Sheet packaging

Abstract

To provide a sheet package using a paper material.SOLUTION: In a sheet package 100 using a packaging body 120 using a paper material as a main raw material, a paper sheet constituting the packaging body 120 is sandwiched between a first sealing material 131 and a second sealing material 132, and since a cut surface of an opening 12 portion of the packaging body 120 (paper sheet) is covered by the first sealing material 131 and the second sealing material 132 which are attached so as to cover the opening 12 formed in the package 120, moisture of a wet sheet P does not permeate a paper material layer 121 of the paper sheet from the cross-section. In addition, since an impermeable layer consisting of a barrier layer 122 and a sealant layer 123 is provided on the inner surface of the packaging body 120, moisture of the wet sheet P does not permeate the packaging body 120. In this way, the sheet package 100 using paper material is realized.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a sheet packaging for wet wipes. [Background technology]

[0002] Conventionally, a sheet package has been known in which a sheet laminate consisting of a plurality of wet wipes is packaged in a package formed of a resin film (see, for example, Patent Document 1). The package of this sheet package has a take-out opening for taking out the wet wipes, and a sealing lid made of a resin film is provided to open and close the take-out opening. Also known is a sheet packaging body that includes a lid unit made of a resin material, which has a lid base plate attached to the outlet of a packaging body made of a resin film and a lid member rotatably attached to the lid base plate (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-114749 [Patent Document 2] Japanese Patent Application Laid-Open No. 2015-67336 Summary of the Invention [Problem to be solved by the invention]

[0004] Recently, from a sustainability perspective, efforts to reduce the amount of plastic and other resin materials used have been spreading worldwide. Therefore, it is expected that people will be hesitant to use a relatively large lid unit made of a resin material, such as that provided in the sheet packaging body of Patent Document 2, in the future. In addition, it is expected that the demand for sheet packaging materials made of paper rather than resin film will increase. However, in the case of sheet packaging that contains wet wipes, it is surprisingly difficult to prevent the moisture from the wet wipes from seeping into the paper packaging. For example, even if there is technology to make the paper packaging water-resistant by forming a water-repellent layer on it, sheet packaging made of paper material has not yet been put to practical use. Therefore, the present inventors have conducted extensive research and have developed a technology for using a paper material for a sheet package that encases wet wipes.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet packaging using a paper material. [Means for solving the problem]

[0006] In order to solve the above problems, the invention described in claim 1 is as follows: A sheet package in which a sheet laminate in which a plurality of wet wipes are stacked is packaged in a bag-shaped package, The bag-shaped packaging body is formed using a paper material, Of the outer and inner surfaces of the bag-shaped packaging body, at least the inner surface is provided with an impermeable layer, a predetermined opening is formed in the bag-shaped packaging body, a first sealing material is provided on the outer surface of the bag-shaped packaging body so as to cover the opening, and a second sealing material is provided on the inner surface of the bag-shaped packaging body so as to cover the opening; a region where the first seal material and the second seal material are attached around the opening of the packaging body is thicker than other portions of the packaging body; an outlet for removing the wet wipes is formed at a portion where the first sealant and the second sealant are bonded together through the opening, and a cut surface of the opening is covered and protected by the portion where the first sealant and the second sealant are bonded together; the outlet is formed to be smaller than the opening, and an edge of the outlet applies frictional resistance to the wet wipes being pulled out from the outlet; A seal-like lid material that can be repeatedly attached and peeled off multiple times is disposed at a position that covers the outlet.

[0007] The invention described in claim 2 is the sheet packaging body described in claim 1, The first sealant and the second sealant are characterized in that they are made of a transparent material that is optically transparent.

[0008] The invention described in claim 3 is the sheet packaging body described in claim 1 or 2, The cover is characterized in that it is made of a transparent material having optical transparency.

[0009] The invention described in claim 4 is the sheet packaging body according to any one of claims 1 to 3, The lid material is characterized in that it is attached to the first sealing material.

[0010] The invention described in claim 5 is the sheet packaging body according to any one of claims 1 to 4, The device is characterized in that it is configured so that the frictional resistance applied to the wet sheet being pulled out from the outlet can be changed by adjusting the thickness of at least one of the first sealing material and the second sealing material.

