JP2017008503A - Bag body for sandbag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag body for a sandbag in which the sealed housing of a housing material is possible and the bag body for the sandbag can be prevented from being damaged.SOLUTION: A bag body 10 for a sandbag of the present invention is used for the sandbag, and includes an inner bag body 1 for sealed housing of a housing material and an outer bag body 2 for housing the inner bag body 1. The inner bag body 1 is a multilayer structure disposed of an aluminum film between a pair of resin films. The bag body 10 for the sandbag is configured as follows: a tensile-strength of the inner bag body 1 in conformity with JIS-K7127 is 50.0 N/15 mm or more; a tension elasticity in conformity with JIS-K7127 is 400% or more; and a tear strength in conformity with JIS-K7128-3-A is 50.0 N/mm or more.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sandbag bag body used for a sandbag, and more particularly to a sandbag bag body capable of hermetically containing a stored item and preventing the sandbag bag body from being damaged.

  Sandbags are used in various places for civil engineering work on coasts, rivers, lakes, and ponds. Here, the sandbag is one in which earth and sand, stone, or the like is contained in a sandbag bag.

As such a sandbag bag, a sandbag for civil engineering (a sandbag for sandbag) in which a suspension belt is sewn to the basecloth bag body, and a stitched portion of the overlapping portion of the basecloth bag body is covered by the suspension belt. Is known (see, for example, Patent Document 1).
In addition, the base fabric bag body, a suspension belt having a sewing portion sewn on the base fabric bag body and a non-sewn portion not sewn on the base fabric bag body, and a non-sewn portion on the side surface of the base fabric bag body are bound and fixed. There is known a sandbag bag body including a binding belt, and the binding belt can be connected and fixed to an adjacent sandbag bag body (see, for example, Patent Document 2).

  By the way, in recent years, sandbag bags have been used not only for the civil engineering work described above, but also for applications that hermetically contain containers such as contaminated water, crushed pieces, contaminated soil, and defecation in addition to earth and sand and stone. Yes.

JP 2008-63767 A JP2013-241816A

However, although the sandbag bags described in Patent Documents 1 and 2 can accommodate the contents, the sealing property is not necessarily sufficient, and the contents may leak. In particular, materials that emit radiation must be more tightly sealed.
In addition, when a pointed object such as a stone or a broken piece is accommodated as an object to be stored, the sandbag bag may be damaged thereby.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a sandbag bag body that can contain a stored material as much as possible and prevent the sandbag bag body from being damaged. And

  The inventors of the present invention have intensively studied to solve the above problems, and have a double structure of an outer bag body and an inner bag body, and the inner bag body is a multilayer in which an aluminum film is disposed between a pair of resin films. It has been found that the above problems can be solved by setting the structure and the tensile strength, tensile elongation, and tear strength within a predetermined range, and the present invention has been completed.

  The present invention is (1) a sandbag bag body used for a sandbag, comprising: an inner bag body for hermetically housing a container; and an outer bag body for housing the inner bag body, Is a multilayer structure in which an aluminum film is disposed between a pair of resin films, and the tensile strength of the inner bag according to JIS-K7127 is 50.0 N / 15 mm or more, which conforms to JIS-K7127. It exists in the bag body for sandbags whose tensile elongation is 400% or more and whose tearing strength according to JIS-K7128-3-A is 50.0 N / mm or more.

  In the present invention, (2) the thickness of the inner bag body is 100 μm or more, the puncture strength according to JIS-Z1707 is 8.0 N or more, and the seal strength according to JIS-Z1707 is 40.0 N / 15 mm. It exists in the bag body for sandbags of the said (1) description which is the above.

  This invention exists in the bag body for sandbags as described in said (1) or (2) to which (3) resin films are polyethylene films and the edge part of these polyethylene films is welded mutually.

  In the present invention, (4) a reinforcing film is further disposed between the resin films, and the reinforcing film is a polyester film, a polyamide film, a polypropylene film, a polyvinylidene chloride film, a polyvinyl alcohol film, a polyvinyl chloride film, It exists in the bag for sandbags as described in any one of said (1)-(3) which is a polymethylpentene film, a polyacrylonitrile film, or a silica film.

  In the present invention, (5) a reinforcing film is further disposed between the resin films, and the reinforcing film is a polyester film, a polyamide film, a polypropylene film, a polyvinylidene chloride film, a polyvinyl alcohol film, a polyvinyl chloride film, It exists in the bag body for sandbags as described in any one of said (1)-(3) which is a multilayered structure which laminated | stacked the polymethylpentene film, the polyacrylonitrile film, or the silica film through the polyethylene film.

  This invention exists in the bag body for sandbags as described in any one of said (1)-(5) whose outer bag body is a textile fabric, a knitted fabric, or a braid | assembly made from polyester or a polypropylene.

