bag body
A flat pouch made by folding a single paper sheet addresses plastic waste concerns and manufacturing costs, offering low-cost, environmentally friendly document carriers with airtight storage and easy access.
Patent Information
- Application Number
- JP2022179497
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-11-09
- Publication Date
- 2026-02-18
- Estimated Expiration
- 2042-11-09
AI Technical Summary
The increasing problem of plastic waste and the high manufacturing costs associated with forming pockets in resin sheets for document carriers, along with the desire for environmentally friendly alternatives.
A flat pouch is created by folding a single paper sheet to form pockets, using fixing pieces to secure the folds, and optionally incorporating perforations and windows for visibility and functionality, allowing for easy production of document carriers.
The solution enables the production of environmentally friendly document carriers at low cost, with simple folding and fixing processes, providing airtight storage and easy access to contents.
Smart Images
Figure 0007816079000001 
Figure 0007816079000002 
Figure 0007816079000003
Abstract
Description
[Technical Field]
[0001] The present invention relates to a flat pouch capable of storing documents and the like. [Background technology]
[0002] BACKGROUND ART Conventionally, examples of pouches that can be used to carry documents and the like include files and envelopes, and various pouches with improved structures to make them easier for users are known.
[0003] For example, Patent Document 1 describes a clear file with three pockets formed by folding a single resin sheet and heat-sealing the bottom edge, and Patent Document 2 describes a clear file with tearable micro-perforations on the top and left edges so that when a single synthetic resin sheet is folded in half with the folded edge at the right edge, the left and bottom edges are heat-sealed in a strip shape, and the top edge is sealed to change from an envelope state to a clear file state. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Utility Model Registration No. 3233573 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-132326 Summary of the Invention [Problem to be solved by the invention]
[0005] In recent years, the problem of plastic waste has become more serious worldwide, and there is a desire to switch from plastic to other materials in order to improve the global environment. Furthermore, forming pockets in resin sheets requires separate heat welding equipment and processes, which is expected to increase the manufacturing effort and costs.
[0006] An object of the present invention is to provide a bag that is simple, low-cost, and environmentally friendly. [Means for solving the problem]
[0007] A first form of bag according to the present invention is a flat bag in which a pocket is formed by folding a single paper sheet, the single paper sheet comprising at least a first, approximately rectangular sheet having a first fixing piece connected to one of its top or bottom edges, a second, approximately rectangular sheet having either the left or right edge connected to one of the left or right edges of the first sheet, and a third, approximately rectangular sheet connected to the other of the left or right edges of the first sheet or the other of the left or right edges of the second sheet, and the first and second sheets are folded at each connecting portion so as to sandwich the other sheet, and the first fixing piece connected to the first sheet is folded over and fixed to the second sheet, thereby forming a file shape with at least two pockets.
[0008] A second form of the bag body according to the present invention is a bag body described as the first form, characterized in that the third sheet is narrower than the first sheet and is connected to either the left or right edge of the first sheet, a second elongated fixing piece is connected to either the left or right edge of the second sheet so that it can be overlapped and fixed to the third sheet, a first perforation is formed between the first sheet and the second sheet, and a first window portion is formed in the first sheet and / or the second sheet so that part of the contents of the document stored in the pocket can be seen.
[0009] A third form of the bag body according to the present invention is a bag body described as the first form, characterized in that the third sheet is narrower than the first sheet and is connected to either the left or right edge of the first sheet, a long and thin second fixing piece is connected to either the left or right edge of the second sheet so that it can be overlapped and fixed to the third sheet, a third fixing piece is connected to either the top or bottom edge of the first sheet so that it can be folded over and fixed to the second sheet, a first perforation is formed between the first sheet and the second sheet, and a second perforation is formed between the first sheet and the third fixing piece so that the third fixing piece can be separated from the first sheet, and the second fixing piece connected to the second sheet is overlapped and fixed to the third sheet, and the first fixing piece and the third fixing piece connected to the first sheet are each folded over and fixed to the second sheet, thereby forming an envelope shape with at least two pockets inside.
[0010] A fourth form of the bag body according to the present invention is a bag body described as the first form, characterized in that the third sheet is connected to a portion of either the left or right edge of the first sheet, a first perforation is formed between the first sheet and the second sheet, the single paper sheet further comprises a substantially rectangular fourth sheet connected to the other of the left or right edge of the second sheet, a fourth fixing piece that can be folded over and fixed to the second sheet is connected to the remaining portion of the other of the left or right edge of the first sheet, and the third sheet has a cut line formed in it that corresponds to the outer contour of the fourth fixing piece connected to the first sheet.
