Packaging
A package with a U- or ⊃-shaped core material and wrapped sheet-like materials forms a rigid structure, ensuring stability and preventing collapse, addressing the issue of unstable stacking and retrieval.
Patent Information
- Application Number
- JP2023106576
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-06-29
- Publication Date
- 2026-05-13
- Estimated Expiration
- 2043-06-29
AI Technical Summary
Existing packages for sheet-like materials, such as plastic bags or paper towels, often collapse when stacked or placed with a smaller surface area facing downwards, leading to instability and difficulty in removal.
A package design featuring a core material with a U- or ⊃-shaped cross-section, where sheet-like materials are wrapped around it with ends inside, forming a rigid, unified structure that maintains stability even when placed with a narrow surface area facing down.
The package maintains stability and prevents collapse of the contents, allowing for secure placement and easy retrieval of sheet-like materials even when fewer items remain.
Smart Images
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Abstract
Description
Technical Field
[0005] , ,
[0001] The present invention relates to a package in which one or more sheet-like objects are packaged with a packaging material.
Background Art
[0002] Conventionally, a package from which a sheet-like plastic bag can be taken out one by one has been known, which stores a large number of sheet-like plastic bags inside. (See Patent Documents 1 to 4) <00In contrast, to display a large number of items in the smallest possible area, packages are sometimes stacked vertically. However, stacking packages can cause problems, such as the stacks collapsing when a package is removed from the shelf. Furthermore, if the smaller side of the packaging is forcibly placed on the bottom surface, the packaging cannot be placed stably, leading to problems such as it tipping over or collapsing on the display shelf. These problems that occur on display shelves can also occur in other places where packaged goods are used, such as in a typical home kitchen.
[0006] Furthermore, in the case of packaging made of relatively rigid materials such as cardboard (Patent Document 4), even if the smaller surface area of the packaging is placed on the bottom surface, it can be placed stably. However, the packaging simply stores stacked plastic bags inside, and in particular, when the number of stored plastic bags decreases, the stacked plastic bags inside the packaging collapse, causing the problem of not being able to remove them properly.
[0007] The problems described above are not limited to packaging that contains many sheet-like plastic bags, but can also occur in packaging that contains many sheets of other sheet-like materials, such as paper towels or cooking sheets coated with resin. Furthermore, this can naturally occur even with packaging that contains one or a small number of sheet-like items.
[0008] The present invention aims to provide a package in which a sheet-like material is wrapped in packaging material, thereby reducing the surface area to be placed with a narrow surface facing downwards, while also allowing the package to be placed stably with a narrow surface facing downwards, and preventing the sheet-like material contained inside the packaging material from collapsing. [Means for solving the problem]
[0009] To solve the aforementioned problems, the packaging of the present invention has the following configuration. A package in which one or more sheet-like materials are wrapped in packaging material, It has a core material formed with a roughly U-shaped or ⊃-shaped cross-section, with two surfaces connected by a connecting part. One or more of the sheet-like materials are placed over the core material so as to cover the outside of the connecting portion, and both ends of one or more of the sheet-like materials are placed inside the core material. The outer surfaces of both ends of the sheet-like material come into contact with each other. The folded object to be packaged is then wrapped with the aforementioned packaging material. The packaging is characterized in that the core material is capable of maintaining a substantially U-shaped or ⊃-shaped cross-section solely by itself. [Effects of the Invention]
[0010] The present invention provides a package in which a sheet-like material is wrapped in packaging material, thereby reducing the surface area to be placed on the bottom surface, while also allowing the package to be placed stably even with a narrow surface area as the bottom surface, and preventing the sheet-like material stored inside from collapsing. [Brief explanation of the drawing]
[0011] [Figure 1] This is a perspective view of a food storage bag packaging 1, which is an embodiment of the present invention. [Figure 2] This is a perspective view of a laminated and folded food storage bag 4, which is an embodiment of the present invention. [Figure 3] This figure shows the process for creating a laminated and folded food storage bag 4, which is an embodiment of the present invention. [Modes for carrying out the invention]
[0012] Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same reference numerals in different figures indicate parts with the same function, and redundant explanations in each figure will be omitted as appropriate.
