Sheet packaging body

Abstract

A sheet packaging body is provided with: a plurality of stacked sheets; a packaging bag in which the sheet material is accommodated; and a take-out opening which is formed in the upper surface of the packaging bag and through which the sheet is taken out, the take-out opening having a slit extending in a first direction and an opening continuous with at least one end of the slit, the opening being formed in a second direction intersecting the first direction. The width of the opening portion is larger than the width of the slit.

Description

[0001] This application is a divisional application of Chinese patent application No. 201980078543.6 entitled "Sheet Packaging Body", filed on November 19, 2019. Technical Field

[0002] This invention relates to sheet packaging. Background Technology

[0003] It is now common practice to store tissues and other toilet paper in cardboard boxes (thick cardboard cartons). However, cardboard boxes of toilet paper can be bulky during handling or storage, and there are issues with waste after use, environmental impact, and cost. Therefore, in recent years, there has been an increasing demand for sheet packaging, which stores sheet tissues and other materials in flexible film bags. For example, Patent Document 1 discloses a film packaging in which a slit (perforation) for removing the toilet paper is formed on the flexible film bag containing the toilet paper (see reference). Figure 8 ).

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2016-188092 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] However, the openings created by perforations or other slits in existing sheet packaging are narrow, making it difficult to open when removing the sheet from the packaging. Furthermore, the sheet is easily caught in the opening when being removed, causing damage (see reference). Figure 8 Furthermore, with the slit-formed opening in the film packaging bag, the sheet's holding force may decrease during use, causing the sheet to fall into the packaging bag. Additionally, compared to cardboard boxes, film packaging bags are lighter; therefore, if less sheet remains during use, the film packaging bag may be picked up along with the sheet when it is removed. Thus, existing sheet packaging presents problems with sheet removal.

[0009] The problem to be solved by the present invention is to provide a sheet packaging body with excellent sheet removal.

[0010] means for solving problems

[0011] A first aspect of the invention is a sheet packaging body comprising: a plurality of stacked sheets; a packaging bag containing the sheets; and an outlet formed on the upper surface of the packaging bag for removing the sheets; the outlet having a slit extending in a first direction and an opening continuous with at least one end of the slit, wherein the width of the opening is greater than the width of the slit in a second direction intersecting the first direction.

[0012] The effects of the invention

[0013] According to one aspect of the present invention, a sheet packaging body is provided, which has excellent sheet removal. Attached Figure Description

[0014] Figure 1 This is a diagram showing a sheet packaging body according to an embodiment (first embodiment) of the present invention.

[0015] Figure 2 This is a diagram of the sheet packaging body of the first embodiment viewed from above in the height direction.

[0016] Figure 3 Is Figure 2 The image shows an enlarged view of a portion of the sheet packaging material with an exit point.

[0017] Figure 4 This is a diagram showing the usage state of the sheet packaging body according to the first embodiment.

[0018] Figure 5 This is an enlarged view of a portion of the outlet in a sheet packaging body, which is a variation of the first embodiment.

[0019] Figure 6 This is a diagram of the sheet packaging body of the second embodiment viewed from above in the height direction.

[0020] Figure 7 Is Figure 6 The image shows an enlarged view of a portion of the sheet packaging material with an exit point.

[0021] Figure 8 This is a diagram showing an existing sheet packaging. Detailed Implementation

[0022] With reference to the accompanying drawings, we can understand the embodiments of the present invention. Figure 1 The following explanations are detailed. In the following descriptions, common parts across the figures will be given the same symbols and their descriptions will be omitted. Furthermore, for ease of understanding, the scales of the components in the figures may differ from the actual scales.

[0023] Figure 1This is a diagram illustrating a sheet packaging body according to a first embodiment of the present invention. Figure 2 This is a diagram of the sheet packaging body of the first embodiment viewed from above in the height direction. Figure 3 Is Figure 2 The image shows an enlarged view of a portion of the sheet packaging material with an exit point. Figure 4 This is a diagram showing the usage state of the sheet packaging body according to the first embodiment. Additionally, in Figures 1-4 In the sheet packaging body 100 shown, the length direction (left-right direction) is designated as the X direction, the depth direction (front-back direction) is designated as the Y direction, and the height direction (up-down direction) is designated as the Z direction. Hereinafter, the sheet packaging body 100 of this embodiment will be described.

[0024] Regarding the sheet packaging body 100 of the first embodiment, such as Figure 1 As shown, it includes a sheet ST, a packaging bag 10, and an outlet 20. The sheet packaging body 100 is one example of a sheet packaging body according to the present invention. Furthermore, the sheet ST, the packaging bag 10, and the outlet 20 are each examples of the sheet, packaging bag, and outlet that constitute the sheet packaging body according to the present invention.

[0025] Sheet ST is housed in packaging bag 10 as a stack SL composed of multiple sheets of sheet ST. The stack SL of sheet ST is housed in packaging bag 10 with the stacking direction (SD direction) of sheet ST aligned with the height direction (Z direction). The stack SL of sheet ST is designed so that sheet ST can be extracted one set at a time through the extraction port 20 (OP) formed on packaging bag 10 (see reference). Figure 4 ).

[0026] The sheet stack SL is not limited to simply stacking multiple sheets of ST; it can also be stacked with each sheet of ST folded in place. Furthermore, it can be stacked with each sheet of ST folded into each other (a so-called pop-up type sheet stack SL). From the viewpoint of removing the sheets of ST one group at a time, the pop-up type sheet stack SL is preferred.

[0027] Furthermore, the dimensions of the laminate SL of sheet ST can be manufactured as follows: a length of 80–250 mm in the longitudinal direction (X direction) of the sheet packaging 100, a length of 50–130 mm in the depth direction (Y direction) orthogonal to the longitudinal direction (X direction) of the sheet packaging 100 in top view, and a length of 10–90 mm in the height direction (Z direction). Such a laminate of thin paper can be manufactured, for example, by a rotary or multi-stand interfolder.

[0028] The application of sheet ST is not particularly limited; for example, it can also be used for tissues such as facial tissues, toilet paper, kitchen paper towels, and paper towels. These tissues also include tissues containing moisturizing ingredients (e.g., moisturizing facial tissues). Furthermore, the application of the tissues constituting sheet ST is not particularly limited; for example, it can be used for industrial, household, or portable applications. Additionally, the sheet packaging body 100 of this embodiment is suitable for use with household facial tissues.

[0029] The number of layers (ply) of the sheet ST is not particularly limited, and it can be made into one or more layers, preferably two layers (two sheets overlapping). In addition, the shape of the sheet ST is not particularly limited, but for example, it is preferred to have a rectangular shape in the folded state of the two-layer sheet.

[0030] The material of the sheet ST is not particularly limited, but sheets such as paper, non-woven fabric, or cloth can be used, with paper being the preferred material. Furthermore, when the sheet ST is paper, a base paper with pulp as the main raw material is used. The pulp composition can be any known composition used in paper sheets. For example, the pulp mixing ratio is set to 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass.