[0011] A fifth form of the bag body according to the present invention is a bag body described as the first form, characterized in that the third sheet is connected to the other of the left and right edges of the second sheet, a fourth fixing piece that can be folded over and fixed to the second sheet is connected to the other of the left and right edges of the first sheet, and a first perforation is formed between the first sheet and the second sheet.
[0012] In a sixth embodiment of the bag according to the present invention, the third sheet is connected to the other edge of either the left or right side of the second sheet, a third fixing piece that can be folded over and fixed to the second sheet is connected to the other edge of either the top or bottom of the first sheet, a fourth fixing piece that can be folded over and fixed to the second sheet is connected to the other edge of either the left or right side of the first sheet, a second perforation is formed between the first sheet and the third fixing piece so that the third fixing piece can be separated from the first sheet, and a fourth fixing piece is formed between the first sheet and the fourth fixing piece so that the fourth fixing piece can be attached to the first sheet. A third perforation is formed so that the second sheet can be separated from the sheet, and a window perforation is formed at the top of the second sheet so that a window is formed through which the contents inside the pocket can be seen, and the first fixed piece, the third fixed piece, and the fourth fixed piece, which are connected to the first sheet, are each folded and fixed to the second sheet, thereby taking on an envelope shape with at least two pockets inside, and the third fixed piece is adhesively fixed at least to the area of the second sheet surrounded by the window perforation.This is a bag body described as a first form.
[0013] A seventh aspect of the bag according to the present invention is the bag described as any one of the first to sixth aspects, characterized in that an index tab is connected to the edge of each sheet.
[0014] An eighth form of the bag body according to the present invention is a bag body described as the seventh form, which refers to any one of the fourth to sixth forms, characterized in that a second window portion is formed in the upper part of each sheet so that the contents inside the pocket can be visually confirmed.
[0015] The bag blank according to the present invention is a bag blank described as a first form, characterized in that it comprises at least a rectangular first sheet having a first fold line and a second fold line extending perpendicular to the first fold line, a rectangular second sheet connected to the first sheet via the first fold line, a rectangular third sheet (i) connected to the first sheet via a third fold line of the first sheet opposite the first fold line, or (ii) connected to the second sheet via a fourth fold line of the second sheet opposite the first fold line, and a first fixing piece connected to the first sheet via the second fold line. [Effects of the Invention]
[0016] According to the present invention, a file having two or more pockets can be produced simply and at low cost by simply folding one sheet and fixing it with a fixing piece, and furthermore, since the one sheet is made of paper, it is possible to provide a bag body that is considerate of the global environment. [Brief explanation of the drawings]
[0017] [Figure 1] 1A and 1B are plan views of a bag having two pockets according to a first embodiment of the present invention, in which (a) is a front view of the bag, and (b) is a plan view of a blank in which the bag is unfolded. [Figure 2] 10A and 10B are plan views of a bag body having two pockets according to a second embodiment of the present invention, in which (a) is a rear view of the bag body before opening, (b) is a rear view of the bag body after opening and removing the third fixing piece, and (c) is a plan view of the blank when the bag body is unfolded. [Figure 3] 10A and 10B are plan views of a bag having three pockets according to a third embodiment of the present invention, in which (a) is a rear view of the bag, and (b) is a plan view of a blank in which the bag is unfolded. [Figure 4] 10A and 10B are plan views of a bag having two pockets according to a fourth embodiment of the present invention, in which (a) is a front view of the bag, and (b) is a plan view of a blank in which the bag is unfolded. [Figure 5]10A and 10B are plan views of a bag body having two pockets according to a fifth embodiment of the present invention, in which (a) is a rear view of the bag body before opening, (b) is a rear view of the bag body after opening and removing the third and fourth fixing pieces, and (c) is a plan view of the blank when the bag body is unfolded. DETAILED DESCRIPTION OF THE INVENTION
[0018] Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5. However, the present invention is not limited to this embodiment. In the present specification and claims, the term "substantially rectangular" includes not only rectangular, oblong, and approximately rectangular shapes, but also square and approximately square shapes. In the present specification and claims, the term "bag" refers to a file and an envelope. In the present specification and claims, the term "file" refers to a file having the shape of a clear file, with the right side (or left side) and top side open and the left side (or right side) and bottom side closed, as well as a file simply having a pocket and an opening and a structure for storing documents and the like. In the present specification, claims, and drawings, a "bag blank" refers to a bag before it is formed (before bonding) and before it is torn along the perforations.
