A cushioning air bag packaging device resistant to high and low air pressure and its use method

Abstract

The present invention provides a high and low pressure resistant cushioning air bag packaging device and a method of using the same, and relates to the technical field of heavy-duty product cushioning. The scheme adopted is: comprising an outer air column bag and an inner air column bag, wherein the inner air column bag is located inside the outer air column bag, and the outer air column bag and the inner air column bag are both divided into multiple small air bags, and the multiple small air bags in the outer air column bag and the inner air column bag are connected to each other through a constriction, and the diameter of the constriction is smaller than the diameter of the inner air column bag after inflation. When in use, the outer air guide tube is inflated first, and the gas enters the outer air bag through the outer air valve, and then the inner air guide tube is inflated, and the gas enters the inner air bag through the inner air valve. The effects brought about by the present invention are: improving the pressure resistance and environmental pressure resistance of the cushioning air bag, and preventing air leakage, bag bulging and rupture.

Description

Technical Field

[0001] The present invention relates to the technical field of heavy-duty product cushioning, and in particular to a cushioning air bag packaging device capable of resisting high and low air pressures and a method for using the same. Background Art

[0002] Cushioning air bag packaging is increasingly used in the transportation packaging of electronic products due to its low cost, good cushioning performance, and small storage and transportation space. However, it is difficult to use it in the field of heavy precision equipment such as servers. One of the reasons is that the pressure resistance of the cushioning air bag is weak. The fundamental reason is that the environmental pressure and load-bearing capacity have contradictory requirements for the inflation pressure of the cushioning air bag. During the circulation of goods, the cushioning air bag will not only receive the gravity pressure of the product itself, but also the environmental pressure of high temperature, high pressure and high low pressure. The greater the weight of the product itself, the higher the required inflation pressure of the cushioning air bag. However, the higher the inflation pressure, the greater the tension on the plastic film inside the cushioning air bag, and the higher the barrier performance requirements for the film.

[0003] At present, the cushioning air bag packaging circulating in the market is made of single-layer air column bags by hot air and splicing, that is, a single-layer plastic film is hot-aired into a cylindrical or spherical structure, and inflated to form an air column. The pressure difference between the inside and outside of this single-layer air column structure film is very large. Under high temperature and high pressure environment, the molecular movement of the plastic film is accelerated, the barrier performance of the film is reduced, and there is a risk of air leakage; under high altitude and low pressure environment, the pressure difference between the inside and outside of the plastic film increases sharply, and the tension it is subjected to increases accordingly, there is a risk of bag bulging or even film rupture.

[0004] Therefore, it is urgent to improve the pressure resistance and environmental pressure resistance of the cushioning air bag, prevent leakage, bag bulging and rupture, and develop a cushioning air bag packaging device that is resistant to high and low air pressure and a method for using the same. Summary of the invention

[0005] The purpose of the present invention is to improve the pressure resistance and environmental pressure resistance of the cushioning air bag, prevent leakage, bag bulging and rupture, and propose and design a cushioning air bag packaging device resistant to high and low air pressure and its use method.

[0006] On the one hand, the technical solution adopted by the present invention to solve the above technical problems is: a high and low pressure resistant cushioning air bag packaging device, including an outer air column bag and an inner air column bag, the inner air column bag is located inside the outer air column bag, the outer air column bag and the inner air column bag are divided into multiple small air bags, the multiple small air bags in the outer air column bag and the inner air column bag are connected to each other through a constriction, and the diameter of the constriction is smaller than the diameter of the inner air column bag after inflation. Compared with the traditional single-layer air column bag structure, each air column of the cushioning air bag proposed by the present invention is composed of two layers of inner and outer air column bags. By reducing the inflation pressure of the outer air column bag and improving the barrier performance of the material, it is achieved that the cushioning air bag will not leak, swell, or break under different external environmental air pressures. By adjusting the air column bag diameter, total length, number of splicing layers and length of small air bags of the double-layer air column bag, the packaging of packaged objects of different sizes and weights can be achieved, making the application scenarios of the cushioning air bag more extensive. Each airbag is separated into multiple small airbags by hot melting to prevent excessive deformation caused by excessive local pressure. Each small airbag is not completely sealed, forming a shrinkage, so that gas can flow between each airbag, making it easy to inflate.

[0007] Furthermore, the outer air column bag includes an outer air tube and an outer air bag that are connected to each other, and the outer air bags are provided in plurality, and the plurality of outer air bags are arranged at intervals along the outer air tube; the inner air bag column includes an inner air tube and an inner air bag that are connected to each other, and the inner air bag is provided in plurality, and the plurality of inner air bags are arranged at intervals along the inner air tube, the inner air bag is located in the outer air bag, and the inner air tube is located in the outer air tube.

