A self-cushioning film packaging assembly

Abstract

The present application relates to the technical field of transport packaging, in particular to a self-buffering film packaging assembly, comprising an outer film and an inner film, the inner film and the outer film are connected through a connecting part, a plurality of air holes are arranged on the inner film, and the shrinkage rate of the inner film is greater than that of the outer film, the self-buffering film packaging assembly can effectively shrink the inner film to be close to the article, and adapt to the packaging of irregularly shaped articles, and at the same time, a buffer cavity with a certain pressure can be automatically formed in the shrinkage process, and the buffering performance is improved.

Description

Technical Field

[0001] This invention relates to the field of transport packaging technology, and in particular to a self-cushioning film packaging assembly. Background Technology

[0002] Currently, most plastic film packaging materials on the market are single-layer films, primarily used to wrap dispersed objects for easy transport or distribution. However, current film packaging materials only provide fixation and do not offer cushioning or shock protection. Therefore, additional external cushioning packaging such as foam, air columns, or air bags is required for subsequent transportation, significantly increasing packaging costs. Cushioning packaging, also known as shockproof packaging, refers to packaging measures taken to reduce the impact and vibration of internal objects, protecting them from damage and minimizing the influence of external forces.

[0003] Currently, cushioning packaging is mostly suitable for items with regular shapes. When transporting items with irregular shapes, existing cushioning packaging materials are difficult to adapt to their shape, requiring the use of multiple cushioning materials, which increases packaging and transportation costs. Summary of the Invention

[0004] The purpose of this invention is to provide a self-cushioning film packaging assembly that can adapt to the packaging of irregularly shaped items and improve cushioning performance.

[0005] The present invention provides a self-buffered film packaging assembly, comprising an outer film and an inner film, wherein the inner film and the outer film are connected by a connecting part, the inner film is provided with a plurality of air vents, and the shrinkage rate of the inner film is greater than that of the outer film.

[0006] Preferably, the inner membrane is provided in several layers, and the inner membranes are connected to each other through the connecting portion.

[0007] Preferably, the shrinkage rate of the inner membranes decreases sequentially from the inside out.

[0008] Preferably, the connecting part is a star-shaped connecting layer, and the intersections on the star-shaped connecting layer are sequentially connected to the inner membrane and the outer membrane.

[0009] Preferably, the connecting part is a surface connecting layer, which is tightly connected to two adjacent membrane layers.

[0010] Preferably, after the item is wrapped inside the inner film, the edges of the film packaging assembly overlap and are heat-sealed, forming a sealed space inside the outer film.

[0011] Preferably, after wrapping the item, the inner membrane is heated, causing it to deform. Air between the inner membrane and the item enters the space between the inner membrane and the outer membrane through several ventilation holes, forming a buffer cavity.

[0012] Preferably, the shrinkage rate of the inner membrane is 30-50%, and the shrinkage rate of the outer membrane is 10-30%.

[0013] Preferably, the outer membrane thickness is at least twice the thickness of the inner membrane.

[0014] Preferably, the star-shaped connecting layer is made of environmentally friendly silicone material.

[0015] Beneficial effects:

[0016] This invention provides a self-cushioning film packaging assembly. By incorporating air vents in the inner film and ensuring its shrinkage rate is greater than that of the outer film, the inner film can effectively shrink and conform to the item, adapting to the packaging of irregularly shaped items. Simultaneously, during shrinkage, a pressure-controlled buffer cavity is automatically formed, improving cushioning performance. This invention eliminates the need for external compressed air or other cushioning materials, saving packaging costs while providing excellent protection and self-cushioning for the packaged items. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of the present invention;

[0019] Figure 2 This is a schematic diagram of the star-shaped connection layer structure in Embodiment 1 of the present invention;

[0020] Figure 3 This is a cross-sectional view of the item after it has been wrapped in packaging, according to Embodiment 1 of the present invention.

[0021] Figure 4 This is a cross-sectional schematic diagram of the heat-shrink packaged according to Embodiment 1 of the present invention;

[0022] Figure 5 This is a schematic cross-sectional view of Embodiment 2 of the present invention;

[0023] Figure 6 This is a cross-sectional view of the item after it has been wrapped in packaging, as shown in Embodiment 2 of the present invention.

[0024] Figure 7 This is a cross-sectional schematic diagram of the heat-shrink packaging completed according to Embodiment 2 of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Inner membrane, 2-Star-shaped connecting layer, 3-Outer membrane, 4-Item, 5-Buffer cavity, 6-Surface connecting layer. Detailed Implementation

[0027] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application. As used herein, the singular form includes the plural form unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this description, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] like Figure 1-2 As shown, a self-buffered film packaging assembly includes an outer film 3 and an inner film 1. The inner film 1 and the outer film 3 are connected by a connecting part, which is a star-shaped connecting layer 2. The intersections on the star-shaped connecting layer 2 are sequentially connected to the inner film 1 and the outer film 3. Figure 2 This is one connection state of the star-shaped connecting layer 2. The star-shaped connecting layer 2 is made of environmentally friendly silicone material, which has a certain elasticity, strong mechanical strength and softness. When the inner membrane 1 and the outer membrane 3 are separated, the star-shaped connecting layer 2 can tighten the inner membrane 1 and the outer membrane 3, thereby improving the fastening force.

