JP2021123340A - Sheet package - Google Patents

Abstract

To provide a sheet package which enables easy formation of a take-out port.SOLUTION: A sheet package includes: a packaging bag for storing multiple laminated sheets; and a take-out port which is open on a top surface of the packaging bag. A perforated line, which encloses an area of a part of the top surface so that the take-out port opens when the perforated line is torn, is provided on the top surface. The area is provided with a tab.SELECTED DRAWING: Figure 1

Description

The present invention relates to a sheet package.

As for sanitary thin paper such as tissue paper, carton type sheet wrapping bodies housed in cardboard boxes have become widespread, but in recent years, from the viewpoint of transportation, storage, disposal, environmental load, cost, etc., film-shaped wrapping bags There is an increasing demand for soft-pack type sheet packaging housed in. The soft pack type sheet package is provided with an outlet (opening with a perforation or the like) for taking out the sheet on the top surface of the packaging bag (see, for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2008-183034 JP-A-2018-177364

An object of the present invention is to provide a sheet package in which an outlet can be easily formed.

The first aspect according to the present invention has a packaging bag for accommodating a plurality of laminated sheets and an outlet that opens to the top surface of the packaging bag, and the top surface has the outlet when the top surface is cleaved. A sheet package in which a perforation is provided so as to open a part of the top surface so that an outlet is opened, and a knob is provided in the area.

In the present specification, a part of the top surface means a part in a range less than half of the top surface. The perforation indicates a cleavage line in which cuts and ties (the uncut portion between the two cuts) are alternately arranged, and when the ties are broken, the cuts on both sides become continuous cuts. The knob indicates a portion that can be pinched by a fingertip or the like.

In the first aspect, a knob is provided in a part of the top surface surrounded by the perforation (hereinafter, may be referred to as a perforation area), and when the knob is pinched and pulled, the perforation is opened. However, the outlet can be opened in the portion corresponding to the perforated area on the top surface. Therefore, according to the first aspect, it is possible to provide a sheet package in which an outlet can be easily formed.

A second aspect according to the present invention is a sheet package in which the knob has an adhesive portion that is adhered to the region and a non-adhesive portion that is not adhered to the region. In the second aspect, the knob has an adhesive portion that adheres to the perforation region and a non-adhesive portion that does not adhere to the perforation region, so that the adhesive portion of the knob is fixed to the perforation region and the knob is not adhered. You can pinch the part with your fingertips. Therefore, according to the second aspect, the knob is easy to pinch and pull.

A third aspect according to the present invention is a sheet package in which the knob has an area ratio of the adhesive portion to the non-adhesive portion of 4: 1 to 8: 1. Here, the area ratio indicates the ratio between the area of the bonded portion and the area of the non-bonded portion. In the third aspect, by setting the area ratio of the bonded portion and the non-bonded portion of the knob to such a range, the knob is more easily pinched and pulled more while maintaining the state where the knob is fixed to the perforated area. It will be easier.

A fourth aspect according to the present invention is a sheet package in which a part of the adhesive portion is adhered to the outside of the region. Here, a part of the bonded portion means a portion in a range less than half of the bonded portion. In the fourth aspect, a configuration in which a part of the adhesive portion of the knob is adhered to the outside of the perforation region is allowed, so that when the knob is attached to the packaging bag as a separate member at the time of manufacturing the sheet package, the knob Installation work becomes easy.

Further, in the fourth aspect, since the portion of the adhesive portion more than half is fixed to the perforation region, the sewing machine is in a state where the knob is fixed to the perforation region when the knob is pinched and pulled. The eye is cleaved and part of the adhesive that adheres to the outside of the perforation area is peeled off. Therefore, in the fourth aspect, the outlet can be opened to the top surface even if a part of the bonded portion is bonded to the outside of the perforated region.

A fifth aspect according to the present invention is a sheet package in which the adhesive strength of the adhesive portion is 2N / 25 mm or more and 6N / 25 mm or less. Here, the adhesive strength indicates a peeling resistance value measured by an adhesive strength test method with reference to JIS Z0237.

In the fifth aspect, by providing a knob having an adhesive portion having an adhesive force of 2N / 25 mm or more and 6N / 25 mm or less in the perforated region, the knob is fixed to the perforated region when the knob is pinched and pulled. In the state, the perforations can be cleaved. Thereby, in the fifth aspect, the outlet can be opened with high accuracy.

Further, in the fifth aspect, even when a part of the bonded portion is adhered to the outside of the perforated region, the perforation is cleaved while the knob is adhered inside the perforated region, and the outside of the perforated region is formed. A part of the adhesive portion that adheres to the sewing machine can be peeled off. Thereby, in the fifth aspect, even if a part of the bonded portion is bonded to the outside of the perforated region, the outlet can be opened with high accuracy.

A sixth aspect according to the present invention is a sheet package in which the non-adhesive portion has an arc-shaped free end. Here, the free end means that the edge of the non-adhesive portion is not fixed. In the sixth aspect, since the non-adhesive portion of the knob has an arcuate free end, the knob is more easily pinched and pulled more easily.

A seventh aspect of the invention is that the region has a given length extending in a first direction and a given width extending in a second direction intersecting the first direction. A sheet package in which the knob is provided at at least one end in the first direction.

In the present specification, the first direction indicates a direction along a predetermined direction on the top surface of the packaging bag. The second direction intersecting with the first direction indicates a direction orthogonal to a direction along a predetermined one direction on the top surface of the packaging bag or a direction along a direction intersecting the streaks. The end portion in the first direction of the region refers to one end portion in the first direction of the perforation region.

In the seventh aspect, the contour shape of the perforated region is longitudinal in the first direction by having a given length extending in the first direction and a given width extending in the second direction intersecting the first direction. It has an elongated shape with the second direction being the width direction. Further, since the knob is provided at at least one end of the perforation region in the first direction, the knob can be easily pulled toward the other end along the first direction.

Further, in the seventh aspect, when the knob is pulled toward the other end side along the first direction, the perforation can be cleaved to open an elongated outlet corresponding to the perforation region. .. As a result, it is possible to form an outlet on the top surface where the sheet is less likely to be clogged and the surroundings are less likely to break. Therefore, according to the seventh aspect, a sheet package having excellent take-out property can be obtained.

