Sheet packaging

Abstract

To provide a sheet package which exhibits an excellent taking-out property of a sheet.SOLUTION: A first slit 20, which is formed on an upper surface of a packaging bag for storing a plurality of stacked sheets and extends in a first direction, structures a sheet taking-out port. A second slit 50 which extends in a second direction parallel to the first direction structures a cushioning part to the taking-out port 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 bodies, 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 bodies have 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 in which the sheets are contained, 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 parallel to the first direction.

[0007] In this specification, a second direction parallel to a first direction means that the first direction and the second direction do not intersect (do not cross). In addition, in this case, "parallel" does not necessarily mean that the second direction is horizontal to the first direction, but also includes the case where the second direction is inclined with respect to the first direction. Note that, since the first direction and the second direction are parallel, the first slit extending in the first direction and the second slit extending in the second direction are arranged apart from each other (without crossing).

[0008] In the first aspect, a second slit extending in a second direction parallel to the first direction is formed on the upper surface of a packaging bag containing a sheet, in comparison with a first slit extending in a first direction. In this configuration, the first slit is opened in the first direction on the upper surface of the packaging bag, and the second slit is opened in the second direction parallel to the first direction.

[0009] In addition, the first slit opened in the first direction constitutes a sheet outlet, and the second slit opened in the second direction constitutes a buffer for the outlet constituted by the first slit. As a result, in the first aspect, even if stress is applied to the opened first slit (outlet) and its surroundings, the stress can be released (or dispersed) to the second slit (buffer).

[0010] 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).

[0011] In the first aspect, a second slit (buffer section) is present that extends in a second direction parallel to the first direction relative to the first slit (outlet). This 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 (outlet) during use. Therefore, according to the first aspect, the sheet holding force is maintained, and the sheet can be prevented from falling into the packaging bag during use (hereinafter, referred to as sheet falling).

[0012] 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).

[0013] A second aspect of the present invention is a sheet packaging body in which the second slit is shorter than the first slit. In the second aspect, by making the second slit shorter than 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.

[0014] A third 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 the 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.

[0015] The central part of the upper surface where such a second slit is formed is a part of the upper surface of the packaging bag where the stress acting on the first slit is concentrated. In the third aspect, by providing the second slit in such a central part of the upper surface, the stress acting on the opened first slit (dispensing opening) and its surroundings can be efficiently released (or dispersed) to the second slit (buffer part).

[0016] A fourth aspect of the present invention is a sheet packaging body in which the second slit has a plurality of first partial slits extending in the second direction, and the first partial slits are arranged in a third direction that intersects the first direction.

[0017] In this specification, the third direction intersecting with the first direction means that the first direction and the third direction intersect at a certain point. In addition, the intersection in this case is not limited to the case where the first direction and the third direction intersect perpendicularly (are orthogonal), but also includes the case where the first direction and the third direction intersect at a diagonal.

[0018] In a fourth aspect, the second slit is composed of a plurality of first partial slits extending in the second direction, and the first partial slits are arranged side by side in a third direction intersecting the first direction. With this configuration, in the fourth aspect, on the upper surface of the packaging bag, with respect to the first slit (taking-out port) opened in the first direction, the first partial slits (multiple buffer sections) of the second slit are opened side by side in the third direction intersecting the first direction.

[0019] As a result, in the fourth aspect, the stress applied to the opened first slit (outlet) and its surroundings can be released (or dispersed) to each of the first partial slits (multiple buffer parts) of the second slits aligned in the third direction. Also, the first slit (outlet) can be reliably deflected against the weight of the sheet held in the first slit (outlet) during use.

[0020] As a result, in the fourth 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 fourth 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 fourth 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.

[0021] A fifth aspect of the present invention is a sheet packaging body, in which the length of the first partial slits becomes shorter as the distance from the first slit increases in the third direction. In this specification, "shorter as the distance from the first slit increases in the third direction" means that the length of each of the first partial slits constituting the second slit gradually decreases as the distance from the first slit in the third direction increases.

[0022] Thus, in the fifth aspect, the length of each of the first partial slits that make up the second slit becomes shorter the further away from the first slit in the third direction, so that the stress applied to the opened first slit (access opening) and its surroundings can be efficiently released (or dispersed) in the third direction in which each of the first partial slits (multiple buffer sections) of the second slit are aligned.

[0023] As a result, in the fifth 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, even if there are only a few sheets left during use, the packaging bag can be prevented from lifting up when taking out the sheet.

[0024] In the fifth aspect, the length of each of the first partial slits constituting the second slit is shortened as it moves away from the first slit in the third direction, thereby preventing the first slit (outlet) from bending too much due to the weight of the sheet held in the first slit (outlet) during use. This allows the fifth aspect to maintain an appropriate holding force of the sheet by the first slit (outlet) during use, and reliably prevents the sheet from falling during use.

[0025] 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 fourth direction parallel to the first direction, the third slit being aligned on either side of the second slit and the first slit.

