Large bag and method for forming large bag

Abstract

To provide a large bag body and a forming method of a large bag body which does not use a formwork and can improve use value as a structure.SOLUTION: In a forming method of a large bag body in which a plurality of small bag bodies B filled with filling materials is stored to form a large bag body A, the small bag bodies B are arranged on the large bag body A placed on a placement surface 1 so as to avoid a central part of the large bag body A. After arranging, a net-like member at the central part of the large bag body A is pulled upward, an opening of the large bag body A is closed around the pulled-up net-like member.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a large bag and a method for forming the large bag, and more particularly to a large bag and a method for forming the large bag that do not require a frame and can improve the utility value of the large bag as a structure. [Background technology]

[0002] The applicant of the present invention previously disclosed a method for forming a bag containing a filling material and a bag containing a filling material (Patent Document 1). This method for forming a bag containing a filling material is a method for forming a bag containing a filling material (B) by filling the inside with a filling material (1), and includes a net body (2) formed of a mesh member with no stiffness, which has openings (2A), (2B) at one end (2X) and the other end (2Y) and connects the opening (2A) at one end (2X) to the opening (2B) at the other end (2Y), and this net body (2) is tightly fastened so that the opening (2A) at one end (2X) and the opening (2B) at the other end (2Y) face each other. When stretched, it forms a cylindrical shape, and one end (2X) of the net body 2 is supported so as to be exposed to the outside through an opening (2B) at the other end (2Y) of the net body (2), and the opening at the other end (2Y) of the net body (2) is expanded and supported by a frame body (5). Thereafter, the filling material (1) is filled through the opening (2B) at the other end (2Y) of the net body (2), and after filling, the opening (2B) at the other end (2Y) of the net body (2) is closed with a tying rope (3) to form a bag body (B) containing the filling material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication 2018-168595 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if the frame (5) is not used, the filling material gets in the way, making it impossible to remove "one end (2X) of the net body 2" for pulling up the bag containing the filling material.

[0005] SUMMARY OF THE PRESENT EMBODIMENTS The present invention aims to provide a large bag and a method for forming a large bag, which have been made in consideration of the above circumstances. [Means for solving the problem]

[0006] The method for forming a large bag according to claim 1 is a method for forming a large bag by storing a plurality of small bags filled with a filling material therein, Without using a frame, A plurality of the small pouches are arranged on the large pouch placed on a placement surface, the small pouches being arranged so as to exclude a central portion of the large pouch; After placement, the mesh member in the center of the large bag is pulled upward, and the opening of the large bag is closed around the pulled-up mesh member.

[0007] A method for forming a large bag according to claim 2 is the method for forming a large bag according to claim 1, in which the small bags are in use or have been used in rivers, seashores, etc.

[0008] The large bag described in claim 3 is a large bag formed by storing a plurality of small bags filled with a filling material therein, a central mesh portion formed by pulling upward a mesh member at the center of the large bag on which the small bag is placed so as to form a void outside the center of the bottom of the large bag; a peripheral portion that is formed by gathering the periphery of the large bag body around the central net portion so as to close the opening of the large bag body; a binding member that binds the peripheral portion and the central mesh portion, Without using a frame, A plurality of the small pouches are stored in a recess in the large bag that is formed by pulling upward the mesh member in the central portion of the large bag on which the small pouches are placed.

[0009] The large bag described in claim 4 is the large bag described in claim 3, in which the small bags are in use or have been used in rivers, seashores, etc. Effect of the Invention

[0010] According to the method of forming a large bag as recited in claim 1, a central mesh portion is formed by pulling upward the mesh member at the central part of the large bag on which a pouch is placed so that a space is formed outside the central bottom of the large bag, and a plurality of pouches are stored in recesses of the large bag formed by pulling upward the mesh member at the central part of the large bag on which the pouch is placed. Therefore, the position of the mesh member at the central part of the large bag is not obstructed by the filling material and the mesh member at the central part of the large bag can be pulled upward. As a result, a large bag containing a plurality of pouches formed from a mesh member filled with filling material can be formed without using a conventional frame. Moreover, because the plurality of pouches are stored in the recesses of the large bag in a restrained state, the pouches are prevented from moving within the recesses of the large bag and deformation of the large bag is reduced, improving the value of use as a structure.