An eighth aspect according to the present invention is a sheet package in which the width of the region narrows from both ends of the region in the first direction toward the center of the region. Here, the narrowing of the width from both ends in the first direction of the region toward the center means that the width of the perforated region in the second direction widens from the center of the first direction toward both ends. Is shown.

In the eighth aspect, the width of the perforation region is narrowed from both end sides in the first direction toward the center side in this way, so that the knobs provided at the end portions in the longitudinal direction of the perforation region are pinched. When pulled, the perforations are more likely to cleave from the longitudinal end to the center. Thereby, in the eighth aspect, the formation of the outlet becomes easier.

Further, in the eighth aspect, the width of the outlet that opens to the top surface is wider on both end sides than on the center side of the outlet. Therefore, when the sheet is pulled out, the sheet is likely to be clogged and easily broken at both ends of the outlet, so that the sheet is less likely to be clogged and breakage can be suppressed. As a result, in the eighth aspect, a sheet package having more excellent take-out property can be obtained.

A ninth aspect according to the present invention is a sheet package in which the region has an arc shape in which both end edges of the region in the first direction are convex to the outside of the region. Here, the both end edges of the region in the first direction indicate each end edge facing the first direction of the perforation region. Having a convex arc shape means that each edge is curved in a convex shape.

In the ninth aspect, the edges of both ends in the first direction have an arc shape that is convex to the outside of the perforation region, so that when the knob is pinched and pulled, the knob is provided in the longitudinal direction of the perforation region. The edge on the edge side is easily cleaved. In addition, the edge on the end side in the longitudinal direction of the perforated region where the knob is not provided is also likely to be cleaved. This further facilitates the formation of the outlet in the ninth aspect.

Further, in the ninth aspect, both ends of the outlet opening in the top surface in the longitudinal direction can be curved toward the outside of the outlet. Therefore, the rubbing of the sheet is alleviated at both ends of the outlet where the sheet is easily clogged and broken when the sheet is pulled out. As a result, the sheet is less likely to be clogged, and breakage can be suppressed with high accuracy. Therefore, in the ninth aspect, a sheet package having further excellent take-out property can be obtained.

According to one aspect of the present invention, it is possible to provide a sheet package in which an outlet can be easily formed.

It is a figure which shows the sheet package body which concerns on embodiment. It is a figure which looked at the sheet package body of FIG. 1 from above. It is a figure which shows the outlet and the knob in the sheet package of FIG. It is an enlarged view of the knob of FIG. It is the figure which looked at the knob of FIG. 4 in the Z direction. It is the figure which looked at the knob of FIG. 4 in the Y direction. It is a figure which the outlet was opened in the sheet package of FIG. It is a figure which shows the fragment which occurs after the outlet is opened in the sheet package of FIG. It is a figure which shows the conventional sheet package (the outlet which was made up of the linear slits). It is a figure which shows the conventional sheet package (the outlet which was made up of elliptical slits).

Embodiments of the present invention will be described in detail with reference to the drawings. In each figure, common parts may be designated by the same reference numerals and description thereof may be omitted. Further, in each figure, the scale of each member may differ from the actual scale.

In the present specification, a three-dimensional orthogonal coordinate system in three axial directions (X direction, Y direction, Z direction) is used, and the longitudinal direction or the left-right direction (hereinafter referred to as the first direction) of the sheet package is defined as the X direction, which is short. The hand direction or the depth direction (hereinafter referred to as the second direction) is the Y direction, and the height direction or the vertical direction is the Z direction. Further, “upper” indicates the upper side of the top surface of the packaging bag in the height direction (Z direction) of the sheet package.

FIG. 1 is a diagram showing a sheet package according to an embodiment. FIG. 2 is a view of the sheet package of FIG. 1 as viewed from above, and FIG. 3 is a view showing an outlet and a knob in the sheet package of FIG. 4 is an enlarged view of the knob of FIG. 3, FIG. 5 is a view of the knob of FIG. 4 in the Z direction, and FIG. 6 is a view of the knob of FIG. 4 in the Y direction. .. FIG. 7 is a view in which the outlet is opened in the sheet package of FIG. FIG. 8 is a diagram showing fragments generated after the outlet is opened in the sheet package of FIG. 1.

As shown in FIG. 1, the sheet package 100 according to the present embodiment has a packaging bag 10 and an outlet 20. The sheet package 100 is an example of the sheet package according to the present invention. Further, 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.

As shown in FIG. 1, the packaging bag 10 accommodates a plurality of (or a plurality of sets) of laminated sheets S (hereinafter, referred to as sheet laminated body SL). The sheet laminate 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). In the sheet laminate SL, the sheets S can be pulled out one by one (or one set at a time) through the outlet 20 (opening OP) formed in the packaging bag 10 (see FIG. 7).

The form of the sheet laminated body SL is not particularly limited, and for example, each sheet S is alternately laminated in a folded state (so-called pop-up type sheet laminated body SL), or a plurality of sheets (or a plurality of sets). Examples thereof include those in which S is simply laminated, those in which each sheet S is laminated in a folded state, and the like. From the viewpoint of pulling out the sheets S one by one or one set at a time, the form of the sheet laminated body SL is preferably a pop-up type sheet laminated body SL.

The dimensions of the sheet laminate SL are such that the length of the sheet package 100 in the first direction (X direction) is 80 mm or more and 250 mm or less, and the depth direction (Y) orthogonal to the first direction (X direction) of the sheet package 100. The length in the direction) can be 50 mm or more and 130 mm or less, and the height in the height direction (Z direction) can be 10 mm or more and 90 mm or less. Such a sheet laminate can be manufactured, for example, by a rotary type or a multi-stand type interfolder.

The use of the sheet S is not particularly limited, and can be applied to, for example, sanitary tissue paper such as tissue paper, toilet paper, kitchen paper, and paper towel. These hygienic tissue papers also include hygienic tissue papers containing moisturizing ingredients (eg, lotion tissue paper, etc.). The use of the sanitary tissue paper constituting the sheet S is not particularly limited, and can be applied to any of industrial use, household use, and portable use. Among these, the sheet package 100 of the present embodiment is preferably used for household tissue paper.