[0026] In this specification, the fourth direction parallel to the first direction means that the first direction and the fourth direction do not intersect (do not cross). In this case, "parallel" does not necessarily mean that the fourth direction is horizontal to the first direction, but also includes the case where the fourth direction is inclined to the first direction. The fourth direction may overlap with the second direction in which the second slits described above extend. Since the first direction and the fourth direction are parallel to each other, the first slits extending in the first direction and the third slits extending in the fourth direction are arranged apart from each other (without crossing).

[0027] In addition, the third slit being arranged between the second slit and the first slit means that the third slit is arranged so as to face the second slit, with the first slit interposed between the second slit and the third slit.

[0028] In the sixth aspect, such a third slit extending in the fourth direction is arranged on either side of the second slit and the first slit, so that the second slit and the third slit (two buffer sections) can be arranged on both sides of the first slit (dispensing opening). This allows the stress applied to the opened first slit (dispensing opening) and its surroundings to be released (or dispersed) to both sides of the first slit in the sixth aspect. Also, the first slit can bend in a balanced manner against the weight of the sheet held in the first slit during use.

[0029] With this configuration, in the sixth aspect, the first slit (dispensing opening) after opening can be opened more easily 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 down 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.

[0030] 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.

[0031] 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 such a center of the upper surface (the portion where the stress on the first slit is concentrated as described above), the stress on the first slit (dispensing opening) and its surroundings can be efficiently released (or dispersed) to the second slit and the third slit (two buffer parts), respectively.

[0032] A ninth aspect of the present invention is a sheet packaging body, wherein the third slit has a plurality of second partial slits extending in the fourth direction, and the second partial slits are arranged in a fifth direction intersecting the first direction.

[0033] In this specification, the fifth direction intersecting with the first direction means that the first direction and the fifth direction intersect at a certain point. In addition, the intersection in this case is not limited to the case where the first direction and the fifth direction intersect perpendicularly (orthogonally), but also includes the case where the first direction and the fifth direction intersect diagonally. In addition, the fifth direction may overlap with the third direction in which the multiple first partial slits constituting the second slit described above are arranged.

[0034] In a ninth aspect, the third slit is composed of a plurality of second partial slits extending in the fourth direction, and the second partial slits are arranged side by side in a fifth direction intersecting with the first direction. With this configuration, in the ninth aspect, the third slit is opened by lining up the second partial slits (a plurality of buffer sections) of the third slit in the fifth direction intersecting with the first direction with respect to the first slit (dispensing opening) that is opened in the first direction on the upper surface of the packaging bag.

[0035] As a result, in the ninth aspect, the stress acting on the opened first slit (outlet) and its surroundings can be released (or dispersed) to each of the second partial slits (multiple buffer parts) of the third slit aligned in the fifth direction. Also, the first slit (outlet) can be reliably deflected against the weight of the sheet held in the first slit (outlet) during use.

[0036] As a result, in the ninth 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 ninth 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 ninth 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.

[0037] A tenth aspect of the present invention is a sheet packaging body, in which the length of the second partial slits becomes shorter as they move away from the first slit in the fifth direction. In this specification, "shorter as they move away from the first slit in the fifth direction" means that the length of each of the second partial slits constituting the third slit gradually becomes shorter as the distance from the first slit in the fifth direction becomes longer.

[0038] In this way, in the tenth aspect, the length of each of the second partial slits that make up the third slit becomes shorter the further away from the first slit in the fifth direction, so that the stress applied to the opened first slit (access opening) and its surroundings can be efficiently released (or dispersed) in the fifth direction in which each of the second partial slits (multiple buffer sections) of the third slit are aligned.

[0039] As a result, in the tenth aspect, the opened first slit (dispensing opening) becomes easier to open with a fingertip, making it easier to take out the sheet from the packaging bag. Also, even if there are only a few sheets left during use, the packaging bag can be prevented from lifting up when taking out the sheet.

[0040] In the tenth aspect, by shortening the length of each of the first partial slits constituting the third slit the farther they are from the first slit in the fifth direction, it is possible to prevent the first slit (outlet) from bending too much due to the weight of the sheet held in the first slit (outlet) during use. This allows the tenth aspect to maintain an appropriate force for holding the sheet by the first slit (outlet) during use, and reliably prevents the sheet from falling during use. Effect of the Invention

[0041] 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]

[0042] [Figure 1] FIG. 1 is a diagram showing a sheet wrapping body according to an embodiment (first embodiment) of the present invention. [Diagram 2] 1 is a diagram showing a sheet wrapping body according to a first embodiment as viewed from above in a 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 the sheet wrapping body according to the second embodiment as viewed from above in the height direction. [Diagram 5] FIG. 11 is a diagram showing the sheet wrapping body according to the third embodiment as viewed from above in the 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. 1 is a diagram showing a conventional sheet packaging body. [Figure 8] 8 is a diagram showing a state in which the sheet wrapping body shown in FIG. 7 is used. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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).

[0058] 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.

