JP7015803B2 - Sheet packaging - Google Patents

Description

The present invention relates to a sheet package.

In the conventional sheet wrapping body, sanitary tissue paper such as toilet paper and kitchen paper is housed in a wrapping bag made of a resin film or the like. In recent years, due to changes in consumers' lifestyles, everyday items with high storability and stockability have tended to be preferred. Many products are being developed.

For example, in a long kitchen roll, it takes a certain period of time to use up one kitchen roll, and since it is often used when handling ingredients, packaging that can store the kitchen roll hygienically. A bag is required. Further, when tearing a packaging bag containing sanitary tissue paper, it is often not possible to tear it cleanly, and it is also required that the packaging bag constituting the sheet package is easy to open.

For example, Japanese Patent Application Laid-Open No. 2003-104449 (Patent Document 1) discloses a package for packaging roll-shaped kitchen paper. In this package, perforations for opening are provided in the vertical direction on the front surface of the package bag.

Japanese Patent Application Laid-Open No. 2003-104449

However, in the conventional sheet package, the user may forcibly open the package from the place where the perforation is not provided because the place where the perforation is provided or how to open the sheet package is not known. Therefore, a strong force is required to open the sheet package, which makes it difficult for some users to open it. In addition, since the place to open and the state after opening differ depending on the user, it may be difficult to take out the product from the packaging bag after opening. Furthermore, even when the product is opened along the perforations for opening, the packaging bag and handle of the sheet packaging tend to be torn over a wide range, and the remaining product is left in the packaging bag of the sheet packaging after opening. It may not be possible to keep it clean.

An object of the present invention is to provide a sheet package having excellent openability, take-out property, and storeability after opening.

A first aspect of the present invention is a sheet package having a sheet roll in which a sheet is wound in the circumferential direction of a tubular core and a packaging bag containing the sheet roll, wherein the sheet roll is a sheet package. At least one end face in the roll width direction faces the upper surface of the packaging bag, and the tubular core has an opening through which the end face side edge of the one end face side of the sheet roll opens. Provided is a sheet package in which a first slit overlapping the opening of the tubular core is formed.

In the first aspect, in the sheet package, at least one end surface of the sheet roll in the roll width direction faces the upper surface of the packaging bag. Further, the cylindrical core has an opening in which the edge on one end face side of the sheet roll opens. A first slit that overlaps with the opening of the tubular core is formed on the upper surface of the packaging bag. The opening of the tubular core communicates with the space inside the tubular core. The opening of the tubular core also includes the edge of the tubular core.

In the first aspect, since the first slit formed on the upper surface of the packaging bag overlaps with the opening communicating with such a space, the portion formed on the upper surface of the packaging bag is the tubular core. It is easy to bend with respect to the opening of. As a result, in the first aspect, when the packaging bag is opened, the first slit is easily caught by a finger, so that the packaging bag can be easily opened.

Further, in the first aspect, since the finger hung on the first slit is inserted into the space inside the tubular core through the opening of the tubular core, the finger does not directly hit the sheet roll. Therefore, when a finger is put on the first slit to break the first slit, it is possible to prevent the finger from hitting the sheet roll and damaging the sheet.

Further, in the first aspect, by pushing the finger from the first slit toward the opening of the tubular core, the finger is inserted into the space inside the tubular core from the first slit, and the first slit is easily inserted. Can be broken. Therefore, in the first aspect, the packaging bag can be opened with a small force.

Further, in the first aspect, since the packaging bag can be opened with a small force, the size of the opening opening of the packaging bag can be easily adjusted. In addition, since the size of the opening of the packaging bag can be easily adjusted, the size of the opening of the packaging bag can be reduced when the packaging bag is opened. Therefore, the remaining amount after the sheet roll is taken out even after the packaging bag is opened. The sheet roll can be protected from dust. Therefore, according to the first aspect, it is possible to provide a sheet package having excellent openability, take-out property, and storeability after opening.

A second aspect according to the present invention provides a package in which at least a part of the first slit overlaps with the central portion of the opening. Here, the central portion of the opening means the central region of the opening including the center of the opening. Further, at least a part of the first slit means that all or a part of the first slit overlaps with the central part of the opening.

In the second aspect, at least a part of the first slit overlaps the central portion of the opening, so that the first slit is always arranged on the upper surface so as to overlap the central portion of the opening of the tubular core. Become. Therefore, in the second aspect, when the packaging bag is opened, the finger is likely to be caught in the first slit, and the first slit is easily torn. Therefore, according to the second aspect, the openability of the sheet package can be improved.

A third aspect according to the present invention provides a sheet package in which the first slit is composed of at least one linear slit. In the present specification, at least one slit means that the first slit is composed of one or a plurality of slits. Further, the linear slit indicates that the shape of the slit is linear. In the third aspect, the formation of the first slit is easy by forming the first slit with such a linear slit.

Further, in the third aspect, since the first slit is such a linear slit, at least one end of the slit can be extended toward the side surface side of the packaging bag continuous with the upper surface. Therefore, in the third aspect, after breaking the first slit, the direction in which the packaging bag is torn tends to proceed from the upper surface to the side surface. Thereby, in the third aspect, the packaging bag can be easily opened from the upper surface to the side surface, so that the sheet roll can be easily taken out.

