out opening OP).

[0066] Therefore, according to the second embodiment, the opened first slit 20 (take-out opening OP) can be opened even more easily with fingertips, and the sheet ST can be taken out from the packaging bag 10 even more easily. Also, according to the second embodiment, the holding force of the sheet ST by the first slit 20 (take-out opening OP) during use is further maintained, and the sheet ST can be further prevented from falling during use. Furthermore, according to the second embodiment, even if the remaining sheet ST becomes small during use, the packaging bag 10 can be further prevented from lifting up when the sheet ST is taken out.

[0067] Fig. 5 is a view of the sheet packaging body according to the third embodiment as viewed from above in the height direction. In the sheet packaging body 100 according to the third embodiment, as shown in Fig. 5, a third slit 60 is further formed on the upper surface 11 of the packaging bag 10. The third slit 60 is formed in the center 11b of the upper surface 11 side by side with the second slit 50 in the first direction, and extends in a second direction intersecting the first direction (see Fig. 5). Specifically, the third slit 60 is composed of a partial slit 61 formed on the front surface 13 side of the packaging bag 10 with respect to the first slit 20, and a partial slit 62 formed on the back surface 14 side of the packaging bag 10 (see Fig. 5).

[0068] Here, the first direction in which the third slits 60 are aligned with the second slits 50 corresponds to the longitudinal direction (X direction) of the sheet wrapping body 100. The second direction in which the third slits 60 extend corresponds to the depth direction (Y direction) of the sheet wrapping body 100 ( Figure 5 reference).

[0069] The shape of the third slit 60 is not particularly limited, and for example, as shown in Fig. 5, it can be formed by forming a perforation on the upper surface 11 of the packaging bag 10. In the example shown in Fig. 5, by tearing the third slit 60 formed by the perforation, the upper surface 11 of the packaging bag 10 is opened in the second direction (Y direction), and the torn (opened) third slit 60, together with the second slit 50, forms a buffer section BS for the take-out opening OP of the sheet ST.

[0070] Although the dimensions of the third slit 60 (perforation) are not particularly limited, it is preferable that the length L3 of the third slit 60 is shorter than the length L1 of the first slit 20, as shown in Fig. 5. Specifically, the ratio of the length L3 of the third slit 60 to the length L1 of the first slit 20 is preferably 3 to 25%, more preferably 4 to 20%, and further preferably 5 to 15%.

[0071] In the third embodiment, a first slit 20 extending in a first direction (X direction) is formed in an upper surface 11 of a packaging bag 10 containing a sheet ST (laminated sheet SL), and a second slit 50 extending in a second direction (Y direction) intersecting the first direction (X direction) is formed. A third slit 60 extending in the second direction (Y direction) and aligned with the second slit 50 in the first direction (X direction) is further formed.

[0072] With this configuration, in the third embodiment, the first slit 20 is opened in the first direction (X direction) on the upper surface 11 of the packaging bag 10, and the second slit 50 and the third slit 60 aligned in the first direction (X direction) are each opened in a second direction (Y direction) intersecting the first direction (X direction).

[0073] As a result, in the third embodiment, stress acting on the opened first slit 20 (outlet OP) and its surroundings 20a can be released (or dispersed) to the second slit 50 and the third slit 60 (two buffer sections BS), respectively. Also, in the third embodiment, the first slit 20 (outlet OP) can be reliably deflected against the weight of the sheet ST held in the first slit 20 (outlet OP) during use.

[0074] Therefore, according to the third embodiment, the opened first slit 20 (dispensing opening OP) can be opened even more easily with fingertips, and the sheet ST can be taken out from the packaging bag 10 even more easily. Also, according to the third embodiment, the holding force of the sheet ST by the first slit 20 (dispensing opening OP) during use is further maintained, and the sheet ST can be further prevented from falling during use. Furthermore, according to the third embodiment, even if the remaining sheets ST become few during use, the packaging bag 10 can be further prevented from lifting up when the sheet ST is taken out.

[0075] In the third embodiment, by making the length L3 of the third slit 60 shorter than the length L1 of the first slit 20 as described above, the first slit 20 can be reliably configured as an outlet OP for the sheet ST. Also, the third slit 60 can be reliably configured together with the second slit 50 as a buffer section BS for releasing (or dissipating) stress applied to the first slit 20 (outlet OP) and its surroundings 20a.

