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

Abstract

The utility model discloses an inflation channel closed pressurization type inflation air bag for packaging and transportation, which belongs to the technical field of inflation air bags for packaging and transportation, and comprises a public inflation air channel and a plurality of air bag bodies arranged side by side, the public inflation air channel is communicated with the air bag bodies, the air bag bodies are provided with check air valves A, and the check air valves A are communicated with the public inflation air channel. 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] This utility model relates to the field of inflatable airbag technology, specifically to an inflatable airbag for packaging and transportation. Background Technology

[0002] Existing inflatable airbags for packaging and transportation, such as the utility model patent with publication number CN207497301U, consist of an upper film, a lower film, and a valve film. The valve film is a single-layer film located between the upper and lower films. 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 a second heat-sealing line, which is a straight line. An irregular air-inlet heat-sealing pattern is provided below the first heat-sealing line, which partially adheres the valve film to the lower film. A third heat-sealing line is heat-pressed at the lower end of the air column bag. The third heat-sealing line, together with the first and second heat-sealing lines, forms an air-storing column. The air-storing column has at least one row of heat-sealing points, and the air-storing column can form a three-dimensional packaging bag through a series of bends at the heat-sealing points. The single-layer valve membrane air column bag without a heat-resistant ink layer is inflated using an automatic inflation machine, enabling precise individual inflation of each air column. Simultaneous inflation and heat sealing create an inflation heat-sealing line that bonds the upper film, lower film, and valve membrane, further preventing gas leakage and achieving a better airtightness. The first heat-sealing line bonds the valve membrane to the lower film, while the corresponding air inlet heat-sealing pattern partially bonds the valve membrane to the upper film, also completing the automatic inflation and airtightness function of the air column. The inflation principle of this embodiment is as follows: A single-layer air valve membrane air column bag without a heat-resistant ink layer is placed on an automatic inflation machine. The top of the upper and lower films are separated, and the inflation nozzle of the automatic inflation machine is inserted. The inflation port on the inflation nozzle is aligned with the air inlet of the air column. The automatic inflation machine drives the pressure roller through a linkage device. The pressure roller drives the air column bag forward at a constant speed. When the air column passes the inflation nozzle, the gas enters the air inlet heat-sealing pattern from the position of the first heat-sealing line, between the air valve membrane and the lower film. The air inlet heat-sealing pattern partially adheres the air valve membrane and the lower film. The gas enters the air column through the unadhesive pore channels. As the inflation volume saturates, due to the gas pressure and the adhesion between the films, the air inlet space between the air valve membrane and the lower film becomes smaller and smaller until they are completely adhered, locking the air inlet. At the same time, since the air valve membrane and the upper film are adhered, the gas cannot escape from between the air valve membrane and the upper film, thus realizing the automatic inflation and air-locking function.

[0003] The existing technology, represented by the aforementioned patent documents, relies on the opening and closing of a single valve membrane to achieve airtightness through the inflation channel between the valve membrane and the lower membrane. This structure leads to air leakage after the inflatable airbag has been inflated and stored for a certain period of time. How to solve the problem of air leakage from the membrane valve in existing packaging inflatable airbags is a problem that needs to be solved for packaging and transportation inflatable airbags. Utility Model Content

[0004] The purpose of this invention is to provide an inflatable airbag for packaging and transportation with good airtightness and air-sealing pressure.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An inflatable airbag for packaging and transportation with a closed-loop pressure system includes a common inflation channel and multiple airbag bodies arranged side by side. The common inflation channel is connected to the airbag bodies. Each airbag body is equipped with a check valve A. Airflow enters the airbag body through the common inflation channel and check valve A. The common inflation channel is a sealed cavity. A check valve B is also provided on the common inflation channel. Airflow enters the common inflation channel through check valve B. The check valve B is used to prevent gas leakage from the common inflation channel.

[0007] Further, the device includes an airbag membrane A and an airbag membrane B, which are stacked together. A first transverse thermocompression cavity closure line, a second transverse thermocompression cavity closure line, a third transverse thermocompression cavity closure line, and multiple longitudinal thermocompression cavity closure lines are provided on the surfaces of the airbag membranes A and B. One end of each longitudinal thermocompression cavity closure line is connected to the third transverse thermocompression cavity closure line, and the other end is connected to the second transverse thermocompression cavity closure line. The common inflation airway is formed between the first and second transverse thermocompression cavity closure lines, and the airbag body is formed between adjacent longitudinal thermocompression cavity closure lines. The airbag body is perpendicular to the common inflation airway.

[0008] Furthermore, the check valve A and check valve B are diaphragm valves.

[0009] Furthermore, the two ends of the common inflation channel are sealed by heat-sealing lines, and the check valve B is located on the closing line of the first transverse heat-pressing cavity on the side of the common inflation channel.

[0010] Furthermore, multiple thermoplastic blocks are distributed in the common inflation channel, which connect airbag membrane A and airbag membrane B together.

[0011] Furthermore, the air inlet of the airbag is located between two thermostatic blocks.

[0012] Furthermore, one end of the common inflation channel is sealed by a heat-sealing line, and the check valve B is located at the other end of the common inflation channel.