[0059] Among these flexible films, polyethylene, polypropylene, polyethylene terephthalate, and the like are preferred from the viewpoints of flexibility, excellent handling, high sealability, 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.

[0060] 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.

[0061] 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.

[0062] 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).

[0063] 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).

[0064] The first slit 20 is formed on the upper surface 11 of the packaging bag 10. The first slit 20 is disposed in 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 (see FIGS. 1 and 2).

[0065] 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.

[0066] 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.

[0067] 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 parallel to the first direction (X direction). 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 the center 20a of the first slit 20 and accounts for approximately one-third of the entire first slit 20.

[0068] Moreover, the second direction (X direction) parallel to the first direction (X direction) means that the first direction (X direction) and the second direction (X direction) do not intersect (do not cross). In this case, "parallel" is not limited to the case where the second direction (X direction) is horizontal to the first direction (X direction), but also includes the case where the second direction (X direction) is inclined to the first direction (X direction). In this embodiment, the second direction in which the second slit 50 extends is approximately horizontal to the first direction (X direction) and corresponds to the longitudinal direction (X direction) of the sheet wrapping body 100 (see FIGS. 1 and 2).

[0069] The shape of the second slit 50 is not particularly limited. For example, To2, 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 (X direction), and the torn (opened) second slit 50 constitutes a buffer section BS for the take-out opening OP of the sheet ST.

[0070] 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 30%, more preferably 4 to 25%, and further preferably 5 to 22%.

[0071] Furthermore, the distance D1 from the first slit 20 to the second slit 50 is not particularly limited, but the ratio of the distance D1 to the length L2 of the second slit 50 is preferably 50 to 80%, more preferably 40 to 60%, and even more preferably 30 to 50%.

[0072] In the first embodiment, as described above, a first slit 20 extending in a first direction (X direction) is formed in 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 (X direction) parallel to 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 11c, the stress can be released (or dispersed) to the second slit 50 (buffer section BS) (see Fig. 3).

[0073] With this configuration, in the first embodiment, the stress applied to the first slit 20 (take-out opening OP) when the opened first slit 20 is opened 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 the sheet ST can be easily taken out from inside the packaging bag 10 (e.g., the first sheet of the sheet ST contained in the packaging bag 10 can be easily taken out).

[0074] In the first embodiment, there is a second slit 50 (buffer section BS) extending in a second direction (X direction) parallel to the first direction (X direction) relative to the first slit 20 (take-out opening OP). This allows the periphery 11c of the first slit 20 to bend (or the first slit 20 to 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).

[0075] Furthermore, in the first 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).

[0076] 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. And 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 11c.

[0077] 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 providing the second slit 50 in such central portion 11b of the upper surface 11, the stress applied to the opened first slit 20 (take-out opening OP) and its surroundings 11c can be efficiently released (or dispersed) to the second slit 50 (buffer portion BS).

[0078] 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, the sheet packaging body 100 according to the second embodiment further has a third slit 60. The third slit 60 is formed in the center portion 11b of the upper surface 11 of the packaging bag 10, and extends in a fourth direction (X direction) parallel to the first direction (X direction). The third slit 60 is the fourth slit constituting the sheet packaging body according to the present invention. 3 This is an example of a slit.

[0079] Here, the fourth direction (X direction) parallel to the first direction (X direction) means that the first direction (X direction) and the fourth direction (X direction) do not intersect (do not cross). In this case, parallel does not necessarily mean that the fourth direction (X direction) is horizontal to the first direction (X direction), but also means that the fourth direction (X direction) is inclined to the first direction (X direction). Furthermore, the fourth direction (X direction) may overlap with the second direction (X direction) in which the second slit 50 described above extends. In this embodiment, the fourth direction in which the third slit 60 extends is substantially horizontal to the first direction (X direction) and corresponds to the longitudinal direction (X direction) of the sheet wrapping body 100 (see FIG. 4).

[0080] 4, the third slit 60 is formed on the upper surface 11 of the packaging bag 10 so as to be aligned with the second slit 50 and the first slit 20 therebetween. Here, "aligned with the second slit 50 and the first slit 20" means that the third slit 60 is disposed to face the second slit 50 with the first slit 20 interposed between the second slit 50 and the third slit 60 (see FIG. 4).

[0081] The shape of the third slit 60 is not particularly limited, and for example, as shown in Fig. 4, it can be formed by forming a perforation on the upper surface 11 of the packaging bag 10. In the example shown in Fig. 4, by tearing the third slit 60 formed by the perforation, the upper surface 11 of the packaging bag 10 is opened in the fourth direction (X 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.

[0082] 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. 4. 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 30%, more preferably 4 to 25%, and further preferably 5 to 22%.

[0083] Furthermore, the distance D2 from the first slit 20 to the third slit 60 is not particularly limited, but the ratio of the distance D2 to the length L2 of the second slit 50 is preferably 50 to 80%, more preferably 40 to 60%, and even more preferably 30 to 50%.

