JP3027459U - Liquid bag outlet stop structure - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a flat liquid bag with a discharge port and easily prevent liquid from leaking from the discharge port. In a stop structure of a flat liquid bag discharge port formed by closing the peripheries of two waterproof sheets on the front and back sides, the discharge port projects from the peripheral edge of the bag main body in a plane to which the bag main body belongs. Or, it has an elongated shape branched from the bag body in the plane to which the bag body belongs, and this discharge port can be folded at least in two, and the facing surface to be folded in two has a male member of a surface fastener. And female member are provided respectively

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a bag, and more particularly to a structure for stopping a discharge port of a flat liquid bag including two waterproof sheets on the front and back.

[0002]

[Problems to be solved by conventional techniques and devices]

 Conventionally, for example, as shown in Japanese Utility Model Publication No. 63-8606, two front and back plastic films are welded at their peripheries, and two front and back sheets are formed at an opening provided at one position on the perimeter. There is a liquid bag in which a flat cylindrical injection valve in which a sheet is closely formed is inserted. This is preferable for water storage and leisure for disasters.

However, a drawback of the bag is that it does not have a discharge port. Therefore, when taking out the contents, it is necessary to cut one part of the bag with scissors or the like. Therefore, it is necessary to use up the content liquid all at once.

The present invention solves such a problem, and in a flat liquid bag composed of two waterproof sheets on the front and back sides, an elongated outlet located in the plane is provided and the outlet is It is made to be foldable, and both folded parts are engaged with a hook-and-loop fastener to hold it in the folded state.

[0005]

[Means for Solving the Problems]

 The liquid bag having a stop structure of the discharge port of the present invention is a flat liquid bag stop structure of the liquid bag formed by closing the peripheries of two waterproof sheets, and the discharge port is a bag body. It has an elongated shape that protrudes from the peripheral edge of the bag body in the plane to which the bag body belongs or is branched from the bag body in the plane to which the bag body belongs, and this discharge port can be folded at least in two. A male member and a female member of the surface fastener are respectively provided on the opposite faces to be folded in two, or the folded outlet is folded on the bag body side, and then the extension piece of the bag body is folded, A male member and a female member of the surface fastener for holding in this state are appropriately arranged.

It is to be noted that the bag of the present invention is premised on being formed of a waterproof sheet having two front and back surfaces, but a bag having gussets on the entire circumference, both sides, or one side is also included. .

[0007]

[Work]

 The outlet is folded and the folded state is held by the hook-and-loop fastener. Discharge port tip Unlike the case where the opening is plugged, it is not necessary to receive the pressure of the liquid, which is the content, by the closing means, and it is sufficient to receive it at the folding portion. That is, it is possible to effectively prevent the liquid from leaking from the discharge port by the engaging force of the surface fastener that maintains the folded state.

[0008]

[Embodiment of device]

 Reference numeral 10 denotes a structure in which two front and back plastic films 10a and 10b are heat-welded on the periphery of the plastic films 10a and 10b at locations indicated by hatching.

In the portion demarcated by the heat-welded portions 12, 14, 16, 18, 20, and 22, between the two front and back sheets 10a and 10b constituting the bag body, another two front and back sheets are provided. 11a and 11b are inserted. The welding parts 12 and 22 are formed by integrally heat-sealing four films. In the welding portion 14, the two films 10a and 11a on the front side of the paper surface are welded, and apart from this, the other two films 11b and 10b on the back side of the paper surface are welded together. . Then, in the welded portions 16, 18, 20, the front and back sheets 11a, 11b inserted into the bag body are heat-welded. Also in the other two welding lines 24 and 26, the two sheets 11a and 11b inserted in the bag are welded.

Further, in the welding portion 30, four sheets are welded together, and in the welding portion 32, the two films 10a and 11a on the front side of the paper surface are welded to each other, and further, Two films 11b and 10b on the back side are welded. Similarly, in the welded portion 34, a total of four films 10a, 11a, 11b, 10b are welded together.

As a result, the portion 28 defined by the welded portions 14, 32, 34 serves as a funnel when pouring water. Further, the subsequent portion demarcated by the welded portions 24, 26, 18 constitutes a flat tubular injection valve 36. In the vicinity of the welded portion 18 at the tip of the injection valve 36, a notch 38 is provided in the film 11a on the front side of the paper forming the injection valve 36. When the portion 28 is inserted into a tap of a water supply and the water is injected, the water passes through the valve body 36 and is injected into the bag through the notch 38. Then, when the bag is filled with water and the water reaches above the notch 38 in the posture of FIG. 1, the front and back sheets 11a and 11b forming the valve body 36 are caused by the internal pressure in the bag, that is, the water pressure. They are crimped together to prevent backflow of water.