  This invention exists in the bag body for sandbags as described in any one of said (1)-(6) in which the fixing | fixed part which fixes an inner bag body is provided in (7) outer bag body.

  The present invention provides (8) a sandbag for sandbag according to (7), wherein the fixing portion is an adhesive tape, the fixing portion is attached to the outer bag body by sewing, and is attached to the inner bag body by sticking. Exist.

  The present invention provides (9) the sandbag bag according to (7) or (8), wherein the fixing portion partially fixes the outer side surface of the inner bag body and the inner side surface of the outer bag body. Exist.

  This invention exists in the bag body for sandbags as described in any one of said (7)-(9) from which the inner bag body is detachable from the fixing | fixed part.

  This invention exists in the bag body for sandbags as described in any one of said (1)-(10) in which the volume of (11) inner bag body is larger than the volume of an outer bag body.

In the present invention, (12) the moisture permeability of the inner bag measured according to JIS-K7129 is 100 g / m ² · 24 h or less, and the oxygen permeability measured according to JIS-K7126 is 500 ml / m ² · 24 h. -It exists in the bag for sandbags as described in any one of said (1)-(11) which is below MPa.

  (13) The present invention further includes (13) a belt-like suspension belt for lifting the outer bag body, and the suspension belt is sewn on a side portion of the outer bag body. It exists in the sandbag for sandbags as described in one.

In the sandbag bag of the present invention, the double structure of the outer bag and the inner bag can provide sufficient strength as the sandbag itself. Thereby, it becomes possible to accommodate a large amount of things.
In addition, by making the inner bag body a multi-layer structure in which an aluminum film is disposed between a pair of resin films, the stored items can be more securely sealed and accommodated. Thereby, it is possible to prevent leakage of the contents and entry of moisture into the inside.
Furthermore, by setting the tensile strength, tensile elongation, and tear strength of the inner bag body within predetermined ranges, the sandbag bag body can be prevented from being damaged even when the stored item is stored for a long period of time. . At this time, it is preferable that the thickness, puncture strength, and seal strength of the inner bag body are also in a predetermined range.

In the sandbag bag of the present invention, the elongation is excellent when the resin film is a polyethylene film.
Moreover, an inner bag body can be manufactured comparatively easily by welding polyethylene films to each other.

In the sandbag bag of the present invention, when a reinforcing film is further disposed between the resin films, the strength can be further improved. At this time, the reinforcing film is preferably a polyester film, a polyamide film, a polypropylene film, a polyvinylidene chloride film, a polyvinyl alcohol film, a polyvinyl chloride film, a polymethylpentene film, a polyacrylonitrile film or a silica film.
Moreover, when the reinforcing film is a multilayer structure in which a plurality of these films are laminated via a polyethylene film, the strength can be further improved.

  In the sandbag bag of the present invention, when the outer bag is a woven fabric, a knitted fabric or a braid made of polyester or polypropylene, it has flexibility, and even when it receives stress from the inner bag, Can be dispersed.

  In the sandbag bag of the present invention, when the outer bag body is provided with a fixing portion for fixing the inner bag body, the inner bag body can be prevented from being displaced with respect to the outer bag body or being rubbed against each other. can do. At this time, if the fixing portion partially fixes the outer side surface of the inner bag body and the inner side surface of the outer bag body, a predetermined degree of freedom is secured in the inner bag body, so that it is easy to handle.

In the sandbag bag of the present invention, when the fixing portion is an adhesive tape, and the fixing portion is attached to the outer bag body by sewing and attached to the inner bag body by sticking, the fixing portion is attached to the outer bag body. And the inner bag body can be securely fixed with one touch.
Moreover, when the inner bag body is detachable from the fixing portion, the inner bag body can be appropriately replaced.

In the sandbag bag of the present invention, when the volume of the inner bag is larger than the volume of the outer bag, the shape of the outer bag is changed even if the shape of the sandbag is changed. Can be easily followed.
Moreover, when the sandbag bag body is lifted, it is possible to suppress the inner bag body from being pulled together with the outer bag body (tension suppressing action).
Furthermore, since the filling pressure of the stored items is transmitted to the outer bag body via the inner bag body, the inner bag body can be prevented from being damaged (pressure suppressing action).

  In the sandbag bag of the present invention, when the moisture permeability and oxygen permeability of the inner bag are within a predetermined range, it is possible to suppress the bad odor emitted from the contents from leaking to the outside.

  The sandbag bag of the present invention further includes a belt-like suspension belt for lifting the outer bag body, and when the suspension belt is sewn on the side surface of the outer bag body, the sandbag via the suspension belt. The bag body can be easily transported by a crane or the like.

