JP7084757B2 - Package - Google Patents

Description

The present invention relates to a package in which roll paper such as toilet rolls and kitchen roll paper is film-wrapped, and particularly to a gusset-wrapped package.

A package made by film-wrapping roll paper, which is made by winding a continuous strip of paper such as a toilet roll, has perforations for opening, and the part continuously following the perforations is torn from the perforations. It is designed to be opened.

The perforations in the conventional package are formed in the vertical direction in the closed portion formed by fusion such as the handle portion formed in the upper part of the packaging bag, and the portion following the perforations does not tear smoothly. In some cases, it was torn excessively in an unintended direction, especially in the vertical direction, and the wrapping film was stretched when it was torn. In this case, the storability of the roll paper remaining after taking out a part of the paper is impaired.

Patent No. 5717429 Patent No. 5666810

Therefore, a main object of the present invention is to provide a wrapping body in which a wrapping film containing roll paper is easily opened and the contained roll paper is excellent in storage after opening.

The means for solving the above problems are as follows.

The first means is
A wrapping body in which roll paper having an air core is wrapped in a film.
The package is a gusset package having an upper fusion section and a lower fusion portion and a roll paper is stored between them.
The film has an opening perforation that is dehiscenced by pushing the film into the air core portion from the outside of the package at a position where it can overlap on or near the air core portion that opens on the end face of the roll paper .
The opening perforation has a curved portion along the air core portion.
It is a package characterized by this.

The second means is
It is a package of the first means having a wide-opening perforation connected to the opening perforation.

The third means is
A package in which a plurality of roll papers are lined up adjacent to each other by butt-butting the body surfaces and with the end faces aligned, and the widening perforations connect the perforations for opening on or near the air core of the adjacent roll papers. It is a package of the above-mentioned second means formed as described above.

The fourth means is
The opening perforation is a package of any of the first to third means having a curved portion along the air core portion.

According to the above invention, there is provided a package in which a wrapping film containing roll paper is easily opened and the contained roll paper is excellent in storage after opening.

It is a perspective view of the package which concerns on embodiment of this invention. It is a front view of the package which concerns on embodiment of this invention. It is a side view of the package which concerns on embodiment of this invention. It is a top view of the package which concerns on embodiment of this invention. It is a top view of the package which concerns on other embodiment of this invention. It is a top view of the package which concerns on still another embodiment of this invention. It is a top view of the package which concerns on another embodiment of this invention. It is a top view of the package which concerns on still another Embodiment of this invention. It is a top view of the package which concerns on still another embodiment of this invention.

Next, an embodiment of the package of the present invention will be described in detail with reference to FIGS. 1 to 9.

The package 1 according to the present embodiment is a package 30 in which 12 toilet rolls 30 are wrapped with a film 3 as an object to be packaged 30. The packaged object 30 in the present invention is not limited to the toilet roll 30, but is a roll paper 30 having an air core portion. The package 1 according to the present invention is generally a film package such as kitchen roll paper or toilet roll, and it takes a long time to use the rest after taking out one, and there is a need for storage. Suitable for things.

The air core portion 31 of the roll paper 30 is not limited to that formed by a tube core or a cylindrical body called a paper tube. Even in the case of roll paper called coreless or coreless, the air core portion 31 according to the present invention is provided as long as a substantially cylindrical hollow portion is formed. However, the air core portion 31 formed of a cylindrical body called a tube core or a paper tube is preferable because it is easy to increase the rigidity.

The package 1 according to the present embodiment is a gusset package 1 having an upper fused portion 41 and a lower fused portion 42, and a roll paper 30 is located inside. A handle portion 20 for facilitating the carrying of the package 1 is formed in a portion above the upper fused portion 41. The handle portion 20 may have a known configuration. For example, another fused portion 43 is provided in the portion above the upper fused portion 41, and the upper portion is laminated and integrated to form a sheet shape, and a finger hole 24 or a finger hook for putting a finger or a hand there. Examples thereof include morphology in which cuts and perforations for forming holes are formed. In the illustrated example, the finger hook hole 24 is formed. If the finger hook hole 24 is formed, the package 1 can be easily carried by putting a finger or a hand on it.