[0013] [Embodiment] Hereinafter, a package 1 will be described by taking as an example a package body 1 in which a laminated folded body 4 (a packaged object), which is a stack of a large number of food storage bags (bag-shaped objects such as polyethylene bags) for storing and preserving foods and the like which are sheet-shaped objects, is packaged with a packaging material 5 (a bag-shaped packaging material such as a polypropylene bag). Note that the sheet-shaped object is not limited to a food storage bag, and may be, for example, a large resin bag such as a garbage bag folded, a paper bag, or a paper sheet-shaped object such as a paper towel or a cooking sheet. Any material may be used as long as it is formed into a sheet shape or can be folded into a sheet shape. Further, the packaging material 5 may be made of resin such as polyethylene or polyvinyl chloride or paper in addition to polypropylene. Further, the packaging material 5 is not limited to a bag shape, and may be a box shape.
[0014] [Overall Configuration] FIG. 1 is a perspective view of a package body 1 of a food storage bag according to an embodiment of the present invention. A laminate 2 of food storage bags formed by folding a large number of food storage bags made of polyethylene bags (plastic bags) into a sheet shape is folded around a core material 3 made of cardboard and formed into a substantially U-shaped cross section so as to be wound around the core material 3, and the folded laminated folded body 4 of food storage bags is packaged with a packaging material 5 made of a polypropylene bag, thereby constituting a package body 1 of food storage bags.
[0015] [Laminated Folded Body] FIG. 2 is a perspective view of a laminated folded body 4 of a food storage bag according to an embodiment of the present invention. The laminated folded body 4 is formed by overlapping a laminate 2 of food storage bags in which a large number of food storage bags are laminated and a core material 3 and folding them so that the core material 3 has a substantially U-shaped cross section. The core material 3 is formed by folding the left and right in the longitudinal direction of a rectangular sheet toward a narrow central portion, and two wide, substantially parallel flat portions 31 (two surfaces) and a connecting portion 32 connecting these two flat portions 31 are formed. The laminate 2 is covered so as to cover the core material 3 from the back of the core material 3, that is, the outer surface of the connecting portion 32, and both ends in the longitudinal direction of the laminate 2 are folded into the interior of the core material 3, that is, the space sandwiched between the two flat portions 31, and is covered on the core material 3 so as to cover all of the outer and inner surfaces of the core material 3 that are bent into a substantially U-shaped cross section. Note that the core material 3 is not limited to being bent into a substantially U-shaped cross section, and may be bent into a substantially ⊃-shaped cross section. Further, the core material 3 is not limited to cardboard, and any sheet-like material having self-standing rigidity such as a thick resin sheet or a large synthetic resin sheet may be used.
[0016] FIG. 3 is a diagram showing the manufacturing process of the laminated folded body 4 of the food storage bag which is an embodiment of the present invention. (a) is a diagram of a state in which the core material 3 is overlapped on the laminate 2 of the food storage bag, (b) is a diagram of a state in which both ends of the laminate 2 are folded onto the core material 3, and (c) is a diagram of a state in which the laminate 2 is folded into a substantially U-shaped cross section together with the core material 3. The laminated folded body 4 is manufactured as follows. As shown in FIG. 3(a), the laminate 2 of the food storage bag and the core material 3 are overlapped with their centers in the longitudinal direction aligned. Then, the side portions 22 are folded toward the central portion 21 so as to sandwich the core material 3 between the central portion 21 overlapped with the core material 3 in the laminate 2 and the side portions 22 protruding outward from both ends in the longitudinal direction of the core material 3 in the laminate 2. The left and right ends of the laminate 2 are generally folded so as to overlap only the two flat portions and not the connecting portion 32 of the core material 3. Next, as shown in FIG. 3(b), the two flat portions 31 are folded in the direction of the connecting portion 32 together with the laminate 2 so that the cross-sectional shape of the core material 3, that is, the shape seen from above in FIG. 3(c), becomes substantially U-shaped. At this time, it is preferable to make a crease in the core material 3 in advance. Then, the laminated folded body 4 having the shape shown in FIG. 3(c) is completed.
