Composite air cushion structure and heat preservation bag
The composite air cushion structure combining metal and plastic layers solves the problems of poor heat preservation and shock absorption in insulated bags, achieving longer-lasting heat preservation and shock absorption.
Patent Information
- Application Number
- CN202520162531.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Existing insulated bags are insufficient to meet the needs of longer-term insulation and lack shock absorption and drop protection.
The composite air cushion structure combines metal and plastic layers with air cavities, forming multiple interconnected air cavities and inflation channels. The metal layer provides thermal insulation, while the air cavities provide cushioning and shock absorption.
It improves thermal insulation performance by 12%-15%, achieving a longer period of thermal insulation effect, while also having a shock absorption function, eliminating the need for additional cushioning materials and making it easy to use.
Smart Images
Figure CN223736736U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of heat preservation package, especially a composite air cushion structure and heat preservation bag. BACKGROUND
[0002] The heat preservation bag is widely used in the express transportation of food, fruits and vegetables, and the existing heat preservation bag generally adheres aluminum foil on the surface of the plastic foam layer to form the shape of a bag as a whole, puts the heat preservation object into the bag, and seals the bag opening in a folding mode or a bonding mode to achieve the heat preservation effect within a certain time.
[0003] With the development of the requirement of life convenience, the heat preservation effect of the heat preservation bag is required higher and higher, and it has practical significance to realize longer heat preservation. UTILITY MODEL CONTENT
[0004] In view of the above problems, the utility model provides a composite air cushion structure and heat preservation bag, which combines the metal layer and the plastic layer air cavity, improves the heat preservation effect, and has the functions of shock absorption and drop resistance.
[0005] To solve the technical problem, the utility model takes the following scheme:
[0006] A composite air cushion structure comprises at least one metal layer, the metal layer is connected with an upper plastic layer and a lower plastic layer which are stacked in sequence, wherein the upper plastic layer and the lower plastic layer enclose a plurality of interconnected air cavities and inflation channels, and the inflation channel is arranged on one side of the air cavity and communicates with the air cavity.
[0007] Further, one side of the upper plastic layer and / or the lower plastic layer is connected with the metal layer.
[0008] Further, the number of the metal layer is one or more than one; the metal layer is a metal composite layer, which comprises at least one metal layer A and at least one PE layer.
[0009] Further, the thickness of the metal layer is 5-30 microns.
[0010] Further, the upper plastic layer and the lower plastic layer are any one of a polyethylene layer, a polypropylene layer, a polyvinyl chloride layer, a polyamide layer and a polystyrene layer.
[0011] Further, the thickness of the upper plastic layer and the lower plastic layer is 5-100 microns.
[0012] Further, the upper plastic layer and the lower plastic layer are high-density polyethylene layers.
[0013] Further, the height of the air cavity in the inflated state is 0.5-6 cm, and the edge of the composite air cushion structure is provided with a sealing line.
[0014] Further, the metal layer is aluminum foil.
[0015] Based on the same inventive concept, the utility model also provides a heat preservation bag which is enclosed in a bag shape by the composite air cushion structure.
[0016] Further, the bag opening of the heat preservation bag is provided with an adhesive layer for sealing the bag opening.
[0017] By adopting the foregoing technical scheme, compared with the prior art, the utility model adopts the combination of the metal layer and the air cavity, the heat preservation performance is improved by 12%-15%, and more durable heat preservation effect can be achieved. Meanwhile, due to the buffering effect of the air cavity, the shock absorption function can be achieved, and other buffering materials need not be additionally added, and the use is very convenient.
[0018] Further, the composite air cushion structure in the utility model can be stored and transported in a roll, the storage and transportation cost is low, instant inflation is carried out before use, the operation is simple, and the utility model has a good market application prospect. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is an exploded schematic view of the composite air cushion structure provided by the utility model embodiment 1;
[0020] Figure 2 is a top view structural schematic view of the composite air cushion structure provided by the utility model embodiment 1;
[0021] Figure 3 is a three-dimensional schematic view of the composite air cushion structure in an inflated state provided by the utility model embodiment 1;
[0022] Figure 4 is a side view structural schematic view of the composite air cushion structure in an inflated state provided by the utility model embodiment 1;
[0023] Figure 5 is a planar structural schematic view of the composite air cushion provided by the utility model embodiment 1;
[0024] Figure 6 is a heat preservation performance test result view provided by the utility model embodiment 2. DETAILED DESCRIPTION
[0025] The technical solutions of the present application will be described clearly and completely in the following with reference to the drawings and specific embodiments, but those skilled in the art will understand that the following described embodiments are part of the embodiments of the present application, rather than all the embodiments, and are only used to illustrate the present application, and should not be regarded as limiting the scope of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. The specific conditions are not specified in the embodiments, and the conventional conditions or the conditions recommended by the manufacturer are used. The reagents or instruments used are not specified by the manufacturer, and are conventional products that can be purchased on the market.