The number of plies of the sheet S can be 1 ply or more, preferably 1 ply, and more preferably 2 plies (two layers). The shape of the sheet S is not particularly limited, and for example, it is preferable that the shape of the two-ply sheet in a folded state is rectangular in a plan view.

The material of the sheet S is not particularly limited, and for example, a sheet such as paper, non-woven fabric, or cloth can be used, and a paper sheet (hereinafter, referred to as a paper sheet) is preferable. When the sheet S is a paper sheet, a base paper containing pulp as a main raw material is used. As the pulp composition, a known composition in a paper sheet 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.

The pulp composition of the sheet S (paper sheet) is not particularly limited. For example, softwood pulp such as NBKP (softwood kraft pulp) and NUKP (unbleached softwood pulp) and hardwood pulp such as LBKP (hardwood kraft pulp) and LUKP (hardwood unbleached pulp) may be used in an arbitrary ratio. Can be done. The ratio of softwood pulp to hardwood pulp is not limited, but is preferably 10:90 to 80:20, and more preferably the ratio of softwood pulp to hardwood pulp is higher. Further, used 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, depending on number of plies, in the case of paper 5 g / ^{m 2} or more 80 g / ^{m 2} or less, those of 20 g / ^{m 2} or more 100 g / ^{m 2} or less in the case of non-woven fabric desirable. The basis weight can be measured in accordance with the provisions of JIS P 8124.

The thickness of the sheet S (paper sheet) is not particularly limited, and the paper thickness measured in 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 per 2 plies.

Further, the sheet S (paper sheet) may be embossed. Such embossing can be carried out by a known embossing method.

The packaging mode of the packaging bag 10 is not particularly limited. In the present embodiment, for example, packaging (caramel packaging) in which both ends of a tubular flexible film are folded and sealed (sealed), both ends of a tubular flexible film folded in a gusset shape, or any of them. Use packaging that seals (seals) one end (pillow packaging), packaging that heats a heat-shrinkable resin film to bring it into close contact with the object to be packaged (shrink packaging), or packaging that combines these. be able to.

In this embodiment, the sheet laminate SL is caramel-wrapped. Specifically, the side surfaces 15 and 16 of the packaging bag 10 are folded and sealed. As a result, the seal portion 30 is formed on the side surface 15 of the packaging bag 10, and the seal portion 40 is formed on the side surface 16 (see FIG. 1).

In such caramel packaging, the sheet laminate SL is wrapped with a flexible film so as to be wound into a tubular shape so that both ends in the longitudinal direction (X direction) are opened, and the portion overlapping in the winding direction is fused. Or glue with an adhesive. Fold both ends of the tubular flexible film in the longitudinal direction (X direction) toward both end faces of the sheet laminate SL, and at least the tip edges of the substantially triangular or substantially trapezoidal pieces formed at that time. Each opening of the tubular flexible film is sealed by stacking and adhering by a fusion treatment or an adhesive (see FIG. 1).

The material of the flexible film forming the packaging bag 10 is not particularly limited, and for example, polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC). , Ethylene-vinyl acetate copolymer (EVA), polypropylene (PA) and other resins can be used.

Among these flexible films, polyethylene, polypropylene, polyethylene terephthalate and the like are preferable from the viewpoints of being flexible, excellent in handleability, high sealing property when heat-sealed, and inexpensive. Further, polyethylene is preferable from the viewpoint of being odorless, excellent in water resistance and chemical resistance, and capable of mass production at low cost. As the polyethylene, high-density polyethylene, low-density polyethylene and the like can be used. Further, polypropylene is preferable from the viewpoints of being robust, easy to mold, good color development at the time of printing, and being able to impart gloss.

The form of the flexible film forming the packaging bag 10 is not particularly limited, and is a single-layer film in which the above-mentioned resin is formed in a single layer, a laminate film in which the above-mentioned resin is laminated, or the above-mentioned two or more kinds of resins. It may 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 20 μm or more and 100 μm or less, and more preferably 25 μm or more and 70 μm or less. By setting the thickness of the flexible film to 20 μm or more, it is possible to secure sufficient strength as the packaging bag 10 in which the sheet S is housed. Further, by setting the thickness of the flexible film to 100 μm or less, the flexibility and lightness of the packaging bag 10 can be ensured, and the cost can be suppressed.

The material forming the packaging bag 10 is not limited to the resin material such as the flexible film described above, and a paper material may be used. The materials forming the packaging bag 10 include biodegradable materials (biodegradable plastics, biodegradable paper, etc.) and biomass materials (renewable biological organic resources such as biomass films, excluding fossil resources). ) Can be used.

Further, the packaging bag 10 has a top surface 11, a bottom surface 12, a front surface 13, a back surface 14, a side surface 15, and a side surface 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 surface 15 and the side surface 16 face each other in the left-right direction (X direction). ). The side surface 15 and the side surface 16 are continuous with any of the top surface 11, the bottom surface 12, the front surface 13, and the back surface 14 (see FIG. 1).

The outlet 20 is formed so as to open to the top surface 11 of the packaging bag 10. Specifically, the outlet 20 corresponds to a part region R of the top surface 11, and is the center 11a and the second direction of the top surface 11 of the packaging bag 10 in the first direction (X direction) of the sheet package 100. It is arranged at the center 11b of the top surface 11 of the packaging bag 10 in the (Y direction) (see FIGS. 1 and 2). Here, a part of the top surface 11 indicates a portion (a portion corresponding to the region R) in a range smaller than half of the top surface 11.

In the present embodiment, the top surface 11 is provided with a perforation M that surrounds a part of the region R of the top surface 11, and when the perforation M is cleaved, the outlet 20 opens (FIG. 6). 1 to 1 to 3 and 7). Here, in the perforation M, the cut C and the tie T (the uncut portion between the two cuts C) are alternately arranged, and when the tie T breaks, the cuts C on both sides become continuous cuts for cleavage. The line of sight is shown (see FIGS. 1 to 3).

The region R surrounded by the perforation M (hereinafter, may be referred to as the perforation region R) intersects a given length L2 extending in the first direction (X direction) and the first direction (X direction). It has a given width W2 that extends in the second direction (Y direction).