[0019] First Embodiment 1A and 1B are plan views of a bag having two pockets according to this embodiment, where FIG. 1A is a front view of the bag, and FIG. 1B is a plan view of a blank in which the bag is unfolded.
[0020] The bag according to the present invention is a flat bag in which a pocket is formed by folding a single paper sheet, and the bag 100F according to this embodiment has a file shape. The pocket can store documents and the like. The paper sheet according to the present invention is made of cardboard. In the present invention, the items stored in the bag are not limited to documents, and various items can be used as long as they are thin and have dimensions that allow storage.
[0021] As shown in Figures 1(a) and 1(b), the single paper sheet 100B constituting the bag body 100F of this embodiment comprises at least a first sheet 1 of approximately rectangular shape with a first fixed piece 11 connected to either the top or bottom edge L2 of the first sheet 1, a second sheet 2 of approximately rectangular shape with either the left or right edge connected to either the left or right edge L1 of the first sheet 1, and a third sheet 3 of approximately rectangular shape connected to the other of the left or right edges L3 of the first sheet 1.The first sheet 1 and the second sheet 2 are folded at each connecting portion so as to sandwich the other sheet, and the first fixed piece 11 connected to the first sheet 1 is folded over and fixed to the second sheet 2, thereby forming a file shape with at least two pockets. In addition, in the present invention, it is also possible for the third sheet 3 to be connected to the other left or right edge L4 of the second sheet 2 rather than to the other left or right edge L3 of the first sheet 1 (see the fourth and fifth embodiments described below).
[0022] 1(a) and 1(b), the single paper sheet 100B constituting the bag 100F according to this embodiment can be folded like a double door, with the third sheet 3 narrower than the first sheet 1 and connected to either the left or right edge L3 of the first sheet 1, and a thin second fixing piece 22 connected to either the left or right edge L4 of the second sheet 2 so that the third sheet 3 can be secured by being overlaid on the third sheet 3, a first perforation P1 is formed between the first sheet 1 and the second sheet 2, and first windows 1w and 2w are formed in the first sheet 1 and the second sheet 2 so that part of the contents of a document stored in the pocket (e.g., the title, etc.) can be seen. By making the third sheet 3 narrower than the first sheet 1, the overall size of the sheets can be reduced, and the cost of the material for the bag can be kept low.
[0023] In the present invention, as in the modified examples and embodiments described later, the third sheet 3 does not have to be narrower than the first sheet 1, and may be about the same width as the first sheet 1, and the second fixing piece 22 may have a certain width so that it can be folded over and fixed to the second sheet 2, as in the fourth and fifth embodiments described later, or the first perforation P1 may not be formed between the first sheet 1 and the second sheet 2.
[0024] In addition, in this embodiment, first window portions 1w, 2w are formed in the first sheet 1 and the second sheet 2, but in the present invention, the first window portions 1w, 2w may be formed in the first sheet 1 or the second sheet 2, and a form in which the first window portions 1w, 2w are not formed is also acceptable.
[0025] Furthermore, in the bag 100F according to this embodiment, as shown in Figures 1(a) and 1(b), index (indexing) tabs 1T and 3T are connected to the edges of the sheets 1 and 3, respectively. The indexing tabs are spaced apart so that the information written on each tab can be seen at a glance when the bag is in a file state.
[0026] 1(a) and 1(b), the blank 100B of the bag body 100F includes at least a rectangular first sheet 1 having a first fold line L1 and a second fold line L2 extending perpendicular to the first fold line L1, a rectangular second sheet 2 connected to the first sheet 1 via the first fold line L1, a rectangular third sheet 3 connected to the first sheet 1 via a third fold line L3 of the first sheet 1 opposite the first fold line L1, and a first fixing piece 11 connected to the first sheet 1 via the second fold line L2. Note that, as described above, the present invention also allows for a configuration in which the third sheet 3 is connected to the second sheet 2 via a fourth fold line L4 of the second sheet 2 opposite the first fold line L1 (see fourth and fifth embodiments described below).
[0027] 1(b), a user may fold the third sheet 3 at the third fold line L3 so that it overlaps the first sheet 1, then fold the second sheet 2 at the first fold line L1 (first perforation P1) so that it overlaps the third sheet 3 (sandwiching the other sheet 3 between the first sheet 1 and the second sheet 2), adhere the second fixing piece 22 connected to the second sheet 2 to the third sheet 3 with glue or a sticker to form a spine, and then fold the first fixing piece 11 connected to the first sheet 1 at the second fold line L2 so that it overlaps the second sheet 2 and adhere them with glue or a sticker to form a bottom, thereby completing the bag 100F shown in FIG. 1(a). The bag 100F is cylindrical with a sealed closure that prevents documents placed inside from falling out and provides a certain level of airtightness. When the first perforation P1 is broken from the cylindrical (closed) state of the bag body 100F, it becomes a clear file shape, which allows documents and the like to be easily inserted and removed (especially from the side).