FIG. 1 is a perspective view schematically showing a sandbag bag according to the present embodiment. FIG. 2 is a perspective view showing an outline of the inner bag of the sandbag bag according to the present embodiment. FIG. 3 is an explanatory diagram for explaining a state of the inner bag body and the outer bag body when the sandbag bag body according to the present embodiment is deformed. FIG. 4 is an enlarged view showing a portion P of the sandbag bag shown in FIG. (A) of FIG. 5 is the schematic cross-sectional view which cut | disconnected the sandbag bag body shown in FIG. 1 horizontally, (b) is fixation of an outer bag body and an inner bag body from the state of (a). FIG. FIG. 6A is a bottom view schematically showing the sandbag bag according to the present embodiment, and FIG. 6B is a top view schematically showing the sandbag bag according to the present embodiment. (A)-(d) of FIG. 7 is explanatory drawing for demonstrating the accommodation method of the accommodated thing in the bag body for sandbags which concerns on this embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings as necessary. In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified. Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

The sandbag bag according to the present embodiment is used for a sandbag.
Specifically, the sandbag bag body is used for a sandbag that contains an item inside.
Here, the containment means earth and sand, stone, wood, contaminated water, crushed pieces, contaminated soil, defecation, and the like.

FIG. 1 is a perspective view schematically showing a sandbag bag according to the present embodiment.
As shown in FIG. 1, a sandbag bag 10 according to this embodiment includes an inner bag body 1 for directly and hermetically storing a stored item, an outer bag body 2 for storing the inner bag body 1, and an inner bag body 1. A belt-like suspension belt 5 is provided for lifting the outer bag body 2 in a state where the bag body 1 is stored. That is, the outer bag body 2 is provided outside the inner bag body 1.

In the sandbag 10, the container (not shown) of the inner bag 1 is sealed so that the contents are sealed in the inner bag 1, and further, the mouth of the outer bag 2 on the outer side. By sealing 8a, the inner bag body 1 is completely accommodated in the outer bag body 2.
Therefore, in the sandbag 10, the contents are accommodated while being double-sealed by the inner bag 1 and the outer bag 2. In addition, although it does not specifically limit as a method of sealing a mouth part, About the mouth part of the inner bag body 1, the method of binding with sticking, a binding band, a rope, etc. is mentioned, About the mouth part 8a of the outer bag body 2, too. , Sticking, tying with a binding band, rope or the like.

As described above, the sandbag bag body 10 has a double structure of the inner bag body 1 and the outer bag body 2, so that the strength as a sandbag bag body is excellent. Thereby, it becomes possible to accommodate a large amount of things.
Moreover, even if the inner bag body 1 receives a direct impact from the outside, the outer bag body 2 becomes a so-called barrier and can be prevented from being broken, and the stored items can be stored for a long time.

Since the sandbag bag body 10 includes the suspension belt 5, the suspension belt 5 of the sandbag bag body 10 can be lifted and transported by a crane or the like, and placed at a target position.
Here, in the sandbag bag body 10, when the outer bag body 2 bears a tension between the outer bag body 2 and the inner bag body 1 when it is lifted, the tension load on the inner bag body 1 is suppressed. (Tension suppressing action)
On the other hand, since the filling pressure of the contained items is transmitted to the outer bag body 2 through the inner bag body 1, the outer bag body 2 ensures pressure resistance, so that the inner bag body 1 is Breakage can be prevented (pressure suppression effect).
Thus, in the sandbag bag body 10, the tension suppressing action and the pressure suppressing action are exhibited.

Next, the inner bag body 1, the outer bag body 2, and the suspension belt 5 will be described in more detail.
(Inner bag)
FIG. 2 is a perspective view showing an outline of the inner bag of the sandbag bag according to the present embodiment.
As shown in FIG. 2, the inner bag body 1 has a so-called gusseted gusset shape. That is, the inner bag body 1 is formed by welding four film bodies at the horizontal ends to form the vertical seal portion 1b, and then forming a so-called gusset and welding the lower ends facing each other. Then, it is manufactured by forming the lateral seal portion 1a.

In addition, since the filling pressure of an accommodation thing applies equally to an inner bag body when an accommodation thing is accommodated in the inside of the inner bag body 1, the inner bag body 1 in which the accommodation object was accommodated becomes a substantially cylindrical shape.
Further, the inner bag body 1 is sealed with a mouth portion (not shown) in a state in which an object is accommodated therein.

In the sandbag bag body 10, the inner bag body 1 is manufactured from a film body.
The film body has a multilayer structure in which an aluminum film is disposed between a pair of resin films.
In addition, the resin film and the aluminum film are integrated through a known adhesive.
Therefore, the sandbag bag body 10 provided with the inner bag body 1 can securely store the stored items. Thereby, it is possible to prevent leakage of the contents and entry of moisture into the inside.