In the film packaging of the roll paper 30 in the package 1, the upper fused portion 41 and the handle portion 20 are fused by folding the side portions 2E and 2E of the tubular packaging film inside the bag to flatten the roll paper 30. This can be done by forming a gusset packaging bag, then opening the lower opening, inserting the roll paper 30, and then fusing the lower part to form the lower fusing portion 42 that seals the opening. ..

Further, the package 1 according to the present embodiment is a side surface 11 which is a part of the gusset portion 10 formed by opening the side portions 2E and 2E folded in the flat state in the state where the toilet roll 30 is packaged. , 11 and each surface 12, 13, 14, 15 connected to the side surface 11. Of the surfaces connected to the side surface 11, the surface connected to the upper fused portion 41 is the top surface 12, and the surface connected to the lower fused portion 42 is used as the bottom surface 15. The second surface connected to the top surface 12 and the bottom surface 15 and the gusset portions 11 and 11 is the front surface 13 and the back surface 14. However, the front surface 13 and the back surface 14 are relative to each other, and which surface is the front surface is not limited.

The upper fused portion 41, the lower fused portion 42, and another fused portion 43 are formed by known fusion techniques such as heat fusion and ultrasonic fusion. Preferably, it is by heat fusion.

Regarding the arrangement of the roll papers 30 in the package, the four roll papers 30 are arranged so that the two adjacent roll papers are in contact with each other on the body surface and the end faces 32 of the toilet rolls are substantially flush with each other. It is desirable that the end faces 32 on one side are arranged toward the upper and lower surfaces, or a group of four roll papers arranged in this way are stacked in a plurality of layers vertically (toward the top of the bottom). The illustrated example shows an embodiment in which twelve three-tiered toilet rolls 30 are included. As another preferable arrangement form of the roll paper, there is a form in which eight roll papers in two stages are included. In addition, it is also possible to arrange a group of one-to-two roll papers with face-to-face butt, or a group of one-to-two roll papers with face-to-face butt stacked in the direction of the end face of multiple stages to form four or three rolls in two stages. good. In this case, the opening perforation 21 may be provided so as to sandwich the handle portion 20 of the top surface portion 12.

In the illustrated package 1, the end face 32 of the toilet roll 30 is arranged so as to face the nadir direction, but the end face 32 may be arranged so as to face the front surface, the back surface, or the side surface. However, the package 1 of the roll paper 30 is more stable when it is placed in an arrangement in which the end surface 32 is located on the bottom surface side, and especially when it is placed in the case of a soft roll paper such as a toilet roll. Since it is easy to prevent the roll of the roll from being deformed, it is desirable to arrange the end face 32 toward the top and bottom. In particular, when the handle portion 20 is provided above the upper fused portion 41, it is desirable to arrange the end surface 32 toward the top and bottom.

The package 1 is characterized by pushing the film 3 into the air core from the outside of the package at a position where it can overlap on or near the air core 31 that opens in the end surface 32 of the roll paper 30 of the film 3. The opening perforation 21 to be dehiscenced is formed. Since the opening perforation 21 is for dehiscence by pushing it into the air core portion 31, the perforation is unintentionally excessive and the take-out port is unlikely to become unnecessarily large. Therefore, it is easy to open the package, and it is easy to form an outlet having a size suitable for storage. In the illustrated form, it is formed on the top surface 12, but as described above, the end surface 32 may be on the front surface 13, the back surface 14, or the side surface 11 in the arrangement mode toward the front surface 13, the back surface 14, or the side surface 11. In the gusset package 1, since the gusset portion 10 is fused at the upper fusion portion 41, the top surface 12 may be formed with the gusset portion 10 folded in and the films partially overlapped with each other. Therefore, when the opening perforation 21 is provided on the top surface 12, at least a part of the opening perforation 21 is derived from the outermost portion of the overlapping portion of the film 3, that is, the gusset portion 10. It is desirable that it is in the part that does not. Further, the opening perforations 21 are provided only on the top surface 12 in the illustrated form, but are provided on two surfaces such as the top surface 12 and the bottom surface 15 facing the end surface of the roll paper 30, the front surface 13 and the back surface 14, and each side surface 11. May be good. Further, in the illustrated embodiment, the opening perforations 21 are provided so as to correspond to all the air core portions 31 of the end faces 32 of the four roll papers 30, but to correspond to all the air core portions 31. There is no need to provide it.

