JP2012201407A - Flexible container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tough flexible container that prevents a joint part between an upper surface of an outer bag and an outer bag supply cylinder from being torn even when a flexible container body falls down.SOLUTION: The flexible container is formed of a long bag body made of a flexible sheet member, is provided with a filling material supply path having one end as a supply port formed on the apex of the bag, and is provided with a discharge port formed on the bottom part of the bag. An upper surface opening part is disposed on the upper surface of the bag body. The filling material supply path is inserted into the upper surface opening part. The end part of the filling material supply path and the upper opening part are sewed to each other on the outer circumferential part outside the edge part of the opening part and, as a result, the upper surface opening part is reinforced on the edge part.

Description

  The present invention relates to a flexible container, and more particularly, to a flexible container that can prevent a container from tearing in advance even if the flexible container of a granular load falls.

  Conventionally, a large number of flexible containers have been used as a means for transporting and storing powder and the like, and their weight is light. As shown in FIG. 8, for example, the flexible container 60 in Patent Document 1 includes an outer bag 62 and an inner bag 80. On the upper surface of the outer bag 62, an outer bag charging cylinder 64 for raw materials and the like is provided. The outer bag charging cylinder 64 is narrower in diameter than the diameter of the outer bag 62. The outer bag throwing cylinder 64 can be sealed by binding with a rope 66 or a string made of PP or the like. A plurality of blade lids 68 are arranged at the base of the outer bag throwing cylinder 64 so as to bind one side of the blade lid, and one binding rope 70 is inserted into each blade lid.

  FIG. 9 (1) shows a state in which the flexible container configured as described above is almost full of powder particles. That is, the powder is packed in the inner bag 80, and the outer bag charging cylinder 64 is provided on the upper surface of the outer bag 62.

Japanese Patent Laid-Open No. 2005-22736

  By the way, the bottom surface of the flexible container loaded with powder particles is not completely flat. For this reason, when it is placed in a self-supporting state, it may fall or fall over when it comes in contact with other flexible containers or heavy machinery, or when it is transported by ship in two or three stages. (Fig. 9 (2)). When falling or overturning, a large amount of the granular material packed in the bag flows out to the outside of the bag in an attempt to flow out of the bag. At this time, since the powder container flows out and the flexible container body falls, the charging cylinder comes into contact with the floor surface in the state where the powder particles are contained, and stress is applied to the joint between the upper surface of the outer bag 62 and the charging cylinder. In addition, the joint will eventually break. When this joint part breaks, the granular material flows out to the outside, and the flexible container is broken, causing serious damage to both the contents and the container. There are cases where the thread of the sewn portion of the joint is cut, the end of the bag is torn, and the end of the charging cylinder is torn.

  An object of the present invention is to provide a tough flexible container in which the joint between the upper surface of the bag and the charging cylinder does not tear even if the flexible container body falls or falls.

  The flexible container which concerns on this invention forms the bag main body which consists of a flexible sheet | seat member, provides the cylindrical filling inlet cylindrical part in the top part of the said bag, and uses the bottom part of the said bag as a discharge port. An upper surface opening is provided on the upper surface of the bag body, and the filling material inlet cylindrical part is inserted into the upper surface opening part, and an end of the filling material inlet cylindrical part and the upper surface opening part It is sewn on the outer peripheral portion outside the edge portion, and the upper surface opening is reinforced at the edge portion.

  In the method for manufacturing a flexible container according to the present invention, a bag body made of a flexible sheet member is formed, a cylindrical filling inlet cylindrical portion is provided at the top of the bag, and the bottom of the bag is discharged. In the method of manufacturing a flexible container as an outlet, a step of providing an upper surface opening on the upper surface of the bag body, a step of inserting the filler inlet cylindrical portion into the upper surface opening, and a filler inlet cylindrical shape And a step of sewing on the outer peripheral portion outside the edge portion of the upper surface opening portion.

  By practicing the present invention, even if the flexible container body falls, the joint between the upper surface of the outer bag and the outer bag charging cylinder does not tear.

  That is, in a flexible container in which a bag body made of a flexible sheet member is formed, a cylindrical filling inlet cylindrical portion is provided at the top of the bag, and a bottom portion of the bag is a discharge port. An upper surface opening is provided on the upper surface, and the filler inlet cylindrical portion is inserted into the upper surface opening, and is located outside the edge of the filler inlet cylindrical portion and the edge of the upper surface opening. By being sewn at the outer peripheral portion, stress can be prevented from being directly applied to the edge of the upper surface opening by applying the stress to the outer peripheral portion outside the edge of the upper surface opening. This prevents the joint between the upper surface and the outer bag throwing cylinder from tearing.

  Further, the edge of the upper surface opening is reinforced so that the edge of the upper surface opening is torn by the stress applied to the outer peripheral portion outside the edge of the upper surface opening. It becomes easy to prevent by reinforcement of a part.