The portion demarcated by the welded portions 16, 26 and 30 constitutes a sheet-shaped surplus portion 40. The portion defined by the welded portions 20, 22, 24 constitutes another sheet-shaped surplus portion 42. Sheet-shaped surplus portions 40 and 42 are continuously provided on both left and right sides of the injection valve 36, and these sheet-shaped surplus portions 40 and 42 are integrally welded to the bag body 10 at the welding portions 12, 22, and 30.

With this structure, the portions 36, 40, 42 are wide in the vertical direction and the width direction as a whole and have a large area, and at least the two sides are welded at the peripheral edge of the bag body. It is welded at the part. Therefore, even if the force to bend the tip side of the injection valve 36 acts, the portions 36, 40, 42 having a large area resist as a whole and prevent the bending. Moreover, even if the whole body is bent, it is easy to restore the original posture, that is, the flat posture.

As shown in detail in FIG. 6, the injection valve 36 is not opened at the tip 38 thereof in the lower right direction in FIG. 1, but a cut 38 is provided in the seat 11 a on the surface side of the injection valve 36. The left and right sides of the cut 38 in FIG. 6 form a step, so that an opening is formed in the cut 38, and water is injected into the bag from this portion. In this way, since one sheet is originally forced to generate a step, it is easy to quickly return to the original state, that is, a completely flat state, by eliminating the pressure of water injection. Therefore, there is no risk of backflow of water from this opening.

Reference numeral 54 is an outlet provided on the right shoulder of the bag body. The discharge port 54 is elongated and extends upward. A male member 56 of a surface fastener (trademark: Velcro fastener) is provided on one surface of the tip side (the back surface side in FIG. 5), and another male member 56 is provided on the base side of the same surface with a slight gap. A member 58 is provided. Further on the base side, the female member 60 is arranged on the other surface (the front surface side in FIG. 5). A male member 62 is arranged below this with a slight interval. An extension piece 64 extends laterally from the side edge of the bag body 10 at the location where the female member 60 and the male member 62 are provided. Two other female members 66 and 68 are attached above and below the extension piece 64.

From the discharge posture in which the discharge port 54 extends in FIG. 5, bend the tip side of the discharge port 54 to the side opposite to the side where the male member 56 is provided (the front side of the paper surface in FIG. 5). Fold it on the base side of the outlet (Fig. 4). Next, the thus folded pieces are further folded on the base side. At this time, the male member 56 on the front end side is superposed on the female member 60, and both are entangled (FIG. 3).

From this state, the extension piece 64 is folded on the bag body side. As a result, the two female members 66 and 68 above and below the extension piece engage with the male member 60 and the male member 62, and the sealing of the discharge port 54 is completed (FIGS. 1 and 2).

By providing the surface fastener at the discharge port as described above, it is possible to prevent water from leaking from the discharge port. At that time, as shown in FIG. 3, even if the outlet 54 is bent twice, there is some effect in preventing water from leaking out. However, by stacking the extension piece 64 on top, as shown in FIG. Since the extension piece 64 can hold the wound state of the discharge port, leakage of water can be prevented more reliably.

Various modifications can be considered for the folding method of the discharge port and the attachment position of the surface fastener.

Extension pieces 70, 72, 74 are provided on three sides of the bag body 10 excluding the upper end portion. Holes 76 are provided in these extension pieces and the portions defined by the welded portions 12, 30, 34. When carrying this bag in an appropriate posture, it is sufficient to put a finger through the appropriate hole 76 and lower it.

Although the discharge port 54 is provided in the above embodiment, it is not always necessary to provide this. Further, the position where the discharge port is provided and the shape thereof are also arbitrary. However, the entire bag 10 must belong to the main plane formed by the two front and back sheets 10a and 10b constituting the bag body or be located in another plane close to and parallel to this plane. Is preferable because it is flat.

FIG. 8 shows another embodiment of the present invention. The bag body 10 is made of a cylindrical material and is welded 80 at the bottom (not shown) and the top. A part of the welded portion 80 has an opening 82, and an injection valve 84 similar to that shown in JP-B-63-8606 is provided.

Reference numeral 86 is an elongated piece branched from the main body portion 88 of the bag 10 and forms a discharge port. A male member 87 of a hook-and-loop fastener is attached to the front surface of the upper half of the outlet 86, and a pear-processed sheet 88 is inserted inside. A female member 89 of a hook-and-loop fastener is provided in the lower half, and the same pear-processed plastic film 90 is inserted inside.

Since the pear-processed plastic films 88 and 90 are provided, the liquid content is smoothly passed through the discharge port 86. Further, since the male member 87 and the female member 89 of the fastener are provided on the surface of the discharge port 86, the front and back sheets at the discharge port 86 can be formed by gripping these members by hand and bending them into a V shape. 12 and 14 can be easily separated, and a smoother outflow of liquid can be secured.

The upper portion of the discharge port 86 in the drawing is folded at a point 89, and this upper portion is folded over the lower portion. By engaging the male member and the female member of the surface fastener with each other, such a folded state can be maintained.