A fourth aspect of the present invention provides a sheet package in which at least two ends of the linear slit extend toward the same side of the side surface of the packaging bag. In the fourth aspect, at least two ends of the linear slits constituting the first slit extend toward the same side surface of the packaging bag, so that the first slit is broken in at least two directions. Since it is dispersed in the direction, the first slit is easily torn. Further, when the first slit is torn in at least two directions toward the same side surface of the packaging bag, a fragment corresponding to the opening of the packaging bag is formed, and by pinching the fragment, the sheet package is opened. Will be easier.

A fifth aspect of the present invention is a fifth aspect in which the first slit has a base portion that overlaps the opening portion and an extension portion that is continuous with the base portion and overlaps a part of the end surface of the tubular core near the end edge. To provide a sheet package having. In the fifth aspect, since the base portion of the first slit overlaps with the opening portion, the packaging bag can be opened through the base portion.

Further, since the extension portion of the first slit is continuous with the base portion and overlaps with a part of the end surface near the end edge of the opening, after the base portion is broken, the packaging bag may be further opened through the extension portion. can. As a result, after the first slit is broken, the packaging bag can be broken in the direction away from the first slit. Therefore, it becomes easier to open the packaging bag.

From a different point of view, when the first slit does not completely overlap the inner part of the opening, the base of the first slit overlaps with the opening, and the extension of the first slit does not overlap with the opening. It can be (a portion of the tubular core that overlaps a portion of the end face of the sheet roll near one end edge). Therefore, even if the position of the first slit formed on the upper surface of the packaging bag is slightly deviated from the opening, the openability of the packaging bag can be maintained high.

A sixth aspect according to the present invention provides a sheet package in which a second slit extending from the upper surface of the packaging bag to the side surface of the packaging bag is formed continuously with the first slit. In the sixth aspect, since the second slit continuous with the first slit is formed on the upper surface and the side surface of the packaging bag, the direction in which the packaging bag is opened is the second slit after the first slit is broken. Easy to go to. Therefore, in the sixth aspect, the packaging bag can be easily opened from the upper surface to the side surface of the packaging bag.

According to one aspect of the present invention, it is possible to provide a packaging bag having excellent openability, take-out property, and storeability after opening.

It is a figure which shows the sheet package which concerns on embodiment (1st Embodiment) of this invention. It is a figure which shows an example of the sheet roll housed in the packaging bag in the sheet package body which concerns on 1st Embodiment. It is a figure which expanded the side surface of the packaging bag and made it flush with the upper surface of the packaging bag in the sheet package body which concerns on 1st Embodiment. It is a figure which shows the use state (before opening) of the sheet package which concerns on 1st Embodiment. It is a figure which shows the use state (at the time of opening) of the sheet package which concerns on 1st Embodiment. It is a figure which shows the use state (at the time of opening) of the sheet package which concerns on 1st Embodiment. It is a figure which shows the use state (after opening) of the sheet package which concerns on 1st Embodiment. It is a figure which expanded the side surface of the packaging bag and made it flush with the upper surface of the packaging bag in the sheet package body which concerns on 2nd Embodiment. It is a figure which expanded the side surface of the packaging bag and made it flush with the upper surface of the packaging bag in the sheet package body which concerns on 3rd Embodiment. It is a figure which expanded the side surface of the packaging bag and made it flush with the upper surface of the packaging bag in the sheet package body which concerns on 4th Embodiment. It is a figure which expanded the side surface of the packaging bag and made it flush with the upper surface of the packaging bag in the sheet package body which concerns on 5th Embodiment. It is a figure which expanded the side surface of the packaging bag and made it flush with the upper surface of the packaging bag in the sheet package body which concerns on 6th Embodiment. It is a figure which expanded the side surface of the packaging bag and made it flush with the upper surface of the packaging bag in the conventional sheet package body (Comparative Example 1). In the conventional sheet package (Comparative Example 2), the side surface of the packaging bag is expanded so as to be flush with the upper surface of the packaging bag. It is a figure which expanded the side surface of the packaging bag and made it flush with the upper surface of the packaging bag in the sheet package body (reference example 1) which referred to this embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in this specification, the scale of each member in each figure may be different from the actual scale for easy understanding. Further, in the description shown below, the parts common to each figure may be designated by the same reference numerals and the description thereof may be omitted.

In the present specification, one of the vertical direction (height direction) of the sheet package may be referred to as upper or upper, and the other may be referred to as lower or lower. Further, a three-dimensional Cartesian coordinate system in the three-axis direction (X-axis direction, Y-axis direction, Z-axis direction) is used. Further, the width direction of the sheet package (horizontal direction or horizontal direction orthogonal to the vertical direction) is the X direction, and the depth direction of the sheet package (direction perpendicular to the horizontal direction) is the Y direction. The height direction (vertical direction) is the Z direction.

FIG. 1 is a diagram showing a sheet package 100 according to an embodiment (first embodiment) of the present invention. FIG. 2 is a diagram showing an example of a sheet roll housed in a packaging bag in the first embodiment of FIG. FIG. 3 is a view showing the side surface of the packaging bag expanded and flush with the upper surface of the packaging bag in the sheet packaging body according to the first embodiment.