Here, the air core portion 31 that opens to the end surface 32 of the roll paper 30 is exposed to the tube core opening exposed to the end surface 32 or the end surface formed with a certain diameter even if it is called coreless. It is a void part. The diameter L1 of the opening of the air core portion 31 is preferably 20 mm or more so that the pushing operation can be performed by an adult finger. Within this range, it is easy to push the film into the air core portion from the outside of the package. The upper limit of the diameter L1 of the air core portion 31 may be determined in consideration of the product diameter of the roll paper 30 and the roll length of the paper required for the product. If it is a toilet roll or kitchen roll paper, it is about 50 mm.

The position where the film 3 can overlap on or near the air core portion 31 of the film 3 cannot be moved by shifting the film 3 on the roll paper because the film 3 is in close contact with the roll paper 30 and has no margin. In such a package 1, it is a portion located at or near the air core portion 31 of the film 3, the film 3 has a certain margin with respect to the roll paper 30, and a specific position of the film 3 is set at the roll paper 30. In the package 1 that can be displaced to a specific position, the package 1 includes a position that can be aligned on the air core portion by such movement of the film 3. The neighborhood is within the range of the end face of the roll paper, preferably the range of 3/4 from the outer edge of the opening of the air core portion to the outer peripheral edge of the end face of the roll paper, particularly the range of 1/2. If it is within this range, it is easy to open. However, since the opening perforation 21 is intended to be opened by pushing in, it is desirable that the opening perforation 21 is opened by pushing in once or several times with a finger. If the film 3 is packaged with an excessive margin with respect to the roll paper 30, the package 1 may not be able to dehiscence the opening perforations 21 at all due to pushing in. Therefore, the roll paper 30 and the film 3 are combined. Make sure there is no excessive room in between. Further, as described above, when the roll paper 30 has an air core portion 31 formed of a tube core and a cylindrical body called a paper tube, the rigidity of the opening edge of the air core portion 31 can be increased, and the push-in can be performed. It is desirable because the force is easily applied to the film 3 with the edge of the paper tube or the like as a fulcrum, and the perforations for opening 21 are easily dehiscenced.

The perforations for opening 21 may be arranged in a ring shape such as a triangle, a quadrangle, a polygon, an ellipse, or a circle, or may be arranged in a fan shape such as a substantially U-shape, a V-shape, or a semicircle. .. Shapes with vertices are easier to dehiscence from the vertices by pushing, but shapes such as ellipses, circles, and semicircles are easier to prevent unintentional dehiscence. Preferably, as shown in the illustrated form, it is desirable to arrange the air core portion 31 so as to have a curved portion along the opening shape. The opening shape of the air core portion 31 on the end surface 32 of the toilet roll is often circular regardless of whether it has a tube core or coreless, and in such a circular shape, it is for opening. The perforations 21 are particularly preferably arranged in a circular or fan shape so as to have curved portions along all or part of the circumference of the opening of the air core portion 31. The forms of FIGS. 1, 8 and 9 are arranged in a circle along the circular opening of the tube core, and the forms shown in FIGS. 5, 6 and 7 are arranged in a fan shape (semicircle). Shows. In these cases, it is not necessary that the opening and the curvature match. When arranged so as to have a curved portion along the opening shape of the air core portion 31 in this way, a force is easily applied to the opening perforation 21 with the opening edge of the air core portion 31 as a fulcrum at the time of pushing, and the opening perforation 21 is easily applied. Is more likely to be dehiscenced. Further, as described above, particularly having a tube core makes it easier for the opening perforation 21 to dehiscence. Preferably, it is preferably formed to be 2 to 20 mm larger than the diameter L1 of the opening of the air core portion 31. For soft rolls such as toilet rolls and packages with some margin between the roll and the film, the position of the opening perforation 21 only moves at the initial stage when the film 3 is pushed into the air core. It may be difficult to apply sufficient force to dehiscence the opening perforations 21 on the film, but if the film is formed in advance in a range larger than the diameter of the opening of the air core portion 31, the edge of the air core portion 31 is formed. It becomes easier to apply force in the vicinity.