In the embodiment shown in FIG. 9, the sheet piece 94 is inserted inside the front end portion 93 when the discharge port 92 is folded back. Similarly, another sheet piece 94 is inserted into the base portion of the discharge port 92. Although not shown, these sheet pieces 94 and 96 are arranged over the entire length of the discharge port 92 in the width direction. By doing so, when the liquid in the bag is about to leak from the outlet, the sheet piece 96 first blocks the flow thereof. Further, leakage is prevented at the folded back portion 95. Even if the liquid passes through the folded portion 95, the sheet piece 94 on the leading end side prevents the liquid from further passing. In this way, leakage prevention is more reliable. One of the sheet pieces 94 and 96 may be omitted.

Another embodiment shown in FIG. 10 is a modification of FIGS. A male member 104 of a surface fastener is attached to the upper half of the discharge port 102 on the front side of the paper surface. When closing the discharge port 102, first, the discharge port 102 is raised to the front side of the paper at the position indicated by the alternate long and short dash line 106. After that, at the location indicated by the alternate long and short dash line 108, the tip end side of the discharge port 102, that is, the portion to which the male member 104 is attached is folded in the direction opposite to the folding direction on the alternate long and short dashed line 106. In this way, the state in which the outlet 102 is folded in two at the alternate long and short dash line 108 is folded on the side of the bag body 110. In this state, when the bag 100 is viewed from the right side of the drawing, the discharge port 102 and the bag body portion 110 on which the discharge port 102 is overlapped have an S-shaped cross section. That is, this is an S-fold. When the discharge port 102 is folded on the side of the body 110 in this manner, a vertically long male member 112 is attached to the left side of the discharge port 102 in the drawing, on the front side of the paper surface of the bag body. ing. Reference numeral 114 denotes an extension piece. A vertically long female member 116 is attached to the right side of the extension piece, and a substantially square female member 118 is attached to the upper left side thereof.

When the outlet 102 is closed, the extension piece 114 is folded over the outlet 102 and the bag body 110 after the S-folding as described above. At this time, the substantially square female member 118 is superposed on the male member 104 and the two are intertwined with each other. Further, the vertically long female member 116 is superposed on the vertically long male member 112 and intertwined with each other. In this embodiment, the discharge port 102 is S-folded, and the discharge port is not wound as in the embodiments of FIGS. 3 to 5, so that the folded portions 106 and 108 are both sharply angled. Folded back to. Therefore, leakage of the liquid can be prevented more reliably.

In the above-mentioned embodiment, the plastic film is heat-welded to form the bag, but instead of this, the film is formed by high-frequency welding, ultrasonic bonding, adhesive bonding, or any other suitable means. The bag may be joined to form a bag, or the bag may be integrally formed.

Further, the discharge port may be made of another material and joined to the bag body by heat welding or the like. In this way, the bag body can be formed with a thick film and the outlet can be formed with a thin film, so that the outlet can be easily folded to further prevent water leakage. You can

[0031]

[Effect of device]

 By folding the discharge port, it is possible to easily prevent the liquid from flowing out at the broken line portion. Then, such a folded state can be held by the surface fastener. Therefore, the hook-and-loop fastener need only have sufficient strength to hold the folded state, and it is not necessary to resist the water pressure of the liquid in the bag, so that leakage of the liquid can be easily prevented.

[Brief description of drawings]

FIG. 1 is a plan view showing a bag according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where liquid is injected into the bag shown in the previous figure.

FIG. 3 is an enlarged front view showing a first state in the process of deploying the discharge port.

FIG. 4 is a diagram showing a state following the previous figure.

FIG. 5 is a diagram showing a state in which a discharge port is completely extended and discharge is possible.

FIG. 6 is an enlarged view of a main part of an injection valve.

FIG. 7 is a sectional view of an injection valve.

FIG. 8 is a plan view showing another embodiment of the present invention.

FIG. 9 is a cross-sectional view of essential parts showing another embodiment of the present invention.

FIG. 10 is a sectional view of a main part showing another embodiment of the present invention.

[Explanation of symbols]

10 ... Bag main body 12, 14 ... Front and back sheets 54, 86 ... Discharge port 56, 58, 60, 62, 66, 68, 87, 89 ...
Male or female member of hook-and-loop fastener

Claims (1)

[Scope of utility model registration request] 1. In a stop structure of a flat liquid bag discharge port formed by closing the peripheral edges of two waterproof sheets on the front and back sides, the discharge port projects from the peripheral edge of the bag main body in a plane to which the bag main body belongs. Or has an elongated shape branched from the bag body in a plane to which the bag body belongs, and this discharge port can be folded at least in two. A male member of a surface fastener for holding a member and a female member respectively, or for folding and holding a folded discharge port on the bag body side, and then folding the extension piece of the bag body. A bag in which a female member and a female member are appropriately arranged.