In FIG. 1, the sheet package 100 is configured such that the sheet roll SR is housed in the packaging bag FB. Also. The packaging bag FB includes a main body portion 10, a handle portion 20, and a finger hook portion 30. The packaging bag FB is manufactured from a resin film or the like using a bag making machine. The sheet package 100 is an example of the sheet package of the present invention. Further, the packaging bag FB is an example of a packaging bag for accommodating a sheet roll in the sheet packaging body according to the present invention, and the sheet roll SR is an example of a sheet roll accommodated in the packaging bag.

As shown in FIGS. 1 and 2, the main body portion 10 of the packaging bag FB constitutes the main body portion of the sheet packaging body 100 in which a plurality of sheet roll SRs are accommodated. The main body 10 is composed of a tubular film in which a resin film is formed in a tubular shape, and the tubular film has a structure formed in a bag shape folded into a gusset shape (FIGS. 1 and 1). 3).

The material of the tubular film (resin film) forming the main body 10 is arbitrary. As such a resin film, for example, a resin film such as polyethylene (PE), a laminate of PE-ethylene vinyl alcohol copolymer (EVOH) -PE (PE / EVOH / PE) can be used. The thickness of the resin film is arbitrary. For example, when PE or PE / EVOH / PE is used as the resin film, the thickness of the resin film can be 10 to 70 μm, preferably 15 to 60 μm, and more preferably 20 to 50 μm.

The main body 10 of the packaging bag FB has an upper surface 11, a lower surface 12, a pair of first side surfaces 13 (one side surface 13a, the other side surface 13b), and a pair of second side surfaces 14 (one side surface 14a, the other side surface 14b). ).

The upper surface 11 is formed on the upper side of the main body 10. The lower surface 12 is formed on the lower side of the main body 10 and faces the upper surface 11 in the Z direction (vertical direction or height direction of the sheet package 100). The pair of first side surfaces 13 are arranged between the upper surface 11 and the lower surface 12 and face each other in the Y direction (the depth direction of the sheet package 100). The pair of second side surfaces 14 are arranged between the upper surface 11 and the lower surface 12 and face each other in the X direction (the width direction of the sheet package 100 or the left-right direction orthogonal to the vertical direction).

The upper surface 11 is an example of the upper surface of the packaging bag in the sheet package according to the present invention, and the lower surface 12 is an example of the lower surface of the packaging bag, and the pair of first side surfaces 13 and / or the pair of second surfaces. The side surface 14 is an example of the side surface of the packaging bag.

As shown in FIGS. 1 and 3, a handle portion 20 is provided on the upper surface 11 of the main body portion 10 of the packaging bag FB. The handle portion 20 constitutes a portion for gripping the sheet package 100 with a hand or a finger (hereinafter referred to as a finger). The handle portion 20 can be formed of a resin film or the like, similarly to the main body portion 10. The handle portion 20 is integrally formed with the main body portion 10 at the connection portion 11a on the upper surface 11 by a seal portion (not shown) formed by heat fusion (heat sealing).

The heat fusion (heat seal) for forming the seal portion is performed by, for example, a method (stamp method) in which the resin film folded into the above-mentioned gusset shape is embossed with a heat plate for handle molding. be able to. Further, in the handle portion 20, air communicating the main body portion 10 and the outside of the sheet package 100 so that the main body portion 10 to which the handle portion 20 is attached does not explode during the manufacturing or distribution of the sheet package 100. A hole (not shown) may be provided.

The handle portion 20 is further provided with a finger hook portion 30 for hooking a finger when gripping the handle portion 20. The finger hook portion 30 is formed at the center of the handle portion 20 in the longitudinal direction (X direction). Further, the finger hook portion 30 is formed by two elliptical slits arranged at predetermined intervals in the longitudinal direction (X direction). The form of the slit is arbitrary, and for example, it can be formed at a perforation, and a finger hook can be formed by breaking the perforation.

The shape of the finger hook portion 30 is not limited to an elliptical shape, but may be a linear shape, a curved shape, a circular shape, an elliptical shape, a quadrangular shape, or a shape similar thereto. Further, although the finger hook portion 30 is formed by two slits, the number of slits is not limited. Therefore, the finger hook portion 30 may be formed by one or three or more slits.

Further, the finger hook portion 30 can be arranged on the handle portion 20 surrounded by a heat seal (not shown). The heat seal can be formed by heat fusion in the same manner as the formation of the handle portion 20. The finger hook portion 30 can be arranged inside the heat seal and away from the heat seal.

Further, the handle portion 20 may be provided with a reinforcing film (not shown) for reinforcing the portion of the handle portion 20 where the finger hook portion 30 is provided. The mode of such a reinforcing film is arbitrary, but it is preferable that the reinforcing film is attached to the handle portion 20 by heat fusion (heat sealing) as in the formation of the handle portion 20. Further, the reinforcing film can be formed of a strip-shaped resin film. The material of the reinforcing film may be the same as or different from the material of the resin film constituting the handle portion 20. The thickness dimension of the reinforcing film is arbitrary, and is preferably 20 μm or more, for example, from the viewpoint of preventing the handle portion 20 from stretching or breaking.