[0076] In this embodiment, the central portion 11b of the upper surface 11 of the packaging bag 10 where the third slit 60 is formed as described above is a portion of the upper surface 11 of the packaging bag 10 where the stress applied to the first slit 20 is concentrated as described above. Therefore, by forming the third slit 60 in such central portion 11b of the upper surface 11, the stress applied to the first slit 20 (the outlet OP) and its surroundings 20a can be efficiently released (or dispersed) to the second slit 50 and the third slit 60 (two buffer portions BS).

[0077] Fig. 6 is a diagram of the sheet packaging body according to the fourth embodiment as viewed from above in the height direction. In the sheet packaging body 100 according to the fourth embodiment, as shown in Fig. 6, a third slit 60 is formed on the upper surface 11 of the packaging bag 10 and extends in a third direction intersecting with the second direction (Y direction). The third slit 60 intersects with the second slit 50 .

[0078] No. 4 6, a first slit 20 extending in a first direction (X direction) is formed in an upper surface 11 of a packaging bag 10 containing a sheet ST (laminated sheet SL), and a second slit 50 extending in a second direction (D1 direction) intersecting with the first direction (X direction) is formed. A third slit 60 extending in a third direction (D2 direction) intersecting with the second direction (D1 direction) is formed so as to intersect with the second slit 50.

[0079] Here, the second direction (D1 direction) in which the second slit 50 extends is the longitudinal direction (X direction) of the sheet wrapping body 100. Exchange The third direction in which the third slit 60 extends is the longitudinal direction (X direction) of the sheet wrapping body 100. Exchange The direction intersects with the second direction (D1 direction) (see FIG. 6).

[0080] The shape of the third slit 60 is not particularly limited, and for example, as shown in Fig. 6, it can be formed by forming perforations on the upper surface 11 of the packaging bag 10. In the example shown in Fig. 6, by tearing the second slit 50 and the third slit 60 formed by the perforations, the upper surface 11 of the packaging bag 10 is opened in the second direction (D1 direction) and the third direction (D2 direction), and the torn (opened) second slit 50 and the torn (opened) third slit 60 form a radial buffer section BS with respect to the take-out opening OP of the sheet ST.

[0081] In the fourth embodiment, such a configuration allows stress acting on the opened first slit 20 (take-out opening OP) and its surroundings 20a to be radially released (or dispersed) to the second slit 50 and the third slit 60 (two buffer sections BS), respectively. Also, the first slit 20 can be reliably deflected against the weight of the sheet ST held in the first slit 20 during use.

[0082] Therefore, according to the fourth embodiment, the opened first slit 20 (dispensing opening OP) becomes even easier to open with fingertips, and the sheet ST can be even more easily removed from the packaging bag 10. Furthermore, according to the fourth embodiment, the holding force of the sheet ST by the first slit 20 (dispensing opening OP) during use is further maintained, and the sheet ST can be even more prevented from falling during use. Furthermore, according to the fourth embodiment, even if the remaining sheets ST become few during use, the packaging bag 10 can even be even more prevented from lifting up when the sheet ST is removed.

[0083] Fig. 7 is a diagram showing a sheet wrapping body according to a modified example of the first embodiment. No. 13A to 13C are diagrams showing the sheet wrapping bodies according to the respective modified examples of the fourth embodiment as viewed from above in the height direction. No. As shown in Figs. 7 to 11, in each sheet wrapping body 100 according to the four embodiments, the first slit 20 has a width W1 in the second direction (Y direction).

[0084] The width W1 of the first slit 20 is shorter than the length L2 of the second slit 50 (see FIGS. 7 to 11). Specifically, the ratio of the width W1 of the first slit 20 to the length L2 of the second slit 50 is preferably 10 to 90%, more preferably 20 to 80%, and further preferably 30 to 70%.

[0085] Moreover, the width W1 of the first slit 20 is also shorter than the length L3 of the third slit 60 (see FIGS. 7 to 11). Specifically, the ratio of the width W1 of the first slit 20 to the length L3 of the third slit 60 is preferably 10 to 90%, more preferably 20 to 80%, and further preferably 30 to 70%.

[0086] In each of the modified examples of the first to fourth embodiments, as described above, the first slit 20 has a width W1 in the second direction (Y direction), and the width W1 of the first slit 20 is shorter than the length L2 of the second slit 50. (See Figures 7 to 11) As a result, when the first slit 20 is opened, a take-out opening OP is formed on the upper surface 11 of the packaging bag 10, the dimension of the width W1 in the second direction (Y direction) being shorter than the length L2 of the second slit 50.

