Bag, bag manufacturing method, and bag manufacturing tool

Abstract

To provide a compactly-foldable bag while having designability, bag manufacturing method and bag manufacturing tool.SOLUTION: A bag includes a bag-shaped body made of a fabric formed by repeatedly forming convex folds and concave folds at substantially same intervals, a grip part extending from the body, and a holding part for holding a state where the body with it folded according to the convex folds and the concave folds is rolled up along a longitudinal direction thereof.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a bag, a method for manufacturing a bag, and a bag-making tool. [Background technology]

[0002] For example, Patent Document 1 (JP Patent Publication 2022-106959 A) discloses a foldable cloth bag. That is, the cloth bag includes a rectangular front body fabric that is woven and arranged forward, and in which inner vertical folding grooves and outer vertical folding grooves are alternately formed at left and right intervals, and a lower folded part is woven to extend from the lower part of the front body fabric, and a rectangular rear body fabric in which inner vertical folding grooves and outer vertical folding grooves are alternately formed at left and right intervals so as to be symmetrical with the front body fabric is woven to extend from the rear of the lower folded part; A bag body manufactured by folding the lower folded part of the main body fabric and sewing both side ends of the folded main body fabric with side sewing parts; and handle strings on both sides that are woven to extend integrally from both sides of the open end of the rear main body fabric and each end is sewn and connected to both sides of the open end of the front main body fabric with string sewing parts. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-106959 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the body of the cloth bag disclosed in Patent Document 1 is roughly rectangular, and the inner and outer vertical folding grooves are formed along the vertical direction of the bag body, which lacks design. Furthermore, when the bag is folded horizontally along the pleats and then rolled vertically to make it more compact, the fabric of the bag becomes warped and wrinkled, which impairs the aesthetic appearance and value of the bag, and the entire folding process, including the process of rolling the bag, is cumbersome and time-consuming, resulting in a lack of convenience.

[0005] SUMMARY OF THE PRESENT DISCLOSURE An object of the present invention is to provide a bag that is compactly foldable while having an attractive design, a manufacturing method thereof, and a bag manufacturing tool. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the first aspect of the present invention is A bag-shaped main body made of a fabric in which convex folds and concave folds are repeatedly formed at approximately equal intervals; A grip portion extending from the main body; a holding portion that holds the main body folded along the convex folds and the concave folds in a rolled state along its longitudinal direction; The present invention provides a bag comprising:

[0007] In the bag of the present invention having the above-mentioned configuration, it is preferable that the convex folds and the concave folds are inclined with respect to the up-down direction of the main body when viewed from a direction substantially perpendicular to the main surface of the main body.

[0008] In addition, in the bag of the present invention having the above-mentioned configuration, it is preferable that the convex folds and the concave folds are periodically and repeatedly curved (e.g., approximately S-shaped) when viewed from a direction approximately perpendicular to the main surface of the main body.

[0009] In addition, the second aspect of the present invention is A step of folding a body made of a bag-shaped fabric to repeatedly form convex folds and concave folds at approximately equal intervals in the body; a step of wrapping the folded body along the convex folds and the concave folds around a cylindrical body and shaping the body; The present invention provides a method for manufacturing a bag, comprising:

[0010] The manufacturing method of the bag of the present invention having the above-mentioned configuration preferably further includes a step of clamping the folded main body with a long guide to form a laminate, and the shaping step preferably includes wrapping the laminate around the cylindrical body.

[0011] It is preferable that the manufacturing method of the bag of the present invention having the above-mentioned configuration further includes a step of folding back the folded body at approximately the center in the longitudinal direction, and that the shaping step includes wrapping the folded body around the cylindrical body.

[0012] In addition, a third aspect of the present invention is a guide including a long piece of paper that holds the bag body folded along the convex folds and the concave folds; a cylindrical body around which the folded bag body and the laminate of the guides are wound; The present invention provides a bag manufacturing tool comprising:

[0013] In the bag manufacturing tool of the present invention having the above-mentioned configuration, it is preferable that the guide holds the bag body in a state where it is folded back approximately at the center in the longitudinal direction. Effect of the Invention