[0084] In the second embodiment, such third slits 60 extending in the fourth direction (X direction) are arranged on either side of the second slit 50 and the first slit 20, so that the second slit 50 and the third slit 60 (two buffer sections BS) can be arranged on both sides of the first slit 20 (take-out opening OP). As a result, in the second embodiment, the stress applied to the opened first slit 20 (take-out opening OP) and its surroundings 11c can be released (or dispersed) to both sides of the first slit 20. Also, the first slit 20 can bend in a balanced manner against the weight of the sheet ST held in the first slit 20 during use.

[0085] With this configuration, in the second embodiment, the opened first slit 20 (take-out opening OP) becomes even easier to open with fingertips, making it even easier to take out the sheet ST from inside the packaging bag 10. Also, the holding force of the sheet ST by the first slit 20 (take-out opening OP) during use is further maintained, making it possible to further prevent the sheet ST from falling during use. Also, even if the remaining sheets ST become few during use, it is possible to further prevent the packaging bag 10 from lifting up when the sheet ST is taken out.

[0086] In the second 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 11c.

[0087] In the second 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 11c can be efficiently released (or dispersed) to the second slit 50 and the third slit 60 (two buffer portions BS).

[0088] Fig. 5 is a view of the sheet wrapping body according to the third embodiment as viewed from above in the height direction. In the sheet wrapping body 100 according to the third embodiment, as shown in Fig. 5, the second slit 50 has a plurality of first partial slits 51, 52, 53 extending in the second direction (X direction). The first partial slits 51, 52, 53 are arranged side by side in a third direction (Y direction) intersecting with the first direction (X direction). The number of the first partial slits constituting the second slit 50 is not limited to the three first partial slits 51, 52, 53 shown in Fig. 5, and may be two or more first partial slits.

[0089] Here, the third direction (Y direction) intersecting with the first direction (X direction) means that the first direction (X direction) and the third direction (Y direction) intersect at a certain point. In addition, the intersection in this case is not limited to the case where the first direction (X direction) and the third direction (Y direction) intersect perpendicularly (orthogonally), but also includes the case where the first direction (X direction) and the third direction (Y direction) intersect at a diagonal. In this embodiment, the third direction (Y direction) in which the first partial slits 51, 52, and 53 are aligned is perpendicular to the first direction (X direction) and corresponds to the depth direction (Y direction) of the sheet packaging body 100 (see FIG. 5).

[0090] With this configuration, in the third embodiment, the second slit 50 has first partial slits 51, 52, 53 arranged in the order of proximity from the first slit 20 in the third direction (Y direction) on the front surface 13 side of the upper surface 11 of the packaging bag 10 (see FIG. 5). As a result, in the third embodiment, the first partial slits 51, 52, 53 (multiple buffer sections BS) of the second slit 50 are opened aligned in the third direction (Y direction) intersecting the first direction (X direction) with respect to the first slit 20 (take-out opening OP) opened in the first direction (X direction) on the upper surface 11 of the packaging bag 10.

[0091] 5, in the third embodiment, lengths L21, L22, L23 of first partial slits 51, 52, 53 constituting the second slit 50 are all substantially the same length and are shorter than the length L1 of the first slit 20. The ratio of the length L2 of the second slit 50 (lengths L21, L22, L23 of the first partial slits 51, 52, 53) to the length L1 of the first slit 20 is preferably 3 to 25%, more preferably 4 to 20%, and further preferably 5 to 18%.

[0092] In addition, the distance D1 from the first slit 20 to the first partial slit 51, No. 1 partial slit 51, 52 Distance D1 between the first partial slit 52 , distance D1 between 53 andThe distance D1 is not particularly limited, but the ratio of the distance D1 to the length L2 of the second slit 50 is preferably 50 to 80%, more preferably 40 to 60%, and further preferably 30 to 50%.

[0093] In the sheet packaging body 100 according to the third embodiment, as shown in Fig. 5, the third slit 60 has a plurality of second partial slits 61, 62, 63 extending in a fourth direction (X direction). The second partial slits 61, 62, 63 are arranged side by side in a fifth direction (Y direction) intersecting with the first direction (X direction). The number of the second partial slits constituting the third slit 60 is not limited to the three second partial slits 61, 62, 63 shown in Fig. 5, and may be two or more second partial slits.

[0094] Here, the fifth direction (Y direction) intersecting with the first direction (X direction) means that the first direction (X direction) and the fifth direction (Y direction) intersect at a certain point. In addition, the intersection in this case is not limited to the case where the first direction (X direction) and the fifth direction (Y direction) intersect perpendicularly (orthogonally), but also includes the case where the first direction (X direction) and the fifth direction (Y direction) intersect diagonally. In addition, the fifth direction (Y direction) may overlap with the third direction (Y direction) in which the multiple first partial slits 51, 52, and 53 constituting the second slit 50 described above are arranged.

[0095] In this embodiment, the fifth direction (Y direction) in which the second partial slits 61, 62, and 63 are aligned is perpendicular to the first direction (X direction) and corresponds to the depth direction (Y direction) of the sheet wrapping body 100 (see FIG. 5). The fifth direction (Y direction) also corresponds to the third direction (Y direction) in which the first partial slits 51, 52, and 53 are aligned.