[0028] According to this embodiment, a single sheet 100B can be folded and secured to the first fixed piece 11 with a seal or the like, making it possible to easily and inexpensively produce a file 100F having two or more pockets. Furthermore, since the single sheet 100B is made of paper, it is possible to provide a bag that is environmentally friendly.
[0029] Second Embodiment In the second embodiment of the present invention, unlike the first embodiment, a third fixed piece 13 is connected to the first sheet 1, allowing it to take on an envelope shape and be usable as a file after opening.
[0030] Fig. 2 is a plan view of a bag having two pockets according to this embodiment, with Fig. 2(a) being a rear view of the bag before opening, Fig. 2(b) being a rear view of the bag after opening and removing the third fixed piece 13, and Fig. 2(c) being a plan view of the blank when the bag is unfolded. Of the elements constituting bags 200E, 200F and blank 200B according to this embodiment, those having similar functions are assigned the same reference numerals as in the first embodiment, and their description will be omitted.
[0031] The single paper sheet 200B constituting the bag body 200F according to this embodiment can be folded like a double door, as shown in FIGS. 2(a) to 2(c). As in the first embodiment, the third sheet 3 is narrower than the first sheet 1 and is connected to the third edge L3 of the first sheet 1. A thin second fixing piece 22 is connected to the fourth edge L4 of the second sheet 2, and can be fixed by overlapping it on the third sheet 3. A first perforation P1 is formed between the first sheet 1 and the second sheet 2. A third fixed piece 13 is connected to the upper edge of sheet 1, which can be folded over and fixed to the second sheet 2, and a second perforation P2 is formed between the first sheet 1 and the third fixed piece 13 so that the third fixed piece 13 can be separated from the first sheet 1.The second fixed piece 22 connected to the second sheet 2 is folded over and fixed to the third sheet 3, and the first fixed piece 11 and the third fixed piece 13 connected to the first sheet 1 are each folded over and fixed to the second sheet 2, thereby forming an envelope shape with at least two pockets inside.
[0032] Furthermore, in the bag body 200F according to this embodiment, as shown in FIGS. 2(a) to 2(c), index tabs 2T and 3T are connected to the edges of the second sheet 2 and the third sheet 3, respectively.
[0033] For example, a user may fold a paper blank 200B as shown in Figure 2(c) by making a valley fold at the third fold line L3 so that the third sheet 3 overlaps the first sheet 1, then fold the second sheet 2 by making a valley fold at the first fold line L1 (first perforation P1) so that it overlaps the third sheet 3 (so that the first sheet 1 and second sheet 2 sandwich the other sheet 3 between them), and then attach the second fixed piece 22 connected to the second sheet 2 to the third sheet 3 with glue or a sticker to create a spine, and then make a valley fold at the second fold line L2 and the second perforation P2 so that the first fixed piece 11 and the third fixed piece 13 connected to the first sheet 1 overlap the second sheet 2 and adhere them with glue or a sticker to form a bottom, and then seal the top, thereby creating an envelope-shaped bag body 200E as shown in Figure 2(a). Thereafter, the second fixed piece 22 is released from the adhesive and the second perforation P2 formed on the base end edge of the second fixed piece 22 is broken, resulting in the file-shaped bag body 200F as shown in Fig. 2(b). Then, when the first perforation P1 is broken from the cylindrical state of the bag body 200F, it becomes a clear file shape, which allows documents and the like to be easily inserted and removed (especially from the side).
[0034] According to this embodiment, similar to the first embodiment, an envelope 200E or a file 200F having two pockets can be produced easily and at low cost, and furthermore, an environmentally friendly bag can be provided.
[0035] <Third embodiment> The third embodiment of the present invention differs from the first embodiment in that it further includes a substantially rectangular fourth sheet 4 that is connected to the second sheet 2, making it possible to have a file shape with three pockets.
[0036] 3A and 3B are plan views of a bag body having three pockets according to this embodiment, with Fig. 3A being a rear view of the bag body and Fig. 3B being a plan view of the blank when the bag body is unfolded. Of the elements constituting the bag body 300F and blank 300B according to this embodiment, those having similar functions are assigned the same reference numerals as in the first embodiment and their description will be omitted.
