Airtight pressurizing type inflatable air bag for packaging and transportation of inflation channel

Abstract

The invention discloses an inflation channel air closing and pressurizing type inflation air bag for packaging and transportation, and belongs to the technical field of inflation air bags for packaging and transportation, the inflation channel air closing and pressurizing type inflation air bag for packaging and transportation comprises a public inflation channel and a plurality of air bag bodies arranged side by side, the public inflation channel is communicated with the air bag bodies, and check air valves A are arranged on the air bag bodies; air flow enters the air bag body through a public inflation air channel and a non-return air valve A, the public inflation air channel is a closed cavity, a non-return air valve B is arranged on the public inflation air channel, the air flow enters the public inflation air channel through the non-return air valve B, and the non-return air valve B is used for preventing air in the public inflation air channel from leaking. The non-return air valve B is additionally arranged on the public inflation air channel of the inflation air bag, and after inflation is completed, air in the public inflation air channel is locked by the non-return air valve B, so that the public inflation air channel is filled with air with certain pressure, the purpose of secondary air locking and closing of the air bag is achieved, and the problem of air leakage of the inflation air bag is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of inflatable airbags, and more particularly to an inflatable airbag for packaging and transportation. Background Art

[0002] The inflatable airbags for packaging and transportation in the prior art, such as the utility model patent with the publication number CN207497301U, include an upper film, a lower film and a valve film. The valve film is a single-layer film and is located between the upper film and the lower film. A first heat-sealing line is heat-sealed at the top of the valve film. The first heat-sealing line adheres the valve film to the upper film and is perpendicular to the second heat-sealing line at the same time. The second heat-sealing line is a straight line. An irregular air intake heat-sealing is provided below the first heat-sealing line. The air intake heat-sealing pattern locally adheres the valve film to the lower film. A third heat-sealing line is hot-pressed at the lower end of the air column bag. The third heat-sealing line and the first heat-sealing line and the second heat-sealing line form an air storage air column. The air storage air column is provided with at least one row of heat-sealing points, and a series of bends of the air storage air column passing through the heat-sealing points can form a three-dimensional packaging bag. The single-layer valve film air column bag without a heat-resistant ink layer is inflated by an automatic inflator, which can realize precise inflation of each air column separately, and heat-seal while inflating. After inflation, an inflation heat-sealing line is formed to adhere the upper film, the lower film and the valve film, further preventing gas leakage and achieving a better airtightness and gas-locking effect. The first heat-sealing line can adhere the valve film to the lower film, and the corresponding air intake heat-sealing pattern locally adheres the valve film to the upper film, and the air column automatic inflation and gas-locking function can also be completed. The inflation principle of the first embodiment is as follows: Place the single-layer valve film air column bag without a heat-resistant ink layer on the automatic inflator, separate the tops of the upper film and the lower film, insert the inflation nozzle of the automatic inflator, align the inflation port on the inflation nozzle with the air inlet of the air storage air column. The automatic inflator drives the pressure roller through a linkage device, and the pressure roller drives the air column bag to move forward at a constant speed. When the air storage air column passes through the inflation nozzle, the gas enters from the position of the first heat-sealing line, passes between the valve film and the lower film and enters the position of the air intake heat-sealing pattern. The air intake heat-sealing pattern locally adheres the valve film to the lower film, and the gas enters the air storage air column through the non-adhered pore channels. As the inflation amount reaches saturation, due to the pressure of the gas and the viscosity between the films, the air intake space between the valve film and the lower film becomes smaller and smaller until they are completely adhered, locking the air inlet. At the same time, since the valve film is adhered to the upper film, the gas cannot escape between the valve film and the upper film, thus realizing the automatic inflation and gas-locking function.

[0003] In the prior art represented by the above patent literature, since the inflation channel between the valve film and the lower film realizes airtightness through the opening and closing of a single valve film, this structural form will cause air leakage after the inflatable airbag is inflated and stored for a certain period of time. How to solve the air leakage of the existing packaging inflatable airbag from the membrane valve is a problem that needs to be solved by the inflatable airbags for packaging and transportation at present. Summary of the Invention

[0004] The object of the present invention is to provide an inflatable airbag for packaging and transportation with good airtight performance and airtight pressurization in the inflatable channel.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: An inflatable airbag for packaging and transportation with airtight pressurization in the inflatable channel includes a common inflatable air duct and a plurality of airbag bodies arranged side by side. The common inflatable air duct is communicated with the airbag bodies. A check valve A is provided on the airbag body, and air flows through the common inflatable air duct and enters the airbag body through the check valve A. The common inflatable air duct is a closed cavity, and a check valve B is provided on the common inflatable air duct. Air flows through the check valve B and enters the common inflatable air duct. The check valve B is used to prevent the gas in the common inflatable air duct from leaking out.