[0031] Furthermore, the pulp composition in the sheet ST (paper sheet) can include, for example, softwood pulps such as NBKP (softwood groundwood pulp) and NUKP (softwood unbleached pulp), and hardwood pulps such as LBKP (hardwood groundwood pulp) and LUKP (hardwood unbleached pulp) in any ratio. A pulp composition with a higher proportion of softwood pulp relative to hardwood pulp is particularly preferred. The ratio of softwood pulp to hardwood pulp is preferably 10:90 to 80:20. Additionally, waste paper pulp can also be used as a component in the pulp composition of the sheet ST (paper sheet).

[0032] There is no particular limit to the weight per unit area of ​​sheet ST, but it is expected to correspond to the number of layers, and in the case of paper, it should be 10 g / m². 2 Above and 80g / m 2 The following value is 20g / m² for nonwoven fabrics. 2Above and 100g / m 2 The following is a summary of the measurements. Additionally, the weight per unit area is determined according to JIS P 8124.

[0033] Furthermore, the thickness of the sheet ST (paper sheet) is not particularly limited, but for example, a paper thickness measured under conditions specified in JIS P 8111 (1998) can be used. For example, the paper thickness of each two layers of paper constituting the sheet ST is preferably 50 μm or more and 500 μm or less, more preferably 60 μm or more and 330 μm or less.

[0034] In addition, the paper thickness is measured by fully adjusting the humidity of the test piece under the conditions specified in JIS P 8111 (1998), and then measuring it under the same conditions using a "PEACOCK G type" (manufactured by Ozaki Seisakusho) dial thickness gauge in a two-layer state. Specifically, after confirming that there is no dust or debris between the plunger and the measuring stage, the plunger is lowered onto the measuring stage, and the scale of the dial thickness gauge is moved to coincide with the zero point. Next, the plunger is raised and the test sample is placed on the test stage, and then the plunger is slowly lowered while the measured value is read. At this time, only the plunger is loaded. The plunger terminal is made of metal and its 10mm diameter circular flat surface is perpendicular to the paper surface. Furthermore, the load during paper thickness measurement is approximately 70gf. In addition, the paper thickness is set as the average value obtained from 10 measurements.

[0035] In addition, embossing can be applied to the paper sheets constituting the sheet ST. Such embossing processes include: applying an embossing plate (not shown) to both ends of the paper sheet using known contact embossing methods, edge embossing methods, etc., and stacking multiple paper sheets; applying pins (not shown) to the paper sheet using known pin embossing methods to form pin embossing on one surface of the paper sheet; and heating and melting a water-soluble adhesive (such as starch) to bond the stacked paper sheets (not shown) using known embossing methods, thereby forming embossing, etc.

[0036] The packaging bag 10 constituting the sheet packaging body 100 is formed using a flexible film. Furthermore, the packaging bag 10 is manufactured using caramel packaging. Specifically, the two ends of the tubular flexible film are folded and glued (sealed) to form sealing portions 30 and 40. However, the packaging form of the sheet packaging body 100 is not limited to this caramel packaging; heat sealing can also be used to seal the two ends or one end of the tubular flexible film into a gusset shape (using so-called pillow packaging).

[0037] Furthermore, there are no particular limitations on the material of the flexible film forming the packaging bag 10, and resins such as polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer (EVA), and polyamide (PA) can be used.

[0038] Furthermore, among these flexible films, polyethylene, polypropylene, and polyethylene terephthalate are preferred from the viewpoints of flexibility, excellent processability, high sealing performance during heat sealing, and low cost. Moreover, polyethylene is preferred from the viewpoints of being odorless, waterproof, chemically resistant, and capable of mass production at low cost. High-density polyethylene and low-density polyethylene can be used as polyethylene. Furthermore, polypropylene is preferred from the viewpoints of being strong, easy to shape, and providing good color development or gloss during printing.

[0039] The form of the flexible film forming the packaging bag 10 is not particularly limited. It can be a single-layer film in which the above-mentioned resin is formed as a single layer, a laminated film formed by stacking the above-mentioned resins, or a mixed film formed by a mixture of the above-mentioned two or more resins.

[0040] The thickness of the flexible film forming the packaging bag 10 is not particularly limited, but is preferably 20 μm or more and 100 μm or less, more preferably 25 μm or more and 70 μm or less. Setting the thickness of the flexible film to 20 μm or more ensures sufficient strength for the packaging bag 10 containing the sheet ST. Furthermore, setting the thickness of the flexible film to 100 μm or less ensures the flexibility and lightweight of the packaging bag 10, and reduces costs.

[0041] Furthermore, the material forming the packaging bag 10 is not limited to the aforementioned resin materials such as flexible films, and paper materials can also be used. In addition, the material forming the packaging bag 10 can also be biodegradable materials (biodegradable plastics, biodegradable paper, etc.) or biomass materials (renewable organic resources derived from organisms, such as biomass films other than fossil resources).

[0042] In this embodiment, the packaging bag 10 has an upper surface 11, a lower surface 12, a front surface 13, a back surface 14, a side surface 15, and a side surface 16, and is a laminated body SL that houses the sheet material ST. Additionally, in the sheet packaging body 100, as... Figure 1 As shown, the upper surface 11 and the lower surface 12 are opposite each other in the vertical direction (Z direction), the front surface 13 and the back surface 14 are opposite each other in the front-back direction (Y direction), and the side surface 15 and the side surface 16 are opposite each other in the horizontal direction (X direction).

[0043] In the packaging bag 10, the upper surface 11 is positioned above in the vertical direction (Z direction), and the lower surface 12 is positioned below in the vertical direction (Z direction). Furthermore, the front surface 13 is positioned at the front in the front-back direction (Y direction), and the back surface 14 is positioned at the rear in the front-back direction (Y direction). Further, the side surface 15 is positioned to the left in the horizontal direction (X direction), and the side surface 16 is positioned to the right in the horizontal direction (X direction). Furthermore, the side surfaces 15 and 16 are continuous to any one of the upper surface 11, lower surface 12, front surface 13, and back surface 14 (see reference). Figure 1 ).

[0044] Furthermore, an outlet 20 is formed on the upper surface 11 of the packaging bag 10. The outlet 20 is disposed at the 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 the first direction (X direction). In this embodiment, the first direction (X direction) in which the outlet 20 extends corresponds to the longitudinal direction (X direction) of the sheet packaging body 100.

[0045] The form of the outlet 20 is not particularly limited, for example, such as Figure 1 , Figure 2 As shown, it can be constructed by forming perforations M on the upper surface 11 of the packaging bag 10. Figure 1 , Figure 2 In the example shown, the opening 20 formed by the perforation M is broken, thereby opening the upper surface 11 of the packaging bag 10 in the first direction (X direction). The broken (opened) opening 20 then forms the opening OP of the sheet ST (see reference). Figure 4 ).

[0046] Furthermore, in the first direction (X direction), the size (length L2) of the outlet 20 (perforation M) can be arbitrarily set to correspond to the size (length L1) of the sheet ST to be removed. For example, the difference between the length L2 of the outlet OP in the left-right direction (X direction) and the width dimension (length L1) of the sheet ST is -100 mm or more and 0 mm or less, preferably -80 mm or more and 0 mm or less, more preferably -70 mm or more and -10 mm or less. If these lengths and dimensions are converted into a ratio of the length L2 of the outlet OP to the width dimension (length L1) of the sheet ST in the left-right direction (X direction), it is 100% or less, preferably 80% or less, more preferably 10% or more and 75% or less.