Here, the first direction (X direction) indicates a direction (longitudinal direction or left-right direction of the sheet package 100) along a predetermined one direction on the top surface 11 of the packaging bag 10. The second direction (Y direction) that intersects the first direction (X direction) is a direction that is orthogonal to a direction along a predetermined one direction on the top surface 11 of the packaging bag 10 or a direction that intersects the streaks. (The lateral direction or the depth direction of the sheet package 100) is shown.

In the first direction (X direction), the dimension of the outlet 20 (the length L2 of the perforation region R) can be arbitrarily determined according to the capacity of the packaging bag 10 and the dimension of the sheet S. For example, the length L2 of the perforation region R can be 100% or less, preferably 5% or more, with respect to the width (length L1) of the top surface 11 of the packaging bag 10 in which the sheet S is housed. 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 dimension of the outlet 20 (width W2 of the perforation region R) can be arbitrarily determined according to the capacity of the packaging bag 10 and the dimension of the sheet S. For example, the width W2 of the perforation region R can be 1% or more and 25% or less, preferably 3% or more and 20% or less, with respect to the vertical width (width W1) of the top surface 11 of the packaging bag 10. More preferably, it is 5% or more and 15% or less (see FIG. 2).

The perforation region R has a base 21 and ends 22 and 23 (see FIGS. 2 and 3). The base portion 21 is a substantially rectangular region or a substantially rectangular region existing between two linear perforations M1 facing the lateral direction (Y direction) of the sheet package 100 and extending substantially parallel to the longitudinal direction (X direction). The range. The perforation M1 constituting the base 21 of the perforation region R is a perforation in which the cut C1 and the tie T1 are alternately arranged (see FIG. 3).

Further, the ends 22 and 23 are continuous with the ends 21A and 21B of the base 21, and are surrounded by the eggplant-shaped perforations M2 and M3 and the ends 21A and 21B of the base 21, respectively. Is. The perforations M2 constituting the ends 22 and 23 of the perforation region R are perforations in which the cut C2 and the tie T2 are alternately arranged (see FIG. 3).

In the second direction (Y direction), the dimension of the outlet 20 (width W3 of the perforation region R) can be arbitrarily determined according to the capacity of the packaging bag 10 and the dimension of the sheet S. For example, the width W3 of the perforation region R can be 5% or more and 35% or less, preferably 10% or more and 30% or less, with respect to the vertical width (width W1) of the top surface 11 of the packaging bag 10. More preferably, it is 15% or more and 25% or less (see FIG. 2).

The width of the base 21 in the second direction (Y direction) corresponds to the width W2 of the perforation region R described above (see FIG. 2). Further, the maximum widths of the ends 22 and 23 in the second direction (Y direction) correspond to the width W3 of the perforation region R (see FIG. 2).

In the perforation M1 constituting the base 21 of the perforation region R, the length of the cut C1 and the length of the tie T1 are arbitrary. The length of each cut C1 can be 0.8 mm or more and 5 mm or less, preferably 1.5 mm or more and 4.5 mm or less, and more preferably 2.5 mm or more and 4 mm or less. The length of each tie T1 can be 0.3 mm or more and 5 mm or less, preferably 0.4 mm or more and 2 mm or less, and more preferably 0.5 mm or more and 1.5 mm or less.

Further, in the perforations M2 forming the ends 22 and 23 of the perforation region R, the length of the cut C2 and the length of the tie T2 are arbitrary. The length of each cut C2 can be 0.8 mm or more and 5 mm or less, preferably 1.5 mm or more and 4.5 mm or less, and more preferably 2.5 mm or more and 4 mm or less. The length of each tie T2 can be 0.3 mm or more and 5 mm or less, preferably 0.4 mm or more and 2 mm or less, and more preferably 0.5 mm or more and 1.5 mm or less.

By having such a shape, the perforation region R has a width W2 narrowed from both end portions 22 and 23 in the first direction (X direction) of the region R toward the center 24 side of the region R. Specifically, the perforation region R has a width W2 in the second direction (Y direction) of the region R widening from the center 24 side in the first direction (X direction) toward both end portions 22 and 23. That is, both end portions 22 and 23 of the perforation region R extend from the width W2 to the width W3 (see FIGS. 1 to 3).

Further, in the present embodiment, the linear perforations M1 constituting the base portion 21 of the perforation region R are the edge edges E1 and E2 of the perforation region R facing the second direction (Y direction). Further, a part of the eggplant-shaped perforations M2 and M3 constituting the end portions 22 and 23 of the perforation region R, respectively, is formed on the edge E3 and E4 of the perforation region R facing the first direction (X direction). Corresponds (see FIG. 3).

In the present embodiment, both end edges E3 and E4 of the perforation region R in the first direction (X direction) have an arc shape that is convex to the outer OR of the region R. Here, having a convex arc shape means that the end edges E3 and E4 are curved in a convex shape. In the present embodiment, a part of the perforations M2 constituting both end edges E3 and E4 of the perforation region R is composed of two arcuate cuts C2, and the two cuts C2 are connected by one tie T2. (See FIG. 3).

The shape of the perforations M2 forming the both end edges E3 and E4 of the perforation region R is not limited to this embodiment. For example, a part of the perforations M2 forming the both end edges E3 and E4 may be composed of three arcuate cuts C2 and two tie T2s connecting two adjacent cuts C2. Further, a part of the perforations M2 constituting the both end edges E3 and E4 may be formed by one cut C2 so that the tie T2 does not exist.

In the sheet package 100 of the present embodiment, the knob 50 is provided in the perforation region R (see FIGS. 1 to 6). Here, the knob 50 indicates a portion that can be pinched by a fingertip or the like. In the present embodiment, the knob 50 is formed as a separate member from the packaging bag 10 (see FIGS. 1 to 6).

The material of the knob 50 is not limited to that of a resin material such as a flexible film (film F shown in FIGS. 4 to 6) used for the above-mentioned packaging bag 10, a paper material, a biodegradable material, a biomass material, and the like. Can be used. The form of the knob 50 is not limited, and the single-layer film, the laminated film, and the mixed film used for the above-mentioned packaging bag 10 can be used. Further, as the thickness of the knob 50, the thickness of the flexible film used for the above-mentioned packaging bag 10 can be adopted.