[0011] The invention described in claim 6 is the sheet packaging body according to any one of claims 1 to 5, The device is characterized in that it is configured so that the frictional resistance applied to the wet sheet pulled out from the outlet can be changed by adjusting at least one of the materials of the first sealing material and the second sealing material.

[0012] The invention described in claim 7 is the sheet packaging body according to any one of claims 1 to 6, The edge of the outlet is characterized in that the bonded portion of the first sealing material and the second sealing material that was cut to form the outlet remains uncut. [Effects of the Invention]

[0013] According to the present invention, a sheet packaging body using a paper material is obtained. [Brief explanation of the drawings]

[0014] [Figure 1] 1A and 1B are perspective views showing a sheet wrapping body of the present embodiment. [Figure 2] FIG. 2 is a plan view showing the sheet wrapping body of the present embodiment. [Figure 3] 1A is a cross-sectional view showing the sheet packaging body of this embodiment, and FIG. 1C is an enlarged view of the outlet portion of the sheet packaging body, showing the outlet exposed (b) and the outlet blocked (c). [Figure 4] FIG. 10 is a perspective view showing a mode in which the sheet wrapping body is used. [Figure 5] FIG. 10 is a perspective view showing a modified example of the sheet wrapping body. [Figure 6] FIG. 10 is a perspective view showing another embodiment of the sheet wrapping body. [Figure 7] FIG. 10 is a perspective view showing another embodiment of the sheet wrapping body. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the sheet packaging body according to the present invention will be described in detail with reference to the drawings. However, although the embodiments described below have various limitations that are technically preferable for carrying out the present invention, the scope of the present invention is not limited to the following embodiments and illustrated examples. In the following description, the front-to-back direction, left-to-right direction, and up-down direction, as well as the X-axis, Y-axis, and Z-axis, are defined as shown in Fig. 1. That is, in the sheet packaging body 100, the side on which the lid material 110 is disposed is the top, the opposite side is the bottom, the side on which one end seal portion 120a of the sheet packaging body 100 is formed is the right, the side on which the other end seal portion 120a is formed is the left, when the right end seal portion 120a is disposed on the front side, the left-hand side is the front, and the right-hand side is the back, and the axis along the front-to-back direction is the X-axis, the axis along the left-to-right direction is the Y-axis, and the axis along the up-to-down direction is the Z-axis.

[0016] [Sheet packaging] The sheet packaging body 100 of this embodiment is, for example, as shown in Figures 1 to 4, a sheet laminate in which multiple wet wipes P are stacked, packaged in a bag-shaped packaging body 120, and the wet wipes P are contained within the packaging body 120. A seal-like lid material 110 that can be repeatedly attached and peeled off multiple times is attached to the package 120. In the portion where the packaging body 120 is covered with the lid member 110, a take-out opening 13 for taking out the wet wipes P is provided.

[0017] [Wet wipes] The wet wipes P are sheet materials impregnated with chemical solutions, and are, for example, wet tissues, toilet cleaners, antiperspirant sheets, kitchen cleaners, and the like. The sheet material of the wet wipes P is preferably a nonwoven fabric manufactured using predetermined fibers as the fiber material by well-known techniques such as spunlace, air-through, air-laid, point bond, spun bond, needle punch, etc. Examples of the predetermined fiber include cellulose fibers such as rayon, lyocell, Tencel, and cotton, polyolefin fibers such as polyethylene, polypropylene, and polyvinyl alcohol, polyester fibers such as polyethylene terephthalate and polybutylene terephthalate, and polyamide fibers such as nylon. These may be used alone or in combination of two or more. The sheet material of the wet wipes P preferably has a basis weight of 30 to 80 gsm and a size of 100 to 200 mm in the MD direction (the direction in which the paper runs on the paper machine) and 100 to 200 mm in the CD direction (the direction perpendicular to the direction in which the paper runs on the paper machine). The basis weight refers to the basis weight measured in accordance with JIS P 8124:2011. Furthermore, the chemical liquid impregnated into the wet wipe P can be any liquid depending on the intended use of the wet wipe P, but it is preferable to use one containing, for example, purified water, a preservative, a pH adjuster, a surfactant, etc.