[0047] In the sheet packaging 100 of this embodiment, the take-out port 20 has a slit 21 and an opening 22. The slit 21 and opening 22 are formed using continuous perforations M. The continuous perforations M show that the cut portions C constituting the perforations M are alternately arranged with connecting portions T. Here, the cut portions C show the portion on the upper surface 11 of the packaging bag 10 that is intermittently cut; the connecting portions T show the uncut portion between two adjacent cut portions C (see reference). Figure 3 ).

[0048] Furthermore, in the perforation M, the lengths of the cutting portions C and the connecting portions T are arbitrary. For example, the length of each cutting portion C can be set to 0.8 mm or more and 5 mm or less, preferably 1.5 mm or more and 4.5 mm or less, and more preferably 2.5 mm or more and 3.5 mm or less. In addition, the length of each connecting portion T can be set to 0.3 mm or more and 5 mm or less, preferably 0.4 mm or more and 2 mm or less, and more preferably 0.5 mm or more and 1.5 mm or less.

[0049] Slit 21 Figure 1 , Figure 2 As shown, it is formed by a straight line extending in the first direction (X direction). Furthermore, the shape of the slit 21 is not limited to a straight line; it can also be an elongated rectangle, etc. Additionally, when the slit 21 is a straight line, it is formed by creating one perforation; when the slit 21 is an elongated rectangle, it is formed by creating two perforations arranged in the second direction (Y direction). Furthermore, the size of the slit 21 is not particularly limited; for example, in the upper surface 11 of the packaging bag 10, the length L3 of the slit 21 in the first direction (X direction) is approximately one-third the size (length L1) of the sheet ST.

[0050] The opening 22 is continuous (or connected) to at least one end 21a of the slit 21. In this embodiment, as... Figure 1 , Figure 2 As shown, the opening 22 is continuous with each end 21a of the two ends 21a, 21a of the slit 21. However, the opening 22 being continuous with at least one end 21a of the slit 21 is not limited to this form; the opening 22 can also be located at either end 21a of the two ends 21a, 21a of the slit 21 and be continuous with that end 21a. Furthermore, the shape of the opening 22 is not particularly limited; for example, it can be made into a circular, triangular, quadrilateral, rhomboid, sector, or polygonal shape.

[0051] Furthermore, in this embodiment, in the second direction (Y direction) intersecting the first direction (X direction), the width W3 of the opening 22 is larger than the width W2 of the slit 21. Here, the second direction (Y direction) corresponds to the depth direction (Y direction) of the sheet packaging 100 (see reference). Figure 1 , Figure 2 Furthermore, any width of the slit 21 and opening 22 constituting the outlet 20, W2 and W3, respectively, represents the width of the second direction (Y direction) intersecting the first direction (X direction).

[0052] Furthermore, the width W2 of the slit 21 and the width W3 of the opening 22 are arbitrary, as long as the width W3 of the opening 22 is larger than the width W2 of the slit 21. For example, the width W2 of the slit 21 is 7% or less of the size (width W1) of the sheet ST, preferably 6% or less, and more preferably 5% or less. In addition, the width W3 of the opening 22 is 8% or more and 30% or less of the size (width W1) of the sheet ST, preferably 10% or more and 29% or less, and more preferably 14% or more and 28% or less.

[0053] Furthermore, the sheet packaging body 100 of this embodiment is as follows: Figures 1-3 As shown, in the dispensing port 20, the width W3 of the opening 22 increases as it moves further away from the slit 21 in the first direction (X direction). That is, the dispensing port 20 formed on the upper surface 11 of the packaging bag 10 gradually increases in width from the central portion 20a (slit 21) side of the dispensing port 20 towards the end 20b (opening 22) side of the dispensing port 20 (see reference). Figure 2 , Figure 3 Specifically, the opening 22 has two inclined portions 22a, and the spacing between the two inclined portions 22a in the second direction (Y direction) increases from the central portion 20a side of the outlet 20 toward the end portion 20b side of the outlet 20.

[0054] Furthermore, in the sheet packaging 100 of this embodiment, as... Figure 2 , Figure 3 As shown, the opening 22 of the dispensing port 20 has a curved portion 22b that is convex in the direction away from the slit 21 in the first direction (X direction). That is, the dispensing port 20 formed on the upper surface 11 of the packaging bag 10 is curved into a convex shape at the end 20b of the dispensing port 20 where the opening 22 is provided, from the central portion 20a (slit 21) side of the dispensing port 20 toward the end 20b (opening 22) side of the dispensing port 20 (see reference). Figure 2 , Figure 3 In addition, in this embodiment, the curved portion 22b of the opening 22 is a part of the opening 22 that is bent into a convex shape, but it is also possible that the entire opening 22 is bent into a convex shape.

[0055] Furthermore, in this embodiment, the curved portion 22b of the opening 22 is formed using continuous cuts CC. That is, the curved portion 22b of the opening 22 is formed using only cut portions without any connecting portions (see reference). Figure 3 ).

[0056] In the sheet packaging body 100 of the first embodiment, as described above, the outlet 20 formed on the upper surface 11 of the packaging bag 10 is provided with openings 22, 22 continuous with the two ends 21a, 21a of the slit 21. These openings 22 have a width W3 larger than the width W2 of the slit 21. Therefore, when the tissue paper (sheet ST) is pulled out from the packaging bag 10, the sheet ST is less likely to get stuck in the outlet 20, and the sheet ST is less likely to break (see reference). Figure 4 ).

[0057] Specifically, in the existing sheet packaging body 100 that uses only the slit 21 to form the outlet 20, because the outlet 20 is narrow, the sheet ST tends to get stuck at the end 20b of the outlet 20, and there is a tendency for the sheet ST to rub against the end 20b of the outlet 20 (see reference). Figure 8 In contrast, in the sheet packaging 100 of this embodiment, the width of the end portion 20b (opening 22) is increased relative to the central portion 20a (slit 21) of the dispensing opening 20 formed on the upper surface 11 of the packaging bag 10 (see reference). Figures 1-3 ).

[0058] Therefore, even if the outlet 20 is narrow, the sheet ST is less likely to get stuck at the end 20b of the outlet 20, thus reducing friction between the end 20b of the outlet 20 and the sheet ST. Therefore, according to the sheet packaging body 100 of this embodiment, when the sheet ST is pulled out, it is possible to prevent the sheet ST from getting stuck at the end 20b of the outlet 20 or to prevent the sheet ST from breaking (see reference). Figure 4 ).

[0059] Furthermore, in this embodiment, the opening 22, which is continuous with the ends 21a, 21a of the slit 21, can form a buffer portion in the dispensing port 20. Therefore, when the slit 21 of the opened dispensing port 20 is opened with a finger, the stress applied to the dispensing port 20 and its surroundings can be released (or dispersed) to the opening 22 (buffer portion). Thus, in the sheet packaging 100 of this embodiment, it is easy to open the opened slit 21 with a finger, and it is easy to remove the sheet ST (the first sheet ST, etc., contained in the packaging bag 10) from the packaging bag 10 (see [reference]). Figure 4 ).