[0037] In this embodiment, as shown in Figures 3(a) and 3(b), the third sheet 3 is connected to a portion L3a of the third edge L3 of the first sheet 1, and a first perforation P1 is formed between the first sheet 1 and the second sheet 2, and in addition, one paper sheet 300B has an approximately rectangular fourth sheet 4 connected to the other edge L5 of either the left or right edge of the second sheet 2.
[0038] In addition, in this embodiment, as shown in Figures 3(a) and 3(b), a fourth fixed piece 14 that can be folded over and fixed to the second sheet 2 is connected to the remaining portion L3b of the third edge L3 of the first sheet 1, and a cut line CL is provided on the third sheet 3 so as to correspond to the outer contour of the fourth fixed piece 14 connected to the first sheet 1.
[0039] Furthermore, in the bag body 300F of this embodiment, as shown in Figures 3(a) and 3(b), index tabs 1T, 3T, and 4T are connected to the edges of the first sheet 1, the third sheet 3, and the fourth sheet 4, respectively.
[0040] In addition, in the bag body 300F of this embodiment, as shown in Figures 3(a) and 3(b), second window portions 1a, 2a, and 3a are formed in the upper parts of the first sheet 1, the second sheet 2, and the third sheet 3 so that the contents inside the pocket can be visually confirmed.
[0041] For example, the user may fold the blank 300B shown in FIG. 3(b) by making a valley fold along the fifth fold line L5 so that the fourth sheet 4 overlaps the second sheet 2, and then make a valley fold along a part L3a of the third fold line L3 so that the third sheet 3 overlaps the first sheet 1, and then make a valley fold along the first fold line L1 (first perforation P1) of the folded fourth sheet 4 so that it overlaps the folded third sheet 3 (removing the first sheet 1 and the second sheet 2). 3(a) is obtained by folding the bag 300F (so that the other sheets 3 and 4 are sandwiched between the first sheet 1 and the second sheet 2), then making a valley fold at the remaining portion L3b of the third fold line L3 so that the fourth fixed piece 14 connected to the first sheet 1 is superimposed on the second sheet 2 and bonded with glue or a sticker to form the spine, and then making a valley fold at the second fold line L2 so that the first fixed piece 11 connected to the first sheet 1 is superimposed on the second sheet 2 and bonded with glue or a sticker to form the bottom. Then, by breaking the first perforation P1 formed on the first fold line L1 from the state of the bag 300F, it becomes a clear file-like shape with three pockets that make it easy to insert and remove documents (especially from the side).
[0042] According to this embodiment, similar to the first embodiment, a file 300F having three pockets can be produced easily and at low cost, and furthermore, it is possible to provide an environmentally friendly bag.
[0043] <Fourth embodiment> In the fourth embodiment of the present invention, unlike the first embodiment, the third sheet 3 is connected to the fourth edge L4 of the second sheet 2, and the third edge L3 of the first sheet 1 is connected to a fourth fixed piece 14 which has a different shape from the elongated second fixed piece 22, can be folded over and fixed to the second sheet 2, and is wider than the second fixed piece 22.
[0044] 4A and 4B are plan views of a bag body having two pockets according to this embodiment, with Fig. 4A being a front view of the bag body and Fig. 4B being a plan view of the blank when the bag body is unfolded. Of the elements constituting the bag body 400F and blank 400B according to this embodiment, those having similar functions are assigned the same reference numerals as in the first embodiment and their description will be omitted.
[0045] In this embodiment, as shown in Figures 4(a) and 4(b), similar to the first embodiment, a first perforation P1 is formed between the first sheet 1 and the second sheet 2, but unlike the first embodiment, the third sheet 3 is connected to the fourth edge L4 of the second sheet 2, and a fourth fixing piece 14 is connected to the third edge L3 of the first sheet 1, which can be folded over and fixed to the second sheet 2.
[0046] Furthermore, in the bag body 400F according to this embodiment, as shown in FIGS. 4(a) and 4(b), index tabs 1T and 3T are connected to the edges of the first sheet 1 and the third sheet 3, respectively.
[0047] In addition, in the bag body 400F of this embodiment, as shown in Figures 4(a) and 4(b), second window portions 1a, 2a, and 3a are formed on the upper part of the first sheet 1 to the third sheet 3 so that the contents inside the pocket can be visually confirmed.