In the sheet package 100 according to the first embodiment, as shown in FIGS. 1 to 3, a sheet roll SR in which the sheet ST is wound in the circumferential direction of the tubular core PT and a packaging bag containing the sheet roll SR are housed. Has FB.

The sheet roll SR is an example of a sheet roll constituting the sheet package of the present invention. Further, the sheet ST is an example of a sheet constituting a part of a sheet roll in the sheet package of the present invention. Further, the tubular core PT is an example of a tubular core that constitutes a part of a sheet roll in the sheet package of the present invention. Further, the packaging bag FB is an example of a packaging bag constituting the sheet packaging body of the present invention.

The dimensions of the sheet roll SR housed in the main body 10 of the packaging bag FB are not particularly limited, but the height (roll width) in the vertical direction in the state of being housed in the sheet package 100 is about 85 mm to 300 mm. Is preferable, and the width (roll diameter) in the lateral direction (X direction) is preferably about 80 mm to 120 mm.

Further, the form of the sheet roll SR is not limited to the roll shape as long as it has a tubular core. The use of the sheet roll SR housed in the main body 10 is not particularly limited, and can be used for toilet paper, kitchen paper, tissue paper and the like.

Further, the number of sheet roll SRs is not particularly limited, and may be one or two or more. In the first embodiment, a total of eight roll-shaped toilet papers are stored in a state in which four roll-shaped toilet papers are arranged in one tier and stacked in two tiers (see FIG. 1). However, the arrangement of the sheet roll SR housed in the main body 10 of the packaging bag FB is not limited to this arrangement. For example, four roll-shaped kitchen papers (kitchen rolls) arranged in a single stack, or five or more roll-shaped toilet papers (toilet rolls) arranged in a single stack are placed in the packaging bag FB. It may be housed in the main body 10.

The sheet ST is not particularly limited, but for example, crepe paper constituting sanitary tissue paper can be used. Crepe paper is paper in which fine wrinkles are formed on the surface by hitting a blade called a doctor blade at the outlet of a dryer of a paper machine in the paper making process.

As the crepe paper constituting the sheet ST, paper whose main material is pulp is used as the raw material of the base paper. As the pulp composition, a known composition in sanitary tissue paper such as toilet paper and kitchen paper can be used. For example, the blending ratio of the pulp can be 50% by mass or more, preferably 90% by mass or more, and more preferably 100% by mass.

The pulp composition of crepe paper includes, for example, softwood pulp such as NBKP (softwood kraft pulp) and NUKP (softwood unbleached pulp), and broadleaf tree pulp such as LBKP (softwood kraft pulp) and LUKP (hardwood unbleached pulp). Can be used in an appropriate ratio. The ratio of softwood pulp to hardwood pulp is preferably 20:80 to 80:20.

The basis weight of the crepe paper is not particularly limited, but for example, the basis weight (or rice basis area) measured by JIS P 8124 (1998) can be adopted. For example, the basis weight of the crepe paper constituting the sheet ST is preferably 10.0 to 50.0 g / m ² per ply, and more preferably 12.0 to 40.0 g / m ² .

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

The paper thickness is measured by sufficiently adjusting the humidity of the test piece under the conditions of JIS P 8111 (1998), and then dial thickness gauge (thickness measuring instrument) "PEACOCK G type" (manufactured by Ozaki Seisakusho) under the same conditions. ) Is used to measure in a 2-ply state. Specifically, after confirming that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table and move the memory of the dial thickness gauge to set the zero point. Then, raise the plunger, place the sample on the test table, and read the gauge when the plunger is slowly lowered. At this time, the plunger is only placed. The terminal of the plunger is made of metal so that a circular plane having a diameter of 10 mm hits the paper plane perpendicularly, and the load at the time of measuring the paper thickness is about 70 gf. The paper thickness is an average value obtained by performing the measurement 10 times.

Further, the crepe paper constituting the sheet ST may be embossed in a one-ply state. In such embossing, a convex embossing roll (not shown) is pressed against the crepe paper by a known steel rubber type embossing method to form a convex embossing on one surface of the crepe paper. Further, concave embossing corresponding to convex embossing is formed on the other surface of the crepe paper.

The shape of the top of the convex emboss (or the opening of the concave emboss corresponding to the convex emboss) formed on the crepe paper is not particularly limited, but is, for example, a shape such as a square shape, a triangular shape, or a circular shape in a plan view. Can be. Further, it is preferable that the side surface of the convex emboss is tapered (not shown) from the surface of the crepe paper on which the convex emboss is not formed toward the top of the convex emboss. By providing the convex embossing having such a tapered side surface, the sheet ST is less likely to be crushed in the thickness direction.

The number of plies of the sheet ST is not particularly limited, but may be 1 ply or more, and is preferably 1 ply (single sheet stacking) or 2 plies (double sheet stacking). The shape of the sanitary tissue paper is not particularly limited, but it is preferable that the contour shape of the plane is rectangular, for example. In the first embodiment, the sheet ST is formed of the above-mentioned convex embossed crepe paper with one ply (two sheets stacked).

Specifically, the sheet ST has a laminated structure in which two sheets of crepe paper on which convex embossing is formed are laminated and integrated. The form of such a laminated structure is not particularly limited, and a tip-to-tip type laminated structure, a nested type laminated structure, or the like adopted in the conventional laminated structure of sanitary tissue paper can be adopted.

