JP7438724B2 - sheet packaging - Google Patents

Description

The present invention relates to a sheet package.

BACKGROUND ART Sanitary tissue paper such as tissue paper is widely packaged in cartons (cardboard boxes). However, in recent years, sheets of sanitary tissue paper such as carton-type sanitary tissue paper have been stored in flexible film packaging bags due to the bulkiness of carton-type sanitary tissue paper when carrying and storing it, disposal after use, environmental impact, cost, etc. There is an increasing demand for sheet packaging (hereinafter referred to as sheet packaging). In such a sheet packaging body, a linear slit (perforation, etc.) is formed on the top surface of the film packaging bag to take out the sheet (for example, see Patent Documents 1 and 2).

Japanese Patent Application Publication No. 2008-183034 Japanese Patent Application Publication No. 2018-177364

In a sheet package whose outlet is formed with a linear slit, when taking out the sheets from the sheet packaging bag, it is difficult to take out the first one (or one set) of the plurality of sheets stored therein. Furthermore, when taking out the sheet, the sheet may become jammed at the outlet or may be torn, making it difficult to take out the sheet smoothly.

An object of the present invention is to provide a sheet package that is excellent in taking out sheets.

A first aspect of the present invention includes a packaging bag that accommodates a plurality of stacked sheets, and an outlet formed on the top surface of the packaging bag from which the sheets are pulled out, the outlet being , a first slit extending in a first direction, a second slit extending in the first direction at a distance from the first slit in a second direction intersecting the first direction, and arranged inside the outlet. , a sheet packaging body having a third slit connected to the first slit and the second slit and extending in the second direction.

In this specification, the first direction refers to a direction along a predetermined direction on the top surface of the packaging bag. The second direction intersecting the first direction refers to a direction perpendicular to a direction along a predetermined direction on the top surface of the packaging bag or a direction along a direction intersecting the brace. A slit is a continuous cut or elongated opening. Note that the continuous cuts may be formed by breaking perforations (intermittent cuts).

In the first aspect, a third slit connected to the first slit and the second slit extending in the first direction with an interval in the second direction and extending in the second direction is arranged inside the opening. The outlet can be opened along the first slit and the second slit starting from the three slits. In addition, a part of the top surface that covered the outlet before opening (hereinafter referred to as part of the top surface) is separated by the third slit, and both ends of the outlet in the first direction (hereinafter referred to as part of the top surface) are separated by the third slit. , both ends of the outlet).

In such a configuration, when the sheet is pulled out from the outlet, a portion of the top surface divided by the third slit is turned over by the sheet, thereby forming folds at both ends of the outlet. As a result, in the first aspect, the friction between both ends of the outlet and the sheet to be pulled out is alleviated, and the sheet can be smoothly taken out from the outlet.

Further, in the first aspect, since the opening width of the outlet in the second direction increases between the first slit and the second slit, it is easy to insert a fingertip into the opened outlet. Therefore, even when taking out the first sheet or the first set of sheets accommodated in the packaging bag, or when taking out a sheet that has fallen into the packaging bag, it is easy to take out the sheet.

Further, in the first aspect, the folds formed at both ends of the ejection port provide resistance to the weight of the sheet held at the ejection port during use. Thereby, the holding force of the sheet is maintained at both ends of the outlet, and it is possible to prevent the sheet from falling into the packaging bag during use (hereinafter referred to as sheet falling).

In addition, in the first aspect, the folds formed at both ends of the ejection port bend with respect to the sheet from the ejection port, and the frictional force (or resistance force) applied to both ends of the ejection port is released to the periphery of the ejection port. (or scatter). As a result, even if there are fewer sheets left in the packaging bag (even if the weight of the sheet packaging becomes lighter), the entire packaging bag will be lifted up when the sheet is pulled out from the outlet (hereinafter referred to as the packaging bag). (called lifting) can be prevented.

Further, in the first aspect, a part of the top surface that covered the outlet before opening is connected to both ends of the outlet even after the outlet is opened. Therefore, in the first aspect, no broken pieces (cut ends, small pieces, fragments, etc. cut off from the packaging bag) are generated when the outlet is opened.

A second aspect of the present invention is a sheet package in which the third slit is arranged at the center of the outlet. In this specification, the center of the outlet refers to the area around the center (or centroid) of the outlet.

In the second aspect, the third slit arranged at the center of the outlet is connected to the first slit and the second slit, so that the outlet can be opened starting from the center of the outlet, and the third slit is connected to the first slit and the second slit. Easy to open. Furthermore, in the second aspect, the outlet is opened starting from the center of the outlet, so that creases are easily formed at both ends of the outlet.

In addition, in the second aspect, the part of the top surface divided by the third slit has approximately the same dimension from the center of the outlet to both ends of the outlet along the first direction, and The folds can be configured in a well-balanced manner. Thereby, the sheet can be smoothly taken out from the take-out port with high precision. Further, it is possible to suppress the falling of the sheet and the lifting of the packaging bag with high precision.

A third aspect of the present invention includes a knob that covers the outlet, and the knob is surrounded by a portion of the first slit, a portion of the second slit, the third slit, and a base end. The base end is a sheet package that constitutes an end of the outlet in the first direction. In this specification, covering the outlet means that the opening of the outlet except for each slit can be closed. The knob is a part of the top surface, and can be pinched or grasped with your fingertips when opening the outlet. The proximal end refers to the end of the knob that can be the starting point from which the knob is folded back.

In the third aspect, the knob that covers the outlet is surrounded by a part of the first slit, a part of the second slit, a third slit, and the base end, so that a part of the top surface that covers the outlet can be touched with a fingertip. can be picked or grabbed. Therefore, the work of opening the outlet becomes easier. Furthermore, after opening the outlet, it is easy to return the knob to its original state (covering the outlet).

Further, in the third aspect, since the base end of the knob constitutes the end of the outlet in the first direction, folds are likely to be formed at both ends of the outlet when the sheet is pulled out from the outlet. Therefore, in the third aspect, it is possible to suppress the falling of the sheet and the lifting of the packaging bag with high accuracy while maintaining smooth removal of the sheet from the outlet.

A fourth aspect of the present invention is a sheet package in which the outlet is surrounded by the first slit, the second slit, and the base end. In the fourth aspect, since the outlet is surrounded by the base end of the knob together with the first slit and the second slit, folds are likely to be formed at both ends of the outlet in the first direction. Therefore, in the fourth aspect, it is possible to smoothly take out the sheet from the ejection port with high precision by easily inserting a fingertip into the ejection port after opening.

Further, in the fourth aspect, the outlet is surrounded by the first slit and the second slit together with the proximal end of the knob, so that the opening width in the second direction is expanded between the first slit and the second slit. can be configured with high precision. Therefore, in the fourth aspect, the first sheet (or first set) of sheets stored in the packaging bag or the sheet that has fallen into the packaging bag is Easy extraction can be achieved with high precision.