[0048] For example, a user may fold blank 400B as shown in Fig. 4(b) by making a valley fold at fourth fold line L4 so that third sheet 3 overlaps second sheet 2, then make a valley fold at first fold line L1 (first perforation P1) so that folded third sheet 3 overlaps first sheet 1 (sandwiching another sheet 3 between first sheet 1 and second sheet 2), and then make valley folds at third fold line L3 and second fold line L2 so that fourth fixing piece 14 and first fixing piece 11 connected to first sheet 1 overlap second sheet 2, and adhere them with glue or a sticker to form a spine and a bottom, thereby completing bag 400F as shown in Fig. 4(a). Then, by tearing first perforation P1 on first fold line L1 from the cylindrical state of bag 400F, bag 400F becomes a clear file shape, allowing for smooth insertion and removal of documents (especially from the side).
[0049] According to this embodiment, similarly to the first embodiment, a file 400F having two pockets can be produced easily and at low cost, and furthermore, it is possible to provide an environmentally friendly bag.
[0050] Fifth Embodiment In the fifth embodiment of the present invention, unlike the first embodiment, a third fixed piece 13 is connected to the first sheet 1, allowing it to assume an envelope shape and be used as a file after opening. The third sheet 3 is connected to the fourth edge L4 of the second sheet 2, and a fourth fixed piece 14, which has a different shape from the elongated second fixed piece 22 and is wider than the second fixed piece 22, is connected to the third edge L3 of the first sheet 1. The fourth fixed piece 14 is capable of being folded over and fixed to the second sheet 2. Furthermore, the third fixed piece 13 connected to the first sheet 1 is fixed with an adhesive so that it at least partially overlaps the area surrounded by the window perforations 2p1 and 2p2 formed in the second sheet 2. When the third fixed piece 13 is peeled off from the second sheet 2, the window perforations 2p1 and 2p2 are torn, forming a window at the top of the second sheet 2 through which the contents of the pocket can be visually observed.
[0051] Fig. 5 is a plan view of a bag having two pockets according to this embodiment, with Fig. 5(a) being a rear view of the bag before opening, Fig. 5(b) being a rear view of the bag after opening and removing the third and fourth fixing pieces, and Fig. 5(c) being a plan view of the blank when the bag is unfolded. Of the elements constituting bags 500E, 500F and blank 500B according to this embodiment, elements having similar functions are designated by the same reference numerals as in the first embodiment, and their description will be omitted.
[0052] In this embodiment, as shown in Figures 5(a) to 5(c), as in the first embodiment, the third sheet 3 is connected to the fourth edge L4 of the second sheet 2, and a third fixing piece 13 that can be folded over and fixed to the second sheet 2 is connected to the upper edge of the first sheet 1, and a fourth fixing piece 14 that can be folded over and fixed to the second sheet 2 is connected to the right edge of the first sheet 1, and a second perforation P2 is formed between the first sheet 1 and the third fixing piece 13 so that the third fixing piece 13 can be separated from the first sheet 1, and a third perforation P3 is formed between the first sheet 1 and the fourth fixing piece 14 so that the fourth fixing piece 14 can be separated from the first sheet 1. That is, second perforations P2 and third perforations P3 are formed on the upper and right edges of the first sheet 1, respectively, so that the first sheet 1 can be shaped like a file with two pockets by separating the third fixed piece 13 and the fourth fixed piece 14 fixed to the second sheet 2. Note that the present invention also allows for a file with only the second perforation P2 or only the third perforation P3. Also, the present invention also allows for a file with only the third fixed piece 13 separated.
[0053] In addition, in this embodiment, as shown in Figures 5(a) to 5(c), window perforations 2p1 and 2p2 are formed in the upper part of the second sheet 2 so as to form a window through which the contents inside the pocket can be seen, and the first fixed piece 11, the third fixed piece 13, and the fourth fixed piece 14, which are connected to the first sheet 1, are each folded and fixed to the second sheet 2, thereby forming an envelope shape with at least two pockets inside, and the third fixed piece 13 is adhesively fixed at least to the area surrounded by the window perforations 2p1 and 2p2 of the second sheet 2.
[0054] Furthermore, in the bag body 500F according to this embodiment, as shown in FIGS. 5(a) to 5(c), index tabs 2T and 3T are connected to the edges of the second sheet 2 and the third sheet 3, respectively.
[0055] In the bag body 500F according to this embodiment, as shown in Figures 5(a) to 5(c), a second window portion 3a is formed in the upper part of the third sheet 3 so that the contents inside the pocket can be visually confirmed.