Here, although it does not specifically limit as a resin film, For example, a polyethylene film, a polypropylene film, a polyester film etc. are mentioned. Among these, from the viewpoint of elongation, it is preferable to employ a polyethylene film as the resin film. In addition, since a polyethylene film has low melting | fusing point, it can weld each other comparatively easily. Therefore, for example, the gusset-shaped inner bag body 1 can be easily manufactured by the method described above.
Moreover, an aluminum vapor deposition film and aluminum foil are mentioned as an aluminum film. Among these, from the viewpoint of weight reduction, the aluminum film preferably employs an aluminum foil.

In the film body, it is preferable that a reinforcing film is further disposed between the resin films. Thereby, intensity | strength can be improved more.
In addition, the resin film and the reinforcing film may be integrated via a known adhesive, or may be integrated by welding.
Moreover, the reinforcing film and the aluminum film are integrated through a known adhesive.

  Here, the reinforcing film is not particularly limited, but for example, polypropylene film, polyester film, polyamide film, polyvinylidene chloride film, polyvinyl alcohol film, polyvinyl chloride film, polymethylpentene film, polyacrylonitrile film, silica vapor deposition film. Etc. are mentioned. Among these, the reinforcing film is preferably a polyamide film (for example, nylon film) from the viewpoint of the balance of strength, elongation, and weight reduction.

  Therefore, the film body preferably includes an aluminum film disposed between a pair of polyethylene films, more preferably includes an aluminum film and a reinforcing film disposed between the pair of polyethylene films. More preferably, an aluminum film and a polyamide film (reinforcing film) are disposed between the polyethylene films.

For example, as shown in the part Q of FIG. 2, the inner bag body 1 is composed of a film body, and such a film body from the inside includes a polyethylene film R1, an aluminum foil (aluminum film R2), a polyamide film R3, and a polyethylene film R4. It is even more preferable that the layers have a laminated structure. The arrangement positions of the aluminum foil and the polyamide film R3 may be reversed.
In this case, since the multilayer film of the polyamide film R3 and the polyethylene film R4 having excellent strength is disposed on one side of the aluminum foil, and the polyethylene film R1 having excellent elongation is disposed on the other side, the inner bag body 1 is excellent in elongation and strength.

  The inner bag body 1 has a tensile strength measured in accordance with JIS-K7127 of 50.0 N / 15 mm or more. If the tensile strength is less than 50.0 N / 15 mm, when the sandbag bag body is lifted, the inner bag body 1 may be pulled together with the outer bag body 2, and the inner bag body 1 may be broken.

  The inner bag body 1 has a tensile elongation measured according to JIS-K7127 of 400% or more. When the elongation is less than 400%, the inner bag 1 may not be able to follow the deformation caused by the movement of the stored items during transportation or the like, and may be damaged.

  The inner bag body 1 has a tear strength measured in accordance with JIS-K7128-3-A of 50.0 N / mm or more. When the tear strength is less than 50.0 N / 15 mm, the contained bag is moved during transportation or the like, and suddenly a large filling pressure is applied to the inner bag, resulting in damage to the inner bag. There is a case.

  Therefore, the sandbag bag 10 according to the present embodiment has a tensile strength, tensile elongation, and tear strength of the inner bag body within a predetermined range, so that the sandbag bag 10 can be used for sandbags even if it is stored for a long period of time. It is possible to prevent the bag body from being damaged.

  Moreover, it is preferable that the inner bag body 1 is 100 micrometers or more in thickness. When the thickness is less than 100 μm, there is a drawback that it is easily damaged by embrittlement when used for a long period of time as compared with the case where the thickness is in the above range.

  The inner bag body 1 preferably has a puncture strength measured according to JIS-Z1707 of 8.0 N or more. When the piercing strength is less than 8.0 N, the stab strength is smaller than that in the above range. The body 1 may be damaged.

  The inner bag body 1 preferably has a seal strength measured in accordance with JIS-Z1707 of 40.0 N / 15 mm or more. When the seal strength is less than 40.0 N / 15 mm, the film may peel off when used for a long time.

The inner bag body 1 has a moisture permeability measured in accordance with JIS-K7129 of 100 g / m ² · 24 h or less, preferably 20 g / m ² · 24 h or less, and 5 g / m ² · 24 h or less. It is more preferable. When the moisture permeability exceeds 100 g / m ² · 24 h, it is possible to surely prevent leakage of a fluid container and entry of moisture from the outside, as compared with the case where the moisture permeability is within the above range. There are cases where it is not possible.

  The inner bag body 1 is preferably one that does not leak even when a pressure of 0.3 MPa is applied in the waterproof test of Method B of JIS-K6404-7. In this case, it is possible to more reliably prevent the leakage of the contents and the intrusion of moisture.