[0013] The beneficial effects of this utility model are as follows:

[0014] This application adds a check valve B to the common inflation channel of the inflatable airbag. After inflation is completed, the gas in the common inflation channel is locked by the check valve B, so that the common inflation channel is filled with gas at a certain pressure, thereby achieving the purpose of secondary airlocking of the airbag and solving the problem of air leakage in the inflatable airbag. Attached Figure Description

[0015] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort:

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0017] Figure 2 for Figure 1 The cross-sectional view shown;

[0018] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0019] In the diagram: 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 thermocompression chamber closure line; 8. Second transverse thermocompression chamber closure line; 9. Third transverse thermocompression chamber closure line; 10. Longitudinal thermocompression chamber closure line; 11. Heat seal line; 12. Heat-pressing block; 13. Air inlet of the airbag body. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward", "reverse", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Example 1:

[0023] like Figure 1 , 2 As shown, an inflatable airbag for packaging and transportation with a closed-loop pressure is provided, comprising a common inflation channel 1 and multiple airbag bodies 2 arranged side by side. The common inflation channel 1 is connected to the airbag bodies 2. Each airbag body 2 is provided with a check valve A3. Airflow enters the airbag body 2 through the common inflation channel 1 and the check valve A3. The common inflation channel 1 is a closed cavity. A check valve B4 is provided on the common inflation channel 1. Airflow enters the common inflation channel 1 through the check valve B4. The check valve B4 is used to prevent gas from leaking out of the common inflation channel 1.

[0024] Specifically, an inflatable airbag for packaging and transportation with a closed-loop pressure system includes an airbag membrane A5 and an airbag membrane B6, which are stacked together. A first transverse hot-pressing cavity closure line 7, a second transverse hot-pressing cavity closure line 8, a third transverse hot-pressing cavity closure line 9, and multiple longitudinal hot-pressing cavity closure lines 10 are provided on the surfaces of the airbag membranes A5 and B6. One end of each longitudinal hot-pressing cavity closure line 10 is connected to the third transverse hot-pressing cavity closure line 9, and the other end is connected to the second transverse hot-pressing cavity closure line 8. A common inflation channel 1 is formed between the first transverse hot-pressing cavity closure line 7 and the second transverse hot-pressing cavity closure line 8. An airbag body 2 is formed between adjacent longitudinal hot-pressing cavity closure lines 10, and the airbag body 2 is perpendicular to the common inflation channel 1.

[0025] The check valves A3 and B4 are diaphragm valves.

[0026] One end of the common inflation channel 1 is sealed by a heat-sealing line 11, and the check valve B4 is located at the other end of the common inflation channel 1.

[0027] Example 2:

[0028] like Figure 3 As shown, the difference between this embodiment of an inflatable airbag for packaging and transportation with a closed-loop pressurized inflatable channel and embodiment 1 is that: both ends of the common inflatable airway 1 are sealed by heat-sealing line 11, and the check valve B4 is located on the first transverse heat-pressurized cavity closure line 7 on the side of the common inflatable airway 1.

[0029] Multiple thermostatic blocks 12 are distributed in the common inflation airway 1, which connect the airbag membrane A5 and the airbag membrane B6 together. The air inlet 13 of the airbag body is located between two thermostatic blocks 12.

[0030] Working principle: This application adds a check valve B to the common inflation channel of the inflatable airbag. After inflation is completed, the gas in the common inflation channel is locked by the check valve B, so that the common inflation channel is filled with gas at a certain pressure, which has the function of air-locking and pressurizing. The check valve B works in conjunction with the check valve A to achieve the purpose of secondary air-locking of the airbag, so as to solve the problem of air leakage in the inflatable airbag.

[0031] Furthermore, the different embodiments or examples described herein, as well as the features of those embodiments or examples, may be combined and integrated without contradiction. Although embodiments of the present invention have been shown and described above, it is understood that these embodiments are exemplary and should not be construed as limiting the present invention.

Claims

1. An inflatable airbag for packaging and transportation with a closed-loop pressure system, characterized in that: It includes a common inflation channel and multiple airbags arranged side by side. The common inflation channel is connected to the airbags. Each airbag is equipped with a check valve A. Airflow enters the airbag through the common inflation channel and check valve A. The common inflation channel is a closed cavity. A check valve B is provided on the common inflation channel. Airflow enters the common inflation channel through check valve B. The check valve B is used to prevent gas from leaking out of the common inflation channel.

2. The inflatable airbag for packaging and transportation with a closed air passage as described in claim 1, characterized in that: The device includes an airbag membrane A and an airbag membrane B, which are stacked together. A first transverse thermocompression cavity closure line, a second transverse thermocompression cavity closure line, a third transverse thermocompression cavity closure line, and multiple longitudinal thermocompression cavity closure lines are provided on the surfaces of the airbag membranes A and B. One end of each longitudinal thermocompression cavity closure line is connected to the third transverse thermocompression cavity closure line, and the other end is connected to the second transverse thermocompression cavity closure line. A common inflation airway is formed between the first and second transverse thermocompression cavity closure lines. An airbag body is formed between adjacent longitudinal thermocompression cavity closure lines, and the airbag body is perpendicular to the common inflation airway.

3. The inflatable airbag for packaging and transportation with a closed air passage as described in claim 2, characterized in that: The check valve A and check valve B are diaphragm valves.

4. The inflatable airbag for packaging and transportation with a closed air passage as described in claim 3, characterized in that: Both ends of the common inflation channel are sealed by heat-sealing lines, and the check valve B is located on the closing line of the first transverse thermo-pressurized cavity on the side of the common inflation channel.

5. The inflatable airbag for packaging and transportation with a closed air passage as described in claim 4, characterized in that: Multiple thermoplastic blocks are distributed in the common inflation channel, which connect airbag membrane A and airbag membrane B together.

6. The inflatable airbag for packaging and transportation with a closed air passage as described in claim 5, characterized in that: The air inlet of the airbag is located between two thermostatic blocks.

7. The inflatable airbag for packaging and transportation with a closed air passage as described in claim 3, characterized in that: One end of the common inflation channel is sealed by a heat-sealing line, and the check valve B is located at the other end of the common inflation channel.

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