[0060] Furthermore, in this embodiment, as described above, there is an opening 22 (buffer portion) continuous with at least one end 21a of the slit 21. Therefore, the periphery of the slit 21 can flex (or deform with the weight of the sheet ST held in the central portion 20a (slit 21) of the dispensing port 20) during use. Thus, in the sheet packaging body 100 of this embodiment, the holding force of the sheet ST in the dispensing port 20 can be maintained, and the sheet ST is prevented from falling into the packaging bag 10 during use (hereinafter referred to as the falling of the sheet ST) (see reference). Figure 4 ).

[0061] Furthermore, in this embodiment, as described above, the friction between the end 20b of the dispensing port 20 and the sheet ST is mitigated, making the end 20b of the dispensing port 20 of the sheet packaging 100 less prone to breakage during use. Consequently, the reduction in the holding force of the sheet ST in the dispensing port 20 is suppressed, thus preventing the sheet ST from falling into the packaging bag 10 during use (hereinafter referred to as sheet ST falling in) (see reference). Figure 4 ).

[0062] Furthermore, in this embodiment, when using the sheet packaging body 100, when the sheet ST is taken out (or pulled out) from the slit 21 of the dispensing port 20, the frictional force (or resistance) applied to the slit 21 can be released (or dispersed) to the opening 22 (buffer portion). Therefore, in this embodiment, even if less sheet ST remains during use (i.e., the weight of the sheet packaging body 100 becomes lighter), it is possible to prevent the sheet ST from being picked up along with the packaging bag 10 (hereinafter referred to as "picking up the packaging bag 10 together") (see reference). Figure 4 ).

[0063] Furthermore, in this embodiment, openings 22 are formed at both ends 21a, 21a of the slit 21. Compared to the slit 21, the width of these openings 22 in the second direction (Y direction) is increased. Therefore, even if the length L2 (formation area of ​​the outlet) of the dispensing port 20 in the first direction (X direction) is short, it is possible to prevent the packaging bag from being picked up together while further preventing the sheet from falling in (see reference). Figure 4 ).

[0064] Furthermore, in this embodiment, an opening 22 with a width W3 greater than the width W2 of the slit 21 is provided in the dispensing port 20, so that the internal state of the sheet packaging body 100 can be visually observed from the dispensing port 20 formed on the upper surface 11 of the packaging bag 10. Therefore, even when the sheet ST is contained in the packaging bag 10 as in the sheet packaging body 100, the remaining quantity of the sheet ST can be confirmed (see [reference]). Figure 4 ).

[0065] Furthermore, in the sheet packaging body 100 of this embodiment, the width W3 of the opening 22 increases as it moves further away from the slit 21 in the first direction (X direction). This allows the stress applied to the central portion 20a (slit 21) and its periphery of the dispensing port 20 to be gradually released (or dispersed) to the end 20b (opening 22) of the dispensing port 20, which serves as a buffer. In addition, in this configuration, the periphery of the slit 21 can appropriately flex in response to the stress applied to the central portion 20a (slit 21) and other areas of the dispensing port 20. Therefore, in the sheet packaging body 100 of this embodiment, the sheet ST can be easily removed, and the dropping of the sheet ST and the simultaneous removal of the packaging bag 10 (see reference) can be evenly prevented. Figure 4 ).

[0066] Furthermore, in this embodiment, the opening 22 of the dispensing port 20 is provided with a curved portion 22b as described above, thereby reducing the likelihood of the sheet ST being squeezed onto the end 20b of the dispensing port 20 and mitigating friction between the end 20b of the dispensing port 20 and the sheet ST. Additionally, in this embodiment, the portion formed by the opening 22 with such a curved portion 22b in the dispensing port 20 can constitute a gripping area. Therefore, in this embodiment, even though the opening 22 is provided at at least one end 21a of the slit 21 in the dispensing port 20, the gripping area corresponding to the opening 22 can prevent a decrease in the openability of the dispensing port 20 (see reference). Figure 3 ).

[0067] Furthermore, in this embodiment, when the portion of the outlet 20 in which the opening 22 is formed constitutes a gripping area, the gripping area can also form a curved portion 22b corresponding to the curved portion 22b of the opening 22 (see reference). Figure 3 Therefore, when the dispensing port 20 is opened, the bending portion 22b of the pinching point is pinched, making it easier to pinch. Thus, in this embodiment, when an opening 22 continuous with the end 21a of the slit 21 is provided in the dispensing port 20, the openingability of the dispensing port 20 can be improved (see reference). Figure 4 ).

[0068] Furthermore, in this embodiment, since the curved portion 22b of the opening 22 is formed by continuous cuts, when opening the dispensing port 20, the fingers can easily hook the curved portion 22b of the pinch area corresponding to the curved portion 22b of the opening 22 (see reference). Figure 3 Therefore, in this embodiment, when an opening 22 that is continuous with the end 21a of the slit 21 is provided in the outlet 20, the openability of the outlet 20 can be further improved.

[0069] Furthermore, in the sheet packaging 100 of this embodiment, the slit 21 and opening 22 constituting the access port 20 are formed using continuous perforations M, as described above. In this embodiment, by breaking through these continuous perforations M, the access port 20, which consists of a continuous slit 21 and opening 22, can be easily formed (see reference). Figures 1-4 ).

[0070] Figure 5 This is an enlarged view of a portion of the opening 20 in the sheet packaging body 100 of a variation of the first embodiment. In this variation of the first embodiment, the curved portion 22b of the opening 22 is formed using a cut TC having a connecting portion 22c. This cut TC with the connecting portion 22c is not formed continuously. Specifically, the curved portion 22b of the gripping area, corresponding to the curved portion 22b of the opening 22, is connected to the upper surface 11 of the packaging body other than the gripping area via the connecting portion 22c (see reference). Figure 5 ).

[0071] Furthermore, in a variation of the first embodiment, in the opening 22 of the dispensing port 20, the connecting portion 22c of the curved portion 22b is provided on the extension line of the slit 21 in the first direction (X direction). Specifically, the connecting portion 22c of the curved portion 22b is provided in the cutout TC of the curved portion 22b constituting the opening 22, at the portion overlapping with the first direction (X direction) (top of the curved portion 22b at the gripping point) (see reference). Figure 5 ).

[0072] As described in the first embodiment above, when the curved portion 22b of the opening 22 is formed using continuous cuts CC, if the curved portion 22b of the gripping area corresponding to the curved portion 22b of the opening 22 is lifted, the opening 20 may be opened during the manufacturing of the sheet packaging 100 or before use (see reference). Figure 3 In contrast, in a variation of the first embodiment, the cutout TC constituting the curved portion 22b has a connecting portion 22c, thus preventing the curved portion 22b at such a gripping point from being lifted (see reference). Figure 5 ).

[0073] In the curved portion of the gripping area, which corresponds to the curved portion 22b of the opening 22, the portion overlapping the first direction (X direction) (the top of the curved portion 22b of the gripping area) is most easily lifted. In contrast, in a variation of the first embodiment, the connecting portion 22c of the cut TC constituting the curved portion 22b is provided on the extension line of the slit 21 in the first direction (X direction), thus preventing such lifting of the curved portion 22b of the gripping area.