The inner bag body 1 preferably has an oxygen permeability measured in accordance with JIS-K7126 of 500 ml / m ² · 24 h · MPa or less, more preferably 100 ml / m ² · 24 h · MPa or less, More preferably, it is 25 ml / m ² · 24 h · MPa or less. If the oxygen permeability exceeds 500 ml / m ² · 24 h · MPa, the malodor of the contained material may leak to the outside as compared with the case where the oxygen permeability is within the above range.

FIG. 3 is an explanatory diagram for explaining a state of the inner bag body and the outer bag body when the sandbag bag body according to the present embodiment is deformed.
As shown in FIG. 3, in the sandbag bag body 10, the inner bag body 1 is housed inside the outer bag body 2 so that the side surface has a bowl shape. That is, the volume of the inner bag body 1 when the side ridge is extended is larger than the volume of the outer bag body 2. For this reason, even if the shape of the sandbag bag body 10 changes, the inner bag body 1 can easily follow the shape of the outer bag body 2 (change in the arrow direction).
In addition, once it is made to follow, shape retention is ensured by the frictional force of the heel.
In the present specification, the “volume of the outer bag body” means the maximum internal volume when the mouth portion 8a of the outer bag body 2 is sealed, and the “volume of the inner bag body” It means the maximum volume inside when the bag body 1 is taken out from the outer bag body 2 and the mouth of the inner bag body 1 is sealed with the heels extended.

At this time, it is preferable that the volume V1 of the inner bag body 1 is larger than 1 time and less than 4.0 times the volume V2 of the outer bag body 2 from a viewpoint of handleability. That is, it is preferable to satisfy the following formula.
1 <V1 / V2 ≦ 4.0

(Outer bag body)
Returning to FIG. 1, in the sandbag bag body 10 according to the present embodiment, the outer bag body 2 is sealed with the mouth portion 8 a in a state in which the inner bag body 1 described above is accommodated.
Further, the outer bag body 2 is partially sewn with a suspension belt 5 on the outer side surface, and a fixing portion 3 for fixing the inner bag body is provided on the inner side surface. That is, the outer bag body 2 can fix the inner bag body 1 via the fixing portion 3. Details of the fixing unit 3 will be described later.

  Here, the material of the outer bag body 2 is not particularly limited, and polyester, polypropylene, polyethylene, polyamide, aramid, and the like are used. Among these, it is preferable that the material of the outer bag body 2 is polyester or polypropylene from the viewpoint of strength and ease of recycling.

In the sandbag bag body 10 according to the present embodiment, the structure of the outer bag body 2 is a woven fabric, a knitted fabric, a nonwoven fabric, or a braid. For this reason, since the outer bag body 2 has flexibility, it can absorb even if there is an impact from the outside.
In particular, the outer bag is more preferably a woven fabric, a knitted fabric or a braided fabric made of polyester or polypropylene. In this case, since it has a predetermined strength and has flexibility, even if it receives stress from the inner bag body 1, the force can be dispersed.

  The outer bag body 2 preferably contains an additive such as a reflective agent or an ultraviolet absorber. Such an additive may be kneaded into the material, or may be applied after the outer bag 2 is formed. In this case, deterioration of the outer bag body 2 due to ultraviolet rays can be suppressed. Examples of the reflective agent include carbon black, iron oxide, chromium oxide, lead oxide, zinc oxide, magnesium oxide, titanium oxide, calcium carbonate, and barium sulfate. Examples of the ultraviolet absorber include phenyl salicylate and hydroxybenzophenone. And benzotriazole-based absorbents.

  In the outer bag body 2, it is preferable that the tensile strength measured according to JIS-L1096 is 240 N / cm or more. By providing an outer bag body having a tensile strength of 240 N / cm or more on the outer side of the inner bag body 1, sufficient strength can be exhibited as the sandbag bag body 10 itself. Thereby, it is possible to lift and carry the sandbag bag body in which a large amount of items are accommodated by a crane or the like. Moreover, since the strength of the sandbag bag 10 is secured by the outer bag body 2, the inner bag body 1 can be selected and used in a wide range of materials capable of hermetically containing the contained items even if the strength is not so great. .

FIG. 4 is an enlarged view showing a portion P of the sandbag bag shown in FIG.
As shown in FIG. 4, the suspension belt 5 is partially sewn to the sewn portion 2 b on the outer side surface of the outer bag body 2, and the covering material 7 is placed outside so as to sufficiently cover the sewn portion 2 b. It is sewn on the outer side surface of the bag body 2.
In the present specification, a portion where the outer bag body 2 is partially sewn is defined as a sewn portion. The covering material 7 has a rectangular shape and is sewn so that both end portions of the covering material 7 are along both sides of the suspension belt 5.