[0014] According to the present invention, it is possible to provide a foldable bag that combines designability and compactness, a manufacturing method thereof, and a bag manufacturing tool. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view showing an outline of a bag 1 according to a representative embodiment of the present invention. [Diagram 2]1A to 1C are a front view, a rear view, a right side view, a left side view, a top view and a bottom view of the bag 1. [Diagram 3] FIG. 1 is a perspective view showing an outline of a bag 1 in a stored state. [Figure 4] 1A to 1C are a front view, a rear view, a right side view, a left side view, a top view and a bottom view of the bag 1 in a stored state. [Diagram 5] FIG. 2 is a perspective view showing the bag 1 in the process of transitioning from a stored state to an unfolded state. [Figure 6] FIG. 2 is a perspective view showing the bag 1 in the process of transitioning from a stored state to an unfolded state. [Figure 7] This figure shows a main body 3 having convex folds 41 and concave folds 43 formed thereon, a main body 3 folded along the convex folds 41 and concave folds 43, and a main body 3 folded back near the center. [Figure 8] FIG. 2 is a schematic diagram of a bag-making tool 9. [Figure 9] 13 is a diagram showing how a laminate of the folded main body 3 and the guide 91 is wrapped around a cylindrical body 93. FIG. [Figure 10] 13 is a diagram showing a state in which a laminate of the folded main body 3 and the guide 91 is wrapped around and held by a cylindrical body 93. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] A bag according to a representative embodiment of the present invention, its manufacturing method, and bag manufacturing tool will be described in detail below with reference to the drawings. Note that the drawings are for the purpose of conceptually explaining the present invention, and therefore, for ease of understanding, dimensions, ratios, or numbers may be exaggerated or simplified as necessary, and the present invention is not limited thereto.

[0017] 1. Bag 1 composition A bag 1 according to this embodiment will be described with reference to FIGS. The bag 1 includes a bag-shaped main body 3. The illustrated bag 1 is a tote bag, but may be any other type of bag.

[0018] The main body 3 is sewn at the bottom and sides and is open upwards. The main body 3 is composed of roughly rectangular pieces of fabric 31, 33, and when nothing is placed inside, the pieces 31, 33 overlap to form a thin layer, so that the main surface is roughly flat. For the sake of convenience, the piece 31 is placed on the front side and the piece 33 is placed on the back side (see Figs. 2(A) and (B)), but the arrangement of the pieces 31, 32 is not limited to this. The fabrics 31, 33 may be made of natural or synthetic fibers, but from the standpoint of durability and the formation and maintenance of the folds (convex folds 41 and concave folds 43) described below, it is preferable for them to be made of synthetic fibers such as polyester.

[0019] The main body 3 has convex folds 41 and concave folds 43 formed thereon (see, for example, Figs. 1 and 7(A)). The convex folds 41 are folds formed so as to protrude outward from the main body 3 (or in a mountain shape), and the concave folds 43 are groove-shaped (or valley-shaped) folds located between the convex folds 41. Note that the positions of the convex folds 41 and the concave folds 43 are interchanged in the fabrics 31 and 33, and the convex folds 41 on the fabric 31 correspond to the concave folds 43 on the fabric 33, and conversely, the concave folds 43 on the fabric 31 correspond to the convex folds 41 on the fabric 33 (see Figs. 2(A) and (B)).

[0020] The convex folds 41 and the concave folds 43 are repeatedly formed in the left-right direction of the main body 3. Moreover, the convex folds 41 and the concave folds 43 are repeatedly formed at approximately equal intervals. Therefore, these folds can be considered as so-called pleats.

[0021] Therefore, the bag 1 can be folded to approximately the same width according to the convex folds 41 and the concave folds 43. Alternatively, it may be said that the bag 1 can be folded along the pleats.

[0022] The convex folds 41 and the concave folds 43 are preferably inclined at an angle θ within a predetermined range with respect to the up-down direction of the bag 1 when viewed from a direction perpendicular to the main surface of the main body 3 (i.e., the front side and the back side) (see FIG. 7(A)). The convex folds 41 and the concave folds 43 may be substantially straight, or may be curved in a wavy or substantially S-shape (i.e., periodically and repeatedly) as shown in the figure. In other words, the angle θ may vary within a predetermined range.

[0023] This not only enhances the design of the bag 1, but also avoids warping and wrinkles that may occur when the fabric 31, 33 having folds (pleats) of a certain width or thickness is rolled up, creating a beautiful outer surface for the bag 1. In other words, by forming folds diagonally to the length direction of the fibers (warp and weft) that make up the fabric 31, 33, a so-called "inner loop difference" or room for deformation (play) is generated between both edges of the folds when the fabric 31, 33 is rolled up, effectively suppressing or cushioning warping and wrinkles. In other words, the fact that the woven fabric is more easily deformed in the diagonal direction than in the fiber direction is utilized to prevent warping and wrinkles. As a result, the bag 1 folded along the convex folds 41 and the concave folds 43 is wavy (see FIG. 7(B)). This allows the bag 1 made of a fabric of a certain thickness to be rolled up easily without warping or wrinkles.