[0074] Alternatively, the connecting portion 22c of the cut TC can be positioned at a location that does not overlap with the extension line of the slit 21 in the first direction (X direction) (a position offset from the extension line of the slit 21). If this is the case, the finger can easily hook the curved portion of the pinching area formed by the curved portion 22b corresponding to the opening 22, thus improving the openability of the extraction port 20 when the cut TC has the connecting portion 22c.

[0075] Figure 6 This is a view of the sheet packaging 100 of the second embodiment from above in the height direction. Figure 7 Is Figure 6 The image shows an enlarged view of a portion of the take-out port in the sheet packaging. In the sheet packaging 100 of the second embodiment, perforations M surround the slit 21 and the opening 22, which together constitute the take-out port 20. That is, the take-out port 20 is formed within a range that is closed by continuous perforations M, and the slit 21 and the opening 22 are disposed within this range.

[0076] Specifically, the slit 21, which is surrounded by the perforation M along with the opening 22, has a width W2 in the second direction (Y direction) (see reference). Figure 6 Furthermore, the width W2 of the slit 21 is preferably more than 1% of the size (width W1) of the sheet ST. Further, the opening 22, which is surrounded by the perforation M along with the slit 21, has a width W3 larger than the width W2, and is continuous with the end 21a of the slit 21 (see reference). Figure 7 ).

[0077] In the sheet packaging 100 of the second embodiment, the slit 21 and the opening 22 are surrounded by continuous perforations M, which together form the dispensing port 20. Therefore, by breaking through these perforations M, a gripping point can be formed on the dispensing port 20. Thus, in the second embodiment, it is possible to prevent the generation of multiple fragments after opening the dispensing port 20. Furthermore, the dispensing port 20 can be opened by gripping only one gripping point, making opening the dispensing port 20 easy (see [reference]). Figure 6 , Figure 7 ).

[0078] Furthermore, in the second embodiment, the slit 21 has a width W2 in the second direction (Y direction) and forms part of the outlet 20, thereby making it easier to open the already opened outlet 20 (OP). Therefore, according to the second embodiment, it is further easier to remove the sheet ST (such as the first sheet ST of the sheet laminate SL contained in the packaging bag 10) from the outlet OP.

[0079] Furthermore, in the second embodiment, when the sheet ST is taken out (or pulled out) from the dispensing port 20 (OP) during use, the frictional force (or resistance) applied to the dispensing port 20 (slit 21) can be reduced. Therefore, according to the second embodiment, even if less sheet ST remains during use, it is possible to prevent the packaging bag 10 from being picked up together with high precision.

[0080] Furthermore, in the second embodiment, as described above, the width W3 of the opening 22 in the dispensing port 20 is larger than the width W2 of the slit 21. That is, the portion of the dispensing port 20 in which the opening 22 is formed can constitute a gripping area, and the width of the end 20b of this gripping area is increased relative to the central portion 20a of the dispensing port 20. Thus, in the second embodiment, even if the opening 22 is provided at the end 21a of the slit 21 in the dispensing port 20, the dispensing port 20 can be opened by gripping the gripping area corresponding to the opening 22, making the dispensing port 20 easy to open.

[0081] Example

[0082] The present invention will now be further described in detail using examples. The evaluation of the examples and comparative examples was conducted through the following tests.

[0083] [Sheet Packaging (Experimental)]

[0084] As a test subject, a sheet packaging body 100 was prepared, which is a sheet laminate SL formed by stacking multiple sheets ST and packaged in a packaging bag 10 (refer to...). Figure 1 , Figure 8 The sheet laminate SL is a pop-out type of sheet ST that is folded into each other and pulled out one group at a time. (Weight per unit area is 10.7g / m²) 2 The paper is 110μm thick, has 2 layers, and is arranged in 150 sets (300 sheets). Its dimensions are approximately 40mm in bulk (height), 179mm in width (lateral), and 101mm in width (vertical). Furthermore, the sheet laminate SL is housed in the packaging bag 10 with its lamination direction (SD direction) aligned with the height direction (Z direction) of the sheet packaging body 100 (see reference). Figure 1 , Figure 8Furthermore, the packaging bag 10 is made of polyethylene (PE) with a thickness of 50 μm. The packaging bag 10 is folded to seal the two sides 15 and 16 of the sheet packaging body 100 (forming sealing portions 30 and 40). The dimensions of the packaging bag 10 constituting the sheet packaging body 100 are set as follows: approximately 181 mm in the length direction (X direction), approximately 101 mm in the depth direction (Y direction), and approximately 40 mm in the height direction (Z direction). In addition, an opening 20 (perforation M) extending in the first direction (X direction) is formed on the upper surface 11 of the packaging bag 10.

[0085] [Extraction resistance value]

[0086] The pull-out resistance value of the sheet packaging 100 was confirmed. In confirming the pull-out resistance value, the test object (sheet packaging 100) was placed on a flat surface, and the first set of face paper (sheet ST) was pulled out halfway through the outlet 20 (OP) of the packaging bag 10. Then, a bulldog clip (Kuri-17, manufactured by KOKUYO Co., Ltd.) was used to clamp the upper end of the pulled-out sheet ST (the central portion in the length direction (X direction) of the sheet packaging 100). The hook of a push-pull force gauge (model Z2-20, manufactured by IMADA Co., Ltd.) was passed through one hole of the handle portion of the bulldog clip, and applied at a fixed speed for 0.4 to 0.6 seconds. The resistance (in gf) when the face paper was pulled out vertically (Z direction) relative to the upper surface 11 of the packaging bag 10 was measured. In addition, the evaluation standard for the extraction resistance value is set as follows: when the extraction resistance is below 200gf, it is good (the ST sheet is easy to remove), and when it exceeds 200gf, it is bad (the ST sheet is not easy to remove).

[0087] [Removal (Initial)]

[0088] The initial removability of the sheet package 100 is verified. The initial removability verification evaluates the ease with which the first sheet ST of the sheet stack SL is removed from the package bag 10 containing the sheet stack 10 through the opened removal port 20 (OP) of the package bag 10. The initial removability evaluation is performed using the following criteria. Furthermore, an initial removability evaluation of 3 or higher is considered good (sheet ST is easy to remove), and a score less than 3 is considered unfavorable (sheet ST is not easy to remove).

[0089] 5: The first set is very easy to hold.

[0090] 4: The first set is easy to hold.

[0091] 3: The first set can be pinched

[0092] 2: The first set can be pinched but is not easy to pinch.

[0093] 1: The first set can be pinched but is very difficult to pinch.

[0094] [Non-fallibility]

[0095] The non-fall-in property of the sheet ST contained in the packaging bag 10 of the sheet packaging body 100 is confirmed. In confirming non-fall-in property, the following characteristic is evaluated: when the sheet ST is extracted from the sheet laminate ST through the extraction port 20 of the packaging bag 10, does the sheet ST fall into the packaging bag 10 (non-fall-in property)? The evaluation of non-fall-in property is performed using the following criteria. Furthermore, a non-fall-in property evaluation of 3 or higher is considered good (sheet ST is not prone to falling in), and a value less than 3 is considered undesirable (sheet ST is prone to falling in).