[0096] With this configuration, in the third embodiment, the third slit 60 has second partial slits 61, 62, 63 arranged in the order of proximity from the first slit 20 in the fifth direction (Y direction) on the back surface 14 side of the upper surface 11 of the packaging bag 10 (see FIG. 5). As a result, in the third embodiment, the second partial slits 61, 62, 63 (multiple buffer sections BS) of the third slit 60 are opened aligned in the fifth direction (Y direction) intersecting the first direction (X direction) with respect to the first slit 20 (take-out opening OP) opened in the first direction (X direction) on the upper surface 11 of the packaging bag 10.

[0097] 5, in the third embodiment, lengths L31, L32, L33 of second partial slits 61, 62, 63 constituting a third slit 60 are all substantially the same length and are shorter than the length L1 of the first slit 20. The ratio of the length L3 of the third slit 60 (lengths L31, L32, L33 of the second partial slits 61, 62, 63) to the length L1 of the first slit 20 is preferably 3 to 25%, more preferably 4 to 20%, and further preferably 5 to 18%.

[0098] In addition, the distance D2 from the first slit 20 to the second partial slit 61, No. 2 partial slits 61, 62 distance D2 between the second partial slit 62 , 63 Distance D2 and The distance D2 is not particularly limited, but the ratio of the distance D2 to the length L3 of the third slit 60 is preferably 50 to 80%, more preferably 40 to 60%, and further preferably 30 to 50%.

[0099] In the third embodiment, the stress acting on the opened first slit 20 (take-out opening OP) and its surroundings 11c can be released (or dispersed) to each of the first partial slits 51, 52, 53 (multiple buffer sections BS) of the second slit 50 aligned in the third direction (Y direction). Also, the first slit 20 (take-out opening OP) can be reliably deflected against the weight of the sheet ST held in the first slit 20 (take-out opening OP) during use.

[0100] As a result, in the third embodiment, the opened first slit 20 (dispensing opening OP) becomes even easier to open with fingertips, making it easier to take out the sheet ST from inside the packaging bag 10. Also, in the third embodiment, the holding force of the sheet ST by the first slit 20 (dispensing opening OP) during use is further maintained, making it possible to further prevent the sheet ST from falling during use. Also, in the third embodiment, even if the remaining sheets ST become small during use, it is possible to reliably prevent the packaging bag 10 from lifting up when the sheet ST is taken out.

[0101] Furthermore, in the third embodiment, the stress acting on the opened first slit 20 (outlet OP) and its periphery 11c can be released (or dispersed) to each of the second partial slits 61, 62, 63 (multiple buffer sections BS) of the third slit 60 aligned in the fifth direction (Y direction). Furthermore, the first slit 20 (outlet OP) can bend more reliably against the weight of the sheet ST held in the first slit 20 (outlet OP) during use.

[0102] As a result, in the third embodiment, the opened first slit 20 (dispensing opening OP) becomes even easier to open with fingertips, making it even easier to remove the sheet ST from inside the packaging bag 10. Also, in the third embodiment, the holding force of the sheet ST by the first slit 20 (dispensing opening OP) during use is further maintained, making it possible to further prevent the sheet ST from falling during use. Also, in the third embodiment, even if the remaining sheets ST become small during use, it is possible to more reliably prevent the packaging bag 10 from lifting up when removing the sheet ST.

[0103] Fig. 6 is a diagram of the sheet wrapping body according to the fourth embodiment as viewed from above in the height direction. In the sheet wrapping body 100 according to the fourth embodiment, as shown in Fig. 6, the first partial slits 51, 52, and 53 constituting the second slit 50 are arranged so as to become shorter as they move away from the first slit 20 in the third direction (Y direction).

[0104] Here, the term "shorter the distance in the third direction (Y direction)" from the first slit 20 means that the lengths L21, L22, L23 of each of the first partial slits 51, 52, 53 constituting the second slit 50 gradually become shorter as the distance from the first slit 20 in the third direction (Y direction) becomes longer.

[0105] Specifically, the relationship between the lengths L21, L22, and L23 of the first partial slits 51, 52, and 53 is such that the length L21 of the first partial slit 51 is longer than the length L22 of the first partial slit 52. long Moreover, the length L23 of the first partial slit 53 is shorter than the length L22 of the first partial slit 52. That is, the lengths of the first partial slits 51, 52, and 53 have the relationship L21>L22>L23.

[0106] The relationship between the lengths of the first partial slits 51, 52, and 53 is not particularly limited as long as the relationship is L21>L22>L23. For example, the ratio of the length L21 of the first partial slit 51 to the length L22 of the first partial slit 52 is preferably 5:1 to 1.3:1, more preferably 4:1 to 1.5:1, and even more preferably 3:1 to 1.5:1. The ratio of the length L22 of the first partial slit 52 to the length L23 of the first partial slit 53 is preferably 5:1 to 1.3:1, more preferably 4:1 to 1.5:1, and even more preferably 3:1 to 1.5:1.

