File creation sheet and file
The file creation sheet from a single rectangular sheet with adhesive connections addresses the cracking issue of heat-sealed resin files and waste concerns, enabling waste-free file construction using standard-sized sheets.
Patent Information
- Application Number
- JP2025004171U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-12-02
AI Technical Summary
Existing clear files made from heat-sealed resin sheets are prone to cracking, and there is a demand for paper files and waste-free file construction.
A file creation sheet is designed from a single rectangular sheet with specific portions forming the front, dividers, and back, utilizing valley folds and adhesive connections to avoid heat welding, allowing for paper or resin sheets to be used without waste.
The solution enables the creation of a file without heat welding, preventing cracking and allowing the use of standard-sized sheets without waste, suitable for both paper and resin materials.
Smart Images
Figure 0003254635000001_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to a filing sheet that can store documents and other items individually using dividers, and a file that uses this filing sheet. [Background technology]
[0002] Clear files, which can store documents and other items separately using dividers, are available on the market. These clear files are made by folding a single resin sheet multiple times to create a front cover, a back cover, and a divider between them, and then heating and welding the bottom of the cover together.
[0003] For example, Utility Model Registration No. 3027947 discloses a document file case characterized in that "a flat sheet portion 1 is folded in half two-ply, and the folded flat sheet portion is further folded in half from a direction perpendicular to the folding direction of the folded flat sheet portion to form a four-fold flat sheet portion, and only the folded inner sheet surface of the four-fold flat sheet portion is cut into two along a notch line along the entire length of the folding line, or, without cutting the folded inner sheet surface of the four-fold flat sheet portion, a part of the folded inner sheet portion 1 surface of one of the four-fold flat sheet portions is cut out in the direction of the bottom of the fold to form a connecting piece, and the connecting piece is folded to the outer surface of the folded outer sheet surface in the opposite direction and clamped or adhered."
[0004] In the above-mentioned file case, the flat sheet portion 2 is folded in four to form the four-fold flat sheet portion 14, and then the connecting piece 12 cut and raised from the folded inner sheet portion surface 10a is tightly folded onto the outer surface of the case back surface 9, which is the folded outer sheet portion surface 7b of the small edge, and welded by heat sealing.
[0005] However, although the file case is made by heat sealing, the heat-sealed portion may crack. Also, some users require paper files. Furthermore, there is a demand for files made from a single sheet without waste.
[0006] [Patent Document 1] Utility Model Registration No. 3027947 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]
[0007] The present invention was developed in consideration of the above-mentioned situation, and its objective is to provide a file creation sheet that can be constructed from a single sheet without waste, and a file created using the file creation sheet without heat welding. [Means for solving the problem]
[0008] In order to solve the above-mentioned problems, a file creation sheet according to a first aspect has a first sheet portion that becomes a front side when configured as a file, a second sheet portion that becomes a divider when configured as a file, a third sheet portion that becomes a divider when configured as a file, and a fourth sheet portion that becomes a back side when configured as a file, the first sheet portion having a first spine portion that forms a spine when configured as a file, the second sheet portion having a second spine portion that forms a spine when configured as a file, the third sheet portion having a third spine portion that forms a spine when configured as a file, and the fourth sheet portion having a fourth spine portion that forms a spine when configured as a file, and the first sheet portion has a first lower end portion that forms a bottom end when configured as a file, the third sheet portion having a third lower end portion that forms a bottom end when configured as a file, and the fourth sheet portion having a fourth lower end portion that forms a bottom end when configured as a file. and a fourth lower end portion that forms the lower end when configured as a file, and the first sheet portion has a margin for adhering to the fourth sheet portion when configured as a file, and the first sheet portion, second sheet portion, third sheet portion, fourth sheet portion, and margin for adhering to the fourth sheet portion when configured as a file, are configured as a single rectangular sheet, and connect the first spine portion to the fourth spine portion, connect the second spine portion to the third spine portion, and connect the third lower end portion to the fourth lower end portion, and have a gap portion that is a gap between the margin for adhering to the second sheet portion, and when viewed from the front of the single rectangular sheet, the second sheet portion is positioned below the first sheet portion, and the margin for adhering to the fourth sheet portion beyond the fourth lower end portion when configured as a file.
[0009] In addition, a file creation sheet according to a second aspect is the same as that according to the first aspect, in a front view of a single rectangular sheet, the height of the second sheet portion is smaller than the height of the first sheet portion.