[0008] Furthermore, an outer air valve is provided between the outer air tube and the outer air bag, the outer air valve connects the outer air tube and the outer air bag, and an inner air valve is provided between the inner air tube and the inner air bag, the inner air valve connects the inner air tube and the inner air bag. The outer air tube is connected to the outer air valve for inflating the outer air bag, and the inner air tube is connected to the inner air valve for inflating the inner air bag. Multiple air column bags can share one air tube.

[0009] Furthermore, the structures of the inner air valve and the outer air valve are the same, and both include two layers of film, namely a first film and a second film, and there is a gap between the first film and the second film. One end of the two ultra-thin films extends into the air duct and is welded to both sides of the air duct respectively. The other ends of the two ultra-thin films extend into the airbag with a longer extension length, and are both welded to one side of the side wall of the airbag. The inner air valve serves to guide air and seal the inner airbag, and the outer air valve serves to guide air and seal the outer airbag. The inner airbag and the outer airbag serve to store gas, carry the packaged objects and provide buffering. During air intake, the gas flows from the air duct into the airbag through the small gap between the two ultra-thin films of the air valve. After inflation is completed, the air pressure in the airbag squeezes and closes the small gap between the two films, thereby realizing the function of a closed airbag.

[0010] Furthermore, the outer airbag and the inner airbag are both shrunken by hot melting to divide the outer airbag and the inner airbag into multiple small airbags.

[0011] Furthermore, the outer airbag is made of a wear-resistant, high-barrier material, such as PA (polyamide), PET (polyethylene terephthalate), HDPE (high-density polyethylene), etc. The inflation pressure is relatively low and can be set to 0.03 MPa to 0.06 MPa, which can be adjusted according to actual conditions. The inner airbag is made of a highly elastic material with gas-adjusting function, such as PP (polypropylene), highly elastic PE (highly elastic polyethylene), TPEE (thermoplastic polyester elastomer), etc. The inflation pressure is relatively high and can be set to 0.06 MPa to 0.14 MPa, which can be adjusted according to actual conditions. The outer air column bag is in direct contact with the packaged object and the external environment, so the airbag is made of a wear-resistant, high-barrier material, and because the external air pressure is unstable, there will be high temperature and high pressure or high altitude and low pressure environment, so the inflation pressure of the outer air column is relatively low, and the internal pressure of the air column film is relatively small. During storage and transportation, the outer air column bag mainly protects the inner air column and provides a stable air pressure environment for the inner air column. Secondly, it plays an auxiliary role in buffering and bearing weight. The inner air column bag does not contact the packaged object and the external environment, and is placed inside the outer air column bag. Therefore, the wear resistance and barrier properties of the air column material are lower than those of the outer air column material. In addition, because it is in a relatively stable high-pressure environment provided by the outer air column bag, the inner air column bag is made of a highly elastic material with gas-regulating function. Since the inner air column bag is in a relatively stable high-pressure environment, it plays a major role in buffering and resisting pressure, so the inflation pressure of the inner air column bag is relatively high.

[0012] On the other hand, the present invention also provides a method for using the above-mentioned cushioning air bag packaging device. The cushioning air bag packaging device is in an uninflated state when receiving materials. When in use, the outer air guide tube is inflated first, and the gas enters the outer air bag through the outer air valve. Then, the inner air guide tube is inflated, and the gas enters the inner air bag through the inner air valve.

[0013] It can be seen from the above technical solutions that the present invention has the following advantages:

[0014] This solution provides a cushioning air bag packaging device that is resistant to high and low air pressures and a method for using the same. Compared with the traditional single-layer air column bag structure, each air column of the cushioning air bag packaging device proposed by the present invention is mainly composed of two layers of inner and outer air column bags. By reducing the inflation pressure of the outer air column bag and improving the barrier performance of the material, the cushioning air bag will not leak, swell, or break under different external environmental pressures. By increasing the inflation pressure of the inner air column bag and improving the elasticity and air-adjustability of the material, excellent cushioning performance and load-bearing performance are achieved. The problem of poor leakage, swell, and breakage caused by excessively high inflation pressure of conventional cushioning air bags and the problem of insufficient cushioning performance and load-bearing performance caused by too low inflation pressure are solved. While the cushioning air bag is resistant to the external environmental pressure, the cushioning and load-bearing characteristics of the cushioning air bag are improved, providing technical support for the application of the cushioning air bag in heavy products and extreme environments. By adjusting the diameter, total length, number of splicing layers, and length of the small air bag of the double-layer air column bag, the packaging of packaged objects of different sizes and weights can be achieved, making the application scenarios of the cushioning air bag more extensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of a specific implementation mode of the present invention.