As a material of the covering material 7, polyester, polypropylene, polyethylene, polyamide, aramid, or the like is used. Among these, the material of the covering material 2 is preferably polyester or polypropylene from the viewpoint of strength and ease of recycling.
The material of the covering material 7 is more preferably the same as the material of the outer bag body 2.

  The covering material 7 preferably contains an additive such as a reflective agent or an ultraviolet absorber. Such an additive may be kneaded into the material, or may be applied after forming the covering material 7. In this case, deterioration of the covering material 7 due to ultraviolet rays can be suppressed. In addition, the same thing as what was mentioned above can be used suitably for a reflector and a ultraviolet absorber.

In the sandbag bag body 10, by providing the covering material 7, it is possible to prevent deterioration of the sewing portion 2 b, particularly the thread used for sewing, due to ultraviolet rays.
Further, the fixation between the sewn portion 2b and the outer bag body 2 is reinforced.

Returning to FIG. 1, the fixing portion 3 partially fixes the outer side surface of the inner bag body 1 and the inner side surface of the outer bag body 2.
(A) of FIG. 5 is the schematic cross-sectional view which cut | disconnected the sandbag bag body shown in FIG. 1 horizontally, (b) is fixation of an outer bag body and an inner bag body from the state of (a). FIG.
As shown in FIG. 5 (a), in the sandbag bag body 10, the inner side surface of the outer bag body 2 and the outer side surface of the inner bag body 1 are partially in the circumferential direction via the fixing portion 3. It is fixed to. For this reason, it can prevent that the inner bag body 1 slip | deviates with respect to the outer bag body 2, and mutually rubs. That is, since the fixing portion 3 partially fixes the outer side surface of the inner bag body 1 and the inner side surface of the outer bag body 2, the inner bag body 1 has a predetermined movement in a portion other than the fixing portion 3. There is a degree of freedom.
In addition, the fixing portion 3 is fixed at four intervals on the inner side surface of the outer bag body 2 at equal intervals, so that when the sandbag bag body 10 is lifted by a crane or the like via the suspension belt 5, the inner bag body 1 is supported by the outer bag body 2 in a well-balanced manner.

  Here, in the sandbag 10 according to the present embodiment, the outer bag 2 is a woven fabric, a knitted fabric, a non-woven fabric, or a braid, so that it can be fixed to the fixing portion 3 by sewing. . By fixing by sewing, the fixing portion 3 is securely fixed to the outer bag body 2.

On the other hand, in the sandbag bag body 10 according to the present embodiment, the inner bag body 1 is a film body, and thus can be fixed to the fixing portion 3 by sticking.
At this time, it is preferable that the inner bag body 1 is detachable from the fixing portion 3. In this case, as shown in FIG. 5 (b), the inner bag body 1 adhered to the fixing portion 3 can be peeled off once, and then it can be adhered again to a desired position.

Although it does not specifically limit as a material of the fixing | fixed part 3, The thing etc. which apply | coated the adhesive to the commercially available adhesive tape which can be sewn, or a fiber piece, etc. are mentioned. Among these, it is preferable that the fixing | fixed part 3 is an adhesive tape.
Therefore, as described above, it is preferable that the fixing portion 3 is attached to the outer bag body 2 by sewing and is easily attached to the inner bag body 1 by sticking. In this case, the fixing portion 3 can be reliably fixed to the outer bag body 2 and the fixing portion 3 and the inner bag body 1 can be easily fixed. On the other hand, the inner bag 1 can be easily attached and detached.

(Suspension belt)
FIG. 6A is a bottom view schematically showing the sandbag bag according to the present embodiment, and FIG. 6B is a top view schematically showing the sandbag bag according to the present embodiment.
As shown in FIG. 6A, in the sandbag bag body 10, the suspension belt 5 is orthogonal to the bottom portion 2a of the outer bag body 2, and on the side surface of the outer bag body 2, the bottom portion 2a Mounted vertically. For this reason, when the outer bag body 2 is lifted in a state where the contents are thrown in, the outer bag body 2 is effectively pressed by the suspension belt 5 from the periphery to the inside, so that the stability when the sandbag bag body 10 is lifted is stable. Therefore, it becomes possible to carry the product more safely and reliably. In addition, in the bottom part 2a of the outer bag body 2, the suspension belt 5 is sewn by the sewing part 2b of the bottom part 2a.

  And as shown to (b) of FIG. 6, on the upper surface of the outer bag body 1, the adjacent suspension belts 5 are connected. That is, substantially one suspension belt 5 is attached to the outer bag body 2. As a result, when lifting the sandbag bag body 10, the entire outer bag body 2 is lifted by the suspension belt 5 without depending on the sewing strength between the outer bag body 2 and the suspension belt 5.