In a fifth aspect of the present invention, the distance from the center of the outlet to the base end along the first direction is from the base end to the base end side end of the top surface along the first direction. It is a sheet package that is shorter than the distance to the edge. In this specification, the edge on the proximal side of the top surface along the first direction from the base end refers to either one of both edges of the top surface in the first direction, both ends of the outlet in the first direction. The end edge that is shorter in the first direction from the proximal end of the knob is shown.

In the fifth aspect, the distance from the center of the outlet to the base end of the knob along the first direction with respect to the distance from the base end of the knob to the base end edge of the top surface along the first direction. By shortening, the dimension of the outlet in the first direction can be reduced. As a result, in the fifth aspect, the holding force of the sheet is increased at both ends of the outlet, and it is possible to suppress the sheet from falling with high precision.

Note that, as described above, since creases are formed at both ends of the ejection port, in the fifth aspect, even if the dimension of the ejection port in the first direction becomes smaller, smooth extraction of the sheet is not hindered. Moreover, lifting of the packaging bag is suppressed. Furthermore, in the fifth aspect, by reducing the dimension of the outlet in the first direction, it is possible to suppress the intrusion of foreign substances such as dirt and dust from the outlet into the packaging bag.

A sixth aspect of the present invention is a sheet in which the distance between the first slit and the second slit along the second direction increases from the center of the outlet in the first direction toward the base end. It is a package. In this specification, the term "increasing from the center of the outlet in the first direction toward the base end" means that the width in the second direction of the part of the top surface that covers the outlet increases from the center of the outlet in the first direction. Indicates that the width becomes wider towards both ends.

In the sixth aspect, a part of the top surface that covers the outlet constitutes a knob, and the knob becomes wider from the tip to the proximal end. By pulling the knob toward the opening, you can stably open the outlet.

Also, if you look at the part of the top surface (knob) that covers the outlet, from a different perspective, it tapers from the base end to the tip, and the tip of the knob corresponds to the third slit provided in the center of the outlet. . As a result, the tip of the knob (third slit) is easily visible, and the outlet can be opened (or unsealed) using the inside of the outlet where the third slit is arranged as a trigger. Therefore, in the sixth aspect, opening of the outlet becomes easier.

A seventh aspect of the present invention provides a sheet package in which at least one of the first slit and the second slit is convex on the inside of the outlet. In this specification, being convex on the inside of the outlet means that the first slit and/or the second slit have a convex portion in the second direction (Y direction) facing each other.

In addition, at least one of the first slit and the second slit refers to a case where only the first slit is convex to the inside of the outlet, a case where only the second slit is convex to the inside of the outlet, the first slit and the second slit. The case where both of the two slits are convex inside the outlet is shown. The slit that is convex on the inside of the outlet may be formed in a curved shape as a whole, or a part may be formed in a curved shape and the other part may be formed in a straight line. It may be formed in a straight line.

In the seventh aspect, at least one of the first slit and the second slit is convex toward the inside of the outlet, so that the opening width of the outlet in the second direction is narrowed. As a result, the sheet pulled out from the ejection port is held at the ejection port in a state where it stands up above the ejection port (in other words, the sheet held at the ejection port is prevented from falling or tilting). ).

Note that foreign matter such as dust and dirt tends to easily enter near the center of the outlet because the knob cannot sufficiently cover the outlet even if an attempt is made to return the knob to its original state. Therefore, in the seventh aspect, by narrowing the opening width of the outlet in the second direction, it is possible to suppress the intrusion of foreign substances such as dirt and dust from the outlet into the packaging bag.

An eighth aspect of the present invention is a sheet package in which at least a portion of the third slit is curved. In this specification, curvature refers to bending in a concave manner. Moreover, the expression that at least a part of the third slit is curved refers to a case where the entire third slit is curved or a case where a part of the third slit is curved. Note that the number of curved portions of the third slit is not limited to one, and may be plural.

In the eighth aspect, at least a portion of the third slit is curved, so that when opening (or unsealing) the outlet, it becomes easier to put a finger on the curved third slit. Therefore, it is possible to open (or unseal) the outlet with high precision by using the inside of the outlet where the third slit is arranged as a trigger. Therefore, in the eighth aspect, it is easier to open the outlet.

According to one aspect of the present invention, it is possible to provide a sheet package that is excellent in taking out sheets.

FIG. 1 is a diagram showing a sheet package according to an embodiment (first embodiment) of the present invention. FIG. 3 is a view of the sheet package according to the first embodiment viewed from above. FIG. 3 is a diagram showing an outlet in the sheet package according to the first embodiment. In the sheet package according to the first embodiment, it is a diagram showing an outlet after opening. It is a figure showing the use state of the sheet package concerning a 1st embodiment. 6 is a front view of the vicinity of the outlet in FIG. 5. FIG. FIG. 6 is a view of the vicinity of the outlet in FIG. 5 viewed from the right side. 8 is an enlarged view of the end of the outlet in FIG. 7. FIG. FIG. 7 is a diagram illustrating an outlet in a sheet package according to a second embodiment. FIG. 7 is a diagram showing an outlet in a sheet package according to a third embodiment. FIG. 7 is a diagram showing an outlet in a sheet package according to a fourth embodiment. It is a figure which shows the outlet in the sheet|seat package based on 5th Embodiment. FIG. 2 is a diagram showing a conventional sheet packaging body (with an outlet configured with a linear slit). FIG. 2 is a diagram showing a conventional sheet package (with an outlet configured with a rectangular slit).

Embodiments of the present invention will be described in detail with reference to the drawings. Note that common parts in each figure may be given the same reference numerals and explanations may be omitted. Further, in order to facilitate understanding, the scale of each member in each drawing may be different from the actual scale.

In this specification, a three-dimensional orthogonal coordinate system of three axes (X direction, Y direction, Z direction) is used, the left-right direction or longitudinal direction (hereinafter referred to as the first direction) of the sheet package is the X direction, and the depth The direction or lateral direction (hereinafter referred to as the second direction) is the Y direction, and the vertical direction or height direction is the Z direction. Moreover, the upper side refers to the upper side of the top surface of the packaging bag in the height direction (Z direction) of the sheet packaging body.

FIG. 1 is a diagram showing a sheet package according to a first embodiment of the present invention. FIG. 2 is a top view of the sheet package according to the first embodiment. FIG. 3 is a diagram showing an outlet in the sheet package according to the first embodiment. FIG. 4 is a diagram showing an outlet after opening in the sheet package according to the first embodiment. 5 is a diagram illustrating the usage state of the sheet package according to the first embodiment, FIG. 6 is a diagram showing the vicinity of the outlet in FIG. 5 viewed from the front, and FIG. 7 is a diagram showing the vicinity of the outlet in FIG. 5. 8 is a view of the vicinity viewed from the right side, and FIG. 8 is an enlarged view of the end of the outlet in FIG. 7.

The sheet package 100 according to the first embodiment has a packaging bag 10 and an outlet 20, as shown in FIG. The sheet package 100 is an example of a sheet package according to the present invention. Furthermore, the packaging bag 10 is an example of a packaging bag constituting the sheet packaging body according to the present invention, and the outlet 20 is an example of an outlet formed in the packaging bag.