[0096] 5: No ST film falling in.

[0097] 4: The ST (Special Pressure) on the sheet falls in more than once but less than three times.

[0098] 3: The ST (stuttering) of the sheet falls in more than 4 times but less than 6 times.

[0099] 2: The ST (Special Pressure) drop of the sheet material occurs more than 7 times but less than 9 times.

[0100] 1: The ST (Special Pressure) on the sheet falls in more than 10 times.

[0101] [Not picked up together]

[0102] The non-co-grabbing property of the packaging bag 10 containing the sheet ST in the sheet packaging body 100 is verified. In verifying non-co-grabbing property, the following characteristic is evaluated: when the sheet ST is pulled out from the sheet laminate ST through the outlet 20 of the sheet packaging body 100, does the packaging bag 10 not get picked up together (non-co-grabbing property)? The evaluation of non-co-grabbing property is performed using the following criteria. Furthermore, a non-co-grabbing property evaluation of 3 or higher is considered good (the packaging bag 10 is not easily picked up together), and a value less than 3 is considered undesirable (the packaging bag 10 is easily picked up together).

[0103] 5: The 10 packaging bags were not picked up together.

[0104] 4: When there are more than 1 set but less than 3 sets of sheet ST remaining, the packaging bag 10 will be picked up together.

[0105] 3: When there are 4 or more but less than 6 sets of ST sheet remaining, the packaging bag 10 will be picked up together.

[0106] 2: When there are 7 or more but less than 9 sets of sheet ST remaining, the packaging bag 10 will be picked up together.

[0107] 1: When there are more than 10 sets of sheet ST remaining, the packaging bag 10 will be picked up together.

[0108] [Opening nature]

[0109] The openability of the packaging bag 10 of the sheet packaging body 100 is confirmed. In confirming the openability, the following characteristic is evaluated: the ease of opening when the end 20b (pinch point) of the dispensing port 20 is pinched and the perforation M is broken in the first direction (X). The evaluation of openability is performed using the following criteria. Furthermore, an openability evaluation of 3 or higher is considered good (the dispensing port 20 is easy to open), and a value less than 3 is considered ungood (the dispensing port 20 is not easy to open).

[0110] 5: The end 20b of the opening 20 (the pinching point) can be easily pinched with fingers, and the fragments after opening are one piece.

[0111] 4: The end 20b of the opening 20 can be pinched with fingers (the pinching point), and the broken piece after opening is 1 piece.

[0112] 3: The end 20b of the outlet 20 (the pinching point) can be pinched with fingers, but there are two fragments after opening.

[0113] 2: It is not easy to pinch the end 20b (pinching point) of the outlet 20 with your fingers.

[0114] 1: The end 20b (holding point) of the dispensing port 20 cannot be pinched by fingers.

[0115] The following description focuses on both the embodiments and comparative examples.

[0116] [Example 1]

[0117] In the sheet packaging 100, a slit 21 and an opening 22 are provided at the dispensing port 20. The slit 21 extends in a first direction (X direction), and the openings 22 are continuous with both ends 21a of the slit 21. In the second direction (Y direction), the width W3 of the opening 22 is made larger than the width W2 of the slit 21. The shape of the slit 21 of the dispensing port 20 is made straight, and the shapes of the openings 22 are each made fan-shaped. The dimensions of the dispensing port 20 are such that the length L2 in the first direction (X direction) is approximately 134 mm. Furthermore, the dimensions of the slit 21 are such that the length L3 in the first direction (X direction) is approximately 114 mm, and the width W2 in the second direction (Y direction) is approximately 0.5 mm. Further, the dimensions of the openings 22 are such that the length in the first direction (X direction) is approximately 10 mm, and the maximum value of the width W3 in the second direction (Y direction) is approximately 15.5 mm. In addition, the ratio of the length L1 of the sheet ST to the length L2 of the exit 20 is approximately 75% (refer to...). Figure 1 , Figure 2For this test specimen, extraction resistance, initial removal performance, non-fall-in performance, and non-joint-pickup performance were evaluated. The results are presented in Table 1.

[0118] [Example 2]

[0119] In the sheet packaging 100, except as described below, the evaluation was conducted in the same manner as in Example 1: the length L2 in the first direction (X direction) of the outlet 20 was set to approximately 116 mm; the length L3 in the first direction (X direction) of the slit 21 was set to approximately 96 mm; and the ratio of the length L2 of the outlet 20 to the length L1 of the sheet ST was set to approximately 65%. The results are shown in Table 1.

[0120] [Example 3]

[0121] In the sheet packaging 100, such as Figure 6 , Figure 7 As shown, except as described below, the evaluation was conducted in the same manner as in Example 1: the slit 21 of the outlet 20 was shaped into an elongated rectangle; the opening 22 was made into a fan shape; the length L3 in the first direction (X direction) of the slit 21 was set to approximately 67 mm, and the width W2 in the second direction (Y direction) was set to approximately 5 mm; the length in the first direction (X direction) of the opening 22 was set to approximately 67 mm, and the maximum value of the width W3 in the second direction (Y direction) was set to approximately 15.5 mm; the curved portion 22b of the opening 22 was formed using continuous cuts CC. The results are shown in Table 1.

[0122] [Example 4]

[0123] In the sheet packaging 100, except as described below, the evaluation was conducted in the same manner as in Example 3: the length L2 in the first direction (X direction) of the take-out port 20 was set to approximately 116 mm; the length L3 in the first direction (X direction) of the slit 21 was set to approximately 49 mm; and the ratio of the length L2 of the take-out port 20 to the length L1 of the sheet ST was set to approximately 65%. The results are shown in Table 1.

[0124] [Example 5]

[0125] In the sheet packaging 100, such as Figure 5 As shown, except as described below, the evaluation was performed in the same manner as in Example 3: the curved portion 22b of the opening 22 was formed using a cutout TC having a connecting portion 22c; a connecting portion 22c (the connection of the curved portion) of approximately 0.5 mm was provided in the portion overlapping with the first direction (X direction) (the top of the curved portion 22b at the gripping point). The results are shown in Table 1.

[0126] [Comparative Example 1]

[0127] In the sheet packaging 100, such as Figure 8 As shown, except as described below, the evaluation was conducted in the same manner as in Example 1: only a slit 21 was formed in the straight outlet 20 (no opening 22 was formed); the length of the outlet 20 (slit 21) in the first direction (X direction) was set to approximately 134 mm, and the width in the second direction (Y direction) was set to approximately 0.5 mm. The results are shown in Table 1.

[0128] [Reference Example 1]

[0129] In the sheet packaging 100, except that the width in the second direction (Y direction) was set to approximately 5 mm as the size of the outlet 20 (slit 21), the evaluation was conducted in the same manner as in Example 1. The results are shown in Table 1.

[0130] [Table 1]

[0131] According to Table 1, the sheet packaging 100 has an outlet 20 formed on the upper surface 11 of the packaging bag 10, which has an opening 22 that is continuous with both ends 21a of the slit 21, and the width W3 of the opening 22 in the second direction (Y direction) is greater than the width W2 of the slit 21; the sheet packaging 100 has good characteristics in terms of pull-out resistance, removal (initial), non-falling-in, non-collection, and opening (Examples 1-5).