  A handle portion 5 a is formed at the upper end portion of the suspension belt 5. The handle portion 5a is a portion that is hooked on the hook of the crane when the sandbag bag body 10 is lifted by a crane or the like. In addition, it is preferable that the handle part 5a becomes the structure which folded the suspension belt 5 double from a viewpoint of improving an intensity | strength more. Moreover, in order not to make a mistake in the position which hooks a crane vehicle, it is preferable that the handle part 5a is made into the color different from the color of the outer bag body 2. FIG. Further, the handle portion 5a may be provided with a cover for reinforcement, and a color different from the color of the outer bag body 2 may be given to the cover.

  Here, the material of the suspension belt 5 is not particularly limited, but polyester, polypropylene, polyethylene, polyamide, and the like are used. Among these, the material of the suspension belt 5 is preferably polypropylene from the viewpoint of durability and ease of recycling.

  The suspension belt 5 preferably contains an additive such as a reflective agent or an ultraviolet absorber. Such an additive may be kneaded into the material, or may be applied after the suspension belt 5 is formed. In this case, deterioration of the suspension belt 5 due to ultraviolet rays can be suppressed. In addition, the same thing as what was mentioned above can be used suitably for a reflector and a ultraviolet absorber.

The suspension belt 5 preferably has a tensile strength according to JIS-L1096 of 30 kN / piece or more.
When the tensile strength is less than 30 kN / piece, the suspension belt may be damaged when the sandbag bag containing the contents is lifted as compared with the case where the tensile strength is within the above range.

  In the sandbag 10, the suspension belt 5 is attached to the outer side surface of the outer bag 2 in four directions. That is, since the four suspension belts 5 are attached to the outer side surface of the outer bag body 2, so-called four suspensions are provided. For this reason, in the sandbag bag 10, when the sandbag bag 10 is lifted by a crane or the like via the suspension belt 5, a load is applied to the four suspension belts 5 approximately evenly. 10 breakage can be suppressed.

Next, the accommodation method of the things in the sandbag bag 10 according to the present embodiment will be described.
(A)-(d) of FIG. 7 is explanatory drawing for demonstrating the accommodation method of the accommodated thing in the bag body for sandbags which concerns on this embodiment.
First, as shown to (a) of FIG. 7, the outer bag body 2 and the inner bag body 1 are installed in the open state. At this time, it is desirable to fix the sandbag bag body 10 using a frame or the like (not shown).
Next, as shown in (b) of FIG. 7, the contents are put into the inner bag body 1.
And as shown in FIG.7 (c), while closing the opening of the inner bag body 1, and sealing the opening | mouth part 8b, an accommodation thing is sealed in the inner bag body 1. FIG.
Next, as shown in FIG. 7D, the inner bag body 1 is accommodated in the outer bag body 2 by closing the opening of the outer bag body 2 and sealing the mouth portion 8a.
Then, the suspension belt 5 attached to the outer bag body 2 is lifted and transported by a crane or the like (not shown), and placed and constructed at a target position.

  According to the method for accommodating the contents in the sandbag bag 10, a large amount of the contents can be reliably sealed and accommodated.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to embodiment mentioned above.

For example, in the sandbag 10 according to the present embodiment, the inner bag 1 has a gusseted shape with a gusset, but is not limited thereto. For example, the shape of the inner bag body 1 may be a columnar shape, an envelope shape, a quadrangular prism shape, an elliptical column shape, or the like.
Further, the shape of the fixed portion 3 is not limited to a rectangular shape.

In the sandbag bag 10 according to the present embodiment, as shown in FIG. 2, the reinforcing film has a single-layer structure of a polyamide film R3, but the reinforcing film includes a polypropylene film, a polyester film, a polyamide film, A multilayer structure in which a plurality of films such as a polyvinylidene chloride film, a polyvinyl alcohol film, a polyvinyl chloride film, a polymethylpentene film, a polyacrylonitrile film, and a silica vapor deposition film are laminated may be used. The plurality of films used may be the same type or different types.
Further, the reinforcing film may have a multilayer structure in which a plurality of these films are laminated via a polyethylene film. For example, the reinforcing film may have a structure in which five layers are laminated in the order of a polyamide film, a polyethylene film, a polyamide film, a polyethylene film, and a polyamide film.
In this case, the sandbag bag body 10 has higher strength.

In the sandbag bag body 10 according to the present embodiment, the outer bag body 2 is provided with the fixing portion 3 for fixing the inner bag body 1, but the fixing portion 3 is not necessarily provided.
Further, in the sandbag bag body 10, the inner side surface of the outer bag body 2 and the outer side surface of the inner bag body 1 are partially fixed to the circumferential direction via the fixing portion 3. The position for fixing the body 2 and the inner bag body 1 is not particularly limited.
Furthermore, although the fixing | fixed part 3 and the outer bag body 2 are sewn, and the fixing | fixed part 3 and the inner bag body 1 are stuck, the fixing method is not limited to these.