[0107] In addition, in the sheet packaging body 100 according to the fourth embodiment, as shown in FIG. 6, the second partial slits 61, 62, 63 constituting the third slit 60 are arranged so as to become shorter as they move away from the first slit 20 in the fifth direction (Y direction).

[0108] Here, the term "shorter the distance in the fifth direction (Y direction)" from the first slit 20 means that the lengths L31, L32, L33 of each of the second partial slits 61, 62, 63 that constitute the third slit 60 gradually become shorter as the distance from the first slit 20 in the fifth direction (Y direction) becomes longer.

[0109] Specifically, the relationship between the lengths L31, L32, and L33 of the second partial slits 61, 62, and 63 is such that the length L31 of the second partial slit 61 is longer than the length L32 of the second partial slit 62. long Moreover, the length L33 of the second partial slit 63 is shorter than the length L32 of the second partial slit 62. That is, the lengths of the second partial slits 61, 62, 63 have a relationship of L31>L32>L33.

[0110] The relationship between the lengths of the second partial slits 61, 62, and 63 is not particularly limited as long as the relationship is L31>L32>L33. For example, the ratio of the length L31 of the second partial slit 61 to the length L32 of the second partial slit 62 is preferably 5:1 to 1.3:1, more preferably 4:1 to 1.5:1, and even more preferably 3:1 to 1.5:1. The ratio of the length L32 of the second partial slit 62 to the length L33 of the second partial slit 63 is preferably 5:1 to 1.3:1, more preferably 4:1 to 1.5:1, and even more preferably 3:1 to 1.5:1.

[0111] In the fourth embodiment, as described above, the lengths L21, L22, L23 of the first partial slits 51, 52, 53 constituting the second slit 50 become shorter as they move away from the first slit 20 in the third direction (Y direction). This allows the stress acting on the opened first slit 20 (take-out opening OP) and its surroundings 11c to be efficiently released (or dispersed) in the third direction (Y direction) in which the first partial slits 51, 52, 53 (multiple buffer sections BS) of the second slit 50 are arranged.

[0112] With this configuration, in the fourth embodiment, the opened first slit 20 (take-out opening OP) becomes easier to open with fingertips, and the sheet ST can be more easily taken out from inside the packaging bag 10. In addition, 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.

[0113] In the fourth embodiment, the lengths L21, L22, L23 of the first partial slits 51, 52, 53 constituting the second slit 50 are shortened as they move away from the first slit 20 in the third direction (Y direction), thereby preventing the first slit 20 (outlet OP) from bending too much due to the weight of the sheet ST held in the first slit 20 (outlet OP) during use. As a result, in the fourth embodiment, the holding force of the sheet ST by the first slit 20 (outlet OP) during use is appropriately maintained, and the sheet ST can be reliably prevented from falling during use.

[0114] In the fourth embodiment, as described above, the lengths L31, L32, L33 of the second partial slits 61, 62, 63 constituting the third slit 60 become shorter as they move away from the first slit 20 in the fifth direction (Y direction). This allows the stress acting on the opened first slit 20 (take-out opening OP) and its periphery 11c to be efficiently released (or dispersed) in the fifth direction (Y direction) in which the second partial slits 61, 62, 63 (multiple buffer sections BS) of the third slit 60 are aligned.

[0115] With this configuration, in the fourth embodiment, the opened first slit 20 (take-out opening OP) becomes easier to open with fingertips, and the sheet ST can be more easily taken out from inside the packaging bag 10. In addition, 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.

[0116] In addition, in the fourth embodiment, the lengths L21, L22, L23 of the first partial slits 51, 52, 53 constituting the third slit 60 are shortened as they move away from the first slit 20 in the fifth direction, thereby preventing the first slit 20 (outlet OP) from bending too much due to the weight of the sheet ST held in the first slit 20 (outlet OP) during use. As a result, in the fourth embodiment, the force of holding the sheet ST by the first slit 20 (outlet OP) during use is appropriately maintained, and the sheet ST can be reliably prevented from falling during use.

[0117] In addition, the first embodiment to No. In each sheet packaging body 100 according to the fourth embodiment, the first slit 20 may have a width (not shown) in the third direction (Y direction) and / or the fifth direction (Y direction). In this case, the width of the first slit 20 is preferably shorter than the length L2 of the second slit 50. In addition, the width of the first slit 20 is preferably shorter than the length L3 of the third slit 60.

[0118] When the width of the first slit 20 in the third direction (Y direction) is shorter than the length L2 of the second slit 50, an outlet OP whose width dimension in the third direction (Y direction) is shorter than the length L2 of the second slit 50 is formed on the upper surface 11 of the packaging bag 10 when the first slit 20 is opened. Also, when the width of the first slit 20 in the fifth direction (Y direction) is shorter than the length L3 of the third slit 60, an outlet OP whose width dimension in the fifth direction (Y direction) is shorter than the length L3 of the third slit 60 is formed when the first slit 20 is opened.