[0132] On the other hand, in the sheet packaging 100, only a slit 21 with a width of about 0.5 mm in the second direction (Y direction) is formed at the outlet 20 (no opening 22 is formed); the sheet packaging 100 does not have good characteristics in terms of extraction resistance, removal (initially), non-falling, non-collection, and opening (Comparative Example 1).

[0133] Furthermore, in the sheet packaging 100, only a slit 21 with a width of about 5 mm in the second direction (Y direction) is formed at the outlet 20 (no opening 22 with a width greater than the slit 21 is formed at the end 21a of the slit 21), so the opening performance of the sheet packaging 100 is not good (see Example 1).

[0134] Furthermore, by forming an opening 22 at the end 21a of the slit 21, which is wider than the slit 21, even if the length L2 of the take-out outlet 20 in the first direction (X direction) (the forming area of ​​the take-out outlet 20) is short (even if the length L2 of the take-out outlet 20 is shortened from about 75% to about 65% relative to the length L1 of the packaging bag 10 in the first direction (X direction), the non-fall-in property can be improved while maintaining the non-collection property (Examples 2, 4).

[0135] Furthermore, the curved portion 22b of the opening 22 is formed by using the cutout TC with the connecting portion 22c, thereby preventing the curved portion 22b from being lifted (the outlet 20 is opened during the manufacturing of the sheet packaging 100 or before use) (Example 5).

[0136] Based on these results, it can be seen that the sheet packaging body has an outlet formed on the upper surface of the packaging bag with a slit extending in a first direction and an opening continuous with at least one end of the slit. In a second direction intersecting the first direction, the width of the opening is greater than the width of the slit. The sheet packaging body has excellent sheet removal and opening of the outlet.

[0137] The embodiments of the present invention have been described above. However, the present invention is not limited to specific embodiments, and various changes and modifications can be made within the scope of the invention as described in the claims.

[0138] Preferred embodiments of the present invention are described below.

[0139] A first aspect of the invention is a sheet packaging body comprising: a plurality of stacked sheets; a packaging bag containing the sheets; and an outlet formed on the upper surface of the packaging bag for removing the sheets; the outlet having a slit extending in a first direction and an opening continuous with at least one end of the slit, and the width of the opening being greater than the width of the slit in a second direction intersecting the first direction.

[0140] In this specification, an opening that is continuous with at least one end of the slit refers to a situation where the opening is provided at either end of the slit and is continuous with that end, or where the opening is provided at both ends of the slit and is continuous with each end. Furthermore, the widths of the slit and the opening constituting the outlet each represent the width of a second direction intersecting the first direction.

[0141] In the first embodiment, the opening in the dispensing port formed on the upper surface of the packaging bag, which is continuous with at least one end of the slit, is configured to have a width greater than the width of the slit. Therefore, when the tissue paper (sheet) is pulled out from the packaging bag, the sheet is less likely to get stuck in the dispensing port, and the sheet is less likely to tear.

[0142] In particular, in existing sheet packaging where the dispensing opening is formed only by a slit, the sheet tends to get stuck at the end of the dispensing opening and rub against it because the opening is narrow. In contrast, in the first method, the width of at least one end (opening) of the dispensing opening (slit) formed on the upper surface of the packaging bag is increased. Therefore, even if the dispensing opening is narrow, the sheet is less likely to get stuck at the end of the dispensing opening, and friction between the end of the dispensing opening and the sheet is reduced. Thus, in the first method, when the sheet is pulled out, it is possible to prevent the sheet from getting stuck at the end of the dispensing opening and to prevent the sheet from breaking.

[0143] Furthermore, in the first embodiment, the opening continuous with at least one end of the slit can constitute a buffer portion in the dispensing port. Thus, when the slit of the opened dispensing port is opened with a finger, the stress applied to the dispensing port and its periphery can be released (or dispersed) to the opening portion (buffer portion). Therefore, in the first embodiment, it becomes easy to open the opened slit with a finger, and it becomes easy to remove the sheet (such as the first sheet contained in the packaging bag) from the packaging bag.

[0144] Furthermore, in the first embodiment, there is an opening (buffer portion) continuous with at least one end of the slit, thereby allowing the periphery of the slit to flex (or deform with the weight of the sheet itself) in response to the weight of the sheet held in the central portion (slit) of the dispensing outlet during use. Thus, in the first embodiment, the holding force of the sheet in the dispensing outlet can be maintained, and the sheet can be prevented from falling into the packaging bag during use (hereinafter referred to as sheet falling in).

[0145] Furthermore, in the first method, friction between the end of the dispensing port and the sheet is mitigated as described above, thereby reducing the likelihood of breakage at the end of the dispensing port of the sheet packaging during use. From this perspective, since the reduction in the sheet's holding force in the dispensing port is suppressed, it is also possible to prevent the sheet from falling into the packaging bag during use (hereinafter referred to as sheet ST falling in) (see reference). Figure 4 ).

[0146] Furthermore, in the first embodiment, when the sheet is taken out (or pulled out) from the slit of the dispensing port during use, the frictional force (or resistance) applied to the slit can be released (or dispersed) to the opening (buffer). Thus, in the first embodiment, even if less sheet remains during use (i.e., the weight of the sheet package becomes lighter), it is possible to prevent the packaging bag from being picked up together with the sheet (hereinafter referred to as picking up the packaging bag 10 together).

[0147] Furthermore, in the first method, an opening wider than the slit is formed at at least one end of the slit, thereby preventing the packaging bag from being picked up together while further preventing the sheet from falling in, even if the length of the take-out outlet (the area where the take-out outlet is formed) is short in the first direction.

[0148] Furthermore, in the first embodiment, an opening wider than the slit width is provided in the dispensing port, allowing the interior of the sheet packaging to be visually observed from the dispensing port formed on the upper surface of the packaging bag. Thus, even when sheets are contained within the packaging bag as in the sheet packaging, the remaining quantity of sheets can be confirmed.

[0149] Regarding a second aspect of the invention, a sheet packaging body is provided, wherein, in the first direction, the width of the opening increases as one moves further away from the slit. In this specification, "the width of the opening increases as one moves further away from the slit" in the first direction refers to the gradual increase in width of the dispensing port formed on the upper surface of the packaging bag from the central portion (slit) side of the dispensing port towards the end portion (opening) side of the dispensing port.

[0150] In the second method, the width of the opening increases further away from the slit in the first direction, thereby gradually releasing (or dispersing) the stress applied to the central part (slit) and its periphery of the dispensing outlet to the end (opening) of the dispensing outlet, which serves as a buffer. Furthermore, the periphery of the slit can appropriately flex in response to the stress applied to the central part (slit) of the dispensing outlet, etc. Therefore, in the second method, it is easier to remove the sheet, and the dropping of the sheet and the picking up of the packaging bag together are evenly prevented.

[0151] Regarding a third aspect of the present invention, there is a sheet packaging body, wherein the opening has a curved portion that is convex in a direction away from the slit in the first direction. In this specification, the curved portion that is convex in a direction away from the slit refers to the portion formed on the upper surface of the packaging bag, wherein at the end of the outlet where the opening is provided, the portion is curved into a convex shape from the central portion (slit) side of the outlet toward the end (opening) side of the outlet.