[0018] [Packaging] The packaging body 120 is made of a paper material, and is a paper sheet formed into a bag shape. As the paper sheet, for example, as shown in FIGS. 3(b) and 3(c), a paper sheet having a three-layer structure having a paper material layer 121, a barrier layer 122, and a sealant layer 123 can be used. The main part of this paper sheet is a paper material layer 121 made of paper material, and the barrier layer 122 and sealant layer 123 are layers superposed on the paper material layer 121 to provide an impermeable layer, which will be described later. The techniques for laminating the barrier layer 122 and the sealant layer 123 on the paper material layer 121 are well known and will not be described in detail here.

[0019] The paper material layer 121 is a paper material made of, for example, wood pulp or non-wood pulp. Examples of wood pulp include bleached hardwood kraft pulp (LBKP), bleached softwood kraft pulp (NBKP), unbleached hardwood kraft pulp (LUKP), unbleached softwood kraft pulp (NUKP), hardwood sulfite pulp, and softwood sulfite pulp. Examples of non-wood pulp include straw pulp, bamboo pulp, and kenaf pulp. These pulps can be blended in any appropriate ratio. A water-soluble binder is added to the paper material layer 121 to increase its paper strength. This paper material layer 121 is formed to a thickness of, for example, 0.05 mm to 0.1 mm.

[0020] The barrier layer 122 is made of a thin film called a barrier film, for example. Examples of the barrier film include a film in which alumina or silica is inorganically vapor-deposited onto a resin film such as polyethylene terephthalate or nylon as a base material. The barrier layer 122 is formed to a thickness of, for example, 1 μm to 20 μm.

[0021] The sealant layer 123 is made of a thin resin film having heat-sealing properties, such as low-density polyethylene (LDPE) or non-axially oriented polypropylene (CPP). The sealant layer 123 is formed to a thickness of, for example, 10 μm to 40 μm. The packaging body 120 made of such a three-layered paper sheet is made mainly of paper material, with a resin film used as a part of it.

[0022] The bag-shaped packaging body 120 is formed by joining the opposing edges of the paper sheet with the sealant layer 123 of the three-layer paper sheet described above on the inside to form a center seal portion (formed on the underside of the packaging body 120) not shown, and then placing the sheet stack (wet sheets P) inside the cylindrical paper sheet.The openings at both ends of the cylindrical paper sheet are then joined to form two end seal portions 120a, 120a, thereby forming a pillow-shaped packaging body containing the sheet stack (wet sheets P). The inner surface of this bag-shaped packaging body 120 is provided with an impermeable layer made up of a barrier layer 122 and a sealant layer 123 . The size of the packaging body 120 is determined according to the size of the sheet stack to be stored, but it is preferable that the size be such that the packaging body 120 is large enough to store the sheet stack with some room to spare, so that the packaging body 120 does not become unnecessarily large and so that it is not difficult to remove the wet wipes P when in use.

[0023] Furthermore, a predetermined opening 12 is formed on the upper surface of the bag-shaped packaging body 120 . A first seal material 131 is attached to the outer surface of the packaging body 120 so as to cover the opening 12, and a second seal material 132 is attached to the inner surface of the packaging body 120 (see FIGS. 3(a) to (c)). The paper sheet that constitutes the package 120 is sandwiched between the first seal material 131 and the second seal material 132 . In particular, as shown in Figures 3(b) and (c), a first sealing material 131 and a second sealing material 132 are applied to cover the opening 12 formed in the packaging body 120, and cover the cut surface of the opening portion of the paper sheet (packaging body 120) to protect it. A take-out opening 13 for taking out the wet wipes P is formed in the portion where the first seal material 131 and the second seal material 132 are pasted and overlapped through the opening 12 of the packaging body 120. Here, a cut line for forming the access opening 13 is provided at the part inside the opening 12 where the first sealing material 131 and the second sealing material 132 are pasted together and overlap, and when the sheet packaging body 100 starts to be used, and the lid material 110 is peeled off from the packaging body 120, the cut line is cut by the adhesive force of the pressure-sensitive adhesive provided on the back surface of the lid material 110, and the part corresponding to the cut line is cut off, thereby forming the access opening 13.