[0010] Furthermore, a file creation sheet according to a third aspect is such that, in the first or second aspect, the first sheet portion has a first edge portion that forms the edge when configured as a file, the second sheet portion has a second edge portion that forms the edge when configured as a file, and the third sheet portion has a third edge portion that forms the edge when configured as a file, and the first edge portion has a first index portion that serves as an index that becomes a heading, the second edge portion has a second index portion that serves as an index that becomes a heading, and the third edge portion has a third index portion that serves as an index that becomes a heading.
[0011] In addition, the file of the fourth aspect uses the file creation sheets of the first and third aspects, makes a valley fold at the connected third lower end and fourth lower end, folds the first sheet portion and fourth sheet portion so that the second sheet portion and third sheet portion overlap, makes a valley fold at the connected first spine portion and fourth spine portion, and the connected second spine portion and third spine portion are each made a valley fold, and the glue tab portion is glued to the fourth sheet portion beyond the fourth lower end. [Effects of the Invention]
[0012] Because the present invention is constructed and operates as described above, it is possible to provide a file creation sheet that can be constructed from a single sheet without waste, and a file that is created using the file creation sheet without heat welding. [Brief explanation of the drawings]
[0013] [Figure 1] 1A is a front view of the file of this embodiment, and FIG. 1B is a back view of the file of this embodiment. [Figure 2] FIG. 10 is a state diagram of a file in an open state according to the present embodiment. [Figure 3] FIG. 1 is a front view of a rectangular sheet and a file creation sheet formed by processing the sheet. [Figure 4] FIG. 10 is a reference perspective view illustrating a state in which a file is created by valley-folding a file creation sheet. [Figure 5] FIG. 10 is a reference perspective view illustrating how the file creation sheet is further valley-folded to create a file. BEST MODE FOR CARRYING OUT THE INVENTION
[0014] This example will be described below with reference to the illustrated embodiment. The file 10 of this example is constructed by processing a single rectangular sheet 100 to create a file creation sheet 200 to be used for creating a file, and then folding the file creation sheet 200 multiple times and gluing it together as described below. It is also possible to print on the sheet 100 in advance, and by printing in this way, it is also possible to identify each sheet portion, as described below.
[0015] The file creation sheet 200 is formed by, for example, punching out a single rectangular sheet 100, and when the file creation sheet 200 is formed into a file 10, it has a first sheet portion 210 that forms the front surface, a second sheet portion 220 that forms a divider, a third sheet portion 230 that also forms a divider, and a fourth sheet portion 240 that forms the back surface.
[0016] Additionally, the first sheet portion 210, which forms the front surface, has an overlap portion 300 that serves as an overlap for attaching to the fourth sheet portion 240, which forms the back surface, as will be described later, when the file creation sheet 200 is configured into the file 10. This overlap portion 300 is disposed inside the file creation sheet 200, as will be described further below.
[0017] The first sheet portion 210, the second sheet portion 220, the third sheet portion 230, and the fourth sheet portion 240 divide the file creation sheet 200 into approximately four sections, but the second sheet portion 220 has a smaller area than the first sheet portion 210, the third sheet portion 230, or the fourth sheet portion 240. This is because the overlap portion 300 in the first sheet portion 210 of the file creation sheet 200 configured as described above is positioned so as to encroach on the second sheet portion 220, so to speak.
[0018] In this embodiment, in a front view of a single rectangular sheet 100, the second sheet portion 220 is disposed below the first sheet portion 210, and the overlap portion 300 is disposed between the first sheet portion 210 and the second sheet portion 220. In this manner, the overlap portion 300 can be disposed inside the file creation sheet 200, i.e., between the first sheet portion 210 and the second sheet portion 220. Furthermore, although not shown, the overlap portion 300 can also be disposed between the third sheet portion 230 and the fourth sheet portion 240. Therefore, the overlap portion 300 does not protrude outward from the file creation sheet 200, and the file creation sheet 200 remains inside the rectangular sheet 100. This allows, for example, when the file 10 is used to store documents of A4 size according to the so-called JIS standard, and the single rectangular sheet 100 is made of paper and has a standard size, the standard size sheet can be used without waste.
[0019] Next, the first sheet section 210, second sheet section 220, third sheet section 230, and fourth sheet section 240 of the file creation sheet 200 will be described. Since the file 10 has a structure similar to that of a book, the names of the parts that make up a book may be used. Note that the fore-edge sections, which will be described later, may be positioned to the right R when viewed from the front (see Figures 1 and 2).
[0020] The first sheet portion 210 has a substantially rectangular shape, and when configured into the file 10, has a first edge portion 211 that forms the so-called edge, a first spine portion 212 that forms the so-called spine, a first upper edge portion 213 that forms the top edge, and a first lower edge portion 214 that forms the bottom edge. The above-mentioned overlap portion 300 is connected to the first lower edge portion 214. The first sheet portion 210 has a first height 215 between the first upper edge portion 213 and the first lower edge portion 214. The substantially rectangular shape is due to the rounded corners.