[0017] Figure 2 It is a schematic structural diagram of a single airbag structure according to a specific embodiment of the present invention.

[0018] Figure 3 It is an axonometric view after being cut apart according to a specific embodiment of the present invention.

[0019] In the figure, 1, outer air bag, 2, inner air bag, 3, outer air tube, 4, inner air tube, 5, first film, 6, second film, 7, shrinkage, 8, outer air valve, 9, inner air valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0021] like Figures 1 to 3As shown, this specific embodiment provides a high and low pressure resistant cushioning air bag packaging device, including an outer air column bag and an inner air column bag, the inner air column bag is located inside the outer air column bag, the outer air column bag and the inner air column bag are both divided into multiple small air bags, the multiple small air bags in the outer air column bag and the inner air column bag are connected to each other through a constriction 7, the diameter of the constriction 7 is smaller than the diameter of the inner air column bag after inflation, the outer air bag 1 and the inner air bag 2 are both formed into a constriction 7 by hot melting, and the outer air bag 1 and the inner air bag 2 are divided into multiple small air bags.

[0022] The outer air column bag includes an outer air tube 3 and an outer air bag 1 which are connected to each other. There are multiple outer air bags 1, which are arranged at intervals along the outer air tube 3. The inner air bag column includes an inner air tube 4 and an inner air bag 2 which are connected to each other. There are multiple inner air bags 2, which are arranged at intervals along the inner air tube 4. The inner air bag 2 is located in the outer air bag 1, and the inner air tube 4 is located in the outer air tube 3. An outer air valve 8 is provided between the outer air tube 3 and the outer air bag 1, and the outer air valve 8 connects the outer air tube 3 and the outer air bag 1. An inner air valve 9 is provided between the inner air tube 4 and the inner air bag 2, and the inner air valve 9 connects the inner air tube 4 and the inner air bag 2. The outer air tube 3 is connected to the outer air valve 8 for inflating the outer air bag 1, and the inner air tube 4 is connected to the inner air valve 9 for inflating the inner air bag 2. Multiple air column bags can share one air tube. Specifically, the inner air valve 9 and the outer air valve 8 have the same structure, both including two layers of film, namely the first film 5 and the second film 6, with a gap between the first film 5 and the second film 6. One end of the two films extends into the air duct and is welded to both sides of the air duct respectively, and the other end of the two films extends into the airbag with a long extension length, and is welded to one side of the side wall of the airbag. Both films are ultra-thin films. The inner air valve 9 serves to guide air and seal the inner airbag 2, and the outer air valve 8 serves to guide air and seal the outer airbag 1. The inner airbag 2 and the outer airbag 1 serve to store gas, carry the packaged objects and provide buffering. When air is inhaled, the gas flows from the air duct into the airbag through the small gap between the two ultra-thin films of the air valve. After inflation is completed, the air pressure in the airbag squeezes and closes the small gap between the two films, thereby realizing the closed airbag function.

[0023] In addition, the outer airbag 1 is made of wear-resistant, high-barrier material, such as PA (polyamide), PET (polyethylene terephthalate), HDPE (high-density polyethylene), etc. The inflation pressure is relatively low and can be set to 0.03 MPa to 0.06 MPa, which can be adjusted according to actual conditions. The inner airbag 2 is made of highly elastic material with gas-adjusting function, such as PP (polypropylene), highly elastic PE (highly elastic polyethylene), TPEE (thermoplastic polyester elastomer), etc. The inflation pressure is relatively high and can be set to 0.06 MPa to 0.14 MPa, which can be adjusted according to actual conditions. The outer air column bag is in direct contact with the packaged object and the external environment, so the airbag is made of wear-resistant, high-barrier material, and because the external air pressure is unstable, there will be high temperature and high pressure or high altitude low pressure environment, so the inflation pressure of the outer air column is relatively low, and the internal pressure of the air column film is relatively small. During storage and transportation, the outer air column bag mainly protects the inner air column and provides a stable air pressure environment for the inner air column. Secondly, it plays an auxiliary role in buffering and bearing weight. The inner air column bag does not contact the packaged object and the external environment, and is placed inside the outer air column bag. Therefore, the wear resistance and barrier properties of the air column material are lower than those of the outer air column material. In addition, because it is in a relatively stable high-pressure environment provided by the outer air column bag, the inner air column bag is made of a highly elastic material with gas-regulating function. Since the inner air column bag is in a relatively stable high-pressure environment, it plays a major role in buffering and resisting pressure, so the inflation pressure of the inner air column bag is relatively high.