Further, such a laminated structure can be formed by adhering two sheets of crepe paper with an adhesive. As such an adhesive, a known adhesive used for sanitary tissue paper having a laminated structure can be used. Examples of such an adhesive include cellulose-based adhesives such as polyvinyl alcohol, starch, modified starch, and carboxymethyl cellulose.

The tubular core PT is not particularly limited as long as the sheet ST is wound in the circumferential direction, and for example, a cylindrical core can be used. The material of the tubular core PT is not particularly limited, and paper, resin, or the like can be used. When the sheet ST is a sanitary thin paper such as toilet paper or kitchen paper, it is preferable to use a cylindrical cardboard core (also referred to as a paper tube).

In the first embodiment, as shown in FIGS. 1 to 3, the sheet roll SR has at least one end face EF in the roll width direction (Z direction) facing the upper surface 11 of the main body portion 10 of the packaging bag FB. Further, the tubular core PT has an opening OP through which the edge TE on one end surface EF side of the sheet roll SR opens. A first slit 40 that overlaps with the opening OP of the tubular core PT is formed on the upper surface 11 of the packaging bag FB (main body 10).

The form of the first slit 40 is arbitrary, and can be formed by, for example, a notch such as a perforation. In the present embodiment, the first slit 40 is formed at a perforation, and a notch is formed by breaking the perforation. In the first embodiment, as shown in FIGS. 1 and 3, the perforations forming the first slit 40 are shown by broken lines. The shape of the first slit 40 is not particularly limited, but may have a straight line, a curved line, a triangle, a quadrangle, a circle, or the like.

Further, the perforations of the first embodiment can be formed by any tie and cut. In this embodiment, the tie is preferably 1.0 to 8.0 mm, more preferably 1.5 to 6.0 mm, still more preferably 2.0 to 4.0 mm. The cut is preferably 0.3 to 3.0 mm, more preferably 0.5 to 2.5 mm, and even more preferably 1.0 to 2.0 mm.

Further, in the first embodiment, at least a part of the first slit 40 overlaps with the central portion OC of the opening OP. In the first embodiment, the first slit 40 is arranged on the upper surface 11 so that a part 40a of the first slit 40 overlaps with the central portion OC of the opening OP.

Further, in the first embodiment, the first slit 40 is composed of one linear slit. The form of the linear slit is not particularly limited, but may be linear such as a straight line or a curved line. In the first embodiment, the linear slit is formed in a straight line.

4 to 7 are views showing the usage state of the sheet package 100 according to the first embodiment. Here, the effects of this embodiment will be described with reference to FIGS. 4 to 7. In the first embodiment, as described above, in the sheet package 100, at least one end surface EF of the sheet roll SR in the roll width direction faces the upper surface 11 of the main body portion 10 of the packaging bag FB. Further, the tubular core PT has an opening OP through which the end edge TE of the tubular core PT on the EF side of one end surface of the sheet roll SR opens. Further, a first slit 40 that overlaps with the opening OP is formed on the upper surface 11 of the main body 10 of the packaging bag FB.

In the first embodiment, the first slit 40 formed on the upper surface 11 of the main body 10 of the packaging bag FB overlaps with the opening OP communicating with the space in the tubular core PT. As a result, the portion of the upper surface 11 of the main body 10 of the packaging bag FB where the first slit 40 is formed is likely to bend with respect to the opening OP of the tubular core PT. Therefore, when the first slit 40 is torn by the finger F to open the packaging bag FB, the finger F is easily caught on the first slit 40, and the packaging bag FB is easily opened (see FIGS. 4 and 5).

Further, in the first embodiment, the finger F hung on the first slit 40 is inserted into the space inside the tubular core PT from the opening OP of the tubular core PT, so that the finger F is inserted into the sheet roll SR. There is no direct hit. Therefore, when the finger F is applied to the first slit 40 to break the first slit 40, it is possible to prevent the finger F from hitting the sheet roll SR and damaging the sheet ST (see FIG. 4).

Further, in the first embodiment, by pushing the finger F from the first slit 40 toward the opening OP of the tubular core PT, the first slit 40 is easily torn and the finger F is inside the tubular core PT. Inserted in space. Therefore, in the first embodiment, the packaging bag FB can be opened with a small force.

Further, in the first embodiment, since the packaging bag FB can be opened with a small force, the opening OP dimension of the packaging bag FB can be easily adjusted. Further, since the size of the opening OP of the packaging bag FB can be easily adjusted, the size of the opening OP of the packaging bag FB can be reduced, so that a part of the sheet roll SR is taken out even after the packaging bag FB is opened. The remaining sheet roll SR can be protected from dust (see FIGS. 6 and 7). As described above, the sheet package 100 according to the first embodiment is excellent in openability, take-out property, and storeability after opening.

Further, in the first embodiment, since a part 40a of the first slit 40 overlaps with the central portion OC of the opening OP, the first slit 40 always overlaps with the central portion OC of the opening OP of the tubular core PT. It will be arranged on the upper surface 11 as described above. As a result, in the first embodiment, the finger F is likely to be caught in the first slit 40 when the packaging bag FB is opened, and the first slit 40 is easily torn. Therefore, according to the first embodiment, the openability of the sheet package 100 can be improved.