[0024] The first sealant 131 and the second sealant 132 are sheet-like films each having an adhesive layer on one side thereof. Examples of films that can be used for the sealant include synthetic resin films such as polyethylene, polypropylene, polyethylene terephthalate, polyester, polyamide, and polyvinyl chloride. The thickness of the sheet-like film is preferably 20 μm to 100 μm. In particular, in this embodiment, the first seal material 131 and the second seal material 132 are made of colorless and transparent films having optical transparency, and the adhesive layer is also colorless and transparent. The first sealing material 131 and the second sealing material 132 are attached to the opening portion formed in advance in the paper sheet, and when the paper sheet is formed into a pillow-shaped packaging body, the first sealing material 131 is attached to the outer surface of the packaging body 120 and the second sealing material 132 is attached to the inner surface of the packaging body 120. That is, the first sealing material 131 is attached in advance to the paper material layer 121 of the paper sheet, and the second sealing material 132 is attached in advance to the sealant layer 123 of the paper sheet. Of course, the paper sheet has an opening 12 formed in advance, and a first seal material 131 and a second seal material 132 are attached to the cut-out portion of the opening.

[0025] [Outlet] As described above, the outlet 13 is formed at the portion where the first seal material 131 and the second seal material 132 are pasted together and overlap each other through the opening 12 of the packaging body 120. The outlet 13 is formed to be smaller in size than the opening 12 formed in the packaging body 120 . The outlet 13 of this embodiment is formed to have an oval shape (rugby ball shape). The shape of outlet 13 is not limited to an oval shape, but may be an elliptical shape, a circular shape, a rectangular shape (diamond shape), or the like.

[0026] [Lid material] The lid member 110 is formed from a sheet piece made of the same material as the film for the sealing material, and is disposed so as to be able to open and close and cover the outlet 13 through which the wet wipes P are taken out. This lid member 110 is attached to the first seal member 131 and is disposed in a position that covers the outlet 13. The thickness of the sheet piece that constitutes the lid member 110 is preferably 50 μm to 100 μm. The back surface of this lid material 110 is coated with a pressure-sensitive adhesive such as a polyester, acrylic, or rubber adhesive, and the lid material 110 can be repeatedly adhered and peeled off multiple times, and is attached to the first sealing material 131 so as to cover the outlet 13 in a manner that allows it to be opened and closed freely. Furthermore, one end of the lid member 110 is fixed to the packaging body 120 (first seal member 131), and the other end is provided with a tab 11 that protrudes from the end, with no pressure-sensitive adhesive applied to the underside of the tab 11. Using this tab 11 makes it easy to open and close the lid member 110. The shape of the lid 110 is not particularly limited as long as it can completely cover the outlet 13, and it can be any shape, such as rectangular or elliptical.

[0027] [Effect description] As described above, the sheet wrapping body 100 of this embodiment uses the wrapping body 120 made primarily of paper material. This sheet packaging body 100 can be used by removing the wet wipes P from the outlet 13 exposed by peeling the lid material 110 from the first seal material 131. Also, by adhering the lid material 110 to the first seal material 131 and closing the outlet 13, the wet wipes P stored inside can be prevented from drying out. That is, the sheet wrapping body 100 of this embodiment can be suitably used as a sheet wrapping body 100 using a paper material.

[0028] Furthermore, the sheet packaging body 100, which uses paper material in this manner, can reduce the amount of resin material used by approximately 20 to 40% compared to conventional sheet packaging bodies that use packaging bodies made only from resin material, making it preferable from the perspective of recent sustainability.

[0029] In particular, the paper sheet constituting the packaging body 120 is sandwiched between the first sealing material 131 and the second sealing material 132, and the first sealing material 131 and the second sealing material 132 are attached so as to cover the opening 12 formed in the packaging body 120, thereby covering the cut surface of the opening 12 portion of the packaging body 120 (paper sheet), so that moisture from the wet wipes P does not seep into the paper material layer 121 of the paper sheet from the cross section. Furthermore, since the inner surface of the packaging body 120 is provided with an impermeable layer consisting of the barrier layer 122 and the sealant layer 123, the moisture in the wet wipes P will not penetrate into the packaging body 120. In other words, the packaging body 120 made of paper material will not get wet with the moisture of the wet wipes P, and the packaging body 120 will not get wet and become easily torn.