[0011] Furthermore, according to the method for forming a large bag as set forth in claim 2, in addition to the effects of the invention as set forth in claim 1 described above, small bags that are in use or have been used can be reused rather than discarded, and because no formwork is used for small bags that are in use or have been used, they can be reinforced with the mesh member of the large bag at the site where they are used.

[0012] According to the large bag of claim 3, a central mesh portion is formed by pulling upward the mesh member at the center of the large bag on which the small pouches are placed so that a space is formed outside the center of the bottom of the large bag, and a plurality of the small pouches are stored in recesses of the large bag formed by pulling upward the mesh member at the center of the large bag on which the small pouches are placed. Therefore, the position of the mesh member at the center of the large bag is not obstructed by the filling material and the mesh member at the center of the large bag can be pulled upward. As a result, a large bag containing a plurality of small pouches formed from a mesh member filled with filling material can be formed without using a conventional frame. Moreover, because the plurality of small pouches are stored in the recesses of the large bag in a restrained state, the small pouches are prevented from moving within the recesses of the large bag and deformation of the large bag is reduced, improving the value of use as a structure.

[0013] According to the large bag described in claim 4, in addition to the effects of the invention described in claim 3, The pouch body in use or after use can be reused without being discarded, and since no frame is used for the pouch body in use or after use, the pouch body can be reinforced with the net-like member of the large pouch body at the site of use. [Brief description of the drawings]

[0014] [Figure 1] 1 to 6 show the manufacturing and testing process of a method for forming a large bag according to an embodiment of the present invention. FIG. 1 is a photograph of a large bag placed on a support surface. [Diagram 2] FIG. 2 is a photograph showing a state in which a plurality of small pouches (three pouches) are placed on the large pouch of FIG. 1, excluding the central portion of the large pouch. [Diagram 3] FIG. 3 is a photograph showing the process of covering the small pouch with the large pouch of FIG. [Figure 4] FIG. 4 is a photograph showing the opening of the large bag of FIG. 3 closed with a binding member. [Diagram 5] FIG. 5 is a photograph taken when the large bag shown in FIG. 4 is about to be pulled up. [Figure 6]FIG. 6 is a photograph showing the large bag shown in FIG. 4 after it has been pulled up. [Figure 7] FIG. 7 is a schematic cross-sectional view of the larger bag from which the smaller pouches within the larger bag of FIG. 6 have been omitted. [Figure 8] 8 to 13 show, by way of a model, a method for forming a large bag according to one embodiment of the present invention. FIG. 8 is a photograph of a large bag with one end of a cylindrical shape closed. [Figure 9] FIG. 9 is a photograph of the large bag of FIG. 8 and three small bags. [Figure 10] FIG. 10 is a photograph of the large bag of FIG. 9 after it has been unfolded and three small bags have been placed inside the unfolded large bag. [Figure 11] FIG. 11 is a photograph showing the three small pouches of FIG. 10 being covered with a large pouch. [Figure 12] FIG. 12 is a photograph of the large bag of FIG. 11 with the opening closed. [Figure 13] FIG. 13 is a photograph of the back side of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] A large bag and a method for forming the large bag according to an embodiment of the present invention will be described with reference to FIGS. The large bag A of the present invention contains a number of small bags B filled with filling material inside, and the large bag A and small bags B with a number of small bags B installed together cover and protect the slopes of the ground on riverbanks and coasts.

[0016] The small bag B is a mesh bag made of synthetic fiber filled with a filling material such as boulders or broken granite. The weight of the filling material filled in pouch B is, for example, 1t to 8t. When it is 1t to 4t, the particle size is 50mm to the size of a human head, and when it is 6t or 8t, the particle size is about 150mm to the size of a human head.

[0017] A method for forming the large bag will now be described. A plurality of small pouches B are placed on large pouch A placed on placement surface 1 so as to exclude the central portion of large pouch A (FIGS. 1 to 2, 10). After placement, the net-like member in the center of the large bag A is pulled upward, and the opening of the large bag A is closed around the pulled-up net-like member. The opening of the large bag A is closed, for example, with a tying rope 12 (Figs. 3 to 6, 11 to 13).