It is a side view of the 1st Example of the flexible container which concerns on this invention. It is a top view of the 1st example of the flexible container concerning the present invention. It is an upper surface enlarged view of the 1st Example of the flexible container which concerns on this invention. It is an upper surface enlarged view of the 1st Example of the flexible container which concerns on this invention. It is upper surface AA sectional drawing of FIG. 2 of the 1st Example of the flexible container which concerns on this invention. It is a top view of the 2nd example of the flexible container concerning the present invention. It is a top view of the 3rd example of the flexible container concerning the present invention. It is a block diagram of the conventional flexible container. It is a block diagram of the conventional flexible container, Comprising: (1) The state diagram in which the flexible container is arrange | positioned normally, (2) The state diagram in which the flexible container has fallen for some reason is shown.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. Note that in all the drawings described below, the same components are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  FIG. 1 shows a side view of Embodiment 1 of the present invention.

  The main body 2 of the flexible container is provided with a filling inlet 4 for filling granular storage items at the top of the flexible container main body 2 formed into a substantially columnar bag shape using a sheet material, and the flexible container main body 2 A filling material discharge port 6 for discharging the stored material filled in the flexible container main body 2 is provided at the bottom of the container.

  The filling material inlet 4 is a portion for injecting the contents, and is filled with an upper portion 5 of the filling material inlet passage 5 that allows the injected material to pass through and is folded after the injection to shield the filling material inlet 4. After 5 is folded, the lower part 14 of the filling material input path is connected to the upper part 5 of the charging material input path. The upper lid 8 is connected to the base of the lower portion 14 of the filling material passage 14 and is formed in a plate shape larger than the whole filling material inlet 4 so as to shield the filling material inlet 4. In addition, an input port binding string 18 is provided on the side surface of the member so as to bind the filler input path upper portion 5.

  Furthermore, about 2 to 4 suspension strings 20 for suspending the flexible container body 2 are arranged above the side portions of the flexible container body 2.

  A suspension belt 24 is provided at the upper end of the side surface of the main body 2, the suspension fitting 22 and the belt curling stop 26 are connected, and a pocket 28 is disposed in the belt curling stop 26.

  On the other hand, the filler discharge port 6 is provided to open at the end of the discharge opening member 7 which is the lower side portion of the flexible container body 2. A plurality of closing cloths 10 are provided on the side surface of the discharge opening member 7 and arranged in a chrysanthemum shape so as to be shielded after the discharge opening member 7 is folded. A rope 34 is slidably provided at the distal end portion of the closing cloth 10 so that the closing cloth 10 can be opened and closed. Moreover, the discharge port binding string 32 is provided on the side surface of the member so as to bind the discharge opening member 7. After the discharge opening member 7 is folded outside the closing cloth 10, the lower cover 12 is formed in a circular plate shape that is larger than the entire filling outlet 6 and shields the filling outlet 6.

  FIG. 2 shows a top view in which the upper surface 36 of the flexible container body 2 is drawn. A circular upper surface opening 9 is opened at the center of the upper surface 36. An insertion port reinforcing tape 42 is sewn in a circular shape over the circumference of the opening edge. An upper lid 8 is provided on the upper lid 8 so as to shield the upper surface opening 9. The upper lid 8 and the upper surface 36 are fixed to each other by a plurality of surface fasteners 11 and 44 arranged to face each other.

  FIG. 3 shows an enlarged top view in which the filling material introduction path is drawn out from the top surface opening 9. The filling material input path is composed of an upper filling material input path 5 made of a thin material that can be folded easily and a lower filling material input path 14 made of a thick material having strength. The upper part 5 of the filling material input path is connected to the lower part 14 of the charging material input path, but the lower part 14 of the charging material input path and the upper surface opening 9 are not connected. It penetrates into the opening 9 and is sewn to the upper surface 36 at the sewn portion 46. Therefore, the stress generated when the flexible container main body 2 falls and the end of the lower portion 14 of the filling material is in contact with the floor surface is applied to the sewn portion 46 and directly connected to the edge of the upper surface opening 9. Therefore, no stress is applied to the edge of the upper surface opening 9. Therefore, tearing of the edge part of the upper surface opening 9 can be prevented.

  Further, an insertion port reinforcing tape 42 is sewn on the edge of the upper surface opening 9 over the entire circumference as shown in FIG. For this reason, even if the sewing portion 46 is torn, the crack does not advance to the edge of the upper surface opening 9 and tear. On the contrary, since the edge portion of the upper surface opening 9 is not torn, the edge portion of the upper surface opening 9 is not torn and the sewn portion 46 is not torn.

  FIG. 4 shows an enlarged top view in which the filling material introduction path upper portion 5 is folded in the upper surface opening 9. By folding the upper part 5 of the filling material introduction path, the upper surface opening 9 can be accommodated.