On the other hand, it is desirable that the package 1 forms the widened perforations 22 that are connected to the opening perforations 21. By forming the widening perforations 22, the widening perforations 22 are continuously dehiscenced from the portion dehiscenced by pushing in the opening perforations 21, so that the roll paper 30 can be taken out sufficiently. The mouth is more likely to form. As shown in FIGS. 4 and 6, it is desirable that the widened perforations 22 are composed of a pair of perforations separated by a predetermined width L2, but as shown in FIGS. 5 and 9, even one perforation 22 is formed. good. When composed of a pair of perforations, the space between the pair of wide-open perforations can be peeled off in a band shape to form an outlet, and a sufficient outlet for taking out the roll paper 30 can be easily formed. On the other hand, when there is only one widening perforation, it becomes difficult to unintentionally dehiscence due to an impact or the like. In the case of a pair of wide-opening perforations, the spacing between the wide-opening perforations 22 may be appropriately determined according to the strength of the film 3, but the opening perforations 21 are substantially U-shaped, V-shaped, and so on. If it is arranged in a fan shape such as a semicircle, if it is formed so as to be continuous at both ends thereof, it becomes easy to continuously dehisce the perforations from the opening perforation 21 to the widening perforation 22. If the opening perforations 21 are arranged in a ring shape, if they are formed so as to be continuous at two separated vertices or two points on the circumference, the opening perforations 21 are continuously perforated to the widening perforations 22. The dehiscence of the eye becomes easier. In the form shown in FIG. 4, a pair of wide-opening perforations 22 that are continuous at both ends in the radial direction of the circular opening perforations 21 are arranged. In this form, when the opening perforation 21 is dehiscenced by pushing it into the air core portion 31, a fan-shaped pickable free end portion is likely to be formed, and by pinching and pulling that portion, the opening sewing machine is continuously expanded. The eyes 22 are dehiscenced and torn into strips, so that a take-out port for easily taking out the roll paper 30 is easily formed. As shown in FIG. 8, the widened perforations 22 may be formed so that the two perforations intersect.

The length of the wide-open perforation 22 is not necessarily limited, but it is desirable that the length is such that a take-out port having a size sufficient to take out one roll paper 30 can be formed. Specifically, it is desirable that the length is such that the take-out port having a length equal to or larger than the diameter of the roll paper 30 is formed together with the opening perforation 21. In the case of a package 1 in which a plurality of roll papers 30 are adjacent to each other by butt-butting and the end faces are aligned, the opening perforations 22 are on or near the air core portion of the adjacent roll papers 30 for opening. It is desirable that it is formed so as to connect the perforations 21. By doing so, it becomes easy to form an take-out port from either of the opening perforations 21, and a take-out port having a size that makes it easy to take out the roll paper 30 is formed. For example, in the form of FIGS. 1 and 4, the openings of the air core portions 31 of the four toilet rolls 30 are arranged on the top surface side, and the film 3 is particularly provided so as to correspond to each of the air core portions 31. A total of four opening perforations 21 are formed in the outermost part of the top surface, that is, the part other than the gusset portion 10, so as to connect two of the four opening perforations 21. The widened perforations 22 are formed. In the form shown in FIG. 1, the opening perforation 22 is continuously dehiscenced from the opening perforation 21 corresponding to one roll paper 30, and is surrounded by the opening perforation 21 and the opening perforation 22. When the range is peeled off, the width is the separation width of the pair of perforations constituting the widened perforation 22, and the take-out port having a length of about one roll paper diameter is formed, and one roll paper is formed. An outlet that is easy to take out, does not become excessively wide, and is suitable for storage is formed. Further, as shown in FIG. 6, the widened perforation 22 is also formed on the folded portion (the portion shown by 10A in FIG. 3) derived from the gusset portion 10 of the top surface 12 of the film. The opening perforations 21 may be connected by arranging 22A. In this case, an outlet is formed in which the top surface 12 opens like a lid. The arrangement of the widening perforations is not limited to these illustrated forms, and may be arranged so as to connect the opening perforations so as to correspond to all the air cores on the end faces of the four rolls. It is also possible to provide opening perforations corresponding to three air cores of the end faces of the roll and arrange them in a U shape so as to connect the three opening perforations.