[0119] By forming the first slit 20 as the outlet OP having such a width, the opened first slit 20 (outlet OP) becomes even easier to open. Therefore, by forming the first slit 20 as having such a width, it becomes even easier to take out the sheet ST from the outlet OP formed 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).

[0120] In addition, by having the first slit 20 have such a width, the frictional force (or resistance force) applied to the first slit 20 (take-out opening OP) when the sheet ST is taken out (or pulled out) from the first slit 20 (take-out opening OP) during use is reduced. (First slit 20 has the width described above) According to this, even if the remaining sheet ST becomes small during use, the packaging bag 10 can be reliably prevented from being lifted up. EXAMPLES

[0121] 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.

[0122] [Sheet packaging (test specimen)] A sheet package 100 was prepared as a test specimen, in which a sheet stack SL, in which multiple sheets ST were stacked, was packaged in a packaging bag 10 (see Figs. 1 and 7). For the sheet stack 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 alternately folded and stacked so that they could be pulled out one by one in a pop-up style. In addition, the sheet stack SL was stacked in the stacking direction. (SD direction) The sheet wrapping body 100 was placed in the packaging bag 10 so that the width of the sheet wrapping body 100 was in the height direction (Z direction) of the sheet wrapping body 100 (see Figs. 1 and 7). The packaging bag 10 was made of polyethylene (PE) having a thickness of 50 μm. The packaging bag 10 was wrapped in a caramel wrapper at both ends (sealed portions 30, 40 were formed). The dimensions of the sheet wrapping 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). A first slit 20 (perforation) extending in the first direction (X direction) was formed on the upper surface 11 of the packaging bag 10. Dimensions of the first slit 20 (perforation) (Length L1) was set to about 185 mm in the first direction (X direction).

[0123] [Pull-out resistance] The pull-out resistance of the sheet packaging body 100 was confirmed. In checking the pull-out resistance, the above-mentioned test specimen (sheet packaging body 100) was placed on a flat placement surface, and about half of the first set of tissue paper (sheet ST) was pulled out from the outlet (first slit 20) of the packaging bag 10, and the upper end of the pulled-out sheet ST (the central part 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 part 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 of11 The resistance (unit: kgf) when pulling tissue paper perpendicular to the 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.

[0124] [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

[0125] [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: The seat ST falls 1 to 3 times 3: The seat ST falls 4 to 6 times 2: The seat ST falls 7 to 9 times 1: The seat ST has fallen 10 or more times

[0126] [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

[0127] Examples and comparative examples will be described below.

[0128] [Example 1] In the sheet packaging body 100, as shown in Figs. 1 and 2, a second slit 50 extending in a second direction (X direction) parallel to the first direction (X direction) was formed in the central portion 11b of the upper surface 11 of the packaging bag 10. The length L2 of the second slit 50 was about 20 mm in the second direction (X direction). The distance D1 from the first slit 20 to the second slit 50 was about 5 mm in the third direction (Y direction). The pull-out resistance, take-out property (initial), anti-sagging property, and anti-lifting property were evaluated for this test specimen. The results are shown in Table 1.

[0129] [Example 2] In the sheet packaging body 100, the second slit 50 has first partial slits 51, 52, 53 extending in the second direction (X direction), the first partial slits 51, 52, 53 are arranged side by side in a third direction (Y direction) intersecting the first direction (X direction), the lengths L21, L22, L23 of the first partial slits 51, 52, 53 are about 20 mm in the second direction (X direction), and the distances from the first slit 20 to the first partial slits 51, 52, 53 are about 5 mm, about 10 mm, and about 15 mm in the third direction (Y direction), respectively. A test specimen was prepared and evaluated in the same manner as in Example 1. The results are shown in Table 1.

[0130] [Example 3] In the sheet packaging body 100, the first partial slits 51, 52, and 53 constituting the second slit 50 were arranged so as to become shorter as they moved away from the first slit 20 in the third direction (Y direction), and the lengths L21, L22, and L23 of the first partial slits 51, 52, and 53 were set to about 30 mm, about 20 mm, and about 10 mm, respectively, in the second direction (X direction). A test specimen was prepared and evaluated in the same manner as in Example 2. The results are shown in Table 1.

[0131] [Example 4] In the sheet packaging body 100, a third slit 60 extending in a fourth direction (X direction) parallel to the first direction (X direction) was further formed in the central portion 11b of the upper surface 11 of the packaging bag 10 as shown in Fig. 4, the length L3 of the third slit 60 was set to about 20 mm in the second direction (X direction), and the distance D2 from the first slit 20 to the third slit 60 was set to about 5 mm in the third direction (Y direction). A test specimen was produced and evaluated in the same manner as in Example 1. The results are shown in Table 1.

[0132] [Example 5] In the sheet packaging body 100, a test specimen was prepared and evaluated in the same manner as in Example 4, except that the length L2 of the second slit 50 was set to about 40 mm in the second direction (X direction) and the length L3 of the third slit 60 was set to about 40 mm in the fourth direction (X direction). The results are shown in Table 1.