In the present embodiment, the knob 50 is provided at at least one end of the perforation region R in the first direction (X direction). Here, the end portion of the region R in the first direction (X direction) indicates one end portion (end portion 22 or end portion 23) of the perforation region R in the first direction (X direction). In this embodiment, the knob 50 is provided at the end 23 of the perforation region R. In the present embodiment, a part of the perforations M3 constituting the edge E4 of the perforation region R is entirely covered with the adhesive portion 51.

The knob 50 has an adhesive portion 51 and a non-adhesive portion 52. The adhesive portion 51 is a portion to be adhered to the perforation region R. The non-adhesive portion 52 is a portion that is not adhered to the region R. In the present embodiment, the knob 50 is composed of a substantially rectangular adhesive portion 51 and a bow-shaped non-adhesive portion 52. Specifically, the non-adhesive portion 52 is adjacent to the adhesive portion 51 so that one side of the rectangle constituting the adhesive portion 51 overlaps the bow-shaped chord (a line segment connecting both ends of the arc) forming the non-adhesive portion 52. (See FIGS. 4 and 5).

In the knob 50, the area ratio between the adhesive portion 51 and the non-adhesive portion 52 is not limited, but preferably the area ratio between the adhesive portion 51 and the non-adhesive portion 52 is 4: 1 to 8: 1, more preferably. It is 5: 1 to 7: 1 (see FIG. 5). Here, the area ratio indicates the ratio between the area of the bonded portion 51 and the area of the non-bonded portion 52.

In the present embodiment, the adhesive layer 51A is provided on the side of the adhesive portion 51 facing the perforation region R (the surface of the adhesive portion 51 when viewed in the Z direction) (see FIGS. 5 and 6). The material of the adhesive layer 51A is not particularly limited, but it is preferable that the adhesive force of the adhesive portion 51 is 2N / 25 mm or more and 6N / 25 mm or less. Here, the adhesive strength indicates a peeling resistance value measured by an adhesive strength test method with reference to JIS Z0237.

An adhesive can be used as the material having such adhesive strength. Examples of such an adhesive include adhesives such as rubber-based adhesives, acrylic-based adhesives, silicone-based adhesives, and urethane-based adhesives. Among these, an acrylic pressure-sensitive adhesive is preferable from the viewpoint of less deterioration over time and less discoloration.

It is preferable that these adhesives contain a curing agent. Examples of the curing agent include isocyanate-based curing agents, epoxy-based curing agents, aziricin-based curing agents, metal chelate-based curing agents, carbodiimide-based curing agents, and the like. Among these, an isocyanate-based curing agent used as a curing agent for an acrylic pressure-sensitive adhesive is preferable.

In addition, these adhesives preferably contain a cross-linking agent. Examples of the cross-linking agent include epoxy-based cross-linking agents, isocyanate-based cross-linking agents, amine-based cross-linking agents, melamine-based cross-linking agents, aziridine-based cross-linking agents, aldehyde-based cross-linking agents, metal chelate-based cross-linking agents, acid anhydride-based cross-linking agents, and the like. Can be mentioned. Among these, an epoxy-based cross-linking agent used as a cross-linking agent for an acrylic pressure-sensitive adhesive is preferable.

In the present embodiment, after applying such an adhesive to the entire knob 50 including the non-adhesive portion 52, the portion corresponding to the non-adhesive portion 52 is covered with a film, printing, or the like to cover the adhesive portion 51 with the adhesive layer 51A. Is forming. The mode of forming the adhesive layer 51A on the adhesive portion 51 is not limited to this, and for example, such an adhesive may be applied to the adhesive portion 51 of the knob 50 to form the adhesive layer 51A.

The shape of the non-adhesive portion 52 of the knob 50 is not limited, but it is preferable to have an arc-shaped free end 52A (see FIGS. 1 to 6). Here, the free end 52A indicates that the end edge 52A of the non-adhesive portion 52 is not fixed.

The knob 50 is not limited to the case where the entire adhesive portion 51 is adhered to the inner IR of the region R. That is, a part 51B of the adhesive portion 51 may be adhered to the outer OR of the region R (see FIGS. 1 and 2). Here, the part 51B of the adhesive portion 51 indicates a portion in a range less than half of the adhesive portion 51.

Hereinafter, the effects of this embodiment will be described. In the present embodiment, as described above, the knob 50 is provided in a part of the region (perforation region) R of the top surface 11 surrounded by the perforation M, so that the sewing machine can be pulled by pinching the knob 50. The eye M is cleaved to produce a fragment B to which the knob 50 is attached (see FIGS. 7 and 8).

As a result, as shown in FIG. 7, the outlet 20 opens in the portion of the top surface 11 corresponding to the perforation region R (the opening OP can be formed in the top surface 11 of the packaging bag 10). As described above, according to the present embodiment, the sheet package 100 in which the outlet 20 (opening OP) can be easily formed can be obtained.

In the present embodiment, as described above, the knob 50 has an adhesive portion 51 that adheres to the perforation region R and a non-adhesive portion 52 that does not adhere to the perforation region R, so that the adhesive portion 51 of the knob 50 has a perforation region. While fixed to R (inner IR), the non-adhesive portion 52 of the knob 50 can be pinched with a fingertip. Therefore, according to the present embodiment, the knob 50 is easy to pinch and pull.

In the present embodiment, as described above, the knob 50 is fixed to the perforation region R (inner IR) by adopting the knob 50 in which the area ratio of the bonded portion 51 and the non-bonded portion 52 is within the above range. While maintaining the state, the knob 50 becomes easier to pinch and pull.

In the present embodiment, as described above, the knob 50 is packaged at the time of manufacturing the sheet package 100 by allowing a configuration in which a part 51B of the adhesive portion 51 of the knob 50 is adhered to the outer OR of the perforation region R. When attached to the bag 10 as a separate member, the knob 50 can be easily attached.