[0024] The method of use is as follows: the cushioning air bag packaging device is in an uninflated state when receiving materials. When in use, the outer air guide tube 3 is inflated first, and the gas enters the outer air bag 1 through the outer air valve 8, and then the inner air guide tube 4 is inflated, and the gas enters the inner air bag 2 through the inner air valve 9.

[0025] The design principle and effect are as follows: Each air column of the cushioning air bag packaging device is mainly composed of two layers of air column bags, inner and outer. By reducing the inflation pressure of the outer air column bag and improving the barrier performance of the material, the cushioning air bag will not leak, swell or break under different external environmental pressures. By increasing the inflation pressure of the inner air column bag and improving the elasticity and air-adjustability of the material, excellent cushioning performance and load-bearing performance are achieved. The problem of leakage, swell and breakage caused by excessive inflation pressure of conventional cushioning air bags and the problem of insufficient cushioning performance and load-bearing performance caused by too low inflation pressure are solved. While the cushioning air bag resists the external environmental pressure, the cushioning and load-bearing characteristics of the cushioning air bag are improved, providing technical support for the application of cushioning air bags in heavy products and extreme environments. By adjusting the air column bag diameter, total length, number of splicing layers and length of the small air bag of the double-layer air column bag, the packaging of packaged objects of different sizes and weights can be achieved, making the application scenarios of the cushioning air bag more extensive.

[0026] The terms "upper", "lower", "outer side", "inner side" and the like (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish the relative relationship in position without giving qualitative description. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0027] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cushioning air bag packaging device resistant to high and low air pressure, characterized in that: The invention comprises an outer air column bag and an inner air column bag, wherein the inner air column bag is located inside the outer air column bag, and the air pressure in the inner air column bag after inflation is greater than the air pressure in the outer air column bag, and the outer air column bag and the inner air column bag are both divided into multiple sections of small air bags, and the multiple sections of small air bags in the outer air column bag and the inner air column bag are connected to each other through a constriction, and the diameter of the constriction is smaller than the diameter of the inner air column bag after inflation; the outer air column bag comprises an outer air guide tube and an outer air bag that are connected, and a plurality of the outer air bags are provided, and the plurality of outer air bags are arranged at intervals along the outer air guide tube; the inner air column bag comprises an inner air guide tube and an inner air bag that are connected, and a plurality of the inner air bags are provided, and the plurality of inner air bags are arranged at intervals along the inner air guide tube, and the inner air bag is located at In the outer airbag, the inner air tube is located in the outer air tube; the outer airbag is made of wear-resistant, high-barrier material, and the inner airbag is made of highly elastic material with air conditioning function; an outer air valve is arranged between the outer air tube and the outer airbag, and the outer air valve connects the outer air tube and the outer airbag; an inner air valve is arranged between the inner air tube and the inner airbag, and the inner air valve connects the inner air tube and the inner airbag; the inner air valve and the outer air valve have the same structure, both including two layers of film, namely a first film and a second film, and there is a gap between the first film and the second film; the outer airbag and the inner airbag are both formed into shrinkage by hot melting, and the outer airbag and the inner airbag are divided into multiple small airbags.

2. The high and low pressure resistant cushioning air bag packaging device according to claim 1, characterized in that: The outer airbag is made of PA, PET or HDPE.

3. The high and low pressure resistant cushioning air bag packaging device according to claim 2, characterized in that: The inner airbag is made of PP, high-elastic PE or TPEE.

4. The high and low pressure resistant cushioning air bag packaging device according to claim 3, characterized in that: The pressure of the outer airbag after inflation is 0.03 MPa to 0.06 MPa.

5. The high and low pressure resistant cushioning air bag packaging device according to claim 4, characterized in that: The pressure of the inner airbag after inflation is 0.06 MPa to 0.14 MPa.

6. A method for using the high and low pressure resistant cushioning air bag packaging device according to any one of claims 1 to 5, characterized in that: The following steps are involved: The cushioning air bag packaging device is in an uninflated state when receiving materials. When in use, the outer air guide tube is inflated first, and the gas enters the outer air bag through the outer air valve. Then the inner air guide tube is inflated, and the gas enters the inner air bag through the inner air valve.

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