JP2001131937A - Sandbag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sandbag manufacturable at a low cost and satisfactorily stackable in use. SOLUTION: This sandbag comprises a thermoplastic resin-made water permeable bag 3 holding a water absorptive polymer, and gusset parts 3a and 3a are formed on the bag 3 so as to have a block shape when expanded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sandbags and water bags.

[0002]

2. Description of the Related Art Conventionally, sandbags and waterbags used in the event of a disaster or the like have been used by stacking a plurality of them, but there is a problem that the stacked state is unstable and a gap is easily formed. In addition, there is a problem that it is difficult to use a plurality of connected devices.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a sandbag which can be easily stacked in a good number and formed at a low cost. The gist is that a gusset portion is formed in a water-permeable bag made of a thermoplastic resin containing a water-absorbing polymer so as to form a block when inflated. Also, the second
The gist of the invention is that the water-permeable bag is placed in a coarse outer bag, and a plurality of the outer bags can be connected.

[0004]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded configuration diagram of a sandbag and a waterbag, and FIG. 2 is a cross-sectional configuration diagram of a state where the sandbag and the waterbag are connected.

[0005] The sandbag and hydropouch are composed of an outer bag 1 and a water-permeable bag 3 to be put in the outer bag 1, and the outer bag 1 is made of a coarse hemp bag, a resin net or a net. After the water-permeable bag 3 is formed into a bag shape and the water-permeable bag 3 is put in the bag, the edge is sealed with a sewing machine. The left and right outer ends are formed in an extended shape so as to be easily held by hand, and hole fittings 1a, 1a are attached to the left and right outer ends, respectively.
The cord 2 can be passed through the outer bag 1, and the outer bag 1 can be grasped by hand at both left and right ends and held alone, or a plurality of cords 2 can be connected. Also, instead of the string 2, a zipper is attached to the left and right outer ends of the outer bag 1,
A plurality of outer bags 1 can also be configured to be connected by a fastener. The outer bags 1 can be formed of an inexpensive material because the outer bags 1 are coarse and easy to pass water.

Further, a water-permeable bag 3 to be put in the outer bag 1
Is formed by winding a water-permeable thermoplastic resin sheet, heat-sealing it with a back heat sealing portion 3c on the back side, and heat-sealing both ends in the longitudinal direction with a heat sealing portion 3b to form a bag. The back heat seal portion 3c can be heat sealed by polymerizing the back heat seal portion and the gasoline stretch method.

The water-permeable bag 3 of the present embodiment can be formed of, for example, a nonwoven fabric having a core-sheath structure or a nonwoven fabric of a laminated type of spun-pound long fiber or spun-pound short fiber. Gazette portions 3a, 3a are formed in a folded shape on both side surfaces, and a water-absorbing polymer 4 and an antibacterial agent 5 such as silver zeolite can be sealed in the inside, so that water can be impregnated inside. Then, the water-absorbing polymer 4 enclosed therein absorbs water. When the water-absorbing polymer 4 expands and the water-permeable bag 3 expands, the gusset portion 3a is formed so that the entire water-permeable bag 3 has a rectangular block shape. , 3a are formed.

FIG. 3 is a perspective view showing a state in which a plurality of water-permeable bags 3 are put in the outer bag 1 and are swelled by absorbing water, and a plurality of the bags are stacked. Since the entire structure is in a block shape in a folded state, a plurality of layers are easily stacked, and the stacked state is less likely to be displaced, and a gap is less formed, so that a good stacked state is obtained.

The sandbag having such a structure can also be used as a waterbag, and in the event of a disaster or the like, it can be immersed in water and expanded to be used as shown in FIG. It can be piled up and held, or it can be used by connecting it with a string 2 or fasteners in advance and absorbing water at the same time, and throwing it into a river or sea etc. It can also be used to prevent the outflow of suspended matter, and can be folded tightly and stored compactly in a state where it is connected with the string 2 or the like. The outer bag 1 has a coarse mesh so that water can easily pass therethrough, so that the water-permeable bag 3 can be inflated in a block shape by absorbing water at a high speed, and the entire bag can be formed of an inexpensive material. Becomes

[0010]

The sandbag of the present invention has a gusset portion formed in a water-permeable bag made of a thermoplastic resin containing a water-absorbing polymer so as to be formed into a block shape when inflated. It can be stored and stored, and when used, it expands in a block shape by absorbing water, making it easier to stack multiple pieces,
A gap is less formed in the stacked state, and the effect of shielding water or the like at the time of a disaster or the like can be favorably achieved.

Further, since the water-permeable bag is put in a coarse outer bag and a plurality of the outer bags can be connected to each other, the whole outer bag can be formed inexpensively with the coarse outer bag. It can also be connected to multiple units and stored compactly.Also, it can be used by absorbing water in a connected state, and several people can pile up several sandbags at the same time. This facilitates the throwing of the suspended matter into a river or the like in a connected state, thereby preventing the outflow of suspended matters.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of components of a sandbag.

FIG. 2 is a cross-sectional configuration diagram of a state in which a plurality are connected.

FIG. 3 is a perspective view showing a state in which water is absorbed and stacked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer bag 1a Hole fitting 2 String 3 Water-permeable bag 3a Gazette part 3b, 3c Heat seal part 4 Water-absorbing polymer 5 Antibacterial agent

Claims (2)

[Claims] 1. A sandbag, wherein a gusset portion is formed in a thermoplastic resin water-permeable bag containing a water-absorbing polymer therein so as to form a block when inflated. 2. The sandbag according to claim 1, wherein the water-permeable bag is placed in a coarse outer bag, and a plurality of the outer bags can be connected.