[0006] Further, it includes an airbag film A and an airbag film B. The airbag film A and the airbag film B are stacked together. A first transverse hot-pressing cavity closing line, a second transverse hot-pressing cavity closing line, a third transverse hot-pressing cavity closing line and a plurality of longitudinal hot-pressing cavity closing lines are provided on the surfaces of the airbag film A and the airbag film B. One end of the plurality of longitudinal hot-pressing cavity closing lines is connected to the third transverse hot-pressing cavity closing line, and the other end is connected to the second transverse hot-pressing cavity closing line. The common inflatable air duct is formed between the first transverse hot-pressing cavity closing line and the second transverse hot-pressing cavity closing line. The airbag bodies are formed between adjacent longitudinal hot-pressing cavity closing lines, and the airbag bodies are perpendicular to the common inflatable air duct.

[0007] Further, the check valve A and the check valve B are membrane type air valves.

[0008] Further, both ends of the common inflatable air duct are sealed by heat-sealing lines, and the check valve B is provided on the first transverse hot-pressing cavity closing line on the side of the common inflatable air duct.

[0009] Further, a plurality of hot-pressing blocks are distributed in the common inflatable air duct, and the hot-pressing blocks connect the airbag film A and the airbag film B together.

[0010] Further, the air inlet of the airbag body is located between two hot-pressing blocks.

[0011] Further, one end of the common inflatable air duct is sealed by a heat-sealing line, and the check valve B is provided at the other end of the common inflatable air duct.

[0012] The beneficial effects of the present invention are as follows: A check valve B is added to the common inflation airway of the inflatable airbag in this application. After inflation is completed, the gas in the common inflation airway is locked by the check valve B, so that the common inflation airway is filled with gas at a certain pressure, thereby achieving the purpose of secondary air locking and closing of the airbag to solve the problem of air leakage of the inflatable airbag. Description of the Drawings

[0013] The present invention will be further described with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the following drawings: Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention; Figure 2 is Figure 1 the cross-sectional view shown; Figure 3 It is a schematic structural diagram of Embodiment 2 of the present invention.

[0014] In the figure: 1. Common inflation airway; 2. Airbag body; 3. Check valve A; 4. Check valve B; 5. Airbag membrane A; 6. Airbag membrane B; 7. First transverse hot pressing cavity closing line; 8. Second transverse hot pressing cavity closing line; 9. Third transverse hot pressing cavity closing line; 10. Longitudinal hot pressing cavity closing line; 11. Heat sealing line; 12. Hot pressing block; 13. Air inlet of the airbag body. Detailed Embodiments

[0015] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0016] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward rotation", "reverse rotation", "axial direction", "radial direction", "circumferential direction", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0017] Embodiment 1: Such as Figure 1 、 2As shown in the figure, an inflatable airbag for packaging and transportation with an airtight inflation channel and pressure boost includes a common inflation airway 1 and a plurality of airbag bodies 2 arranged side by side. The common inflation airway 1 is connected to the airbag bodies 2. A check valve A3 is provided on the airbag body 2. Airflow enters the airbag body 2 through the common inflation airway 1 via the check valve A3. The common inflation airway 1 is an airtight cavity. A check valve B4 is provided on the common inflation airway 1. Airflow enters the common inflation airway 1 through the check valve B4. The check valve B4 is used to prevent the gas in the common inflation airway 1 from leaking out.

[0018] Specifically, an inflatable airbag for packaging and transportation with an airtight inflation channel and pressure boost includes an airbag film A5 and an airbag film B6. The airbag film A5 and the airbag film B6 are stacked together. On the surfaces of the airbag film A5 and the airbag film B6, there are a first transverse hot-pressed cavity closing line 7, a second transverse hot-pressed cavity closing line 8, a third transverse hot-pressed cavity closing line 9, and a plurality of longitudinal hot-pressed cavity closing lines 10. One end of the plurality of longitudinal hot-pressed cavity closing lines 10 is connected to the third transverse hot-pressed cavity closing line 9, and the other end is connected to the second transverse hot-pressed cavity closing line 8. The common inflation airway 1 is formed between the first transverse hot-pressed cavity closing line 7 and the second transverse hot-pressed cavity closing line 8. The airbag bodies 2 are formed between adjacent longitudinal hot-pressed cavity closing lines 10. The airbag bodies 2 are perpendicular to the common inflation airway 1.