[0030] For example, even if a water-repellent or water-impermeable layer is formed on the inside of a paper package to make the package water-resistant, moisture from the wet wipes will seep in through the cross section of the package's outlet, causing the paper package to get wet and tear, and so sheet packages using paper materials have not been put to practical use until now. The inventors discovered a technique for sandwiching the opening 12 of a packaging body 120 made of paper material between a first sealing material 131 and a second sealing material 132 and covering the cut surface of the opening, thereby realizing a sheet packaging body 100 made of paper material.

[0031] Furthermore, by attaching the lid material 110 to the first seal material 131 attached to the top surface of the packaging body 120, it is possible to suitably repeat the adhesion and peeling of the lid material 110 multiple times. That is, even in the sheet packaging body 100 made of paper material, the outlet 13 can be opened and closed freely, and the wet wipes P can be conveniently taken out from the outlet 13 for use.

[0032] In addition, the outlet 13 of this sheet packaging body 100 is formed at the part where the first sealing material 131 and the second sealing material 132 are bonded together, so that the wet wipes P pulled out from the outlet 13 rub against the edges of the first sealing material 131 and the second sealing material 132. By applying frictional force from the ends of the first seal material 131 and the second seal material 132 to the wet wipes P being pulled out from the outlet 13, the next wet wipes P pulled out after the wet wipes P being pulled out for use is prevented from being pulled out too far from the outlet 13, thereby enabling the wet wipes P to be taken out smoothly. For this reason, by adjusting the frictional resistance applied to the wet wipes P as they are pulled out from the outlet 13, it is possible to adjust the ease with which the wet wipes P can be taken out.

[0033] Therefore, by adjusting the thickness of at least one of the first seal material 131 and the second seal material 132, it is possible to change the frictional resistance applied to the wet sheet P drawn out from the outlet 13. Specifically, by adjusting the thickness of the sealing material to be thicker, the frictional resistance applied to the wet sheet P can be increased, and by adjusting the thickness of the sealing material to be thinner, the frictional resistance applied to the wet sheet P can be decreased. Furthermore, by changing and adjusting at least one of the materials of the first seal material 131 and the second seal material 132, it is possible to change the frictional resistance applied to the wet sheet P drawn out from the outlet 13. Specifically, by using a harder material for the sealing material, the frictional resistance applied to the wet sheet P can be increased, and by using a softer material for the sealing material, the frictional resistance applied to the wet sheet P can be decreased.

[0034] In addition, the area around the removal opening 13 of this sheet packaging body 100 is made up of a first sealing material 131 and a second sealing material 132 that cover the opening 12 of the packaging body 120, and since the first sealing material 131 and the second sealing material 132 are made of a transparent material that is optically transparent, the inside of the sheet packaging body 100 can be seen from the opening 12 of the packaging body 120. In this way, the colorless and transparent first sealing material 131 and second sealing material 132 are installed at the opening 12 of the packaging body 120, and therefore the inside of the sheet packaging body 100 can be seen from the opening 12 through the first sealing material 131 and the second sealing material 132, making it easy to check the position of the wet wipes P and grab them from the outlet 13, and also to check the remaining amount of wet wipes P.

[0035] Furthermore, the lid member 110 may be made of a transparent material that is light-transmitting, as shown in FIG. If the lid material 110 is formed using a colorless, transparent film that is light-transmitting and the pressure-sensitive adhesive is also colorless and transparent, even when the dispensing opening 13 is blocked by the transparent lid material 110, the inside of the sheet packaging body 100 can be seen from the opening 12 through the lid material 110, the first sealing material 131, and the second sealing material 132, and the remaining amount of wet wipes P can be confirmed. In this way, if the lid material 110, the first sealing material 131, and the second sealing material 132 are formed from transparent materials, even when the lid material 110 is blocking the outlet 13, it is possible to use the opening 12 as a peephole to check the internal condition of the sheet packaging body 100.