[0017] [Packaging body] The laminated folded body 4 created as described above is placed inside a polypropylene bag, which is a packaging material 5, and sealed to complete the package 1 in which the laminated folded body 4 is wrapped in the packaging material 5. As shown in Figure 1, the packaging material 5 has perforations 52 formed at locations corresponding to the connecting portion 32 to create an opening 51 for taking out one food storage bag at a time. The perforations 52 for creating the opening 51 are not limited to locations corresponding to the connecting portion 32, but may also be in other locations, such as in a direction perpendicular to the folding direction of the laminated folded body 4 (the upper part of the packaging material in Figure 1), or in locations corresponding to the corners or flat parts 31 of the packaging material 5, or may even be provided in multiple locations including these locations.
[0018] [Packaging Usage] When the above-described packaging 1 is placed on the mounting surface, it can be placed with the surface perpendicular to the folding direction of the laminated folded body 4 (the direction of the arrows in Figures 3(a) and 3(b)) as the bottom surface. The laminated folding body 4 is constructed such that a core material 3, which is bent to form a roughly U-shape in cross-section, is covered by a connecting portion 32 from the outer surface of the connecting portion 32, and both of its longitudinal ends are folded into the space sandwiched between two flat portions 31. As a result, the entire laminated folding body 4 has become a single, highly rigid, unified structure. With this structure, the laminated folding body 4, and furthermore, the packaged body 1 in which the laminated folding body 4 is housed in the packaging material 5, can maintain a stable posture even when placed upright with the smaller surface area facing downwards. In other words, even if the packaging material 5 is a soft material such as a polypropylene bag, the high rigidity of the laminated folding body 4 allows it to be placed stably even with a small surface area as the bottom.
[0019] This allows the package 1 to be placed on a small surface area. Furthermore, regardless of the rigidity of the packaging material 5, even if the amount of polyethylene bags remaining in the laminated folded body 4 inside the packaging material 5 decreases, the laminated folded body 4 as a whole is a single, rigid structure, so the laminated folded body 4 will not collapse inside the packaging material 5. Thus, when the bag-shaped packaging material 5 is placed with the smaller surface as the base, it is preferable that the base surface be configured to form a flat surface with a predetermined area necessary for stability, so that it can be placed stably. Of course, it is not limited to placing the smaller surface of the packaging material 5 as the bottom; it is also possible to place it with the larger surface as the bottom.
[0020] While embodiments of the present invention have been described in detail above with reference to the drawings, the specific configurations are not limited to these embodiments, and any design changes or other modifications that do not depart from the spirit of the present invention are also included. [Explanation of Symbols]
[0021] 1 package 2 Laminate 21 Central part 22 Lateral part 3 Core material 31 Plane part 32 Connecting part 4-layer folding body 5 Packaging materials 51 Outlet 52 perforations
Claims
1. A package in which one or more sheet-like materials are wrapped in packaging material, It has a core material formed with a roughly U-shaped or ⊃-shaped cross-section, with two surfaces connected by a connecting part. One or more of the sheet-like materials are placed over the core material so as to cover the outside of the connecting portion, and the ends of one or more of the sheet-like materials are folded into the inside of the core material so that the outer surfaces of both ends of the sheet-like materials come into contact with each other. The packaged body is then wrapped with the packaging material. The packaging is characterized in that the core material is capable of maintaining a substantially U-shaped or ⊃-shaped cross-section solely by itself.
2. The packaging according to claim 1, characterized in that the sheet-like material is a bag-like material made into a sheet.
3. The packaging according to claim 2, characterized in that the bag-like object is a bag made of polyethylene.
4. The packaging body according to claim 1, characterized in that perforations for forming an opening for removing the sheet-like material are provided at a location corresponding to the connecting portion of the packaging material.
5. The packaging according to any one of claims 1 to 4, characterized in that one or more of the sheet-like materials are laminated together.
6. The packaging body according to any one of claims 1 to 4, characterized in that the packaging material is a bag-shaped packaging material.