[0021] Furthermore, a first index portion 211a that serves as a heading is provided in a first edge portion 211 that forms the edge when configured into the file 10. The first index portion 211a is formed by removing a portion of the first edge portion 211. There is also a first width H1 between the first edge portion 211 and the first spine portion 212.
[0022] The second sheet portion 220 is substantially rectangular and, when assembled into the file 10, has a second edge portion 221 that forms the edge, a second spine portion 222 that forms the spine, a second upper edge portion 223 that forms the top edge, and a second lower edge portion 224 that forms the bottom edge. The second sheet portion 220 also has a second height 225 between the second upper edge portion 223 and the second lower edge portion 224. A gap 400 is provided between the overlap portion 300 on the first sheet portion 210 and the second sheet portion 220. In other words, in the file creation sheet 200, the first sheet portion 210 and the second sheet portion 220 are disposed with the gap 400 interposed between them. The substantially rectangular shape is due to the rounded corners.
[0023] Furthermore, a second index portion 221a that serves as a heading is provided in a second edge portion 221 that forms the edge when configured into the file 10. The second index portion 221a is formed by removing a portion of the second edge portion 221. There is also a second width H2 between the second edge portion 221 and the second spine portion 222.
[0024] Third sheet portion 230 is substantially rectangular in shape, and when configured into file 10, has third edge portion 231 that forms the edge, third spine portion 232 that forms the spine, third upper edge portion 233 that forms the top edge, and third lower edge portion 234 that forms the bottom edge. Third sheet portion 230 also has a third height 235 between third upper edge portion 233 and third lower edge portion 234. The reason it is substantially rectangular is because it has rounded corners.
[0025] Furthermore, a third index portion 231a that serves as a heading is provided at a third edge portion 231 that forms the edge when configured into the file 10. The third index portion 231a is formed by removing a portion of the third edge portion 231. There is also a third width H3 between the third edge portion 231 and the third spine portion 232.
[0026] The first index portion 211a, the second index portion 221a, and the third index portion 231a have different heights so that they can be visually recognized when configured as a file 10.
[0027] The fourth sheet portion 240 is substantially rectangular and, when assembled into the file 10, has a fourth edge portion 241 that forms the edge, a fourth spine portion 242 that forms the spine, a fourth upper edge portion 243 that forms the top edge, and a fourth lower edge portion 244 that forms the bottom edge. The fourth sheet portion 240 also has a fourth height 245 between the fourth upper edge portion 243 and the fourth lower edge portion 244. The fourth sheet portion 240 is substantially rectangular because it has rounded corners. The fourth sheet portion 240 also has a fourth width H4 between the fourth edge portion 241 and the fourth spine portion 242.
[0028] As described above, the file creation sheet 200 has a first sheet portion 210, a second sheet portion 220, a third sheet portion 230, and a fourth sheet portion 240. Specifically, the file creation sheet 200 is configured by connecting the first spine 212 in the first sheet portion 210 to the fourth spine 242 in the fourth sheet portion 240, connecting the second spine 222 in the second sheet portion 220 to the third spine 232 in the third sheet portion 230, and connecting the third lower end portion 234 in the third sheet portion 230 to the fourth lower end portion 244 in the fourth sheet portion 240.
[0029] Furthermore, it is preferable that the first width H1 and the fourth width H4 are substantially the same, and it is also preferable that the second width H2 and the third width H3 are substantially the same. In this case, it is preferable that the second width H2 is smaller than the first width H1. Therefore, in the file creation sheet 200, when the fourth edge portion 241 and the third edge portion 231 are arranged in a straight line, the positions of the fourth spine 242 and the third spine 232 are slightly offset to the right in the R direction as viewed from the front (see FIG. 3). This is because the thickness of the sheet 200 is taken into consideration when creating the file 10.
[0030] Furthermore, the first height 215, the third height 235, and the fourth height 245 are all approximately the same height (dimension), whereas the second height 225 is smaller (configured to be shorter) than these heights. In other words, in the file creation sheet 200, the second sheet portion 220 is in a state of being eroded at least by the amount of the overlap portion 300 and the gap portion 400 arranged on the first sheet portion 210.