The packaging bag 10 has a top surface 11, a bottom surface 12, a front surface 13, a back surface 14, side surfaces 15, and side surfaces 16. In the sheet package 100, the top surface 11 and the bottom surface 12 face each other in the vertical direction (Z direction), the front surface 13 and the back 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). ). The side surfaces 15 and 16 are continuous with the top surface 11, the bottom surface 12, the front surface 13, and the back surface 14 (see FIG. 1).

The packaging bag 10 accommodates a plurality of sheets (or a plurality of sets) of sheets S. As shown in FIG. 1, the sheets S are stored in a packaging bag 10 as a laminate SL (hereinafter referred to as a sheet laminate) in which a plurality of sheets (or a plurality of sets) of sheets S are stacked. The sheet stack SL is housed in the packaging bag 10 so that the stacking direction (SD direction) of the sheets S is the height direction (Z direction) (see FIG. 1). The sheet stack SL is configured such that the sheets S can be pulled out one by one (or one set at a time) through an outlet 20 (opening OP) formed in the packaging bag 10 (see FIG. 5).

From the viewpoint of pulling out the sheets S one by one or one set at a time, the sheet stack SL is preferably one in which the sheets S are folded and stacked alternately (a so-called pop-up sheet stack SL). Further, the form of the sheet stack SL is not limited to one that can be pulled out in a pop-up manner, but may be one in which multiple sheets (or multiple sets) of sheets S are simply stacked, or one in which each sheet S is stacked in a folded state. But that's fine.

The dimensions of the sheet laminate SL are such that the length of the sheet package 100 in the first direction (X direction) is 155 mm or more and 215 mm or less, and the depth direction (Y The length in the direction) can be 90 mm or more and 110 mm or less, and the height in the height direction (Z direction) can be 30 mm or more and 50 mm or less. Such tissue paper laminates can be produced, for example, by rotary or multi-stand interfolders.

The use of the sheet S is not particularly limited, and can be applied to, for example, sanitary thin paper such as tissue paper, toilet paper, kitchen paper, and paper towel. These sanitary thin papers also include sanitary thin papers containing moisturizing ingredients (for example, lotion tissues, etc.). Further, the use of the sanitary thin paper constituting the sheet S is not particularly limited, and can be applied to any of industrial, home, and portable uses. In addition, the sheet package 100 of this embodiment is suitably used for household tissue paper among these.

The number of plies of the sheet S is not particularly limited, but it can be one or more, preferably one ply, and more preferably two plies (two sheets stacked). Further, the shape of the sheet S is not particularly limited, but, for example, it is preferable that the shape of the two-ply sheet in a folded state is rectangular in plan view.

The material of the sheet S is not particularly limited, but for example, a sheet of paper, nonwoven fabric, or cloth can be used, and paper (paper sheet) is preferable. Note that when the sheet S is a paper sheet, a base paper whose main raw material is pulp is used. As the pulp composition, a known composition for paper sheets can be used. For example, the blending ratio of pulp can be 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass.

Further, the pulp composition in the sheet S (paper sheet) is not particularly limited. For example, 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) can be used in any ratio. I can do it. Note that the ratio of softwood pulp to hardwood pulp is not limited, but is preferably 10:90 to 80:20, and more preferably a pulp composition in which the ratio of softwood pulp to hardwood pulp is higher. Furthermore, waste paper pulp may be used as the pulp contained in the sheet S (paper sheet).

The basis weight of the sheet S is not particularly limited, but depending on the number of plies, it is 5 g/m ² or more and 80 g/m ² or less in the case of paper, preferably 10 g/m ² or more and 15 g/m ² or less, and In this case, it is desirable that the amount is 20 g/m ² or more and 100 g/m ² or less. Note that the basis weight is measured in accordance with the regulations of JIS P 8124.

Further, the thickness of the sheet S (paper sheet) is not particularly limited, and a paper thickness measured under the environment of JIS P 8111 (1998) can be adopted. For example, the paper thickness of the paper sheet constituting the sheet S can be 50 μm or more and 500 μm or less, preferably 60 μm or more and 330 μm or less, and more preferably 80 μm or more and 200 μm or less per 2 plies.

Further, the sheet S (paper sheet) may be embossed. Such embossing is performed by pressing embossments (not shown) onto both ends of paper sheets using a known contact embossing method, edge embossing method, etc., and stacking multiple paper sheets (or multiple sets), or by using a known pin. The embossing method involves pricking a paper sheet with a pin (not shown) to form a pin embossing on one side of the paper sheet, and the known embossing method involves heating and melting a water-soluble adhesive (starch, etc.). In some cases, embossing is formed by gluing stacked paper sheets (not shown).

The form of the packaging bag 10 is not particularly limited, and may be formed of a flexible film, for example. Moreover, the packaging bag 10 is manufactured by so-called caramel packaging. Specifically, both ends of the cylindrical flexible film are formed with seal parts 30 and 40 that are folded and bonded (sealed) (see FIG. 1). Note that the packaging form of the sheet packaging body 100 is not limited to such caramel packaging, but can also be a gusset-like packaging in which both ends or either end of a cylindrical flexible film is heat-sealed. (manufactured in so-called pillow packaging).

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

Among these flexible films, polyethylene, polypropylene, polyethylene terephthalate, and the like are preferred because they are flexible and easy to handle, have high sealability when heat-sealed, and are inexpensive. Further, polyethylene is preferred because it is odorless, has excellent water resistance and chemical resistance, and can be mass-produced at low cost. As the polyethylene, high density polyethylene, low density polyethylene, etc. can be used. Further, polypropylene is preferable from the viewpoints of being strong, easy to mold, good coloring during printing, and being able to impart gloss.

The form of the flexible film forming the packaging bag 10 is not particularly limited, and may be a single-layer film formed of a single layer of the above-mentioned resin, a laminate film formed by laminating the above-mentioned resins, or a laminate film formed of two or more of the above-mentioned resins. It may also be a mixed film formed of a mixture of.

The thickness of the flexible film forming the packaging bag 10 is not particularly limited, and is preferably 10 μm or more and 100 μm or less, more preferably 15 μm or more and 70 μm or less, and even more preferably 20 μm or more and 60 μm or less. By setting the thickness of the flexible film to 20 μm or more, sufficient strength as the packaging bag 10 in which the sheet S is accommodated can be ensured. Moreover, by setting the thickness of the flexible film to 100 μm or less, flexibility and lightness of the packaging bag 10 can be ensured, and costs can be suppressed.

Note that the material forming the packaging bag 10 is not limited to the above-mentioned resin material such as the flexible film, and a paper material may also be used. In addition, the materials forming the packaging bag 10 include biodegradable materials (biodegradable plastic, biodegradable paper, etc.), biomass materials (renewable organic resources derived from living organisms such as biomass film, excluding fossil resources). ) can be used.