[0152] In the third embodiment, the opening of the dispensing port has this curved portion, which makes it less likely for the sheet to be squeezed at the end of the dispensing port, thereby reducing friction between the end of the dispensing port and the sheet. Furthermore, in the third embodiment, the portion formed by the opening with this curved portion in the dispensing port can constitute a gripping area. Therefore, in the third embodiment, even if the opening is provided at at least one end of the slit in the dispensing port, the gripping area corresponding to that opening can prevent a decrease in the openability of the dispensing port.

[0153] Furthermore, in the third method, when the portion forming the opening in the dispensing port constitutes the gripping area, the gripping area can also form a curved portion corresponding to the curved portion of the opening. Therefore, when the dispensing port is opened, the gripping area becomes easier to grip by pinching the curved portion. Thus, in the third method, when an opening continuous with the end of the slit is provided in the dispensing port, the openingability of the dispensing port can be improved.

[0154] Regarding a fourth aspect of the present invention, a sheet packaging body is provided, wherein the aforementioned curved portion is formed using continuous slits. In this specification, continuous slits refer to the curved portion being formed solely by cutting portions without any connecting portions.

[0155] In the fourth method, a curved portion of the opening is formed by continuous slits, so that when opening the dispensing port, the fingers can easily hook onto the curved portion of the pinch area formed by the curved portion corresponding to the opening. Therefore, in the fourth method, when an opening that is continuous with the end of the slit is provided in the dispensing port, the openingability of the dispensing port can be further improved.

[0156] Regarding the fifth aspect of the present invention, it is a sheet packaging body, wherein the aforementioned curved portion is formed by a cut having a connecting portion. In this specification, a cut having a connecting portion means that the cut is not formed continuously, and the curved portion of the gripping area, which corresponds to the curved portion of the opening, is connected to the upper surface of the packaging body other than the gripping area by the connecting portion.

[0157] As in the fourth method described above, when the curved portion of the opening is formed using continuous cuts, if the curved portion of the gripping area corresponding to the curved portion of the opening is lifted, the opening may be opened during the manufacturing of the sheet packaging or before use. In contrast, in the fifth method, the cuts forming the curved portion have connecting portions, thus preventing such lifting of the curved portion.

[0158] Regarding a sixth aspect of the present invention, there is a sheet packaging body, wherein the connecting portion is provided on the extension line of the slit in the first direction. In this specification, the extension line of the slit in the first direction refers to the position where the portion overlapping with the first direction (the top of the curved portion of the pinching area) is located in the cut of the curved portion constituting the opening.

[0159] In the curved portion of the gripping area corresponding to the curved portion of the opening, the portion overlapping with the first direction (the top of the curved portion of the gripping area) is most easily lifted. In contrast, in the sixth embodiment, the connecting portion of the cut constituting the curved portion is provided on the extension line of the slit in the first direction, thus preventing such lifting of the curved portion.

[0160] Alternatively, the connecting portion of the cut can be positioned at a location that does not overlap with the extension line of the slit in the first direction (a position offset from the extension line of the slit). In this case, the fingers can easily hook the curved portion of the pinching area formed by the curved portion corresponding to the opening, thus improving the openingability of the extraction port even when the cut has a connecting portion.

[0161] Regarding the seventh aspect of the present invention, it is a sheet packaging body in which the aforementioned slit and opening are formed by continuous perforations. In this specification, continuous perforations refer to the alternating arrangement of the cut portions and connecting portions constituting the perforations.

[0162] In the seventh method, a slit and an opening are formed by continuous perforation, which constitute an outlet. Therefore, by breaking such perforation, an outlet with a continuous slit and an opening can be easily formed.

[0163] Regarding the eighth aspect of the present invention, it is a sheet packaging body in which the aforementioned perforations surround the aforementioned slit and opening. In this specification, "surrounding with perforations" means that within a range closed by continuous perforations, there exists a slit and opening for taking out an opening.

[0164] In the eighth method, a perforation is used to surround the slit and the opening, which together constitute the extraction port. Therefore, by breaking through such a perforation, a gripping point can be formed relative to the extraction port. Thus, in the eighth method, it is possible to prevent the generation of multiple fragments after the extraction port is opened. Furthermore, the extraction port can be opened by gripping only one gripping point, making opening the extraction port easy.

[0165] Furthermore, in the eighth embodiment, since the width of the opening in the dispensing port is greater than the width of the slit, the portion forming the opening in the dispensing port can form a gripping area with increased width at at least one end relative to the center of the dispensing port. Therefore, in the eighth embodiment, even if the opening is provided at at least one end of the slit in the dispensing port, the dispensing port can be opened by gripping the gripping area corresponding to the opening, thereby preventing a decrease in the openability of the dispensing port.

[0166] This application claims priority based on Japanese Patent Application No. 2018-223499, filed on November 29, 2018, the entire contents of which are incorporated herein by reference.

[0167] Symbol Explanation

[0168] 100: Sheet packaging

[0169] ST: Sheet (toilet paper)

[0170] SL: Sheet laminate

[0171] 10: Packaging bags

[0172] 11: Top surface

[0173] 11a: Central

[0174] 11b: End

[0175] 12: Lower surface

[0176] 13: Front

[0177] 14: Back

[0178] 15: Side view

[0179] 16: Side view

[0180] 20: Take the exit

[0181] 21: Slit

[0182] 21a: End

[0183] 22: Opening

[0184] 22a: Inclined part

[0185] 22b: Curved section

[0186] 22c: Connecting part

[0187] 30: Sealing part

[0188] 40: Sealing part

Claims

1. A sheet packaging body, comprising: Multiple sheets stacked together; Packaging bag containing the sheet; and An outlet is formed on the upper surface of the packaging bag and is provided for withdrawing the sheet. The outlet has The slit extending in the first direction, and An opening that is continuous with at least one end of the slit. In a second direction intersecting the first direction, the width of the opening is greater than the width of the slit.

2. The sheet packaging body as described in claim 1, wherein, The width of the opening increases as it moves further away from the slit in the first direction.

3. The sheet packaging body as described in claim 1 or 2, wherein, The opening has a curved portion that is convex in the direction away from the slit in the first direction.

4. The sheet packaging body as described in claim 3, wherein, The curved portion is formed by using continuous cuts.

5. The sheet packaging body as described in claim 3, wherein, The curved portion is formed by using a cut with a connecting portion.

6. The sheet packaging body as described in claim 5, wherein, The connecting portion is disposed on the extension line of the slit in the first direction.

7. The sheet packaging body according to any one of claims 1 to 6, wherein, The slit and the opening are formed by continuous perforation.

8. The sheet packaging body as described in claim 7, wherein, The perforation is used to surround the slit and the opening.

9. The sheet packaging body as described in claim 1, wherein, The slit is 67mm long and 5mm wide, and the opening is 15.5mm wide.

10. The sheet packaging body as described in claim 1, wherein, The length of the outlet is 65% of the length of the sheet.

11. The sheet packaging body as claimed in claim 1, wherein, The connecting portion is 0.5mm.

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