[0024] The bag 1 is held in a state (stored state) in which the main body 3 folded along the convex folds 41 and the concave folds 43 is rolled up along its longitudinal direction (see Figs. 5 and 6). In other words, the bag 1 folded along the pleats can be rolled up and held in the rolled up state. This allows the bag 1 to be compact and palm-sized.

[0025] The folded main body 3 is substantially belt-shaped (see Figs. 6(A) to (C)). The main body 3 in this state may be folded in two in the middle of its longitudinal direction and rolled up in the folded state along the longitudinal direction (see Figs. 5(A) to (C)).

[0026] Bag 1 also includes a handle 5 extending from body 3 (see, for example, Figures 1 and 2). The gripping portion 5 extends from the upper end of the side of the main body 3 and is connected at its tip to form a handle. In this embodiment, the gripping portion 5 is made of a material separate from the main body 3, but the gripping portion 5 may be formed integrally with the main body 3.

[0027] The bag 1 includes a holding portion 7 that holds the main body 3 in a stored state. The retaining portion 7 is, for example, a button, but may also be a hook-and-loop fastener or an elastic band.

[0028] In the illustrated example, a button is attached as the holding part 7 (see, for example, Figs. 3 and 5(A)). The holding parts 7 are provided at the tip and base ends of the grip part 5 (see Figs. 2(C) and (D)), and face each other when the bag 1 is in the stored state, and can be detachably fitted together.

[0029] Therefore, in the bag 1 of this embodiment, the pleats (convex folds 41 and concave folds 43) are formed diagonally when viewed from the front and back, and the pleats are approximately S-shaped, making it highly design-oriented (see, for example, Figures 1, 2 and 7).

[0030] The bag 1 is folded along the pleats and then rolled (see, for example, Figs. 5 and 6). That is, the folded bag 1 is folded back near the center in the longitudinal direction and rolled (rolled) around the folded back part. At this time, since the pleats are formed obliquely with respect to the fibers of the fabrics 31, 33, the folded bag 1 can be easily rolled up. The rolled bag 1 is then held in the rolled state by the holding part 7 provided on the grip part 5 (or the main body 3). This allows the bag 1 to be stored and carried compactly.

[0031] Conversely, when using the bag 1, the holding portion 7 is released and the bag is unwound. Then, the folded main body 3 is roughly straightened, and the folded bag 1 is opened to spread the grip portion 5. This makes it possible to easily use the bag 1.

[0032] 2. Manufacturing method of bag 1 An example of a process for manufacturing the bag 1 will be described with reference to FIGS. Two roughly rectangular pieces of fabric are prepared. These pieces of fabric are cut out according to the pattern, and the bottom and both sides are sewn together. This forms the bag-shaped main body 3. At this time, the fabric may be cut with its fibers tilted at a specified angle θ from the top-bottom (or left-right) direction of the pattern.

[0033] Next, folds are formed in the main body 3 . That is, convex folds 41 and concave folds 43 are formed in the main body 3 (see FIG. 7(A)). At this time, a known method such as hand pleating can be used so that the convex folds 41 and concave folds 43 are inclined with respect to the up-down direction of the main body 3 and are arranged at approximately equal intervals.

[0034] In hand pleating, a set of patterns is prepared with peaks and valleys corresponding to the pleats in advance. The fabric is then sandwiched between the straightened patterns, and the peaks and valleys are woven in by hand from the edge to form the pleats. This creates a pleated pattern or shape in the main body 3, which is made of a single piece of fabric, and also makes it possible to fold and unfold the main body 3 along the pleats (see Figure 7(B)). This makes it easier to construct the main body 3 than to form the fabric by combining multiple pleated pieces.

[0035] Next, the main body 3 is folded along the pleats to give a curl to the folded main body 3. In this embodiment, the main body 3 is given a curl using a bag-making tool 9, but the present invention is not limited to this.

[0036] Now, the bag-making tool 9 will be described with reference to FIGS. The bag-making tool 9 is a tool for imparting a curl to the main body 3 of the bag 1, and includes a guide 91 and a cylindrical body 93.

[0037] The guide 91 holds the folded main body 3 and thereby gives a curl or shape to the main body 3. The guide 91 includes long pieces of paper 91A and 91B (FIGS. 8(A) and (C)).