[0026] In the description of the present application, it should be pointed out that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the devices or elements indicated to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0027] In the description of the present application, it should be pointed out that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0028] Embodiment 1
[0029] As Figures 1-5 A composite air cushion structure, comprising an upper metal layer 1, an upper plastic layer 2, a lower plastic layer 3 and a lower metal layer 4 stacked in turn from top to bottom, wherein the upper plastic layer 2 and the lower plastic layer 3 enclose a plurality of interconnected air cavities 5 and inflation channels 6, the inflation channel 6 is arranged on one side of the air cavity 5 and communicates with the air cavity 5.
[0030] Two metal layers are used in this embodiment, and in other embodiments, it can also be one metal layer, for example, connecting aluminum foil on one side of the upper plastic layer. This single-layer metal layer design also has good heat preservation effect.
[0031] It can be understood that the metal layer is a metal composite layer, for example, composed of at least one metal layer A + at least one PE layer, at which time the metal layer A can adopt, for example, an aluminized layer, an aluminum foil, and the like, and the hierarchical structure is various and changeable and is not limited. More specifically, the metal composite layer can be an aluminum foil + a PE layer, a PE layer + an aluminum foil + a PE layer, or an aluminized layer + a PET layer + a PE layer, or a PE layer + an aluminized layer + a PET layer + a PE layer, and the like.
[0032] Reference Figure 2 In the embodiment, the air cavity 5 is circular, a plurality of air cavities 5 are communicated, and the inflation channel 6 is located at the left side of the air cavity 5. It can be understood that the inflation channel 6 has an opening for the running gas to enter in the initial state, and the upper plastic layer 2 and the lower plastic layer 3 are adhered to form a seal at the opening by using a hot pressing method after the inflation is completed.
[0033] It can be understood that the thickness of the air cavity in the un-inflated state can be ignored or less than 10 mm, and the shape can be linear, heart-shaped, triangular, quadrilateral, pentagonal, hexagonal, and the like, and the shape of the air cavity is irrelevant to the heat preservation performance. The gap between the air cavities can be 1 mm, 3 mm, 5 mm, 10 mm, and the like.
[0034] The utility model does not limit the thickness ratio of the metal layer and the plastic layer, and the thickness of the two does not affect each other. For example, the thickness of the metal layer can be 5 microns, 15 microns, 20 microns, 25 microns, or 30 microns. Similarly, the thickness of the plastic layer can also be 5 microns, 8 microns, 12 microns, 15 microns, 20 microns, 25 microns, 30 microns, 50 microns, or 100 microns. Therefore, the overall thickness is small when not inflated, making it easier to store and reducing transportation costs.
[0035] Reference Figure 3 and Figure 4 The overall composite air cushion structure is rectangular, and since the air cavities 5 are full of gas, the air cavities 5 are in a row of calabash shape, and the gas inlet of the inflation channel 6 is heat-sealed after inflation. On the opposite side of the inflation channel 6, the plastic layer can be heat-sealed to form an extension section, or the outer metal layer can extend outward to form an extension section. Similarly, on the two adjacent sides of the inflation channel 6, a certain length of extension section can be formed, which is convenient for later surrounding to form a bag shape.
[0036] Reference Figure 5 From the top view, the line connecting the centers of the three closest gas cavities 31a, 31b, and 31c in two adjacent rows of the gas cavities forms an equilateral triangle. The gas cavity distribution mode of the equilateral triangle can make the paper air cushion play a better shockproof effect, thereby playing a more comprehensive protection role on the product.
[0037] In some preferred embodiments, the diameter of the air cavity is 3.5-5.0 cm, and the diameter of the air cavity can be 3.5 cm, 4.0 cm, 4.5 cm, 5.0 cm, or any point value between any two of the above. Preferably, the bubble height after the air cavity is inflated is below 3.0 cm, and the bubble height can be 3.0 cm, 2.5 cm, 2.0 cm, 1.5 cm, 1.0 cm, 0.5 cm, or any point value between any two of the above. Flexible control of the bubble height can adapt to different product shockproof needs. The metal layer provides a certain stiffness, and the air cavity of the plastic layer can disperse the stress and play a shock-absorbing effect. Preferably, the number of inflation channels is even to make the support better.
[0038] The contact angle of the inflated air cavity with the plane can be 15°, 30°, or 45°, and the overall distribution of the air cavity can be in a row, at a certain distance, or cross-distributed, determined by the size of the air cavity in a certain area. For example, 20-100 air cavities can be distributed in an area of 1 m 2 It can be understood that the more the number of air cavities, the greater the arrangement density, and higher heat insulation can be achieved to reduce heat conduction convection.
[0039] The composite air cushion structure is enclosed into a bag shape, for example, 2 pieces of composite air cushion structure can be combined, and the inflation channel 6 can be used as the bag opening sealing position. Preferably, an adhesive layer is provided at the bag opening sealing position. When in use, the food is placed in the bag, and the bag opening is bent and adhered to the outer surface of the bag by the adhesive layer. The metal layer can be inward or outward, and it is not limited which side is the inner side. In this embodiment, the plastic layer is inward. This heat preservation bag can preserve freshness and heat for a long time. The outer metal layer can build a solid barrier, and the air cavity formed by the inner plastic layer can isolate direct contact of heat, reducing heat conduction and convection. More importantly, the air cavities connected to each other have a shock-absorbing function and can protect the internal articles from damage in all directions.