[0056] The user takes a paper blank 500B as shown in Figure 5(c) and folds it at the fourth fold line L4 so that the third sheet 3 overlaps the second sheet 2, then folds the folded third sheet 3 at the first fold line L1 so that it overlaps the first sheet 1 (so that the first sheet 1 and the second sheet 2 sandwich the other sheet 3), and then folds the fourth fixed piece 14, the first fixed piece 11, and the third fixed piece 13 connected to the first sheet 1 at the third fold line L3, the second fold line L2, and the second perforation P2 so that they overlap the second sheet 2, and glues them together with glue or a sticker, etc. to form the spine and bottom, and seals the top, thereby creating an envelope-shaped bag 500E as shown in Figure 5(a). Thereafter, the third fixed piece 13 is peeled off from the second sheet 2, the second perforation P2 formed on the base end edge of the third fixed piece 13 is broken, and the fourth fixed piece 14 is detached and the third perforation P3 formed on the base end edge of the fourth fixed piece 14 is broken, resulting in a file-shaped bag 500F as shown in FIG. 5(b). As described above, the third fixed piece 13 is adhered to the second sheet 2 so as to overlap at least the area surrounded by the window perforations 2p1 and 2p2. Therefore, when the third fixed piece 13 is peeled off from the second sheet 2, the sheet in that area is peeled off as well, forming windows. The windows have the same function as the second window 3a, so peeling off the third fixed piece 13 makes it possible to visually check the contents of the pocket.
[0057] According to this embodiment, similarly to the first embodiment, an envelope 500E or a file 500F having two pockets can be produced easily and at low cost, and furthermore, an environmentally friendly bag can be provided.
[0058] <Other> The present invention is not limited to the above-described embodiment or the modifications described throughout, and appropriate changes and modifications can be made without departing from the technical concept of the present invention. [Explanation of symbols]
[0059] 100F, 200F, 300F, 400F, 500F file (example of bag) 200E, 500E envelope (example of bag) 1~4 1st to 4th sheets 11 1st fixed piece 22 Second fixed piece 13 Third fixed piece 14 4th fixed piece 1T, 2T, 3T, 4T index tabs L1~L5: First to fifth edges (first to fifth folding lines) P1~P3 1st to 3rd perforations 100B, 200B, 300B, 400B, 500B bag blanks 1w, 2w First window 1a, 2a, 3a, 4a 2nd window 2p1, 2p2 window perforations
Claims
1. A flat bag in which a pocket is formed by folding a single paper sheet, The single paper sheet is a first sheet having a substantially rectangular shape and a first fixing piece connected to one of its upper and lower edges; a substantially rectangular second sheet having one of the left and right edges connected to one of the left and right edges of the first sheet; a substantially rectangular third sheet connected to the other of the left and right edges of the first sheet or the other of the left and right edges of the second sheet, the first sheet and the second sheet are folded at their connecting portions so as to sandwich another sheet between them, and the first fixing piece connected to the first sheet is folded over and fixed to the second sheet, thereby forming a file shape having at least two pockets; the third sheet is narrower than the first sheet and is connected to the other of the left and right edges of the first sheet; a second fixing piece that is elongated and can be fixed to the third sheet by being overlapped thereon is connected to the other edge of either the left or right side of the second sheet; A bag body, characterized in that a first perforation is formed between the first sheet and the second sheet.
2. A bag body as described in Claim 1, characterized in that the first sheet and / or the second sheet have a first window portion formed therein so that part of the contents of the document stored in the pocket can be seen.
3. A flat bag body in which a pocket is formed by folding a single paper sheet, The single paper sheet is a first sheet having a substantially rectangular shape and a first fixing piece connected to one of its upper and lower edges; a substantially rectangular second sheet having one of the left and right edges connected to one of the left and right edges of the first sheet; a substantially rectangular third sheet connected to the other of the left and right edges of the first sheet or the other of the left and right edges of the second sheet, the first sheet and the second sheet are folded at their connecting portions so as to sandwich another sheet between them, and the first fixing piece connected to the first sheet is folded over and fixed to the second sheet, thereby forming a file shape having at least two pockets; the third sheet is narrower than the first sheet and is connected to the other of the left and right edges of the first sheet; a second fixing piece that is elongated and can be fixed to the third sheet by being overlapped thereon is connected to the other edge of either the left or right side of the second sheet; a third fixing piece that can be folded over and fixed to the second sheet is connected to the other edge of either the top or bottom of the first sheet; a first perforation is formed between the first sheet and the second sheet; a second perforation is formed between the first sheet and the third fixing piece so that the third fixing piece can be separated from the first sheet; A bag body characterized in that the second fixed piece connected to the second sheet is overlapped and fixed to the third sheet, and the first fixed piece and the third fixed piece connected to the first sheet are each folded over and fixed to the second sheet, thereby forming an envelope-shaped bag body with at least two pockets inside.