[0038] The piece of paper 91A has a rod 91C with a predetermined diameter at its tip. The folded main body 3 is folded back around the rod 91C with a radius of curvature equal to or greater than a predetermined value, thereby preventing the main body 3 from bending or wrinkling at the folded back portion around the rod 91C. As mentioned above, bending or wrinkling on the main body 3 mars the appearance of the bag 1, so preventing unintended bending or wrinkling improves the appeal of the bag 1. Furthermore, by folding the folded main body 3 back around the rod body 91C, the user does not have to do much work to wind the folded main body 3, and can more easily compact the main body 3. Note that in this embodiment, the folded main body 3 is folded back once, but if the size of the main body 3 is large, for example, the folded main body 3 may be folded back two or more times, which further simplifies the user's work of winding the main body 3.

[0039] Piece of paper 91B is placed so as to cover both sides of piece of paper 91A, and therefore piece of paper 91B is approximately twice as long as piece of paper 91A. The length of the piece of paper 91A is greater than the length of the folded main body 3. The widths of the pieces of paper 91A and 91B are generally the same, and may be equal to or greater than the width of the folded main body 3.

[0040] The tubular body 93 has a substantially cylindrical shape (see FIG. 8(B)), and its axial length (or width) is approximately the same as or larger than the width of the folded main body 3 (or the laminated body composed of the folded main body 3 and the guide 91). The outer diameter of the tubular body 93 is approximately the same as or slightly larger than the outer diameter of the rolled (stored) bag 1.

[0041] The bag-making tool 9 may include a band 94 that holds the laminate wound around the cylindrical body 93 on the cylindrical body 93 (see, for example, FIG. 10(C)). As the band 94, a stretchable band such as a rubber band is preferably used, but is not limited to this.

[0042] Therefore, by inserting the folded main body 3 between the pieces of paper 91A and 91B, the folded main body 3 is sandwiched by the long guide 91 in a state where it is folded back at approximately the center in the longitudinal direction. That is, the guide 91 holds the main body 3 of the bag 1 in a state where it is folded back at approximately the center in the longitudinal direction (see, for example, FIG. 9(A)). Note that the tip of the piece of paper 91A may be secured with an elastic band 91D to prevent the folded position of the main body 3 from shifting. In this manner, in this embodiment, the folded main body 3 is sandwiched between the long guides 91 to form a laminate of the folded main body 3 and the guides 91.

[0043] Next, the laminate of the main body 3 and the guide 91 is wound around the outer periphery of the cylindrical body 93 (FIGS. 9B, 9C, 10A, 10B). At this time, the folded laminate may be wound around the cylindrical body 93. Finally, the outer circumferential surfaces of the main body 3 and the guide 91 (laminate) wrapped around the cylindrical body 93 are bound with an elastic band 94, so that the main body 3 is given a shape or shape.

[0044] The grip part 5 and the holding part 7 are attached to the main body 3 thus shaped, and the bag 1 is completed (see, for example, FIG. 1). Note that the grip part 5 and the holding part 7 may be attached before the main body 3 is shaped.

[0045] Although a representative embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and various design modifications are possible, and all such modified design aspects are included in the technical scope of the present invention. [Explanation of symbols]

[0046] 1 bag 3. Main unit 5 Gripping part 7 Holding part 9 Bag making tools 31,33 Fabric 41 Convex fold 43 Concave fold 91 Guide 93 Cylinder

Claims

1. A bag-shaped main body made of a fabric in which convex folds and concave folds are repeatedly formed at approximately equal intervals; A grip portion extending from the main body; A holding portion; Equipped with The convex fold and the concave fold are inclined with respect to the up-down direction of the main body when viewed from a direction substantially perpendicular to the main surface of the main body, The main body is folded along the convex creases and the concave creases, and the main body in the folded state is rolled up along its longitudinal direction into a rolled state; the holding portion holds the folded state and the rolled state; A bag featuring.

2. A bag-shaped body made of a fabric in which convex folds and concave folds are repeatedly formed at approximately equal intervals; A grip portion extending from the main body; A holding portion; Equipped with The convex folds and the concave folds are periodically and repeatedly curved when viewed from a direction substantially perpendicular to a main surface of the main body, The main body is folded along the convex creases and the concave creases, and the main body in the folded state is rolled up along its longitudinal direction into a rolled state; the holding portion holds the folded state and the rolled state; A bag featuring.

3. A bag-shaped body made of a fabric in which convex folds and concave folds are repeatedly formed at approximately equal intervals; A grip portion extending from the main body; A holding portion; Equipped with The convex folds and the concave folds are inclined with respect to the up-down direction of the main body when viewed from a direction substantially perpendicular to the main surface of the main body and are periodically and repeatedly curved, The main body is folded along the convex creases and the concave creases, and the main body in the folded state is rolled up along its longitudinal direction into a rolled state; the holding portion holds the folded state and the rolled state; A bag featuring.

Images