[0019] The check valve A3 and the check valve B4 are membrane-type air valves.

[0020] One end of the common inflation airway 1 is sealed by a heat-sealing line 11. The check valve B4 is provided at the other end of the common inflation airway 1.

[0021] Embodiment 2: As Figure 3 shown in the figure, compared with Embodiment 1, the difference of an inflatable airbag for packaging and transportation with an airtight inflation channel and pressure boost in this embodiment is that both ends of the common inflation airway 1 are sealed by a heat-sealing line 11, and the check valve B4 is provided on the first transverse hot-pressed cavity closing line 7 on the side of the common inflation airway 1.

[0022] A plurality of hot-pressing blocks 12 are distributed in the common inflation airway 1. The hot-pressing blocks 12 connect the airbag film A5 and the airbag film B6 together. The air inlet 13 of the airbag body is located between two hot-pressing blocks 12.

[0023] Working principle: A check valve B is added to the common inflation airway of the inflatable airbag in this application. After inflation is completed, the gas in the common inflation airway is locked by the check valve B, so that the common inflation airway is filled with gas at a certain pressure, having the function of airtight pressurization. The check valve B cooperates with the check valve A to achieve the purpose of secondary air locking and airtightness of the airbag, so as to solve the problem of air leakage of the inflatable airbag.

[0024] In addition, without contradiction, the different embodiments or examples described in this specification and the features of different embodiments or examples can be combined and combined. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limiting the present invention.

Claims

1. An inflatable airbag for packaging and transportation with an air-closing and pressurizing air channel, characterized in that: It includes a common inflation airway and a plurality of airbag bodies arranged side by side, the common inflation airway is connected with the airbag bodies, the airbag bodies are provided with a check valve A, the airflow passes through the common inflation airway and enters the airbag bodies via the check valve A, the common inflation airway is a closed cavity, the common inflation airway is provided with a check valve B, the airflow enters the common inflation airway via the check valve B, and the check valve B is used to prevent the gas in the common inflation airway from leaking out.

2. The inflatable airbag for packaging and transportation with closed air-inflation channel and pressurized type according to claim 1, characterized in that: It includes an airbag membrane A and an airbag membrane B, which are stacked together. A first transverse hot-pressing cavity closing line, a second transverse hot-pressing cavity closing line, a third transverse hot-pressing cavity closing line and multiple longitudinal hot-pressing cavity closing lines are provided on the surfaces of the airbag membrane A and the airbag membrane B. One end of the multiple longitudinal hot-pressing cavity closing lines is connected to the third transverse hot-pressing cavity closing line, and the other end is connected to the second transverse hot-pressing cavity closing line. A common inflation airway is formed between the first transverse hot-pressing cavity closing line and the second transverse hot-pressing cavity closing line. An airbag body is formed between adjacent longitudinal hot-pressing cavity closing lines, and the airbag body is perpendicular to the common inflation airway.

3. The inflatable airbag for packaging and transportation with closed air-inflation channel and pressurized type according to claim 2, characterized in that: The check valve A and the check valve B are diaphragm valves.

4. The inflatable airbag for packaging and transportation with closed air-inflation channel and pressurized type according to claim 3, characterized in that: Both ends of the common air-inflating airway are closed by heat-sealing lines, and the check valve B is arranged on the first transverse heat-pressing cavity closing line on the side of the common air-inflating airway.

5. The inflatable airbag for packaging and transportation with closed air-inflation channel and pressurized type according to claim 4, characterized in that: A plurality of heat-pressing blocks are distributed in the common inflation airway, and the heat-pressing blocks connect the airbag membrane A and the airbag membrane B together.

6. The inflatable airbag for packaging and transportation with closed air filling channel and pressurized air filling channel according to claim 5, characterized in that: The air inlet of the airbag body is located between two hot pressing blocks.

7. The inflatable airbag for packaging and transportation with closed air-inflation channel and pressurized type according to claim 3, characterized in that: One end of the common inflation airway is closed by a heat-sealed line, and the check valve B is arranged at the other end of the common inflation airway.

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