  FIG. 5 shows a cross-sectional view of the upper surface AA of FIG. 2 of the flexible container according to the present invention. As shown in FIG. 3, the upper surface 36 is sewn at the end of the filling material input path lower portion 14 and the sewing portion 46, but is separated from the end of the upper surface 36, not the end of the upper surface 36. Sewn at the point. Thereby, interference between the sewn portion 46 and the end portion of the upper surface 36 can be reduced.

  On the other hand, an insertion port reinforcing tape 42 is sewn to the end of the upper surface 36. By this insertion port reinforcing tape 42, the strength against tearing of the end portion of the upper surface 36 is remarkably improved. For this reason, the intensity | strength with respect to the stress added to the edge part of the upper surface 36 and the filling material input path lower part 14 is strengthened.

  By shifting the position of the sewing portion 46 from the end portion of the upper surface 36, the strength is improved compared to the case where the end portion of the upper surface 36 and the end portion of the filling material input path lower portion 14 are directly sewn. The strength is further improved by sewing the insertion port reinforcing tape 42 at the end.

  In the present invention, the insertion port reinforcing tape 42 is used. However, in order to improve the strength, it is preferable to increase the thickness of the end portion of the upper surface 36, and it is possible to reinforce even if another material is used.

  FIG. 6 shows a top view in which the top surface 36 of the flexible container body 2 is drawn. A circular upper surface opening 9 is opened at the center of the upper surface 36. A film thickness portion 50 formed thicker at the opening edge than the other PP is sewn in a circle over the entire circumference. Further, a hexagonal upper lid 8 is provided so as to shield the upper surface opening 9, and is fixed by a plurality of surface fasteners 44 arranged to face the upper lid 8 and the upper surface 36. The film thickness portion 50 can improve the strength of the opening edge.

  FIG. 7 shows a top view in which the top surface 36 of the flexible container body 2 is drawn. A circular upper surface opening 9 is opened at the center of the upper surface 36. A synthetic belt 52 is sewn in a circular shape over the circumference of the opening edge. Further, a hexagonal upper lid 8 is provided so as to shield the upper surface opening 9, and is fixed by a plurality of surface fasteners 44 arranged to face the upper lid 8 and the upper surface 36. Further, the upper lid 8 is fixed with the fixing strings 38 and 40 from above. The film thickness portion 50 can improve the strength of the opening edge.

  As the material of the synthetic belt, polyester, nylon, canvas, leather belt, tarpaulin, synthetic leather belt, or the like can be used. Moreover, the shape of the cylindrical portion may be any of a rectangular cylinder shape, a cube shape, a rectangular parallelepiped shape, an elliptical column shape, a hexagonal column shape, and a polygonal shape, and the upper lid is also round, square, polygonal, rectangular Either oval or oval may be used.

2 Flexible container body 4 Filling material inlet 5 Lower portion of filling material passage 6 Filling material discharge port 7 Discharge opening member 8 Upper lid 9 Upper surface opening 10 Closure cloth 11 Fastener 14 Filling material lower portion 16 Injection hook 18 Input port binding string 20 Suspension string 22 Suspension bracket 24 Suspension belt 26 Belt tucking stop 28 Pocket 30 Suspension part 32 Drainage port tie string 34 Rope 36 Upper surface 38, 40 Fixed string 42 Input port reinforcement tape 46 Sewing part 60 Flexible container 62 Outer bag 64 Outer bag injection Cylinder 66 Rope 68 Feather lid 70 Bundling rope 80 Inner bag 88 Joint

Claims (5)

In the flexible container which forms the elongate bag main body which consists of a flexible sheet | seat member, and provides the filling input path which one end becomes an input port in the top part of the said bag, and the bottom part of the said bag provides the discharge port, The said bag main body An upper surface opening is provided on the upper surface of the container, the filling material introduction path is inserted into the upper surface opening, and the end of the filling material introduction path and the upper surface opening are located outside the edge of the opening. Sewn on the outer periphery,
The flexible container, wherein an edge of the upper surface opening is reinforced.   The flexible container according to claim 1, wherein the filling material input path is composed of a plurality of materials, and one of the materials is a material with enhanced strength.   The flexible container according to claim 1, wherein an edge of the upper surface opening is reinforced with an insertion port reinforcing tape.   In the method for manufacturing a flexible container, a long bag body made of a flexible sheet member is formed, and a filling material introduction path with one end serving as an input port is provided at the top of the bag, and the bottom of the bag is used as a discharge port. A step of providing an upper surface opening on the upper surface of the bag body, a step of inserting the filling material introduction path into the upper surface opening, and an end of the filling material introduction path outside the edge of the upper surface opening. The manufacturing method of a flexible container including the process of sewing on an outer peripheral part.   The method for manufacturing a flexible container according to claim 4, further comprising a step of reinforcing an edge of the upper surface opening.

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