[0036] The present invention is not limited to the above embodiment. For example, as shown in FIG. 6, a perforation 13a for forming an outlet 13 may be provided in the portion where the first sealing material 131 and the second sealing material 132 are pasted together and overlap each other inside the opening 12 of the packaging body 120. When the sheet wrapping body 100 is first used, the perforation 13a may be left uncut in a state where the lid material 110 is peeled off from the wrapping body 120 (first sealing material 131). This allows the user to form the outlet 13 by cutting out the part where the sealing material is attached along the perforation 13a, so that, for example, as shown in Figure 7, the entire part where the sealing material is attached can be left on the edge of the outlet 13 without being cut off. By leaving a piece of sealing material on the edge of the outlet 13, the piece can function as an inner lid, further preventing the wet wipes P stored inside the sheet packaging body 100 from drying out. Of course, the outlet 13 may be formed by cutting off the entire portion where the sealing material is attached along the perforation 13a.

[0037] As described above, the sheet wrapping body 100 made of paper material has the effect of reducing the amount of resin material used.

[0038] In the above embodiment, an example has been given in which an impermeable layer consisting of a barrier layer 122 and a sealant layer 123 is provided on the inner surface of the bag-shaped packaging body 120, but the present invention is not limited to this, and the type and material of the layers constituting the impermeable layer are arbitrary, and a water-repellent layer, etc. may also be used. In addition, an impermeable layer may be provided not only on the inner surface of the packaging body 120 but also on the outer surface thereof.

[0039] Furthermore, it goes without saying that other specific detailed structures and the like can be modified as appropriate. [Explanation of symbols]

[0040] 100 sheet packaging 110 Lid material 11 Knob 120 Packaging 12 Aperture 121 Paper material layer 122 Barrier Layer 123 Sealant Layer 131 First sealing material 132 Second sealing material 13 Outlet 13a perforation P Wet Sheet (Sheet Laminate)

Claims

1. A sheet package in which a sheet laminate in which a plurality of wet wipes are stacked is packaged in a bag-shaped package, The bag-shaped packaging body is formed using a paper material, Of the outer and inner surfaces of the bag-shaped packaging body, at least the inner surface is provided with an impermeable layer, a predetermined opening is formed in the bag-shaped packaging body, a first sealing material is provided on the outer surface of the bag-shaped packaging body so as to cover the opening, and a second sealing material is provided on the inner surface of the bag-shaped packaging body so as to cover the opening; a region where the first seal material and the second seal material are attached around the opening of the packaging body is thicker than other portions of the packaging body; an outlet for removing the wet wipes is formed at a portion where the first sealant and the second sealant are bonded together through the opening, and a cut surface of the opening is covered and protected by the portion where the first sealant and the second sealant are bonded together; the outlet is formed to be smaller than the opening, and an edge of the outlet applies frictional resistance to the wet wipes being pulled out from the outlet; The sheet packaging body is characterized in that a seal-like lid material that can be repeatedly adhered and peeled multiple times is disposed at a position that covers the outlet.

2. 2. The sheet packaging body according to claim 1, wherein the first sealant and the second sealant are made of a transparent material having optical transparency.

3. 3. The sheet packaging body according to claim 1, wherein the cover member is made of a transparent material having optical transparency.

4. 4. The sheet packaging body according to claim 1, wherein the lid material is attached to the first sealing material.

5. The sheet packaging body described in any one of claims 1 to 4, characterized in that it is configured so that the frictional resistance applied to the wet wipes pulled out from the outlet can be changed by adjusting the thickness of at least one of the first sealing material and the second sealing material.

6. The sheet packaging body described in any one of claims 1 to 5, characterized in that it is configured so that the frictional resistance applied to the wet sheet pulled out from the outlet can be changed by adjusting at least one of the materials of the first sealing material and the second sealing material.

7. A sheet packaging body as described in any one of claims 1 to 6, characterized in that the bonded portion of the first sealing material and the second sealing material that was cut to form the outlet remains uncut at the edge of the outlet.

Images