The tie-cut ratio in the opening perforation 21 and the widening perforation 22 may be appropriately designed according to the strength of the film and the like. The present invention is not particularly limited. Further, the opening perforations 21 and the widening perforations 22 are formed by a known perforation forming means such as die-cutting on the resin film, the tubular film, and the gusset packaging bag which are the precursors of the package 1. can do. Further, after the roll paper 30 is wrapped in a gusset, the perforations may be provided by a known perforation forming means such as die cutting. For example, when the diameter of the air core portion is 38 to 43 mm and the diameter of the end face is about 101 to 110 mm, the opening perforations are provided in a circular or fan shape as shown in the figure. If so, the perforation for opening should be around the air core, the tie cut ratio should be 1: 3 to 5: 1, and the cut should be 4 to 14 points. It is preferable that the tie cut ratio is 1: 3 to 5: 1 and the cut portion has 4 to 20 points.

The breaking strength of the opening perforation is preferably 0.1 to 1.2 kgf. More preferably, it is 0.1 to 0.5 kgf. Within this range, the perforation for opening can be easily dehiscenced by the strength at the time of carrying and the pushing by the finger of an adult. The breaking strength here is measured using a digital force gauge (model number DPS-20 manufactured by Imada Co., Ltd.) and its equivalent, and the attachment has a tip diameter of 15 mm and a length of 107 mm at the time of measurement. It is a value measured so as to be pushed into the air core portion using. The measured value shall be the average value of 4 places (4 times).

When the tie-cut ratio is in the range of 1: 3 to 5: 1, especially in the opening perforation of the shape shown in FIG. 1, when the tie-cut ratio is in the range of 1: 3 to 5: 1, the breaking strength is 0.1 to 1. It is easy to set the range to 1.2 kgf. When the tie-cut ratio exceeds 5: 1, the perforations are difficult to open and the film is easily broken, so that the breaking strength is likely to be 2.0 kgf or more and it is difficult to open. Further, the roll paper tends to have the above-mentioned breaking strength when the diameter of the end face is 101 to 110 mm and the winding hardness is 50 to 70 m for a single roll. In addition to these, in particular, in the case of the roll paper 30 having a cylindrical body such as a tube core or a paper tube in the air core portion 31, the force is likely to be applied to the film 3 with the edge of the cylindrical body as a fulcrum. It is easy to set it to 0.1 to 0.5 kgf, which is a range of preferable breaking strength.

The film 3 according to the present invention is preferably of a strength that does not require excessive pushing in order to dehiscence the opening perforations 21. In other words, when the film is pushed into the air core from the outside of the package with a finger or the like, it is desirable that the film be strong enough to dehiscence the opening perforations at one time, and the film will stretch too much even if it is pushed many times. It is not desirable to have a strength that does not cause dehiscence. Specific rigidity and softness are design matters, but for this reason, it is desirable that the film 3 has a thickness of 10 to 70 μm. It is difficult for the strength to become excessively high. The melting point is preferably 150 ° C. or lower because it is easy to wrap in a gusset.

As specific examples of the film 3, a polypropylene resin film and a polyethylene resin film are preferable in terms of cost and openability. It should be noted that a film having a lower melting point is preferable in forming an upper fusion zone, a lower fusion zone, and a handle portion described later because the heat fusion treatment can be performed at a low temperature, but if the melting point is excessively low, it is scratched by friction or the like. The practical lower limit is 80 ° C., because there is a high possibility that a hole will be formed or a hole will be formed. Examples of the polyethylene resin film include a linear low density polyethylene film (LLDPE), a low density polyethylene film (LDPE), and a medium density polyethylene film (MDPE). Among them, a linear low density polyethylene film layer (LLDPE) having a density of 0.910 to 0.940 g / cm ³ and a melting point of 110 to 120 ° C. is particularly suitable in terms of heat fusion property and cost. In the case of a low-density polyethylene film (LDPE), if the thickness is 20 to 30 μm, the perforations for opening are likely to have a more suitable breaking strength. Further, when packaging an odorous material such as a scented toilet roll, an ethylene vinyl alcohol copolymer resin film or a polyethylene terephthalate resin film may be used. Further, it is a multi-layered resin film in which a polyethylene resin film or a polypropylene resin film is laminated on one or both sides of an ethylene vinyl alcohol copolymer resin film or a polyethylene terephthalate resin film to improve heat-sealing properties. You may.