[0031] As described above, since the overlap portion 300 is disposed inside the file creation sheet 200, the overlap portion 300 does not protrude outside the file creation sheet 200, so a single rectangular sheet 100 of a standard size can be processed to create the file creation sheet 200 to be used for creating a file. This allows sheets of paper, such as thick paper or cardboard, to be used without waste. Note that the overlap portion 300 is arranged inside the file creation sheet 200, and the overlap portion 300 does not protrude outside the file creation sheet 200, which means that the overlap portion 300 is not arranged at the first edge portion 211, the second edge portion 221, the second upper end portion 223, the third upper end portion 233, the third edge portion 231, the fourth edge portion 211, the fourth upper end portion 243, and the first upper end portion 213, which form the outer periphery of the file creation sheet 200 in a counterclockwise direction in Figure 3, but the overlap portion 300 is arranged at the first lower end portion 214 inside the file creation sheet 200.
[0032] Next, the file 10 is created using the file creation sheet 200. The third lower end 234 and the fourth lower end 244, which are connected to each other, of the file creation sheet 200 are valley-folded. This causes the second sheet portion 220 and the third sheet portion 230 to overlap the first sheet portion 210 and the fourth sheet portion 240.
[0033] Thereafter, the second spine 222 and the third spine 232, and the first spine 212 and the fourth spine 242 are each valley-folded. The file 10 can then be created by adhering the overlapping portion 300 to the fourth sheet portion 240 with an adhesive beyond the fourth bottom end 244. As described above, the file 10 can be created by adhering the overlapping portion 300 to the fourth sheet portion 240, thereby avoiding the problem of cracking of the heat-welded portion, which occurs with files created by heat-welding synthetic resin sheets. Furthermore, since the overlapping portion 300 is located inside the file-creation sheet 200, when the rectangular sheet 100 is made of paper and is a sheet of paper, the standard dimensions of the sheet can be used without waste. The same applies when a synthetic resin sheet is used. [Explanation of symbols]
[0034] 10 files 100 sheets 200 File Creation Sheet 210 First seat section 211 1st small end 211a First index section 212 1st back 213 1st upper end 214 1st lower end 220 Second seat section 221 2nd small end 221a Second index section 222 2nd back 223 Second upper end 224 Second lower end 230 Third seat section 231 3rd small end 231a Third Index Section 232 Third back 233 Third upper end 234 Third lower end 240 4th seat section 241 4th small end 241a 4th Index Section 242 4th back 243 4th upper end 244 4th lower end 300 overlapping area 400 Gap
Claims
1. a first sheet portion that becomes the surface when configured as a file; a second sheet portion that serves as a partition when configured as a file; a third sheet portion that serves as a partition when configured as a file; a fourth sheet portion that becomes the back side when configured as a file; The first sheet portion includes a first spine portion that forms a spine when configured as a file; The second sheet portion includes a second spine portion that forms a spine when configured as a file; The third sheet portion includes a third spine portion that forms a spine when configured as a file; the fourth sheet portion has a fourth spine portion that forms a spine when configured as a file, the first sheet portion has a first lower end portion that forms a lower end portion when configured as a file; the third sheet portion has a third lower end portion that forms a lower end portion when configured as a file; the fourth sheet portion has a fourth lower end portion that forms a lower end portion when configured as a file; the first sheet portion has an adhesive portion for adhering to the fourth sheet portion when configured as a file, the first sheet portion, the second sheet portion, the third sheet portion, the fourth sheet portion, and the overlap portion are configured from a single rectangular sheet, The first back portion and the fourth back portion are connected to each other, The second back portion and the third back portion are connected to each other, a gap portion that connects the third lower end portion and the fourth lower end portion and is a gap between the overlap portion and the second sheet portion; In a front view of the single rectangular sheet, the second sheet portion is disposed below the first sheet portion, and the overlap portion is disposed between the first sheet portion and the second sheet portion, The overlap portion is connected to the first lower end portion, and when configured as a file, the overlap portion extends beyond the fourth lower end portion and is adhered to the fourth sheet portion.
2. In a front view of the single rectangular sheet, 2. A file creation sheet according to claim 1, wherein the height of said second sheet portion is smaller than the height of said first sheet portion.
3. The first sheet portion has a first edge portion that forms an edge when configured as a file. the second sheet portion has a second edge portion that forms an edge when the second sheet portion is configured as a file; the third sheet portion has a third edge portion that forms an edge when configured as a file, The first edge portion has a first index portion serving as a heading index, The second edge portion has a second index portion serving as a heading index, 3. A file creation sheet according to claim 1, wherein the third edge portion has a third index portion serving as a heading index.
4. Using the file creation sheet according to any one of claims 1 to 3, The connected third lower end portion and the fourth lower end portion are valley-folded so that the second sheet portion and the third sheet portion overlap the first sheet portion and the fourth sheet portion, The first spine and the fourth spine are connected together; The connected second spine portion and the third spine portion are each valley-folded, and The file has an overlap portion extending beyond the fourth lower end and adhered to the fourth sheet portion.