[0133] [Example 6] In the sheet packaging body 100, as shown in Fig. 5, second partial slits 61, 62, and 63 extending in the fourth direction (X direction) are further provided as the third slit 60 in the central portion 11b of the upper surface 11 of the packaging bag 10, the second partial slits 61, 62, and 63 are arranged side by side in the fifth direction (Y direction) intersecting with the first direction (X direction), the lengths L31, L32, and L33 of the second partial slits 61, 62, and 63 are about 20 mm in the fourth direction (X direction), and the distances from the first slit 20 to the first partial slits 51, 52, and 53 are about 5 mm, about 10 mm, and about 15 mm in the fifth direction (Y direction), respectively. A test specimen was prepared and evaluated in the same manner as in Example 2. The results are shown in Table 1.

[0134] [Example 7] 5, in the sheet packaging body 100, the second partial slits 61, 62, and 63 constituting the third slit 60 are arranged so as to become shorter as they move away from the first slit 20 in the fifth direction (Y direction), and the lengths L31, L32, and L33 of the second partial slits 61, 62, and 63 are about 30 mm, about 20 mm, and about 10 mm, respectively, in the fourth direction (X direction). A test specimen was prepared and evaluated in the same manner as in Example 6. The results are shown in Table 1.

[0135] [Comparative Example 1] 1 and 2, the sheet wrapping body 100 was evaluated in the same manner as in Example 1, except that the second slit 50 was not formed (see FIGS. 7 and 8). The results are shown in Table 1.

[0136] [Table 1]

[0137] 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 (X direction) parallel to the first direction (X direction) was further formed in the central portion 11b of the upper surface 11 of the packaging bag 10, had good pull-out resistance, take-out property (initial), anti-sagging property, and anti-lifting property (Examples 1 to 7).

[0138] Moreover, the sheet packaging body 100 in which a plurality of first partial slits 51, 52, 53 extending in the second direction (X direction) were formed as the second slits 50 had both improved pull-out resistance and take-out ease (initial) (Examples 2 and 3). Moreover, the sheet packaging body 100 in which the first partial slits 51, 52, 53 constituting the second slits 50 were arranged so as to become shorter as they moved away from the first slit 20 in the third direction (Y direction) had further improved pull-out resistance (Example 3).

[0139] Moreover, the sheet packaging body 100 further having a third slit 60 extending in a fourth direction (X direction) parallel to the first direction (X direction) formed therein had improved pull-out resistance (Examples 4 to 7). Furthermore, the sheet packaging body 100 having a plurality of second partial slits 61, 62, 63 extending in the fourth direction (X direction) formed as the third slit 60 had improved pull-out resistance and take-out ease (initial stage) (Examples 6 and 7).

[0140] On the other hand, in the sheet packaging body 100 in which neither the second slit 50 nor the third slit 60 was formed, the pull-out resistance, the take-out property (initial stage), the anti-sagging property, and the anti-lifting property were not good (Comparative Example 1).

[0141] 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 parallel to the first direction. and It was found that the sheet packaging body having the above structure was excellent in ease of removing the sheet.

[0142] 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]

[0143] 100 Sheet packaging ST Sheet (hygienic tissue paper) SL Sheet laminate 10 packaging bags 11 Top side 11a center 11b Central part Around 11c 12 Bottom side 13 Front 14 Back 15 Side 16 Side 20 First Slit 20a Center OP outlet 30 Seal part 40 Seal part 50 Second Slit 51, 52, 53 First partial slit 60 3rd Slit 61, 62, 63 Second partial slit BS buffer section

Claims

1. A plurality of stacked sheets; A packaging bag containing the sheet; A first slit is formed on an upper surface of the 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 parallel to the first direction; The length of the second slit is shorter than the length of the first slit, A sheet packaging body, wherein a ratio of the length of the second slit to the length of the first slit is 5 to 22%.

2. the second slit has a plurality of first partial slits extending in the second direction, The sheet packaging body according to claim 1 , wherein the first partial slits are aligned in a third direction intersecting the first direction.

3. The sheet packaging body according to claim 2 , wherein a length of the first partial slit decreases as the distance from the first slit in the third direction increases.

4. a third slit formed on the upper surface and extending in a fourth direction parallel to the first direction; The sheet packaging body according to claim 1 , wherein the third slit is arranged between the second slit and the first slit.

5. The sheet packaging body according to claim 4 , wherein a length of the third slit is shorter than a length of the first slit.

6. The sheet packaging body according to claim 4 or 5, wherein the third slit is formed in a central portion of the upper surface.

7. the third slit has a plurality of second partial slits extending in the fourth direction, The sheet packaging body according to claim 4 , wherein the second partial slits are aligned in a fifth direction intersecting the first direction.

8. The sheet packaging body according to claim 7 , wherein a length of the second partial slit decreases as the second partial slit moves away from the first slit in the fifth direction.

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