4. A flat bag body in which a pocket is formed by folding a single paper sheet, The single paper sheet is a first sheet having a substantially rectangular shape and a first fixing piece connected to one of its upper and lower edges; a substantially rectangular second sheet having one of the left and right edges connected to one of the left and right edges of the first sheet; a substantially rectangular third sheet connected to the other of the left and right edges of the first sheet or the other of the left and right edges of the second sheet, the first sheet and the second sheet are folded at their connecting portions so as to sandwich another sheet between them, and the first fixing piece connected to the first sheet is folded over and fixed to the second sheet, thereby forming a file shape having at least two pockets; the third sheet is connected to a part of the other of the left and right edges of the first sheet, a first perforation is formed between the first sheet and the second sheet; The single paper sheet further includes a substantially rectangular fourth sheet connected to the other edge of either the left or right side of the second sheet, a fourth fixing piece that can be folded over and fixed to the second sheet is connected to the remaining portion of the other edge of either the left or right side of the first sheet; A bag body, characterized in that a cut line is provided in the third sheet so as to correspond to the outer contour of the fourth fixing piece connected to the first sheet.
5. A flat bag body in which a pocket is formed by folding a single paper sheet, The single paper sheet is a first sheet having a substantially rectangular shape and a first fixing piece connected to one of its upper and lower edges; a substantially rectangular second sheet having one of the left and right edges connected to one of the left and right edges of the first sheet; a substantially rectangular third sheet connected to the other of the left and right edges of the first sheet or the other of the left and right edges of the second sheet, the first sheet and the second sheet are folded at their connecting portions so as to sandwich another sheet between them, and the first fixing piece connected to the first sheet is folded over and fixed to the second sheet, thereby forming a file shape having at least two pockets; the third sheet is connected to the other edge of either the left or right side of the second sheet, a fourth fixing piece that can be folded over and fixed to the second sheet is connected to the other edge of either the left or right side of the first sheet; A bag body, characterized in that a first perforation is formed between the first sheet and the second sheet.
6. A flat bag body in which a pocket is formed by folding a single paper sheet, The single paper sheet is a first sheet having a substantially rectangular shape and a first fixing piece connected to one of its upper and lower edges; a substantially rectangular second sheet having one of the left and right edges connected to one of the left and right edges of the first sheet; a substantially rectangular third sheet connected to the other of the left and right edges of the first sheet or the other of the left and right edges of the second sheet, the first sheet and the second sheet are folded at their connecting portions so as to sandwich another sheet between them, and the first fixing piece connected to the first sheet is folded over and fixed to the second sheet, thereby forming a file shape having at least two pockets; the third sheet is connected to the other edge of either the left or right side of the second sheet, a third fixing piece that can be folded over and fixed to the second sheet is connected to the other edge of either the top or bottom of the first sheet; a fourth fixing piece that can be folded over and fixed to the second sheet is connected to the other edge of either the left or right side of the first sheet; a second perforation is formed between the first sheet and the third fixing piece so that the third fixing piece can be separated from the first sheet; a third perforation is formed between the first sheet and the fourth fixing piece so that the fourth fixing piece can be separated from the first sheet; a window perforation is formed in an upper portion of the second sheet so as to form a window through which the contents in the pocket can be visually confirmed; the first fixing piece, the third fixing piece, and the fourth fixing piece, which are connected to the first sheet, are folded over and fixed to the second sheet, respectively, to form an envelope shape having at least two pockets therein; The bag body is characterized in that the third fixing piece is adhesively fixed at least to the area of the second sheet surrounded by the perforations for the window portion.
7. 7. The bag according to claim 1, wherein an index tab is connected to an edge of each sheet.
8. The bag body according to claim 7, which is dependent on any one of claims 4 to 6, characterized in that a second window portion is formed in the upper part of each sheet so that the contents status in the pocket can be visually confirmed.
9. A bag blank according to claim 1, a rectangular first sheet having a first fold line and a second fold line extending in a direction perpendicular to the first fold line; a rectangular second sheet connected to the first sheet via the first folding line; (i) a rectangular third sheet connected to the first sheet via a third fold line of the first sheet opposite the first fold line, or (ii) connected to the second sheet via a fourth fold line of the second sheet opposite the first fold line; a first fixing piece connected to the first sheet via the second folding line; A bag blank comprising at least:
Citation Information
Patent Citations
JP1938-016354Y
Envelope having pocket
JP1997328140A
Document holder
JP2005022263A
Postal envelope
JP2010132326A
Clear file
JP2011230492A