File

Abstract

To provide a file that enables securely binding two-hole documents using only a single foldable plastic film sheet, without using any special fasteners.SOLUTION: A flexible plastic film sheet is folded in half and binding rod cut out pieces are provided along the crease in a vertical row such that the heads are oriented in opposite directions, and notches are created at the tips of the cut out pieces to fit them together.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a file that can bind documents using two-hole binding only with flexible plastic film sheets. [Background technology]

[0002] Although we are said to be entering a paperless era, the usefulness of physical paper documents remains. Documents, catalogs, reports, proposals, and other materials are filed by sandwiching them between transparent or translucent film, with the folded portion of the film sandwiched between concave rails with a horseshoe-shaped cross section made of plastic or metal, for storage, submission, and other purposes (Non-Patent Document 1, Patent Document 1). The transparent or translucent film protects the bound documents from dirt, allows you to identify the documents at a glance without opening the file, and allows you to view the contents of the documents while they are bound, just like a book, for added convenience. In the stationery industry, this type of file is considered a presentation stationery genre, and many stationery manufacturers have commercialized it.

[0003] However, in the method of sandwiching documents and plastic film using a horseshoe-shaped concave rail as typified by Non-Patent Document 1 and Patent Document 1, the rail portion is thicker than the other surfaces, making it difficult to stack multiple documents, and it is not possible to simultaneously bind multiple documents in order to prevent a single document from falling out, and conversely, if multiple documents are bound, it is difficult to prevent a single document from falling out. Therefore, the shape of the concave portion is set to a medium thickness, which is likely to be used most frequently, and there is a problem that it is not possible to sandwich several or many documents.

[0004] To solve these problems, attempts have been made to cut out a portion of a flexible plastic film sheet, insert it into holes in the documents, and use the cut-out pieces to bind and secure the documents (Patent Documents 2 and 3). These attempts avoid the problem of the binding portion protruding and becoming thick because they do not require a horseshoe-shaped concave rail in cross section. However, they have problems such as insufficient prevention of documents from falling out, complicated operation when trying to increase the prevention force, loss of flatness of the cover, and increased costs, making them not highly practical products. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Published Utility Model Public Law No. Hei 2-111583 [Patent Document 2] Patent No. 6763599 [Patent Document 3] Patent Publication No. 2010-274535 [Patent Document 4] Public Practical Application Showa 52-132618 [Non-patent literature]

[0006] [Non-Patent Document 1] 2023 Kokuyo General Catalog Product Name: Rail Clear Holder Product Number: Hu-TP760W Summary of the Invention [Problem to be solved by the invention]

[0007] The problem that this invention aims to solve is to solve all of the above problems with a file made by simply folding a single flexible plastic film sheet in half. In other words, the object of this invention is to solve the problems of Patent Documents 2 and 3, which attempt to solve the problem of Patent Document 1.

[0008] In Patent Document 2, the two binding hole inserting pieces 40 do not fit together after the documents are inserted through the binding holes, so there is a limit to the number of sheets that can be bound to prevent the documents from falling out, and only a small number of documents can be bound reliably. Furthermore, because the binding hole inserting pieces 40 protruding from the binding holes of the documents are not fixed, the appearance is poor and unsightly. Naturally, the cost is low, but this is not an acceptable problem.

[0009] In Patent Document 3, the two binding feet 21 are arranged perpendicular to the center crease 4, which is the most disadvantageous design for resisting the force of documents falling. This is because the force of documents attempting to fall is absorbed by the surface of the flexible film. Even with a flexible film like the present invention, documents are most resistant to falling when the side edges of the base of the cutout portion are positioned perpendicular to the surface. In addition, after the documents are inserted through the binding holes 7, the tips of the binding feet 21 must be firmly fixed somewhere in the file. If the tips were to be fixed using only a single sheet of plastic film, the tips would inevitably protrude outside the file, which would require the preparation of a separate component, which would be cost-inefficient.