[0018] According to the method of forming a large bag described above, the mesh member at the center of large bag A on which pouch B is placed is pulled upward to form central mesh portion 10 so as to form void 100 (FIGS. 7 and 13) outside the center of the bottom of large bag A, and a plurality of pouches B are stored in recess 11 of large bag A formed by pulling upward the mesh member at the center of large bag A on which pouch B is placed. Therefore, the position of the mesh member at the center of large bag A is not obstructed by the filling material and the mesh member at the center of large bag A can be pulled upward. As a result, large bag A containing a plurality of pouches B formed from a mesh member filled with filling material therein can be formed without using a conventional frame. Moreover, because the plurality of pouches B are stored in recess 11 of large bag B in a restrained state, movement of pouches B within recess 11 of large bag A is prevented, and large bag A is less deformed, improving its value as a structure.

[0019] In addition, the large bag body A may be, for example, the "mesh body (2) (mesh body of the large bag body A of the present invention)" disclosed in JP 2018-168595 A, which, when tensioned so that the opening (2A) at one end (2X) and the opening (2B) at the other end (2Y) face each other as shown in FIG. 1, may be a cylindrical or circular or rectangular shaped mesh body.

[0020] If we look at the structure of the large bag A, it looks like this: Large bag A comprises a central mesh portion 10 formed by pulling upward the mesh member of the central portion of large bag A on which small pouches B are placed so as to create a void 100 outside the central portion of the bottom of large bag A, a peripheral portion 13 formed by gathering the periphery of large bag A into the central mesh portion so as to close the opening of large bag A around this central mesh portion 10, and a binding member (e.g., a mouth-tying rope) 12 which binds this peripheral portion 13 and the central mesh portion 10, and a plurality of small pouches B are stored in recesses 11 of large bag A formed by pulling upward the mesh member of the central portion of large bag A on which small pouches B are placed.

[0021] Therefore, with the large bag A described above, the mesh member at the center of the large bag A on which pouches B are placed is pulled upward to form central mesh portion 10 so that void 100 is formed outside the center of the bottom of large bag A, and a plurality of pouches B are stored in recess 11 of large bag A formed by pulling upward the mesh member at the center of the large bag A on which pouches B are placed. Therefore, the position of the mesh member at the center of large bag A is not obstructed by the filling material and the mesh member at the center of large bag A can be pulled upward. As a result, large bag A containing a plurality of pouches B formed of a mesh member filled with filling material therein can be formed without using a conventional frame. Moreover, since the plurality of pouches B are stored in recess 11 of large bag A in a restrained state, the movement of pouches B within recess 11 of large bag A is prevented, and deformation of large bag A is reduced, improving the utility value of the large bag A as a structure.

[0022] Furthermore, particularly in cases where the small pouches B stored in the large pouch A are those currently in use or have been used in rivers, coasts, etc., the currently in use or used small pouches B can be reused rather than discarded, and since no formwork is used for the currently in use or used small pouches B, they can be reinforced with the mesh member of the large pouch A at the site where they are used. [Explanation of symbols]

[0023] A large bag body B Bag body 1 Placement surface 2. Second mesh thread 10 Central web 11 Recess 12 Binding material (e.g., tie rope) 13 Periphery 100 Vacant Space

Claims

1. A method for forming a large bag by storing a plurality of small bags filled with a filling material, the method comprising the steps of: arranging a plurality of the small pouches on the large pouch placed on a placement surface without using a frame, so as to exclude a central portion of the large pouch; After placement, the net member in the center of the large bag is pulled upward, and the opening of the large bag is closed around the pulled net member. A method for forming a large bag.

2. The pouches are in use or have been used in rivers, coastlines, etc.

2. The method of claim 1, wherein the large bag is formed by a method of forming the large bag.

3. A large bag body formed by storing a plurality of small bags filled with a filling material therein, a central mesh portion formed by pulling upward a mesh member at the center of the large bag on which the small bag is placed so as to form a void outside the center of the bottom of the large bag; a peripheral portion that is formed by gathering the periphery of the large bag body around the central net portion so as to close the opening of the large bag body; a binding member that binds the peripheral portion and the central mesh portion, Without using a frame, the plurality of small pouches are stored in a recess of the large bag formed by lifting up the mesh member in the center of the large bag on which the small pouches are placed. A large bag body characterized by:

4. The pouch is in use or has been used in rivers, coasts, etc.

4. The large bag according to claim 3.

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