Further, the outlet 20 is formed on the top surface 11 of the packaging bag 10. Specifically, the outlet 20 is located between the center (longitudinal center) 11a of the top surface 11 of the packaging bag 10 in the first direction (X direction) of the sheet packaging body 100 and the packaging bag in the second direction (Y direction). 10, and extends in the first direction (X direction) with a predetermined width in the second direction (Y direction) (see FIG. 1). The sheet S is pulled out from this outlet 20 (see FIG. 6).

The dimensions of the outlet 20 can be arbitrarily determined depending on the capacity of the packaging bag 10 and the dimensions of the sheet S. For example, in the first direction (X direction), the length L2 of the outlet 20 can be less than 100%, preferably 5% or more, of the length L1 of the packaging bag 10 (top surface 11). It is 80% or less, more preferably 10% or more and 75% or less (see FIG. 2).

Further, in the second direction (Y direction), the width W2 of the outlet 20 can be set to 5% or more and 35% or less, preferably 10% with respect to the width W1 of the packaging bag 10 (top surface 11). It is 30% or less, more preferably 15% or more and 25% or less (see FIG. 2). Note that the width W2 of the outlet 20 corresponds to the distance W2 between the slit 21 and the second slit 22.

The outlet 20 has a first slit 21, a second slit 22, and a third slit 23. The first slit 21 is an example of a first slit that constitutes an outlet of the sheet package according to the present invention. The second slit is an example of a second slit that constitutes the outlet of the sheet package according to the present invention. The third slit is an example of a third slit that constitutes an outlet of the sheet package according to the present invention.

The first slit 21 extends in the first direction (X direction). The first slit 21 is formed by a straight line extending in the first direction (X direction), and is arranged at the center 11b of the top surface 11 (see FIGS. 1 and 2). Here, the first direction (X direction) indicates a direction along a predetermined direction on the top surface 11 of the packaging bag 10.

Further, the second slit 22 extends in the first direction (X direction) with a distance W2 from the first slit 21 in the second direction (Y direction) intersecting the first direction (X direction). The second slit 22 is formed by a straight line extending along the first direction (X direction), and is arranged at the center 11b of the top surface 11 along with the first slit 21 in the second direction (Y direction) (Fig. 1, see Figure 2). Here, the second direction (Y direction) that intersects with the first direction (X direction) is a direction perpendicular to a direction along a predetermined direction on the top surface 11 of the packaging bag 10 or a direction that intersects with the brace. Show direction.

Further, the third slit 23 is arranged inside the outlet 20, connected to the first slit 21 and the second slit 22, and extends in the second direction (Y direction). The third slit 23 is formed in a straight line extending along the second direction (X direction). The third slit 23 is arranged at a position corresponding to the inner side of the area where the outlet 20 (opening OP) of the top surface 11 is configured, and is continuous with each of the first slit 21 and the second slit 22 (Fig. 1, see Figure 2).

The form of each slit 21, 22, 23 is not particularly limited, and may be configured, for example, as a continuous cut, an elongated opening, or the like. Note that the continuous cuts may be formed by breaking perforations (intermittent cuts). In this embodiment, each slit 21, 22, 23 of the outlet 20 formed on the top surface 11 of the packaging bag 10 is configured with a perforation P (see FIGS. 1 to 4). By tearing this perforation P, an outlet 20 (opening OP) opening in the top surface 11 of the packaging bag 10 is formed (see FIGS. 5 and 6).

The perforations P forming each of the slits 21, 22, and 23 are formed by alternately arranging cuts C and ties T (see FIG. 3). The cut C is a cut that penetrates the top surface 11, and the tie T is an uncut portion between two adjacent cuts C. The length of the cut C and the length of the tie T are arbitrary. The length of each cut C can be 0.8 mm or more and 5.5 mm or less, preferably 1.5 mm or more and 5 mm or less, and more preferably 2.5 mm or more and 4.5 mm or less. Further, the length of each tie can be 0.3 mm or more and 5.0 mm or less, preferably 0.4 mm or more and 2.0 mm or less, and more preferably 0.5 mm or more and 1.5 mm or less.

In the sheet packaging body 100 of this embodiment, the position where the third slit 23 is arranged inside the outlet 20 is not limited, but preferably, the third slit 23 is arranged at the center 20a of the outlet 20. Here, the center 20a of the outlet 20 is the area surrounding the center (or centroid) of the outlet 20 (see FIGS. 1 to 3).

In this embodiment, the center 23a of the third slit 23 is located approximately at the center (or centroid) of the outlet 20, and one end 23b of the third slit 23 is continuous with the center 21a of the first slit 21, and The other end 23c of the slit 23 is continuous with the center 22a of the second slit 22 (see FIG. 3). Note that the centers 21a, 22a, and 23a of each slit 21, 22, and 23 correspond to a range of about one-third of the entire slit including the center of each slit.

The sheet package 100 of this embodiment has knobs 50 and 60 that cover the outlet 20. Here, covering the outlet 20 means that the opening OP portion of the outlet 20 except for each slit 21, 22, and 23 can be closed.

The knob 50 is surrounded by a portion 21d of the first slit 21, a portion 22d of the second slit 22, the third slit 23, and a base end 51. A portion 21d of the first slit 21 is configured between the center 21a and one end 21b of the first slit 21. A portion 22d of the second slit 22 is configured between the center 22a and one end 22b of the second slit 22.

The base end 51 constitutes the end 20b of the outlet 20 in the first direction (X direction). This base end 51 is configured between one end 21b of the first slit 21 and one end 22b of the second slit 22. The base end 51 constitutes an end portion of the knob 50 that can serve as a starting point from which the knob 50 is folded back. In this embodiment, the knob 50 is constituted by a part G1 of the top surface 11, and can be pinched or grasped with a fingertip when opening the outlet 20 (see FIGS. 3 to 5).

The knob 60 is surrounded by a portion 21e of the first slit 21, a portion 22e of the second slit 22, the third slit 23, and a base end 61. A portion 21e of the first slit 21 is configured between the center 21a of the first slit 21 and the other end 21c. A portion 22e of the second slit 22 is configured between the center 22a of the second slit 22 and the other end 22c.

The base end 61 constitutes the end 20b of the outlet 20 in the first direction (X direction). This base end 61 is configured between the other end 21c of the first slit 21 and the other end 22c of the second slit 22. The base end 61 constitutes an end portion of the knob 60 that can serve as a starting point from which the knob 60 is folded back. In this embodiment, the knob 60 is constituted by a part G2 of the top surface 11, and can be pinched or grasped with a fingertip when opening the outlet 20 (see FIGS. 3 to 5).

In this embodiment, from a different perspective, the outlet 20 is surrounded by the first slit 21, the second slit 22, and the base ends 51 and 61 (see FIGS. 1 to 3). Specifically, both ends 20b and 20c of the outlet 20 in the first direction (X direction) correspond to the base ends 51 and 61 of the knobs 50 and 60, and both ends of the outlet 20 in the second direction (Y direction) correspond to the proximal ends 51 and 61 of the knobs 50 and 60, respectively. The portions 20d and 20e correspond to the first slit 21 and the second slit 22 (see FIGS. 3 and 4).