The sandbag bag body 10 according to the present embodiment includes the belt-like suspension belt 5 for lifting the outer bag body 2 in which the inner bag body 1 is housed, but the shape of the suspension belt 5 is not limited to the belt shape.
Moreover, the sandbag bag 10 does not need to have the suspension belt 5.

In the sandbag bag body 10 according to the present embodiment, one suspension belt 5 is looped and attached to the outer bag body 2, but a plurality of suspension belts may be used.
Moreover, although the suspension belt 5 is partially sewn on the outer bag body 2, it may be sewn on the entire side surface. The same applies to the bottom 2a of the outer bag body 2.
Furthermore, the suspension belt 5 is attached along the side surface of the outer bag body 2 so as to be orthogonal to the bottom portion 2a of the outer bag body 1 and to rise from the bottom portion 2a, but is not limited to this structure.
Furthermore, in the sandbag bag body 10, four suspensions are used, but two or three suspensions may be used, and five or more suspensions may be used.

  In the sandbag 10 according to this embodiment, the inner bag 1 may be provided with a check valve. In this case, when gas is generated inside the inner bag body 1, it is possible to prevent the sandbag bag body 10 from being ruptured by releasing it from the check valve.

  The sandbag 10 according to the present invention is used to accommodate a large amount of items, and to transport and construct it at a predetermined position. According to the sandbag bag according to the present invention, it is possible to hermetically accommodate the contents and to prevent the sandbag bag from being damaged.

DESCRIPTION OF SYMBOLS 1 ... Inner bag body 1a ... Horizontal seal part 1b ... Vertical seal part 10 ... Bag body for sandbags 2 ... Outer bag body 2a ... Bottom part 2b ... Sewing part 3. ..Fixing part 5 ... Hanging belt 5a ... Handle part 7 ... Coating material 8a, 8b ... Mouth part

Claims (13)

A sandbag for a sandbag,
An inner bag for hermetically containing the contents;
An outer bag that houses the inner bag,
With
The inner bag body has a multilayer structure in which an aluminum film is disposed between a pair of resin films,
The inner bag body has a tensile strength according to JIS-K7127 of 50.0 N / 15 mm or more, a tensile elongation according to JIS-K7127 of 400% or more, and JIS-K7128-3-A. A bag for sandbags having a tear strength of 50.0 N / mm or more in accordance with the above.   The thickness of the inner bag body is 100 µm or more, the puncture strength according to JIS-Z1707 is 8.0 N or more, and the seal strength according to JIS-Z1707 is 40.0 N / 15 mm or more. The sandbag bag according to the description. The resin film is a polyethylene film;
The bag for sandbags according to claim 1 or 2, wherein ends of the polyethylene films are welded to each other. A reinforcing film is further arranged between the resin films,
The reinforcing film is a polyester film, polyamide film, polypropylene film, polyvinylidene chloride film, polyvinyl alcohol film, polyvinyl chloride film, polymethylpentene film, polyacrylonitrile film, or silica film. The sandbag bag according to Item. A reinforcing film is further arranged between the resin films,
The reinforcing film is a multilayer in which a plurality of polyester films, polyamide films, polypropylene films, polyvinylidene chloride films, polyvinyl alcohol films, polyvinyl chloride films, polymethylpentene films, polyacrylonitrile films or silica films are laminated via polyethylene films. It is a structure, The bag for sandbags of any one of Claims 1-3.   The sandbag according to any one of claims 1 to 5, wherein the outer bag is a woven fabric, a knitted fabric, or a braid made of polyester or polypropylene.   The sandbag bag according to any one of claims 1 to 6, wherein the outer bag is provided with a fixing portion for fixing the inner bag. The fixing part is an adhesive tape;
The sandbag bag according to claim 7, wherein the fixing portion is attached to the outer bag body by sewing and attached to the inner bag body by sticking.   The sandbag bag body according to claim 7 or 8, wherein the fixing portion partially fixes the outer side surface of the inner bag body and the inner side surface of the outer bag body.   The sandbag bag according to any one of claims 7 to 9, wherein the inner bag is detachable from the fixing portion.   The sandbag bag body according to any one of claims 1 to 10, wherein a volume of the inner bag body is larger than a volume of the outer bag body. The moisture permeability measured according to JIS-K7129 of the inner bag body is 100 g / m ² · 24 h or less, and the oxygen permeability measured according to JIS-K7126 is 500 ml / m ² · 24 h · MPa or less. Item 11. A sandbag bag according to any one of Items 1 to 11. A belt-like suspension belt for lifting the outer bag body;
The sandbag bag according to any one of claims 1 to 12, wherein the suspension belt is sewn to a side portion of the outer bag.

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