[0040] In the finished product of the composite air cushion structure described above, the air cavity 5 is in an empty state and has not been inflated with enough gas to form a certain cavity structure. In an ideal state, the upper plastic layer 2 and the lower plastic layer 3 are tightly attached. Therefore, the finished composite air cushion structure can be wound on a reel for convenient transportation and storage, and the storage and transportation cost is low. Before use, the air cavity 5 is inflated in real time by using an inflation device such as an air cushion machine, and a certain shaped gas chamber is formed, which can form a heat preservation bag of any shape.
[0041] Embodiment 2:
[0042] The composite air cushion structure comprises a metal layer connected with an upper plastic layer and a lower plastic layer which are stacked in sequence, wherein the upper plastic layer and the lower plastic layer enclose a plurality of air cavities and inflation channels which are connected in sequence, and the air cavities are circular in shape. The inflation channels are arranged on one side of the air cavities and are connected with the air cavities. The metal layer is an aluminum foil with a thickness of 10 microns. The upper plastic layer and the lower plastic layer are HDPE layers with a thickness of 10 microns.
[0043] The heat preservation bag formed by the composite air cushion structure is tested as follows: one 600ml ice bag is placed in the heat preservation bag at an ambient temperature of 25℃, and then the heat preservation bag is placed in a foam box (EPS foam box made of expandable polystyrene), and two 200ml ice bags are added in the foam box for testing. As a control, a commercially available heat preservation bag (with a white plastic foam inner layer and an aluminum foil outer layer) is used for the same operation.
[0044] The test results are shown in Table 1. Figure 6 It can be seen that the temperature in the foam box increases from 0℃ to 5℃, and the heat preservation bag formed by the composite air cushion structure of the utility model takes 44 hours, while the commercially available heat preservation bag takes 38 hours.
[0045] Further tests show that as the thickness of the aluminum foil increases, the heat preservation bag formed by the composite air cushion structure of the utility model can take up to 50h or more to increase the temperature from 0℃ to 5℃, and the heat preservation performance is improved by 12%-15% compared with the commercially available heat preservation bag.
[0046] This embodiment is only exemplary, and the utility model is not limited to this structure. Those skilled in the art should understand that the metal layer can also be other metal thin layers, such as copper foil, etc. The upper plastic layer and the lower plastic layer can also be polypropylene layers, polyvinyl chloride layers, polyamide layers, etc. The thickness of the metal layer is not limited to this embodiment, for example, it can be 5 microns, 15 microns, 20 microns, 25 microns or 30 microns. Similarly, the thickness of the plastic layer can also be 5 microns, 8 microns, 12 microns, 15 microns, 20 microns, 25 microns, 30 microns, 50 microns or 100 microns.
[0047] The shape of the air cavity is arbitrary, for example, it can also be linear, heart-shaped, triangular, quadrilateral, pentagonal, hexagonal, etc. It is more appropriate that the height of the air cavity after inflation is 0.5-6cm, for example, it can be 1cm, 2cm, 3cm, 4cm, 5cm, etc.
[0048] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model.
Claims
1. A composite air cushion structure, characterized by: The composite air cushion structure comprises at least one metal layer, and upper and lower plastic layers which are sequentially stacked and connected with the metal layer, wherein the upper and lower plastic layers enclose a plurality of connected air cavities and air charging channels which are arranged on one side of the air cavities and connected with the air cavities.
2. The composite air cushion structure of claim 1, wherein: One side of the upper and / or lower plastic layer is connected with the metal layer.
3. The composite air cushion structure of claim 2, wherein: The number of the metal layer is one or more; the metal layer is a metal composite layer which comprises at least one metal layer A and at least one PE layer.
4. The composite air cushion structure of claim 3, wherein: The thickness of the metal layer is 5-30 microns.
5. The composite air cushion structure according to any one of claims 1 to 4, wherein: The upper and lower plastic layers are any one of polyethylene layer, polypropylene layer, polyvinyl chloride layer, polyamide layer and polystyrene layer.
6. The composite air cushion structure of claim 5, wherein: The thickness of the upper and lower plastic layers is 5-100 microns.
7. The composite air cushion structure of claim 5, wherein: The upper and lower plastic layers are high-density polyethylene layers.
8. The composite air cushion structure according to any one of claims 1-4, wherein: The height of the air cavities in the inflated state is 0.5-6 cm, and the edge of the composite air cushion structure is provided with a sealing line.
9. The composite air cushion structure according to any one of claims 1-4, wherein: The metal layer is an aluminum foil.
10. An insulating bag, characterized by: The composite air cushion structure enclosed in a bag shape according to any one of claims 1-9 is provided with an adhesive layer for sealing the bag opening of the heat preservation bag.