Then, by picking the knob 50 and pulling it from the center 20a of the outlet 20 toward the end 20b, a portion G1 of the top surface 11 is opened. Further, by picking the knob 60 and pulling it from the center 20a of the outlet 20 toward the end 20c, a portion G2 of the top surface 11 is opened. This opens the outlet 20 (see FIGS. 3 and 4).

In the sheet package 100 of this embodiment, the distance D2 from the center 20a of the outlet 20 to the base end 51 along the first direction (X direction) is the distance D2 from the base end 51 to the top surface along the first direction (X direction). 11 to the end edge 11c on the base end 51 side. An edge 11c on the base end 51 side of the top surface 11 along the first direction (X direction) from the base end 51 is the base end of the knob 50 that constitutes the end 20b of the outlet 20 in the first direction (X direction). 51 along the first direction (X direction).

Further, the distance D4 from the center 20a of the outlet 20 to the base end 61 along the first direction (X direction) is the distance D4 from the base end 61 to the end of the top surface 11 on the base end 61 side along the first direction (X direction). It is shorter than the distance D3 to the edge 11d (see FIG. 2). The edge 11d of the top surface 11 on the base end 61 side along the first direction (X direction) from the base end 61 is the base end of the knob 60 that constitutes the end 20c of the outlet 20 in the first direction (X direction). 61 along the first direction (X direction) is the shorter edge.

In the present embodiment, as described above, the first slit 21 and the second slit 22, which extend in the first direction (X direction) with an interval W2 in the second direction (Y direction), are connected to each other in the second direction (Y direction). By arranging the third slit 23 extending in the direction (direction) inside the outlet 20, the outlet 20 can be opened along the first slit 21 and the second slit 22 starting from the third slit 23 (Fig. 1 to Figure 5). In addition, a part G of the top surface 11 that covered the outlet 20 before opening (hereinafter referred to as a part G of the top surface 11) is separated by the third slit 23, and the part G of the top surface 11 that covered the outlet 20 before opening is separated by the third slit 23. It is connected to both ends 20b and 20c in one direction (X direction) (see FIGS. 4 and 5).

In such a configuration, when the sheet S is pulled out from the outlet 20, part G (G1, G2) of the top surface 11 divided by the third slit 23 is turned over by the sheet S, so that the sheet S is pulled out from the outlet 20. A fold line F is formed at both ends 20b and 20c. As a result, in this embodiment, the friction between both ends 20b and 20c of the outlet 20 and the sheet S to be pulled out is alleviated, and the sheet S can be smoothly taken out from the outlet 20 (see FIGS. 4 and 5). .

Furthermore, in this embodiment, the outlet 20 (opening OP) having an opening width of the interval W2 is widened between the first slit 21 and the second slit 22, so that it is easy to insert a fingertip into the opened outlet 20. Therefore, even when taking out the first sheet or the first set of sheets S accommodated in the packaging bag 10, or when taking out the sheet S that has fallen into the packaging bag 10, it is easy to take out the sheet S (Fig. 4 , see Figure 5).

Further, in this embodiment, the folds F formed at both ends 20b and 20c of the outlet 20 act as resistance against the weight of the sheet S held in the outlet 20 during use. As a result, the holding force of the sheet S is maintained at both ends 20b and 20c of the outlet 20, and it is possible to prevent the sheet S from falling into the packaging bag 10 during use (hereinafter referred to as falling of the sheet S). (See Figures 5 to 8).

In addition, in this embodiment, the folds F formed at both ends 20b and 20c of the ejection port 20 bend with respect to the sheet S from the ejection port 20, and the frictional force (or (resistance force) can escape (or be dispersed) around the opening 20. As a result, even if there are few remaining sheets S accommodated in the packaging bag 10 (even if the weight of the sheet packaging body 100 becomes lighter), the packaging bag 10 can be lifted up when the sheet S is pulled out from the outlet 20. (hereinafter referred to as lifting of the packaging bag 10) can be prevented (see FIGS. 4 to 8).

In addition, in this embodiment, a portion G (G1, G2) of the top surface 11 that covered the outlet 20 before opening remains at both ends 20b, 20c of the outlet 20 after the outlet 20 is opened. It is connected to the. Therefore, in this embodiment, no broken pieces (cut ends, small pieces, fragments, etc. cut off from the packaging bag 10) are generated when the outlet 20 is opened (see FIGS. 1 to 8).

In this embodiment, as described above, the third slit 23 arranged at the center 20a of the outlet 20 is connected to the first slit 21 and the second slit 22, so that the starting point is the center 20a of the outlet 20. The outlet 20 can be opened, and the outlet 20 can be easily opened (see FIGS. 1 to 5). Furthermore, in this embodiment, since the outlet 20 is opened starting from the center 20a of the outlet 20, it is easy to form folds F at both ends 20b and 20c of the outlet 20 (see FIGS. 4 to 8). .

Further, in the present embodiment, a portion G (G1, G2) of the top surface 11 divided by the third slit 23 is located at both ends of the outlet 20 along the first direction (X direction) from the center 20a of the outlet 20. The dimensions up to the portions 20b and 20c are approximately the same, and the folds F can be formed in a well-balanced manner at both ends 20b and 20c of the outlet 20 (see FIGS. 4 and 5). Thereby, the sheet S can be smoothly taken out from the takeout port 20 with high precision. Further, it is possible to suppress the falling of the sheet S and the lifting of the packaging bag 10 with high accuracy.

In this embodiment, as described above, the knobs 50 and 60 that cover the outlet 20 are located at the portions 21d and 21e of the first slit 21, the portions 22d and 22e of the second slit 22, the third slit 23, and the proximal end 51. , 61, so that part G (G1, G2) of the top surface 11 covering the outlet 20 can be pinched or grasped with the fingertips. Therefore, the work of unsealing the outlet 20 becomes easier. Further, after opening the outlet 20, it is easy to return the knobs 50 and 60 to their original state (covering the outlet 20) (see FIGS. 1 to 8).

Furthermore, in the present embodiment, the base ends 51 and 61 of the knobs 50 and 60 constitute the ends 20b and 20c of the outlet 20 in the first direction (X direction), so that the sheet S is pulled out from the outlet 20. When folded, folds F are likely to be formed at both ends 20b and 20c of the outlet 20 (see FIGS. 1 to 8). Therefore, in the present embodiment, it is possible to suppress the falling of the sheet S and the lifting of the packaging bag 10 with high precision while maintaining smooth removal of the sheet S from the outlet 20.

In this embodiment, as described above, the outlet 20 is surrounded by the base ends 51 and 61 of the knobs 50 and 60 together with the first slit 21 and the second slit 22, so that the outlet 20 is surrounded in the first direction (X direction). ) is likely to form folds F at both ends 20b and 20c (see FIGS. 1 to 8). Therefore, in this embodiment, it is possible to smoothly take out the sheet S from the outlet 20 with high precision by easily inserting a fingertip into the outlet 20 after opening.