[0087] In addition, in each of the modified examples of the third and fourth embodiments, the width W1 of the first slit 20 is shorter than the length L3 of the third slit 60. As a result, when the first slit 20 is opened, the removal opening OP formed on the upper surface 11 of the packaging bag 10 has a width dimension in the second direction (Y direction) shorter than the length L3 of the third slit 60. (See Fig. 10 and Fig. 11) .

[0088] In each of the modified examples of the second to fourth embodiments, as shown in Fig. 9 to Fig. 11, the length L2 of the second slit 50 indicates the sum of the length L21 of the partial slit 51 and the length L22 of the partial slit 52. In addition, in each of the modified examples of the third and fourth embodiments, as shown in Fig. 10 and Fig. 11, the length L3 of the third slit 60 indicates the sum of the length L31 of the partial slit 61 and the length L32 of the partial slit 62.

[0089] In each of the modified examples of the first to fourth embodiments, the first slit 20 constitutes an outlet OP having a dimension of width W1 in the second direction (Y direction), which makes it easier to open the unsealed first slit 20 (outlet OP). Therefore, according to each of the modified examples of the first to fourth embodiments, it becomes easier to take out the sheet ST from the outlet OP constituted by the first slit 20 (such as taking out the first sheet of the sheet ST (sheet stack SL) contained in the packaging bag 10).

[0090] Furthermore, in each of the modified examples of the first to fourth embodiments, the frictional force (or resistance force) acting on the first slit 20 (dispensing opening OP) when the sheet ST is taken out (or pulled out) from the first slit 20 (dispensing opening OP) during use is reduced. Therefore, according to each of the modified examples of the first to fourth embodiments, even if the remaining sheet ST becomes small during use, it is possible to reliably prevent the packaging bag 10 from being lifted up. EXAMPLES

[0091] The present invention will now be described in more detail with reference to the following examples. The examples and comparative examples were evaluated by the following tests.

[0092] [Sheet packaging (test specimen)] A sheet packaging body 100 was prepared as a test specimen, in which a sheet laminate SL, in which multiple sheets ST were laminated, was packaged in a packaging bag 10 (see Figs. 1 and 7). For the sheet laminate SL, tissue paper (product name "Hello Soft Pack tissue", manufactured by Universal Paper Co., Ltd., 2 ply, 300 sheets, dimensions: length approx. 205 mm, width approx. 195 mm) was used, in which the sheets ST were folded alternately and stacked so that they could be pulled out one by one in a pop-up style. The sheet laminate SL was placed in the packaging bag 10 so that the stacking direction (SD direction) was the height direction (Z direction) of the sheet packaging body 100 (see Figs. 1 and 7). The material of the packaging bag 10 was a 50 μm thick paper. mThe polyethylene (PE) used was used. The packaging form of the packaging bag 10 was such that both ends of the sheet packaging body 100 were sealed with caramel packaging (sealed portions 30, 40 were formed). The dimensions of the sheet packaging body 100 were approximately 200 mm in the longitudinal direction (X direction), approximately 105 mm in the depth direction (Y direction), and approximately 40 mm in the height direction (Z direction). In addition, a first slit 20 (perforation) extending in the first direction (X direction) was formed on the upper surface 11 of the packaging bag 10. The dimension (length L1) of the first slit 20 (perforation) was approximately 185 mm in the first direction (X direction).

[0093] [Pull-out resistance] The pull-out resistance of the sheet wrapping body 100 was confirmed. In the confirmation of the pull-out resistance, the above-mentioned test body (sheet wrapping body 100) was placed on a flat placement surface, and the first set of tissues was pulled out from the take-out opening (first slit 20) of the packaging bag 10. - About half of the paper (sheet ST) was pulled out, and the top end of the pulled-out sheet ST (the central portion in the longitudinal direction (X direction) of the sheet packaging body 100) was clamped with a clip (manufactured by KOKUYO Co., Ltd., "Cli-17"). A hook of a push-pull gauge (manufactured by IMADA Co., Ltd., model number: Z2-20) was passed through one hole in the handle of the clip, and the clip was pulled at a constant speed over a period of 0.4 to 0.6 seconds. packaging bag 10 Top of 11 Vertically to the tissue - Pull out the paper Ta Resistance force at time (unit: kgf) As a withdrawal resistance The evaluation criteria for the pull-out resistance are as follows: if the resistance when pulling out is 0.2 kgf or less, it is considered good (the sheet ST is easy to take out). thing) and evaluation However, if it exceeds 0.2kgf, it is not good (the sheet ST is difficult to remove). thing) and evaluation did.