Further, in the present embodiment, since the portion of the adhesive portion 51 having a region larger than half is fixed to the perforation region R (inner IR), when the knob 50 is pinched and pulled, the knob 50 becomes the perforation region R. While fixed to (inner IR), the perforation M is cleaved, and a part 51B of the adhesive portion 51 that adheres to the outer OR of the perforation region R is peeled off. Therefore, in the present embodiment, even if a part 51B of the adhesive portion 51 is adhered to the outer OR of the perforation region R, the outlet 20 can be opened to the top surface 11.

In the present embodiment, as described above, the knob 50 having the adhesive portion 51 having an adhesive force of 2N / 25 mm or more and 6N / 25 mm or less is provided in the perforation region R, so that when the knob 50 is pinched and pulled, the knob 50 is pinched. The perforation M can be cleaved with the 50 fixed in the perforation region R (inner IR). Thereby, in the present embodiment, the outlet 20 can be opened with high accuracy.

Further, in the present embodiment, even when a part 51B of the adhesive portion 51 is adhered to the outer OR of the perforation region R, the perforation M is cleaved while the knob 50 is adhered in the inner IR of the perforation region R. Then, a part 51B of the adhesive portion 51 that adheres to the outer OR of the perforation region R can be peeled off. Thereby, in the present embodiment, even if a part 51B (see FIG. 3) of the adhesive portion 51 is adhered to the outer OR of the perforation region R, the outlet 20 can be opened with high accuracy.

In the present embodiment, as described above, since the non-adhesive portion 52 of the knob 50 has the arc-shaped free end 52A, the knob 50 is more easily pinched and pulled more easily.

In the present embodiment, as described above, a given length L2 extending in the first direction (X direction) and a given width extending in the second direction (Y direction) intersecting the first direction (X direction). By having W2, the contour shape of the perforation region R becomes an elongated shape in which the first direction (X direction) is the longitudinal direction and the second direction (Y direction) is the width direction. Further, since the knob 50 is provided at at least one end (end 23) of the perforation region R in the first direction (X direction), the knob 50 is provided along the first direction (X direction). It is easy to pull toward the end (end 22) side of the.

Further, in the present embodiment, when the knob 50 is pulled toward the other end (end 22) along the first direction (X direction), the perforation M is cleaved and corresponds to the perforation region R. The elongated shape outlet 20 can be opened. As a result, it is possible to form an outlet 20 on the top surface 11 in which the sheet S is less likely to be clogged and the periphery is less likely to be broken. Therefore, according to the present embodiment, the sheet package 100 having high accuracy and excellent takeout property can be obtained.

Further, in the present embodiment, the knob 50 is provided at the end portion 23 of the perforation region R so that the adhesive portion 51 covers a part of the perforation M2 constituting the end edge E4 of the perforation region R. Therefore, the cut C2 of the perforation M2 is hard to turn. Therefore, it is possible to prevent the perforations M from being cleaved at the time of manufacturing or selling the sheet package.

In the present embodiment, as described above, the width of the perforation region R is narrowed from both end portions 22 and 23 in the first direction (X direction) toward the center 24 side, so that the perforation region R is in the longitudinal direction. When the knob 50 provided at the end portion 23 of the is pinched and pulled, the perforation M is likely to be cleaved from the end portion 23 in the longitudinal direction toward the center 24. This makes it easier to form the outlet 20 in the present embodiment.

Further, in the present embodiment, the width of the outlet 20 that opens to the top surface 11 is wider on both end portions 22 and 23 than on the central 24 side of the outlet 20. Therefore, when the sheet S is pulled out, the sheet S is less likely to be clogged at both ends 22 and 23 of the outlet 20 which is easily clogged and easily broken, and the breakage can be suppressed. As a result, in the present embodiment, the sheet package 100 having more excellent take-out property can be obtained.

In the present embodiment, as described above, when both end edges E3 and E4 in the first direction (X direction) have an arc shape that is convex to the outer OR of the perforation region R, the knob 50 is pinched and pulled. In addition, the edge E4 on the end portion 23 side in the longitudinal direction of the perforation region R provided with the knob 50 is easily cleaved. Further, the edge E3 on the end 22 side in the longitudinal direction of the perforation region R in which the knob 50 is not provided is also easily cleaved. This further facilitates the formation of the outlet 20 in the present embodiment.

Further, in the present embodiment, both end edges E3 and E4 of the outlet 20 opening to the top surface 11 in the longitudinal direction can be curved toward the outside of the outlet 20. Therefore, the rubbing of the sheet S is alleviated at both ends 22 and 23 of the outlet 20 where the sheet S is easily clogged and easily broken when the sheet S is pulled out. As a result, the sheet S is less likely to be clogged, and breakage can be suppressed with high accuracy. In this way, in the present embodiment, the sheet package 100 having further excellent take-out property can be obtained.

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

[Sheet package (test body)]
As a test body, a sheet package 100 in which a sheet laminate SL in which a plurality of sheets S were laminated was housed in a packaging bag 10 was prepared (see FIGS. 1, 11, and 12). ^{The sheet laminate SL is a tissue paper (basis weight: 12 g / m 2} , paper thickness: 130 μm, number of plies: 2 plies, number of pairs) laminated so that the sheets S can be folded alternately and pulled out one by one in a pop-up manner. : 120 sets (240 sheets), dimensions: height about 40 mm, width about 178 mm, length about 100 mm) were used. The sheet laminate SL was housed in the packaging bag 10 so that the stacking direction (SD direction) was the height direction (Z direction) of the sheet package 100 (see FIGS. 1, 11, and 12). As the material of the packaging bag 10, polyethylene (PE) having a thickness of 60 μm and having a satin-finished surface was used. In the packaging form of the packaging bag 10, both side surfaces 15 and 16 of the sheet packaging body 100 are sealed with caramel packaging (seal portions 30 and 40 are 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). A perforation M was formed on the top surface 11 of the packaging bag 10 so that the outlet 20 opens when the packaging bag 10 is cleaved.