[0010] Furthermore, Patent Document 4 cannot be made from a single piece of plastic film and can only be made by resin molding, but is introduced here because it appears to be a film at first glance. The interlocking toothed portions 6 on the strips 4 that act as binding strings are designed to interlock and fit together. To achieve this, including the cost of expensive molds, makes the product expensive. Furthermore, to ensure a tight fit, the interlocking portions must be quite thick, making the method of Patent Document 1 less likely to be avoided. [Means for solving the problem]

[0011] The first means for solving the problem is a file made by folding a flexible plastic film sheet in half, with two binding rod cutout pieces arranged vertically on one side of the sheet along the fold line with their tips facing opposite directions, and notches made at the tips of the two cutout pieces, with the two binding rod cutout pieces being long enough to fit into each other's notches.

[0012] A second means for solving the problem is the file according to the first means for solving the problem, characterized in that the widths of the binding rod cutout pieces are different from each other. [Effects of the Invention]

[0013] The advantages of the present invention are as follows. The file of the present invention is composed of only one flexible plastic film sheet and does not require a horseshoe-shaped concave rail or special binding devices. This allows various documents, such as literature, catalogs, reports, and proposals, to be bound in files, from one to many sheets. Furthermore, these files can be stacked, making management, organization, and storage after filing extremely easy. Naturally, the file cover has no protrusions or cutouts on its entire surface, resulting in a neat and beautiful appearance after filing. Furthermore, the binding rod cutouts 5a, 5b and 6a, 6b fit together easily and securely, allowing documents to be bound without worrying about them falling out.

[0014] Two binding rod cut-out pieces (5a, 5b and 6a, 6b) are arranged vertically from one side of a folded flexible plastic film sheet along fold line 4, with their tips facing in opposite directions and with notches at the tip-side end, and are long enough to fit together.By inserting the tips of the cut-out pieces into the binding holes of the documents without using any special binding equipment and fitting the tips of the cut-out pieces together, the documents can be completely bound in a file and there is no need to worry about them falling out.

[0015] Simply placing the binding rod cutouts along the fold line 4 prevents documents from falling out. However, as in Patent Document 4, if they are placed perpendicular to the fold line, the flexibility of the film reduces the prevention effect, and the ends cannot be fitted together. Therefore, documents must be prevented from falling out by inserting them into a part of the file body, such as the cover. As in the present invention, placing the cutouts along the fold line maximizes the prevention effect, even if the film is flexible. Furthermore, Patent Document 2 suggests that this effect is best achieved by making an angle of 4 to 6 degrees from parallel to the fold line referred to in the present invention (fold curve 30 in Patent Document 2), but parallel alignment is preferable both theoretically and experimentally.

[0016] As described above, by using a transparent or translucent flexible plastic film sheet in the file of the present invention, it is possible to identify what documents are contained in the file without opening it, and it is of course possible to see the contents of the documents while they are bound.However, since there is no need for a separate binding device such as a horseshoe-shaped concave rail or flat file, the files can be stacked, there is no need to worry about documents falling, and the appearance is also good.

[0017] Furthermore, the file of the present invention can be formed by punching a flexible plastic film sheet once with a punching die, and then folded in the middle to complete the file. Therefore, there is no file easier to produce, and it is also excellent in that it can be produced inexpensively. While functionally inferior to the present invention, even a commercially available clear folder (or clear folder) that simply holds around 10 documents requires not only punching but also a seal on the bottom. In terms of cost, the product of the present invention is superior in both functionality and cost-effectiveness. DETAILED DESCRIPTION OF THE INVENTION

[0018] Example 1 will be shown. A 0.2 mm thick polypropylene film (hereinafter abbreviated as PP film) was cut to a size of 440 mm x 305 mm as the flexible plastic film, and as shown in Figure 1, binding rod cutout pieces 5a and 5b were provided in a vertical row parallel to the fold line 4 on the back cover 3. The binding rod cutout pieces were cut out so that they could be raised vertically at the positions of the two-hole document binding holes. There are many types of flexible plastic film sheets other than PP, such as polystyrene, PET, and acrylic, and they can be used depending on the purpose or on the importance of transparency.

[0019] As shown in Figure 2, the binding pin cutout piece 5a is divided into a wide portion 5a1 at the tip and a narrow portion 5a2 that is equal to or smaller than the diameter of the document binding hole, and the wide portion 5a1 has an opening slit 5a3 through which the tip portion 5b1 of the binding pin cutout piece 5b can be inserted, and a fold 5a4 is provided in the length direction of the wide portion 5a1 at the tip of the cutout piece 5a. The binding pin cutout piece 5b is divided into a width portion 5b2 that is equal to or smaller than the diameter of the document binding hole and an even narrower tip portion 5b1, and V-shaped slits 5b3 are provided on both end pieces of 5b1 (Figure 2 shows the binding pin cutout pieces 5a and 5b already bent in opposite directions for fitting).