Further, in the first embodiment, since the first slit 40 is composed of at least one linear slit, the formation of the first slit 40 is easy. Further, in the first embodiment, since the first slit 40 is composed of such a linear slit, at least one end of the first slit 40 is formed with the upper surface 11 of the packaging bag FB (main body portion 10). It can be extended toward the continuous first side surface 13 or second side surface 14 side.

Specifically, as shown in FIGS. 3, 8, and 9, both the end portion 40b or the end portion 40b and the end portion 40c of the first slit 40 are one side surface of the packaging bag FB (main body portion 10). It extends toward the 13a side. As a result, in the first embodiment, after the first slit 40 is broken, the direction in which the packaging bag FB is broken tends to proceed from the upper surface 11 of the main body 10 toward the first side surface 13 (one side surface 13a). Therefore, in the first embodiment, the packaging bag FB can be easily opened from the upper surface 11 of the main body 10 toward the first side surface 13, so that the sheet roll SR can be easily taken out.

FIG. 8 is a view showing the side surface of the embodiment (second embodiment) of the present invention developed and flush with the upper surface of the packaging bag. FIG. 9 is a diagram showing an embodiment (third embodiment) of the present invention. As shown in FIGS. 8 and 9, in the second embodiment and the third embodiment, the first slit 40 has at least two ends 40b and 40c of the linear slits constituting the first slit 40, and the packaging bag. It extends toward the same side surface (one side surface 13a) of the side surfaces (first side surface 13, second side surface 14) of the FB.

Specifically, in the second embodiment, as shown in FIG. 8, the first slit 40 is composed of one U-shaped linear slit. By adopting such a U-shaped linear slit, the first slit 40 extends from a part 40a of the first slit 40 overlapping the central OC of the opening OP of the tubular core PT to the end portion 40b. The direction and the direction extending to the end portion 40c extend toward the same side surface (one side surface 13a) of the packaging bag FB.

Further, in the third embodiment, as shown in FIG. 9, a configuration is adopted in which three linear slits radially extend from a part 40a of the first slit 40 overlapping the central OC of the opening OP. Has been done. According to this configuration, in the third embodiment, the direction extending to the part 40a or the end 40b of the first slit 40, the direction extending to the end 40c, and the direction extending further to the end 40d are different. Of these, the direction extending from the part 40a of the first slit 40 to the end 40b and the direction extending to the end 40c extend toward the same side surface (one side surface 13a) of the packaging bag FB.

As a result, in the second embodiment and the third embodiment, the directions in which the first slit 40 is broken are dispersed in at least two directions, so that the first slit 40 is easily broken. Further, in the second embodiment and the third embodiment, the first slit 40 has the same side surface (one side surface 13a) of the packaging bag FB from the two ends 40b and 40c of the linear slits constituting the first slit 40. By tearing in two directions toward, a fragment corresponding to the opening of the packaging bag FB is formed, and by pinching the fragment, the sheet package can be opened more easily. Therefore, according to the second embodiment and the third embodiment, the openability of the sheet package 100 can be improved.

FIG. 10 is a diagram showing an embodiment (fourth embodiment) of the present invention. In the sheet package 100 of the fourth embodiment, as shown in FIG. 10, the first slit 40 overlaps the opening OP with the base 41, and the sheet is continuous with the base 41 and is close to the edge TE of the tubular core PT. It has an extension portion 42 that overlaps with a partial EP of the end face EF of the roll SR.

In the fourth embodiment, since the base 41 of the first slit 40 overlaps with the opening OP, the packaging bag FB can be opened via the base 41. Further, since the extension portions 42 (42a, 42b) of the first slit 40 overlap with the base portion 41 and partially EP of the end face EF of the sheet roll SR near the end edge TE of the tubular core PT, the base portion 41 After being torn, the packaging bag FB can be further opened via the extension 42 (42a, 42b). As a result, after the first slit 40 is broken, the packaging bag FB can be broken in the direction away from the first slit 40. Therefore, it becomes easier to open the packaging bag FB.

From a different point of view, when the first slit 40 does not completely overlap the inner portion of the opening OP, the base 41 of the first slit 40 becomes a portion overlapping the opening OP, and the extension portion 42 of the first slit 40. Can be a portion that does not overlap with the opening OP (a portion that overlaps with a part EP of the end face EF of the sheet roll SR near the edge TE of the tubular core PT). Therefore, even if the position of the first slit 40 formed on the upper surface 11 of the main body portion 10 of the packaging bag FB is slightly deviated from the opening OP, excellent openability of the packaging bag FB can be maintained.

FIG. 11 is a diagram showing an embodiment (fifth embodiment) of the present invention. Further, FIG. 12 is a diagram showing an embodiment (sixth embodiment) of the present invention. In the fifth embodiment and the sixth embodiment, as shown in FIGS. 11 and 12, the upper surface 11 and the first side surface 13 (one side surface 13a) of the main body portion 10 of the packaging bag FB are continuous with the first slit 40. A second slit 50 (51, 52) extending from the upper surface 11 to the first side surface 13 (one side surface 13a) is formed.