Further, in this embodiment, the outlet 20 is surrounded by the first slit 21 and the second slit 22 together with the proximal ends 51 and 61 of the knobs 50 and 60, so that there is a space between the first slit 21 and the second slit 22. The outlet 20 (opening OP) whose opening width is increased by the interval W2 can be configured with high precision. Therefore, in the present embodiment, the first sheet (or first set) of sheets S accommodated in the packaging bag 10 or the first sheet S in the packaging bag 10 is The fallen sheet S can be easily taken out with high precision (see FIGS. 1 to 8).

In this embodiment, as described above, the distance from the base ends 51, 61 of the knobs 50, 60 to the edges 11c, 11d of the top surface 11 on the base ends 51, 61 side along the first direction (X direction) By shortening the distances D2 and D4 from the center 20a of the outlet 20 to the base ends 51 and 61 of the knobs 50 and 60 along the first direction (X direction) with respect to D1 and D3, respectively, the outlet 20 can be The dimension in the first direction (X direction) can be reduced (see FIG. 2). As a result, in this embodiment, the holding force of the sheet S is increased at both ends 20b and 20c of the outlet 20, and it is possible to suppress the fall of the sheet S with high accuracy (see FIGS. 4 to 8).

In addition, in this embodiment, as described above, since the folds F are formed at both ends 20b and 20c of the outlet 20, even if the dimension of the outlet 20 in the first direction (X direction) becomes smaller, Smooth withdrawal of the sheet S is not hindered, and lifting of the packaging bag 10 is suppressed (see FIGS. 4 to 8). Furthermore, in this embodiment, by reducing the dimension of the outlet 20 in the first direction (X direction), it is possible to suppress the intrusion of foreign substances such as dirt and dust from the outlet 20 into the packaging bag 10. (See Figures 4 to 8).

FIG. 9 is a diagram showing an outlet in the sheet package according to the second embodiment. In the second embodiment, parts common to the first embodiment are given the same reference numerals as in FIG. 3, and the explanation thereof will be omitted. In the sheet package 100 of the second embodiment, the third slit 23 is formed in a straight line that is inclined (or braced) with respect to the second direction (X direction).

In the second embodiment, one end 23b of the third slit 23 is continuous with the center 21a near the other end 21c of the first slit 21, and the other end 23c of the third slit 23 is continuous with the center 22a near the one end 21b of the first slit 21. (see Figure 9).

In the second embodiment, by inclining the third slit 23 with respect to the second direction (X direction) in this way, the length of the third slit 23 in the second direction (Y direction) is (a configuration in which the third slit 23 extends along the second direction (X direction)). Therefore, when opening (or unsealing) the outlet 20, it becomes easier to put a finger on the third slit 23, making it easier to open the outlet 20.

FIG. 10 is a diagram showing an outlet in the sheet package according to the third embodiment. In the third embodiment, parts that are common to the first embodiment are given the same reference numerals as in FIG. 3, and the description thereof will be omitted. In the sheet package 100 of the third embodiment, at least a portion of the third slit 23 is curved.

Here, curvature refers to bending in a concave manner. Furthermore, the phrase "at least a portion of the third slit 23 is curved" refers to a case where the entire third slit 23 is curved or a case where a portion of the third slit 23 is curved. Note that the number of curved portions of the third slit 23 is not limited to one, and may be plural.

In the third embodiment, the entire third slit 23 is formed in a curved shape that is convex from the center 20a of the outlet 20 toward the end 20b. In other words, the third slit 23 has a convex portion R3 that curves convexly from the center 20a of the outlet 20 toward the end portion 20b.

In the third embodiment, at least a portion of the third slit 23 is curved in this way, so that when opening (or unsealing) the outlet 20, it becomes easier to put a finger on the curved third slit 23. Therefore, the outlet 20 can be opened (or unsealed) by using the inside of the outlet 20 where the third slit 23 is arranged as a trigger. Therefore, in the third embodiment, opening of the outlet 20 becomes easier.

FIG. 11 is a diagram showing an outlet in the sheet package according to the fourth embodiment. In the fourth embodiment, parts common to the first embodiment are given the same reference numerals as in FIGS. 3 and 10, and description thereof will be omitted. In the sheet package 100 of the fourth embodiment, a portion 23d of the third slit 23 is formed in a curved shape that is convex from the center 20a of the outlet 20 toward the end 20c. A portion 23d of the third slit 23 is configured closer to the first slit 21.

Further, a portion 23e of the third slit 23 is formed in a curved shape that is convex from the center 20a of the outlet 20 toward the end 20b. A portion 23e of the third slit 23 is configured closer to the first slit 22. In other words, the third slit 23 has convex portions R31 and R32 curved in an S-shape (see FIG. 11).

In the fourth embodiment, by curving the third slit 23 in an S-shape in this way, it becomes easy to put a finger on both the end 20b side of the outlet 20 and the end 20c side of the outlet. Therefore, the outlet 20 can be opened (or unsealed) using a trigger from the end 20b side of the outlet 20 or from the end 20c side of the outlet 20, where the third slit 23 is arranged. . Therefore, in the fourth embodiment, opening of the outlet 20 becomes easier.

FIG. 12 is a diagram showing an outlet in the sheet package according to the fifth embodiment. In the fifth embodiment, parts common to the first embodiment are given the same reference numerals as in FIG. 3, and the description thereof will be omitted. In the sheet package 100 of the fifth embodiment, the distance W2 between the first slit 21 and the second slit 22 in the second direction (Y direction) is set from the center 20a of the outlet 20 in the first direction (X direction). It becomes larger toward the ends 51 and 61.

In the fifth embodiment, the width (interval W2) in the second direction (Y direction) of the part G1 of the top surface 11 that covers the outlet 20 is the center 20a of the outlet 20 along the first direction (X direction). The width becomes wider toward the end portion 20b. Further, the width (interval W2) in the second direction (Y direction) of the part G2 of the top surface 11 that covers the outlet 20 is from the center 20a of the outlet 20 to the end 20c along the first direction (X direction). It is wide towards the end.

Further, in the fifth embodiment, at least one of the first slit 21 and the second slit 22 is convex on the inside of the outlet 20. Here, at least one of the first slit 21 and the second slit 22 means that when only the first slit 21 is convex inside the outlet 20, only the second slit 22 is convex inside the outlet 20. In this case, both the first slit 21 and the second slit 22 are convex inside the outlet 20.

In the fifth embodiment, both the first slit 21 and the second slit 22 are convex inside the outlet 20. Specifically, the first slit 21 has a convex portion R1 that is convex toward the second slit 22 facing in the second direction (Y direction). Further, the second slit 22 is shown to have a convex portion R2 toward the first slit 21 facing in the second direction (Y direction).