In the above-mentioned package 1 according to the present invention, the opening can be easily opened by the opening perforation 21 to form an outlet, and it is easy to form an outlet that is unintentionally large and difficult to tear and suitable for storage. In particular, when the widened perforations 31 are formed, the roll paper 30 can be easily taken out, and a take-out port having a size suitable for storage can be formed more smoothly.

In order to confirm the ease of opening the package according to the present invention, the breaking strength of the opening perforations in Examples and Comparative Examples was measured. As a measuring device, a digital force gauge DPS-20 (manufactured by Imada Co., Ltd.) was used, and measurement was performed using an attachment having a tip diameter of 15 mm and a length of 107 mm, which is an accessory of the digital force gauge DPS-20.

In the measurement, the digital force gauge was pushed in the direction perpendicular to the packaged air core, and the breaking strength when the digital force gauge was pushed in until the perforation or the film was broken was measured.

Examples 1 to 4 form the opening perforations and the widening perforations according to the present invention, and Comparative Example 1 has no perforations.

The package according to each example was a gusset package of four, three-stage, 12-roll toilet rolls having the form shown in FIG. 1, and the perforations were formed on the top surface.

In Examples 1 and 3 to 6 and Comparative Example 1, a toilet roll having a paper tube (Eliere Toilet Single 60 m (paper tube diameter 41 mm) manufactured by Daio Paper Corporation) was packaged, and Example 2 was paper. A coreless toilet roll without a tube (Elver Toilet Single 170m (air core diameter 32mm) manufactured by Daio Paper Corporation) was packaged. The packaging film was 25 μm of polyethylene (LDPE).

The shapes of the opening perforations and the widening perforations are as shown in Table 1 below. Examples 1, Example 2, and Example 5 are the shapes shown in FIG. 1, and Example 3 is shown in FIG. The shape and the fourth embodiment are the shapes in which the widened perforations are unified in the first embodiment. The diameter of the circular portion of the perforation for opening is 45 mm, and the cut tie ratio of the perforation in each example is described in Table 1 below together with the measurement results.

When the breaking strength of each example was measured, the breaking strength of Example was 0.44 to 1.22 kgf, and that of Example 5 was about half that of Comparative Example, although the strength required for breaking was slightly high. In Examples 1 to 5, it was about one-third, and it was confirmed that it could be sufficiently broken by pushing it with a finger.

1 ... Package (gusset package), 2E ... Side of gusset packaging bag, 3 ... Film, 10 (10A) ... Machi, 11 ... Side, 12 ... Top, 13 ... Front, 14 ... Back, 15 ... Bottom surface, 20 ... Handle part, 30 ... Packaged object (roll paper, toilet roll), 31 ... Air core part, 32 ... Toilet roll end face, 21 ... Opening perforation, 22 (22A) ... Wide mouth perforation, 24 ... Finger hole, 41 ... Upper fusion part, 42 ... Lower fusion part, 43 ... Heat fusion part, L1 ... Diameter of opening of air core part, L2 ... Width of widening perforation.

Claims (3)

A wrapping body in which roll paper having an air core is wrapped in a film.
The package is a gusset package having an upper fusion section and a lower fusion portion and a roll paper is stored between them.
The film has an opening perforation that is dehiscenced by pushing the film into the air core portion from the outside of the package at a position where it can overlap on or near the air core portion that opens on the end face of the roll paper .
The opening perforation has a curved portion along the air core portion.
A package characterized by that. The package according to claim 1, which has an opening perforation connected to the opening perforation. A package in which a plurality of roll papers are lined up adjacent to each other by butt-butting the body surface and with the end faces aligned, and the widening perforations connect the perforations for opening on or near the air core of the adjacent roll papers. The packaging body according to claim 2, which is formed in such a manner.

Images