[Openability]
As an openability of the sheet package (test piece), the package bag 10 is opened when the perforation M formed on the top surface 11 of the package bag 10 is cleaved to form the outlet 20 (opening OP). Evaluated the ease. The openability was evaluated according to the following criteria, with ◯ being good and Δ and × being poor.
〇: Smoothly cleaves without putting fingers on the perforations △: Fingers can be put on the perforations but it is difficult to cleave ×: Difficult to put fingers on the perforations and cleaves easily

[Removability]
As a removability of the sheet package (test body), the sheet laminate SL housed in the packaging bag 10 of the sheet package 100 is subjected to the sheet laminate SL through the opened outlet 20 (opening OP) of the packaging bag 10. The ease of taking out the first set of sheets ST was evaluated. The takeability was evaluated according to the following criteria, with ◯ being good and Δ and × being poor.
〇: The first set is easy to pinch △: The first set is pinched ×: The first set is pinched but difficult to pinch

[Sheet tear]
As a sheet tear of the sheet package (test body), the sheet laminate SL housed in the packaging bag 10 of the sheet package 100 is subjected to the sheet laminate SL through the opened outlet 20 (opening OP) of the packaging bag 10. The tearing of the sheets when taking out the first 1st to 5th sheets ST was evaluated. The takeability was evaluated according to the following criteria, with ◯ being good and Δ and × being poor.
〇: The seat was not torn △: The first set of seats was torn ×: Two or more sets of sheets were torn

[Label (test sample)]
As a test sample corresponding to the knob, a label coated with an adhesive (PET film having a thickness of 50 μm) was prepared.

[Adhesive force]
As the adhesive strength of the knob (test sample), the test sample (adjusted to a width of 25 mm and a length of 300 mm) was prepared by the adhesive strength measuring method with reference to JIS Z0237, and the adherend (polyethylene film, stainless plate (SUS), and After sticking to a polyethylene film whose surface has been treated with a satin finish, reciprocally crimping with a 2 kg crimping roller, and after leaving for 20 minutes and 24 hours, a desktop precision universal testing machine (manufactured by Shimadzu Corporation, Autograph AGS-500NG) The resistance value when the pasted test sample was peeled off from the adherend at a speed of 0.3 m / min in the 180 ° direction was measured using the above. The unit of adhesive strength is N / 25 mm. The evaluation was good in the range of 2 to 6 N / 25 mm and defective outside the range.

[Peeling force]
As the peeling force of the knob (test sample), the above-mentioned adhesive force measurement (adhesion is polyethylene film only, the adherend is polyethylene film only) for the test sample (adjusted to width 50 mm and length 300 mm) by the adhesive force measuring method based on JIS Z0237. The resistance value was measured in the same manner as (only after leaving for 20 minutes) to obtain a peeling force (low speed). Similar to the above-mentioned measurement of adhesive strength, after the test sample is attached to the adherend (polyethylene film), the attached test sample is prepared using a high-speed peeling tester (TE-701 manufactured by Tester Sangyo Co., Ltd.). The peeling force (high speed) was obtained by measuring the resistance value when peeling from the adherend at a speed of 60 m / min in the 180 ° direction. The unit of peeling force is mN / 50 mm. The peeling force (low speed) was evaluated as good in the range of 120 to 200 mN / 50 mm and poor in the range outside the range. The peeling force (high speed) was evaluated as good in the range of 450 to 600 mN / 50 mm and poor in the range outside the range.

[Ball tack]
As a ball tack of the knob (test sample), J.I. By the DOW method, a test sample (adjusted to a width of 100 mm and a length of 150 mm) is placed on an inclined surface at an angle of 30 ° so that the surface (adhesive surface) coated with the adhesive faces up, and the diameter is passed through a 100 mm runway. Different steel balls were rolled and the maximum diameter of the steel balls stopped on the adhesive surface was measured. The larger the value, the higher the tack, and the standard size is 1 inch steel ball. It was set to 32. For example, No. If it is 4, it indicates a steel ball having a size of 4/32 inch. The evaluation of ball tack is No. The range of 12 to 15 was considered good, and the range outside the range was considered poor.

[Label peeling]
As the label peeling, it was confirmed whether or not the label was peeled off after the label (test sample) was attached to the adherend (glassine paper) and then left for 20 minutes and 24 hours. The label peeling was evaluated according to the following criteria, with ◯ being good and Δ and × being bad.
〇: Did not peel off △: Peeled off ×: Peeled off before leaving for 20 minutes

[Package film tear]
As the package film was torn, the label was peeled off from the adherend (package film) after the label (test sample) was attached to the adherend (polyethylene whose surface was satin finished) and left for 20 minutes and 24 hours. Occasionally, it was confirmed whether or not the adherend (package film) corresponding to the packaging bag was stretched or torn. The evaluation of the tear of the package film was performed according to the following criteria, and ◯ was good and Δ and × were bad.
〇: No stretch / tear △: Not torn but stretched ×: Torn

[Break of perforations]
As the breakage of the perforation, the breakage of the perforation M when the label was attached to the end portion 23 of the perforation region R of the sheet package 100 and left for 24 hours and then the label was peeled off was evaluated. The perforation breakage was evaluated according to the following criteria, with ◯ being good and Δ and × being poor.
〇: Broken Δ: The perforation was broken, but the outside of the perforation area was also broken ×: Not broken

[Sensory (easy to open, after 24 hours)]
As a sensuality, the label was attached to the end portion 23 of the perforation region R of the sheet package 100 as a knob, and the ease of opening after leaving for 24 hours was evaluated. The evaluation of sensuality was performed according to the following criteria, and 3 or more was good and 2 or less was bad.
5: Very easy to open 4: Easy to open 3: Can be opened 2: Slightly difficult to open 1: Difficult to open

Hereinafter, Examples, Comparative Examples, and Experimental Examples will be described.

[Example 1]
A part of the region R of the top surface 11 of the packaging bag 10 corresponding to the outlet 20 is surrounded by perforations M (perforations M1, M2, M3), and both end portions 22 and 23 of the perforations region R are in the first direction (perforations M1, M2, M3). An arc shape that widens from the center 24 side in the X direction) toward both end portions 22 and 23, and both end edges E3 and E4 in the first direction (X direction) of the perforation area R are convex to the outer OR of the area R. A knob 50 is provided at the end 23 of the perforated region R having a shape (dumbbell type), and a part 51B of the adhesive portion 51 of the knob 50 is adhered to the outer OR of the perforated region R. (See FIGS. 1 to 6), the openability, the removability, and the sheet tear were evaluated. The results are shown in Table 1.

