JP2020066465A - Bag body and stick balloon - Google Patents

Abstract

To easily inflate a stick balloon or the like at a low cost without using a straw, and to avoid an environmental pollution problem by not using a plastic straw.SOLUTION: There is provided a bag body 1 provided with a check valve 2 in which two films 3a and 3b have an overlapping structure, and inflated by being filled with gas through the check valve 2, in which a gas introduction part 9 of the check valve 2 has two films 3a and 3b projecting from a bag body 4 to the outside in a wide structure in a wide width at a large distance, and the two films 3a and 3b having the overlapping structure open at their projecting parts, and inflate when the lips are brought together and gas is blown from the mouth.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a gas introduction structure for a bag such as a stick balloon used as a support tool.

  When supporting various athletic competitions, stick balloons that expand in a rod shape by being filled with gas are widely used. This stick balloon is sold together with a straw in a competition venue without being filled with air, and the purchaser inserts the straw from the check valve and blows air through the mouth to inflate it. On the other hand, recently, the fact that a straw made of plastics causes environmental pollution has been taken up as a big problem, and the use of a straw made of paper has been proposed, but the cost becomes very high.

Invention concept

Problems to be Solved by the Invention

  An object of the present invention is to provide a bag body such as a stick balloon that can be easily inflated with a mouth without using a straw.

Means for solving the problems

In the present invention, the bag is a bag having a check valve having a gas introduction path inside with a stacked structure of two films, and expanding by filling gas through the check valve. However, while the two films are projected from the bag body to the outside in a wide structure in a wide width at a large distance, and at the protruding portion, the two films of the double structure are opened, and the opened gas introduction part is opened. A bag body characterized in that the bag is inflated by aligning the lips with and blowing gas from the mouth.

  According to the above configuration, the gas introduction portion of the check valve has a structure in which two films are superposed and protrudes outward from the bag body at a large distance over a wide width, and the two films in the superposed structure open at the protruding portion. Therefore, it is easy to open by holding the gas introduction part with both fingers, and the greatly opened gas introduction part is almost along the lips, so that the gas introduction is easy by blowing air from the mouth. And surely.

  It is preferable that the gas introducing portion has a size such that the protrusion distance is 1.5 to 4.0 cm and the width is 2.5 to 6.0 cm. If the protrusion distance of the gas introduction part is shorter than 1.5 cm and the width is smaller than 2.5 cm, it does not follow the lips sufficiently when opened, the protrusion distance exceeds 4.0 cm, and the width exceeds 6.0 cm. When the gas introduction part becomes large, it becomes difficult to stably follow the lips, gas introduction becomes difficult, and the appearance is not good.

  The gas blowing side of the check valve in the gas introducing passage spreads outward in the shape of a funnel, and the gas introducing gap at the time of blowing gas from the mouth is formed within the allowable range at the funnel shaped position. By doing so, the gas introduction gap is made larger than the end side within the allowable range.

  INDUSTRIAL APPLICABILITY The bag body of the present invention is appropriately used as various bag bodies for filling a check valve with a straw to fill gas, and is particularly preferably used as a stick balloon.

The invention's effect

  According to the present invention, the stick balloon or the like can be easily inflated at low cost without using a straw, and the problem of environmental pollution can be avoided by not using a plastic straw.

  The top view of the embodiment of the stick balloon of this invention   Top view of an embodiment of a check valve used in a stick balloon of the present invention   Illustration of use of the embodiment of the stick balloon of the present invention

  1 is a plan view of a stick balloon of the present invention, and FIG. 2 is a plan view of a check valve. The stick balloon (bag body) 1 has a check valve 2 hermetically attached to one end of a balloon body (bag body) 4. The surface of the balloon body 4 is appropriately provided with a decorative pattern and a support display.

  The check valve 2 has a structure in which two transparent plastic films 3a and 3b are stacked, and both edges are schiheat-sealed 5 to form a gas introduction path 7 inside and project from the balloon body 4 at one end. A gas introduction part 9 is provided. The check valve 2 has a length L1 of 15 cm, a width W1 from one end side to a central part is thin as 2 cm, and a width W2 of the gas guiding part 9 on the other end side is expanded to a funnel shape and is as large as 4 cm. ing.

  The gas introducing portion 9 has a length L2 of 2.5 cm and has a superposed structure of gas introducing pieces 10 and 11 made of films 3a and 3b, and both edge portions 12 thereof are not heat-sealed 5 but separated from each other. The gas introducing piece 10 is shorter than the gas introducing piece 11 by 5 mm, and a band-shaped mark 13 is attached to the edge thereof. The gas introduction piece 11 is provided with a funnel-shaped welding prevention print 15, and when it is inserted into the balloon body 4 and attached by thermal welding 17, the portion where the welding prevention print 15 is present becomes the ventilation path 18.

  A gas introduction method in the gas introduction unit 9 having the above configuration will be described with reference to FIG. By holding the gas introduction pieces 10 and 11 with the fingers 20 of both hands and widening them to both sides, a gas introduction gap 16 is created, and the lips are aligned so that they are orthogonal to each other, and the air is strongly blown from the mouth to obtain the stick balloon 1. Inflate. The length L3 of the gas introduction gap 16 is set to 2.5 cm. In order to blow air, it is preferable that L3 is formed to be approximately equal to 4 cm which is the width W2 of the gas guide portion 9, but if it is too large, when the air is blown and inflated, the tip side of the valve of the balloon body 4 is compressed with internal air pressure. Due to this, there is a problem of jumping out from the air introduction gap 16. Therefore, the welding prevention print 15 is formed in a funnel shape and the spread position is heat-welded 17, so that the length L3 of the gas introduction gap 16 is made larger than the end side within an allowable range.

  In the above, the gas introduction part 9 constituted by each of the gas introduction pieces 10 and 11 has a large form in which it projects 2.5 cm with a width of 4 cm from the balloon body, and both edge portions 12 of the gas introduction pieces 10 and 11 are heated. Since the seals 5 are separated from each other, the fingers 20 of both hands can easily open the gas introduction pieces 10 and 11. Furthermore, the lips are in a state of being along the gas introducing pieces 10 and 11 with their wide open, and the state of covering the air introducing gap 16 is achieved, whereby the gas is introduced easily and surely. Further, the opening operation of the gas introducing pieces 10 and 11 with a finger is also facilitated by using the band-shaped mark 13 of the gas introducing piece 10 as a guide.

1 Stick balloon (bag)
2 Check valve 3a Film 3b Film 7 Gas introduction path 4 Balloon body (bag body)
9 Gas introduction section

Claims (4)

It is a bag body that has a check valve having a gas introduction path inside with a stacked structure of two films and that swells when gas is filled through the check valve.
The gas introduction part of the check valve is such that the two films project outward from the bag body at a large width in a superposed structure in a superposed structure, and the two superposed films open at the projecting portion,
A bag body, which is inflated by bringing gas into the opened gas introduction part with the lips and blowing gas from the mouth.   The bag body according to claim 2, wherein the protrusion distance is 1.5 to 4.0 cm and the width is 2.5 to 6.0 cm.   The side of the check valve that blows gas in the gas introduction path spreads outward in a funnel shape, and a size within a range in which a gas introduction gap when blowing gas from the mouth to the funnel-shaped position is allowed. The bag body according to claim 1 or 2, which is formed of.   A stick balloon comprising the bag according to claim 1, 2 or 3.

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