In the fifth embodiment, since the second slit 50 continuous with the first slit 40 is formed on the upper surface 11 and the first side surface 13 (one side surface 13a) of the main body portion 10 of the packaging bag FB, the packaging bag FB Is easy to open toward the second slit 50 after the first slit 40 is broken. Thereby, in the fifth embodiment, the packaging bag FB can be easily opened from the upper surface 11 of the main body portion 10 of the packaging bag FB to the first side surface 13 (one side surface 13a).

Further, in the sixth embodiment, the second slit 50 continuous with the first slit 40 has two second slits 50 (51, 52) continuous with the end 40b and the end 40c of the two linear slits. It is composed of. In the sixth embodiment, since the two second slits 50 (51, 52) are formed on the upper surface 11 and the first side surface 13 (one side surface 13a) of the main body portion 10 of the packaging bag FB, the packaging is performed. The direction in which the bag FB is opened tends to be toward the two second slits 50 (51, 52) after the first slit 40 is broken. Thereby, in the sixth embodiment, the packaging bag FB can be opened more easily from the upper surface 11 of the main body portion 10 of the packaging bag FB to the first side surface 13 (one side surface 13a).

Hereinafter, the present invention will be specifically described with reference to Examples. The examples and comparative examples were evaluated by the following tests.

[Sheet package (test piece)]
As a test body, a sheet package 100 in which the sheet roll SR was housed in the package bag FB was prepared. For the sheet roll SR, eight roll-shaped toilet papers (“Eliere Toilet Tissue 60m Single (147g / roll)” manufactured by Daio Paper Corporation) were used. The dimensions of the toilet paper are such that the height (roll width) in the vertical direction (Z direction) is about 114 mm and the width (roll diameter) in the horizontal direction (X direction) is about 106 mm in the state of being housed in the sheet package 100. Is. As for the eight sheet roll SRs, four sheets arranged in one tier were stacked in two tiers and accommodated. The packaging bag FB was made by folding a polyethylene (PE) film having a thickness of 25 μm into a tubular shape and folding it into a gusset shape by a bag making machine.

[Opening resistance test]
An opening resistance test was performed on the sheet package 100. The test was performed on a slit formed in the packaging bag FB using a flat standard attachment (A-2) and an extension rod (A-6) on a push-pull gauge (manufactured by Imada, model number: Z2-20). The film was pushed in the vertical direction, the numerical value until the film broke was read, and the opening resistance value (kgf) was evaluated. When there was no slit, the film was pushed in from the center of the paper tube until the film broke, and the opening resistance value was evaluated. The test was performed 5 times for each Example / Comparative Example, and the average value was calculated. In Reference Example 1, the sheet roll SR interfered and could not be opened, so that the measurement was impossible (-).

[Openability]
Along the slit formed in the packaging bag FB of the sheet package 100, the ease of opening (openability) when the user opened the package with one hand (when the sheet was opened freely when there was no slit) was evaluated. The test was conducted 5 times for each Example / Comparative Example and evaluated according to the following criteria.
◯: Can be opened with one hand 5 times out of 5 times (good)
×: The package could not be opened with one hand even once out of 5 times (defective)

[Removability]
The ease of taking out (removability) when one roll of the sheet roll SR in the sheet wrapping body 100 was taken out after opening the sheet wrapping body 100 was evaluated. The take-out property was evaluated by scoring the results of tests conducted by 5 users for each Example / Comparative Example and using the average value as follows. It was evaluated as good when the average value was 3.5 or more.
5 points: Very easy to take out 4 points: Easy to take out 3 points: Neither can be said 2 points: Difficult to take out 1 point: Very difficult to take out

[Storability]
After taking out one roll of the sheet roll SR in the opened sheet package 100, it is confirmed whether the sheet roll SR remaining in the sheet package 100 can be wrapped in the package bag FB after opening, and after opening. The storability was evaluated. The test was conducted 5 times for each Example / Comparative Example and evaluated according to the following criteria.
◯: I was able to wrap up 5 times out of 5 times (good)
×: Could not be wrapped at least once out of 5 times (defective)

[Example 1]
The sheet package 100 shown in FIG. 3 was produced. In this sheet package 100, a first slit 40 that overlaps with the opening OP of the tubular core PT is formed on the upper surface 11 of the main body 10 of the packaging bag FB. Further, the first slit 40 is composed of one linear slit, and the shape of the first slit 40 is made linear. The sheet package 100 was evaluated for openability, take-out property, and storability. The results are shown in Table 1.

[Example 2]
The sheet package 100 shown in FIG. 8 was produced. In this sheet package 100, the shape of the first slit 40 is U-shaped, and the direction extending from a part 40a of the first slit 40 to the end 40b and the direction extending to the end 40c are the same side surface (one side). The sheet package 100 was produced and evaluated in the same manner as in Example 1 except that the direction was toward the side surface 13a). The results are shown in Table 1.

[Example 3]
The sheet package 100 shown in FIG. 9 was produced. In this sheet package 100, the shape of the first slit 40 is such that three linear slits radiate from a part 40a of the first slit 40 and end from a part 40a of the first slit 40. The sheet package 100 was produced and evaluated in the same manner as in Example 1 except that the direction extending to the portion 40b, the direction extending to the end portion 40c, and the direction extending to the end portion 40d were different. The results are shown in Table 1.