[0094] [Easy to remove (initial)] The initial take-out property of the sheet wrapping body 100 was confirmed. In the check of the take-out property, when the first sheet ST of the sheet stack SL contained in the packaging bag 10 of the sheet wrapping body 100 was taken out through the first slit 20 (take-out opening OP) of the packaging bag 10 that had been opened, of The ease of removal was evaluated. The evaluation of the ease of removal (initial stage) was performed according to the following criteria. 5: The first pair is very easy to pick up 4: The first pair is easy to pick up 3: The first pair is picked up 2: The first pair is easy to pick up but difficult to grasp 1: The first pair is easy to pick up but very difficult to grasp

[0095] [Non-depressing] The non-sagging property of the sheet ST contained in the packaging bag 10 of the sheet packaging body 100 was confirmed. In the confirmation of the non-sagging property, whether the sheet ST falls into the packaging bag 10 (non-sagging property) was evaluated when the sheet ST was pulled out from the sheet stack SL through the first slit 20 of the packaging bag 10. The non-sagging property was evaluated according to the following criteria. 5: No sagging of the seat 4: Seat ST falls 1 to 3 times is 3: Seat ST falls 4 to 6 times is 2: Seat ST falls 7 to 9 times is 1: Seat ST falls 10 or more times is

[0096] [Non-lifting] The non-lifting property of the packaging bag 10 containing the sheet ST of the sheet packaging body 100 was confirmed. In checking the non-lifting property, whether the packaging bag 10 lifts up (non-lifting property) was evaluated when the sheet ST was pulled out from the sheet stack SL through the first slit 20 of the sheet packaging body 100. The non-lifting property was evaluated according to the following criteria. 5: The packaging bag 10 does not lift up 4: The number of sheets ST remaining is between 1 and 3, and the packaging bag 10 is lifted up. 3: There are 4 to 6 sets of sheets ST remaining and the packaging bag 10 is lifted up 2: There are 7 to 9 pairs of sheets ST remaining and the packaging bag 10 is lifted up 1: There are 10 or more sets of sheets ST remaining and the packaging bag 10 is lifted up

[0097] Examples and comparative examples will be described below.

[0098] [Example 1] In the sheet packaging body 100, as shown in Figs. 1 and 2, a second slit 50 (not intersecting with the first slit 20) extending in the second direction (Y direction) is formed in the central portion 11b of the upper surface 11 of the packaging bag 10. Dimensions of the second slit 50 (Length L2) The distance in the second direction (Y direction) was set to about 20 mm. The test specimen was evaluated for pull-out resistance, take-out property (initial stage), anti-sagging property, and anti-lifting property. The results are shown in Table 1.

[0099] [Example 2] In the sheet wrapping body 100, as shown in FIG. 4, a second slit 50 intersecting the first slit 20 is provided. (Partial slits 51, 52) The evaluation was carried out in the same manner as in Example 1, except that the above-mentioned was formed. The results are shown in Table 1.

[0100] [Example 3] In the sheet wrapping body 100, as shown in FIG. 5, a second slit 50 is formed in the first direction (X direction). (Partial slits 51, 52) A third slit 60 is arranged parallel to the first slit 60 and extends in the second direction (Y direction). (Partial slits 61, 62) The evaluation was carried out in the same manner as in Example 2, except that the above-mentioned was formed. The results are shown in Table 1.

[0101] [Example 4] In the sheet wrapping body 100, as shown in FIG. 6, a second slit 50 extending in the second direction (direction D1) is provided. (Partial slits 51, 52) and a third slit 60 extending in a third direction (direction D2) and intersecting with the second slit 50. (Partial slits 61, 62)The evaluation was carried out in the same manner as in Example 3, except that the above-mentioned was formed. The results are shown in Table 1.

[0102] [Example 5] 7 and 8, the sheet packaging body 100 was evaluated in the same manner as in Example 1, except that the first slit 20 had a width W1 in the second direction (Y direction) that was shorter than the length L2 of the second slit 50. The results are shown in Table 1.