[Comparative Example 1]
The evaluation was performed in the same manner as in Example 1 except that the outlet 20 was formed only by a linear slit (perforation M4) (see FIG. 9). The results are shown in Table 1.

[Comparative Example 2]
The evaluation was performed in the same manner as in Example 1 except that the outlet 20 was formed only by a substantially elliptical slit (perforation M5) (see FIG. 10). The results are shown in Table 1.

[Experimental Example 1]
For test samples coated with an acrylic adhesive (containing 0.3% isocyanate-based curing agent and epoxy-based cross-linking agent) as an adhesive, adhesive strength, peeling power, ball tack, label peeling, package film tearing, and functionality Was evaluated. The results are shown in Table 2. The conditions of Experimental Example 1 correspond to the conditions of the knob 50 in the sheet package 100 (test body) of Example 1.

[Experimental Example 2]
As the adhesive, the evaluation was carried out in the same manner as in Experimental Example 1 except that the content of the isocyanate-based curing agent of the acrylic pressure-sensitive adhesive was 0.5%. The results are shown in Table 1.

[Experimental Example 3]
As the adhesive, the content of the isocyanate-based curing agent of the acrylic pressure-sensitive adhesive was 2.4%, and the evaluation was carried out in the same manner as in Experimental Example 1 except that the isocyanate-based cross-linking agent was used instead of the epoxy-based cross-linking agent. The results are shown in Table 1.

[Experimental Example 4]
As the adhesive, the evaluation was carried out in the same manner as in Experimental Example 3 except that the content of the isocyanate-based curing agent of the acrylic pressure-sensitive adhesive was 3.5%. The results are shown in Table 1.

[Experimental Example 5]
As the adhesive, the evaluation was carried out in the same manner as in Experimental Example 3 except that the content of the isocyanate-based curing agent of the acrylic pressure-sensitive adhesive was 3.9%. The results are shown in Table 1.

From Table 1, both end portions 22 and 23 become wider from the center 24 side in the first direction (X direction) toward both end portions 22 and 23 side, and both end edges E3 and E4 in the first direction (X direction) are regions R. The sheet package 100 provided with the knob 50 at the end 23 of the perforation region R having an arc shape convex to the outer OR of the sheet package 100 was good in opening property, take-out property, and sheet tearing (Example). 1).

On the other hand, the slit (perforation M4) having a linear outlet 20 was poor in openability, take-out property, and sheet tear (Comparative Example 1). Further, the sheet package 100 formed by the substantially elliptical slits (perforations M5) had poor openability (Comparative Example 2).

Further, from Table 2, labels coated with an acrylic pressure-sensitive adhesive (containing 0.3% isocyanate-based curing agent and epoxy-based cross-linking agent) as an adhesive have adhesive strength, peeling power, ball tack, label peeling, and package film. The tearing, the breaking of the perforations, and the functionality were all good (Experimental Example 1).

On the other hand, a label coated with an acrylic pressure-sensitive adhesive (containing 0.5% of an isocyanate-based curing agent and an epoxy-based cross-linking agent) as an adhesive has the label peeled off after 20 minutes, resulting in poor perforation breakage. (Experimental example 2). In addition, acrylic pressure-sensitive adhesive (containing 2.4% isocyanate-based curing agent and isocyanate-based cross-linking agent), acrylic pressure-sensitive adhesive (containing 3.5% isocyanate-based curing agent and isocyanate-based cross-linking agent) and acrylic as adhesives. The label coated with the adhesive (containing 3.9% of isocyanate-based curing agent and isocyanate-based cross-linking agent) had a torn package film after 24 hours and had poor functionality (Experimental Examples 3 to 5).

From these results, a sheet package in which a perforation surrounding a part of the top surface is provided on the top surface of the packaging bag and a knob is provided in the area is provided so that the outlet opens when the package is cleaved. It was found that the formation of the exit was easy. Further, it was found that the sheet package having such a knob having an adhesive portion adhered to the region and a non-adhesive portion not adhered to the region is easy to pinch and pull.

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 modifications can be made within the scope of the invention described in the claims. ..

100 sheet packaging S sheet (sanitary tissue paper)
SL sheet laminate 10 Packaging bag 11 Top surface 11a Center 11b Center 12 Bottom surface 13 Front surface 14 Back surface 15, 16 Side surface 20 Outlet R area IR Inside OR Outside M, M1, M2, M3, M4, M5 Perforations C, C1, C2 Cut T, T1, T2 Tie 21 Base 22, 23 End 24 Center 30 Seal 40 Seal 50 Knob 51 Adhesive 51A Adhesive layer 51B Part 52 Non-adhesive 52A Free end L1, L2 Length W1, W2, W3 Width OP Opening E1, E2, E3, E4 Edge B Fragment

Claims (9)

A packaging bag that accommodates multiple stacked sheets,
It has an outlet that opens to the top surface of the packaging bag.
The top surface is provided with perforations surrounding a part of the top surface so that the outlet opens when the top surface is cleaved.
A sheet package in which a knob is provided in the area. The sheet package according to claim 1, wherein the knob has an adhesive portion that is adhered to the region and a non-adhesive portion that is not adhered to the region. The sheet package according to claim 2, wherein the knob has an area ratio of 4: 1 to 8: 1 between the adhesive portion and the non-adhesive portion. The sheet package according to claim 2 or 3, wherein a part of the adhesive portion is adhered to the outside of the region. The sheet package according to any one of claims 2 to 4, wherein the adhesive strength of the adhesive portion is 2N / 25 mm or more and 6N / 25 mm or less. The sheet package according to any one of claims 2 to 5, wherein the non-adhesive portion has an arc-shaped free end portion. The region has a given length extending in the first direction and a given width extending in a second direction intersecting the first direction.
The sheet package according to any one of claims 1 to 6, wherein the knob is provided at at least one end of the region in the first direction. The sheet package according to claim 7, wherein the width of the region becomes narrower from both ends of the region in the first direction toward the center of the region. The sheet package according to claim 7 or 8, wherein the region has an arc shape in which both end edges of the region in the first direction are convex to the outside of the region.

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