[Example 4]
The sheet package 100 shown in FIG. 10 was prepared. In this sheet package 100, the first slit 40 overlaps the base 41 that overlaps with the opening OP and a part EP of the end face EF of the sheet roll SR near the edge TE of the tubular core PT that is continuous with the base 41. A sheet package 100 was produced and evaluated in the same manner as in Example 2 except that the extension portions 42 (42a, 42b) (which do not overlap with the opening OP) were provided. The results are shown in Table 1.

[Example 5]
The sheet package 100 shown in FIG. 11 was prepared. In this sheet package 100, the upper surface 11 and the first side surface 13 (one side surface 13a) of the main body 10 of the packaging bag FB are continuously connected to the first slit 40 (end 40b) from the upper surface 11 of the main body 10. A sheet package 100 was produced and evaluated in the same manner as in Example 1 except that the second slit 50 (51, 52) extending to the first side surface 13 (one side surface 13a) was provided. The results are shown in Table 1.

[Example 6]
The sheet package 100 shown in FIG. 12 was prepared. In this sheet package 100, the first slit 40 (end 40b, end 40c) is continuously connected to the upper surface 11 and the first side surface 13 (one side surface 13a) of the main body 10 of the packaging bag FB from the upper surface 11. A sheet package 100 was produced and evaluated in the same manner as in Example 3 except that the second slit 50 (51, 52) extending to the first side surface 13 (one side surface 13a) was provided. The results are shown in Table 1.

[Comparative Example 1]
The sheet package 100 shown in FIG. 13 was prepared. In this sheet package 100, the sheet package 100 was produced and evaluated in the same manner as in Example 1 except that the first slit 40 was not provided. The results are shown in Table 1.

[Comparative Example 2]
The sheet package 100 shown in FIG. 14 was prepared. In this sheet package 100, the implementation is performed except that a linear slit 60 that does not overlap with the opening OP of the tubular core PT is formed on the first side surface 13 (one side surface 13a) of the main body portion 10 of the packaging bag FB. A sheet package 100 was prepared and evaluated in the same manner as in Example 1. The results are shown in Table 1.

[Reference Example 1]
The sheet package 100 shown in FIG. 15 was prepared. In this sheet package 100, a linear slit 60 that does not overlap with the opening OP of the tubular core PT is formed on the first side surface 13 (one side surface 13a) from the upper surface 11 of the main body portion 10 of the packaging bag FB. Made and evaluated a sheet package 100 in the same manner as in Example 1. The results are shown in Table 1.

From Table 1, the sheet package 100 in which the first slit 40 overlapping the opening OP of the tubular core PT is formed on the upper surface 11 of the main body 10 of the package bag FB has an opening resistance value of less than 2.00 kgf. The openability was 〇 (good), the take-out property was 3.5 or more, and the storability was ◯ (good) (Examples 1 to 6).

On the other hand, in the sheet package 100 in which the first slit 40 overlapping the opening OP of the tubular core PT is not provided on the upper surface 11 of the main body 10 of the package bag FB, the opening resistance value is one of them. It was 2,000 kgf or more, the openability was x (defective), the take-out property was less than 3.5, and the storability was poor (x) (Comparative Examples 1, 2 and Reference Example 1). In Reference Example 1, in the opening resistance test, the sheet roll SR interfered and could not be opened (measurement was impossible).

From these results, it was found that by forming the first slit overlapping the opening of the tubular core on the upper surface of the packaging bag, a sheet package having excellent openability, take-out property, and storability can be obtained.

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

100 Sheet package SR Sheet roll EF End face EP Part of end face ST Sheet PT Cylindrical core TE Edge edge OP Opening OC Central part FB Packaging bag 11 Top surface 11a Connection part 12 Bottom surface 13 First side surface 13a One side surface 14 Second Side surface 20 Handle part 30 Finger hook part 40 First slit 40a Part 40b End part 40c End part 40d End part 41 Base part 42, 42a, 42b Extension part 50, 51, 52 Second slit F finger

Claims (6)

A sheet roll with sanitary tissue paper wrapped around the tubular core,
The packaging bag containing the sheet roll and
A sheet package having a handle portion formed on the upper surface of the packaging bag .
In the sheet roll, at least one end face in the roll width direction faces the upper surface of the packaging bag.
The cylindrical core has an opening through which the edge of the sheet roll on one end face side opens.
A first slit overlapping the opening of the tubular core is formed on the upper surface.
A sheet package in which the first slit is formed at a perforation. The sheet package according to claim 1, wherein at least a part of the first slit overlaps with the central portion of the opening. The sheet package according to claim 1 or 2, wherein the first slit is composed of at least one linear slit. The sheet package according to claim 3, wherein at least two ends of the linear slits extend toward the same side surface of the packaging bag. Any of claims 1 to 4, wherein the first slit has a base portion that overlaps with the opening portion, and an extension portion that is continuous with the base portion and overlaps with a part of the end face of the tubular core near the end edge. The sheet package according to item 1. The sheet package according to any one of claims 1 to 5, wherein a second slit extending from the upper surface of the packaging bag to the side surface of the packaging bag is formed continuously with the first slit.

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