[0103] [Example 6] In the sheet wrapping body 100, as shown in FIG. 9, the first slit 20 is aligned in the second direction (Y direction) so as to have a length L2 of the second slit 50. (The sum of the length L21 of the partial slit 51 and the length L22 of the partial slit 52) Except for having a shorter width W1, it was evaluated in the same manner as in Example 2. The results are shown in Table 1.

[0104] [Example 7] In the sheet wrapping body 100, as shown in FIG. 10, the first slit 20 is aligned in the second direction (Y direction) so as to have a length L2 of the second slit 50. (The sum of the length L21 of the partial slit 51 and the length L22 of the partial slit 52) Except for having a shorter width W1, it was evaluated in the same manner as in Example 3. The results are shown in Table 1.

[0105] [Example 8] In the sheet wrapping body 100, as shown in FIG. 11, the first slit 20 is aligned in the second direction (Y direction) so as to have a length L2 of the second slit 50. (The sum of the length L21 of the partial slit 51 and the length L22 of the partial slit 52) Except for having a shorter width W1, it was evaluated in the same manner as in Example 4. The results are shown in Table 1.

[0106] [Comparative Example 1] 1 and 2, evaluation was performed in the same manner as in Example 1, except that the second slit 50 was not formed. The results are shown in Table 1.

[0107] [Reference example 1] In the sheet wrapping body 100 shown in FIG. 7 and FIG. 8, the second slit 50 was not formed. 5 The results are shown in Table 1.

[0108] [Table 1]

[0109] As shown in Table 1, the sheet packaging body 100 in which a first slit 20 extending in a first direction (X direction) was formed on the upper surface 11 of the packaging bag 10 and a second slit 50 extending in a second direction (Y direction) was further formed in the central portion 11b of the upper surface 11 of the packaging bag 10, had good pull-out resistance, removal property (initial), anti-sagging property, and anti-lifting property (Examples 1 to 8).

[0110] In addition, the sheet packaging body 100 in which the second slit 50 and the third slit 60 extending in the second direction (Y direction) are formed in the central portion 11b of the upper surface 11 of the packaging bag 10 has excellent pull-out resistance, take-out property (initial stage), non-sagging property, and non-lifting property. At least one of Improved (Examples 3, 4, 7, and 8).

[0111] On the other hand, in the sheet packaging body 100 in which neither the second slit 50 nor the third slit 60 is formed, the pull-out resistance, the take-out property (initial stage), the non-sagging property, and the non-lifting property are not good. At least one of the following has decreased (Comparative Example 1, Reference Example 1).

[0112] From these results, A first slit is formed on the upper surface of the packaging bag and extends in a first direction; A second slit is formed on the upper surface of the packaging body and extends in a second direction intersecting the first direction. and It was found that the sheet packaging body having the above structure was excellent in ease of removing the sheet.

[0113] Although an embodiment of the present invention has been described above, the present invention is not limited to a specific embodiment, and various modifications and changes are possible within the scope of the invention described in the claims. [Explanation of symbols]

[0114] 100 Sheet packaging ST Sheet (hygienic tissue paper) SL Sheet laminate 10 packaging bags 11 Top side 11a center 11b Central part 12 Bottom side 13 Front 14 Back 15 Side 16 Side 20 First Slip to OP outlet 30 Seal part 40 Seal part 50 2nd Slip to 60 3rd Slip to BS buffer section

Claims

1. A plurality of stacked sheets; a flexible film packaging bag containing the sheet; A first slit is formed on an upper surface of the film packaging bag and extends in a first direction; a second slit formed in a central portion of the upper surface and extending in a second direction intersecting the first direction; a third slit formed on the upper surface and extending in the second direction; the second slit and the third slit intersect with the first slit, the third slit is aligned with the second slit in the first direction, A sheet packaging body, wherein the length of the second slit and the length of the third slit are shorter than the length of the first slit.

2. A laminate of multiple sheets, a flexible film packaging bag containing the sheet; A first slit is formed on an upper surface of the film packaging bag and extends in a first direction; a second slit formed in a central portion of the upper surface and extending in a second direction intersecting the first direction; a third slit formed in a central portion of the upper surface and extending in a third direction intersecting the second direction; The second slit intersects with the first slit, the third slit intersects with the first slit and the second slit, A sheet packaging body, wherein the length of the second slit and the length of the third slit are shorter than the length of the first slit.

3. The sheet packaging body according to claim 1 or 2, wherein the first slit has a width in the second direction that is shorter than a length of the second slit.

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