[0020] The opening slit 5a3 of the binding pin cutout piece 5a is shaped roughly like a baseball home base, and when the tip 5b1 of the binding pin cutout piece 5a is inserted into the opening slit and the binding pin cutout piece is pulled in the direction of peeling, the V-shaped slit 5b3 and the diagonal part of the opening slit 5a3 bite into each other. Of course, the V-shaped slit 5b3 is cut in a direction that bites into the opening slit 5a3 (Figure 2). The center of Figure 2 shows the state 5a+5b in which the two binding pin cutout pieces are fitted together.

[0021] By making the width of the tip 5a1 of the binding rod cutout piece 5a within twice the diameter of the binding hole of the document, when inserting the tip 5a1 of the binding foot cutout piece 5a into the binding hole of the document, it is folded in half along the crease 5a4 and inserted. This allows the width of the tip 5a1 to be wider than the diameter of the binding hole, making it possible to provide an opening slit 5a3 and facilitating engagement with the V-shaped slit 5b3 provided in the tip 5b1 of the other binding rod cutout piece 5b.

[0022] Figure 3 is a perspective view showing the state immediately after the binding pin cutouts 5a and 5b have been inserted into the binding holes of the documents. In this state, even if 20 to 30 A4 documents are hung by hand by the cover 2, the documents will not come off the binding pin cutouts, which is such an effect of arranging the binding pin cutouts parallel to the file crease 4.

[0023] 4 is a perspective view showing a state in which the two binding rod cutout pieces 5a, 5b standing upright from the document binding holes are fitted together in the manner shown in FIG. 2, following the state shown in FIG.

[0024] As Example 2, Figure 5 shows a file according to the present invention, which has binding rod cutout pieces 6a and 6b with different shapes and interlocking methods than binding rod cutout pieces 5a and 5b. That is, as shown in Figure 6, binding rod cutout pieces 6a and 6b have multiple diagonal slits 6a3 and 6b3 on the side edges of tip portions 6a1 and 6b1, and these slits are inserted and interlocked. By making the width of these slits half the width of tip portions 6a1 and 6b1, the interlocking portions can be integrated and firmly fixed. [Brief explanation of the drawings]

[0025] [Figure 1] Plan view of the file in an open state according to the first embodiment [Figure 2] The binding rod cutout pieces and the fitting method in Example 1 are shown. However, the binding rod cutout pieces are folded back from the base in the fitting direction. [Figure 3] FIG. 1 is a perspective view of the state immediately after the binding rod cutout pieces are inserted into the binding holes of the document in the first embodiment; [Figure 4] 4 is a perspective view of the file with the binding rod cutout piece fitted in FIG. [Figure 5] Plan view of a file having a binding rod cutout piece as Example 2 [Figure 6] Detailed view of the binding rod cutout piece and fitting diagram as Example 2 [Explanation of symbols]

[0026] P Documents 1 Invention File 2 Front cover 3 Back cover 4 Folding 5a, 5b Binding rod cutouts 5a1 5a binding rod cut-out piece wide tip 5a2 5a Binding rod cutout piece narrow base 5a3 (home plate-shaped opening) notch 5a4 fold 5b1 5b Binding rod cut-out piece tip narrow part 5b2 5b Binding rod cut-out base 5b3 (V-shaped) notch 6a, 6b Binding rod cutouts 6a1 Tip of binding rod cutout 6a2 Binding rod cut-out piece base 6a3 (diagonal) cut 6b1 Tip of binding rod cutout 6b2 Binding rod cut-out base 6b3 (diagonal) cut

Claims

1. This file is made by folding a flexible plastic film sheet in half, and is characterized in that two binding rod cutout pieces are provided in a vertical row on one surface of the sheet along the crease of the sheet so that their tip ends face opposite directions, and notches are provided at the tip ends of the two cutout pieces, and the two binding rod cutout pieces are provided with lengths such that the notches can fit together.

2. 2. The file according to claim 1, wherein the widths of the tip ends of the binding rod cutout pieces are different from each other.

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