Incidentally, the slits 21 and 22 which are convex on the inside of the outlet 20 may all be formed in a curved shape, or some may be formed in a curved shape and the other part may be formed in a straight line. Alternatively, they may all be formed in a straight line. In the fifth embodiment, the first slit 21 having the convex portion R1 is entirely formed in a curved shape. Further, the second slit 22 having the convex portion R2 is also entirely formed in a curved shape.

In the fifth embodiment, a portion G (G1, G2) of the top surface 11 that covers the outlet 20 constitutes the knobs 50, 60, and the knobs 50, 60 extend from the distal ends 52, 62 toward the proximal ends 51, 61. It becomes wider. Therefore, when opening the outlet 20, the outlet 20 can be opened stably by pulling the knobs 50, 60 from the center 20a of the outlet 20 toward both ends 20b, 20c.

In addition, in the fifth embodiment, part G1 (knob 50) and part G2 (knob 60) of the top surface 11 covering the outlet 20 extend from the base ends 51, 61 to the tips 52, 62. The tips 52 and 62 of the knobs 50 and 60 correspond to the third slit 23 provided at the center 20a of the outlet 20. As a result, the tips 52 and 62 of the knobs 50 and 60 (the third slit 23) are easily visible, and the outlet 20 is opened (or unsealed) using the inside of the outlet 20 where the third slit 23 is arranged as a trigger. be able to. Therefore, in the fifth embodiment, opening of the outlet 20 becomes easier.

Furthermore, in the fifth embodiment, as described above, at least one of the first slit 21 and the second slit 22 is convex inside the outlet 20, so that the second direction (Y direction) of the outlet 20 The opening width of the interval W2 becomes narrower. Specifically, flaps 70 and 80 facing each other in the second direction (Y direction) are formed at both ends 20d and 20e of the outlet 20 (see FIG. 12).

The flap 70 is configured between a base end 71 and a distal end 72, and when the sheet S to be pulled out rubs against the distal end 72, it can bend upward from the base end 71 as a starting point. Note that the base end 71 constitutes the end portion 20d of the outlet 20. Further, the flap 80 is configured between a base end 81 and a distal end 82, and when the sheet S to be pulled out rubs against the distal end 82, it can bend upward from the base end 81 as a starting point. Note that the base end 81 constitutes the end portion 20e of the outlet 20 (see FIG. 12).

In the fifth embodiment, as described above, at least one of the first slit 21 and the second slit 22 is convex inside the outlet 20, so that the sheet S pulled out from the outlet 20 is placed above the outlet 20. It is held in the outlet 20 in a raised state. That is, it is possible to suppress the sheet S held in the outlet 20 from falling or tilting.

Furthermore, even if the knobs 50, 60 cannot fully cover the outlet 20 even if an attempt is made to return the knobs 50, 60 to their original state, foreign matter such as dust and dirt may enter the vicinity of the center 20a of the outlet 20. It tends to be easy. Therefore, in the fifth embodiment, the opening width of the outlet 20 in the second direction (Y direction) is narrowed, thereby suppressing the intrusion of foreign substances such as dirt and dust from the outlet 20 into the packaging bag 10. (See Figure 12).

Hereinafter, the present invention will be further described in detail using Examples. Evaluation of Examples and Comparative Examples was performed by the following tests.

[Sheet package (test specimen)]
As a test specimen, a sheet package 100 in which a sheet laminate SL in which a plurality of sheets S were stacked was housed in a packaging bag 10 was prepared (see FIGS. 1, 11, and 12). The sheet laminate SL is made of tissue paper (basis weight: 10.7 g/m ² , paper thickness: 110 μm, number of plies: 2 plies, Number of sets: 150 sets (300 sheets), dimensions: height of about 40 mm, width of about 178 mm, and length of about 100 mm) were used. Further, the sheet laminate SL was housed in the packaging bag 10 so that the stacking direction (SD direction) was in the height direction (Z direction) of the sheet package 100 (see FIGS. 1, 11, and 12). Further, as the material of the packaging bag 10, polyethylene (PE) with a thickness of 50 μm was used. The packaging form of the packaging bag 10 was such that both sides 15 and 16 of the sheet packaging body 100 were sealed with caramel packaging (sealed portions 30 and 40 were formed). The dimensions of the packaging bag 10 were a length L1 of about 180 mm in the first direction (X direction), a width W1 of about 100 mm in the depth direction (Y direction), and a height of about 40 mm in the height direction (Z direction). Further, a perforation P is formed on the top surface 11 of the packaging bag 10 to form an outlet 20 through which the sheet S is pulled out.

[Takeout resistance value]
Place the above-mentioned test specimen (sheet package 100) on a flat mounting surface, pull out the tissue paper (sheet S) by about 40 mm from the outlet 20 (opening OP) of the packaging bag 10, and then pull out the tissue paper (sheet S) above the pulled sheet S. Clip the tip (the central part of the sheet package 100 in the first direction (X direction)) with a eyeball clip (manufactured by KOKUYO Co., Ltd., "Cree-17"), and push it into one hole in the handle of this eyeball clip. Retrieval resistance when the sheet S is pulled out vertically at a constant speed for a time of 0.4 or more and 0.6 seconds or less by hooking the hook of a pull gauge (IMADA DEGTAL FORCE GAUGE Z2-20, manufactured by IMADA Co., Ltd.) The value (unit: N) was measured. If the average extraction resistance value when pulling out 1 to 10 sets of sheets S is 1.1 cN or less, it is evaluated as good (sheet S is easy to take out), and if it exceeds 1.1 cN, it is evaluated as good. (Sheet S is difficult to take out). In addition, if the average extraction resistance value when pulling out 11 to 20 sets of sheets S is 1 cN or less, it is evaluated as good (sheet S is easy to take out), and if it exceeds 1 cN, it is evaluated as not good (sheet S is easy to take out). S was rated as "difficult to take out".

[Depression]
When sheets S are successively pulled out from the first set to the last set from the sheet stack SL through the outlet 20 of the packaging bag 10, the next sheet S after the pulled out sheet S falls into the packaging bag 10. The first number of sets (in which sheet S fell) and the number of falls were measured. If the number of depressions was 0, it was evaluated as good (hard to get depressed), and if the number of depressions was 1 or more, it was evaluated as bad (easy to get depressed).

[Lifting]
When the sheets S were continuously pulled out from the first set to the last set from the sheet stack SL through the outlet 20 of the sheet package 100, the number of first sets of sheets S that lifted the packaging bag 10 was measured. . If lifting did not occur, it was evaluated as good 〇 (hard to lift), and if lifting occurred, it was evaluated as poor × (easy to lift).

[Occurrence of fragments]
When the outlet 20 was opened, it was confirmed that broken pieces (cut ends, small pieces, fragments, etc. cut off from the packaging bag) were generated. Regarding the occurrence of broken pieces, if the broken pieces were not separated from the packaging bag 10, it was evaluated as good (no broken pieces were generated), and when the broken pieces were separated, it was rated as poor (× (broken pieces were generated)).

Examples and comparative examples will be described below.

[Example 1]
In the sheet packaging body 100, the first slit 21 extends linearly along the first direction (X direction), and the first slit 21 has an interval in the second direction (Y direction) intersecting the first direction (X direction). A second slit 22 that opens W2 and extends linearly along the first direction (X direction), and a second slit that is arranged inside the outlet 20 and connected to the first slit 21 and the second slit 22 respectively. An outlet 20 having a third slit 23 linearly extending in the direction (Y direction) was provided (see FIGS. 1 to 3). Further, the dimension of the outlet 20 (length L2 of the outlet 20 in the first direction (X direction)) was 90 mm. The produced test specimen was evaluated for extraction resistance, depression, lifting, and occurrence of fragments. The results are shown in Table 1.

[Example 2]
A test specimen was prepared in the same manner as in Example 1, except that the third slit 23 was inclined in a straight line (inclined straight line) with respect to the second direction (X direction), and the specimen was lifted and fractured. The occurrence of fragments was evaluated. The results are shown in Table 1.

[Example 3]
The third slit 23 is formed in a curved shape that is convex from the center 20a of the outlet 20 toward the end 20b (the entire third slit 23 constitutes a convex portion R3 curved in a convex shape) (FIG. 10). A test specimen was prepared in the same manner as in Example 1, except for the following: Lifting and generation of broken pieces were evaluated. The results are shown in Table 1.

[Example 4]
A portion 23d of the third slit 23 is formed in a curved shape convex from the center 20a of the outlet 20 toward the end 20c, and a portion 23e extends from the center 20a of the outlet 20 to the end 20b. A test specimen was produced in the same manner as in Example 1, except that the third slit 23 was configured to have a convex curved shape (the third slit 23 has convex portions R31 and R32 curved in an S-shape) (see FIG. 11). The occurrence of lifting and fragmentation was evaluated. The results are shown in Table 1.

[Example 5]
The distance W2 between the first slit 21 and the second slit 22 along the second direction (Y direction) extends from the center 20a of the outlet 20 in the first direction (X direction) to the base ends 51, 61. A test specimen was prepared in the same manner as in Example 1, except that the specimen was configured to become larger toward the end (see FIG. 12), and lifting and generation of fragments were evaluated. The results are shown in Table 1.

[Comparative example 1]
Same as Example 1 except that the outlet 20 was formed with a linear slit (see FIG. 13) and the dimension of the outlet 20 (the length of the outlet 20 in the first direction (X direction)) was 115 mm. It was evaluated as follows. The results are shown in Table 1.

[Comparative example 2]
Same as Example 1 except that the outlet 20 was formed with a rectangular slit (see FIG. 14) and the dimension of the outlet 20 (the length of the outlet 20 in the first direction (X direction)) was 105 mm. It was evaluated as follows. The results are shown in Table 1.

[Comparative example 3]
Evaluation was made in the same manner as in Comparative Example 2, except that the dimension of the outlet 20 (the length of the outlet 20 in the first direction (X direction)) was 90 mm (see FIG. 14). The results are shown in Table 1.

From Table 1, it is found that a line is formed inside the outlet 20 formed on the top surface 11 of the packaging bag 10, connected to the first slit 21 and the second slit 22, and arranged in a straight line along the second direction (Y direction). The sheet package 100 in which the extending third slit 23 was formed had good take-out resistance, depression, lifting, and generation of broken pieces (Example 1).

Further, the sheet packaging body 100 in which the third slit 23 is inclined linearly with respect to the second direction (X direction), the sheet packaging body 100 in which at least a part of the third slit 23 is curved, the first slit 21 and the second The sheet package 100 in which at least one of the slits 22 was convex inside the outlet 20 had good lifting performance and good occurrence of broken pieces (Examples 2 to 5).

On the other hand, the sheet package 100 in which the outlet 20 was formed with a linear slit or a rectangular slit was not good in at least one of the following: extraction resistance, depression, lifting, and generation of broken pieces (Comparative Example 1 , 2).

From these results, it was found that the outlet formed on the top surface of the packaging bag that accommodates a plurality of stacked sheets and through which the sheets are pulled out has a first slit extending in the first direction and a second direction intersecting the first direction. a second slit extending in the first direction with an interval from the first slit; and a third slit disposed inside the outlet and connected to the first slit and the second slit respectively and extending in the second direction. It has been found that the sheet packaging body having the above-described method is excellent in taking out the sheets.

Although the embodiments of the present invention have been described above, the present invention is not limited to specific embodiments, and various modifications and changes can be made within the scope of the invention described in the claims. .

100 Sheet packaging S Sheet (hygienic thin paper)
SL Sheet laminate 10 Packaging bag 11 Top G, G1, G2 Part 11a Center in longitudinal direction 11b Center in transverse direction 11c, 11d Edge 12 Bottom 13 Front 14 Back 15 Side 16 Side 20 Outlet 20a center 20b, 20c, 20d, 20e End P Perforation OP Opening 21 First slit 21a Center 21b One end 21c Other end 21d, 21e Part R1 Convex part 22 Second slit 22a Center 22b One end 22c Other end 22d, 22e Part R2 Convex part 23 Third slit 23a Center 23b One end 23c Other end R3, R31, R32 Convex portion C Cut T Tie 30 Seal portion 40 Seal portion 50 Knob 51 Base end 52 Tip 60 Knob 61 Base end 62 Tip 70 Flap 71 Base end 72 Tip 80 Flap 81 Base end 82 Tip F Crease L1 Length of top surface L2 Length of outlet W1 Width of top surface W2 Interval (width of outlet)
D1, D2 distance

Claims (7)

a packaging bag that accommodates a plurality of stacked sheets;
A sheet packaging body having an outlet formed on the top surface of the packaging bag, through which the sheet is pulled out,
The outlet is
a first slit extending in a first direction that is the longitudinal direction of the sheet package;
a second slit extending in the first direction with an interval from the first slit in a second direction that is the transverse direction of the sheet package that intersects with the first direction;
a third slit arranged inside the outlet, connected to the first slit and the second slit, respectively, and extending in the second direction ;
having a knob that covers the outlet;
The knob is surrounded by a portion of the first slit, a portion of the second slit, the third slit, and a base end,
The base end is formed on the top surface of the packaging bag and constitutes an end of the outlet in the first direction,
The length of the third slit in the second direction is shorter than the length of the first slit in the first direction and the length of the second slit in the first direction . The sheet package according to claim 1, wherein the third slit is located at the center of the outlet. The sheet package according to claim 1 or 2 , wherein the outlet is surrounded by the first slit, the second slit, and the base end. A distance from the center of the outlet to the base end along the first direction is shorter than a distance from the base end to an edge on the base side of the top surface along the first direction. The sheet package according to any one of 1 to 3 . According to any one of claims 1 to 4 , the distance between the first slit and the second slit along the second direction increases from the center of the outlet in the first direction toward the base end. Sheet packaging as described. The sheet package according to any one of claims 1 to 5 , wherein at least one of the first slit and the second slit is convex on the inside of the outlet. The sheet package according to any one of claims 1 to 6 , wherein at least a portion of the third slit is curved.

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