[0032] The inner film 1 has several uniformly distributed air pores, and its shrinkage rate is greater than that of the outer film 3. The shrinkage rate of the inner film 1 is 30-50%, while that of the outer film 3 is 10-30%. The inner film 1 can be made of LDPE material. The thickness of the outer film 3 is at least twice that of the inner film 1. Increasing the thickness of the outer film 3 reduces its shrinkage rate and also increases the airtightness and overall impact resistance of the packaging. When the entire self-cushioning film packaging assembly is heated, both the inner film 1 and the outer film 3 shrink. Because the inner film 1, which is closer to the inside, has a greater shrinkage rate, it separates from the outer film 3, facilitating gas filling. Furthermore, the high shrinkage rate of the inner film 1 allows it to adapt to different shapes of items 4, making it easier to secure them within the packaging material.

[0033] The inner film 1 consists of several layers, all connected by connecting parts. The intersections on the star-shaped connecting layer 2 sequentially connect adjacent film layers. The shrinkage rate of the inner films 1 decreases sequentially from the inside out. The multiple inner films 1 enhance cushioning performance and make the overall packaging more stable.

[0034] After item 4 is wrapped inside the inner film 1, the edges of the film packaging components overlap and are heat-sealed, forming a sealed space inside the outer film 3, so that item 4 is completely covered inside the inner film 1. After wrapping item 4, it is heated, and the inner film 1 deforms due to the heat. Air between the inner film 1 and item 4 enters between the inner film 1 and the outer film 3 through several vents, forming a buffer cavity 5, which plays a role in cushioning and protection.

[0035] Working principle:

[0036] The self-cushioning film packaging assembly is made into a cylindrical structure with one open end, and conveyed to the item to be packaged at point 4, wrapping it inside the inner film 1 while simultaneously filling it with sufficient gas; the edges of the opening are overlapped and heat-sealed, forming a sealed space inside the inner film 1 and the entire packaging material, such as... Figure 3 As shown.

[0037] The entire packaging material containing item 4 is heated. The inner film 1 and outer film 3 deform and shrink due to the heat. Air between the inner film 1 and item 4 enters through several vents, forming a buffer cavity 5, which provides cushioning and protection. The slight shrinkage of the outer film 3 increases the internal pressure of the packaging material, ensuring that gas fills the buffer cavity 5 between the inner and outer films. Simultaneously, the star-shaped connecting layer 2 is stretched, providing a tightening force between the inner and outer films 1 and 3. As the heat shrinking process continues, the air pressure between the inner and outer films 1 and 3 increases, hindering the shrinkage of the outer film 3. A balance is reached between the tensile force of the star-shaped connecting layer 2, the shrinkage force of the outer film 3, and the air pressure in the buffer cavity 5, ending the heat shrinking process and completing one packaging step. The packaged item 4 is then ready for packaging. Figure 4 As shown.

[0038] Example 2

[0039] like Figure 5 As shown, a self-cushioning film packaging assembly has a structure basically the same as that of Embodiment 1, except for the structure of the connecting part. The connecting part is a surface connecting layer 6, which is tightly connected to the two adjacent film layers. The surface connecting layer 6 includes several dispersed connecting surfaces, occupying only a small portion of the area of ​​the inner film 1 and the outer film 3, ensuring that the inner film 1 and the outer film 3 can be separated at other locations, facilitating the filling of gas between the inner film 1 and the outer film 3. The surface connecting layer 6 can be made of cardboard with good mechanical properties or other materials with good rigidity, providing a certain degree of support while preventing the surface connecting layer 6 from deforming when the inner film 1 and the outer film 3 shrink.

[0040] Working principle:

[0041] The self-cushioning film packaging assembly is made into a cylindrical structure with one open end. The face bonding layer 6 is located at one end of the opening and can serve as the bottom of the entire packaging. It is conveyed to the item to be packaged 4, where it is wrapped inside the inner film 1, while simultaneously filling it with sufficient gas. The edges of the opening are overlapped and heat-sealed, creating a sealed space within the inner film 1 and the entire packaging material. Figure 6 As shown.

[0042] The entire packaging material encasing item 4 is heated, causing the inner film 1 and outer film 3 to deform and shrink. Air between the inner film 1 and item 4 enters through several vents, forming a buffer cavity 5, which provides cushioning and protection. The slight shrinkage of the outer film 3 increases the internal pressure of the packaging material, ensuring that gas can fill the buffer cavity 5 between the inner and outer films. The surface bonding layer 6, due to its good mechanical strength, restricts the further shrinkage of the inner and outer films 1 and 3 shortly after heat shrinkage begins, achieving a balanced state at the bottom and providing support for item 4.

[0043] As the heat shrinking process proceeds, the air pressure between the inner film 1 and the outer film 3 increases, hindering the contraction of the outer film 3. This achieves a balance between the air pressure in the buffer chamber 5 and the contractile force of the outer film 3, ending the heat shrinking process and completing one packaging step. The packaged item 4 is then ready for packaging. Figure 7 As shown.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-cushioning film packaging assembly, characterized in that, It includes an outer membrane and an inner membrane, which are connected by a connecting part. The inner membrane has several air pores. The shrinkage rate of the inner membrane is greater than that of the outer membrane. The inner membrane is composed of several layers, and the inner membranes are all connected by the connecting part. The shrinkage rate of the inner membranes decreases sequentially from the inside to the outside. The connecting part is a star-shaped connecting layer, and the intersections on the star-shaped connecting layer sequentially connect two adjacent membrane layers. The star-shaped connecting layer is made of environmentally friendly silicone material. After the item is wrapped inside the inner film, the edges of the film packaging assembly overlap and are heat-sealed, forming a sealed space inside the outer film.

2. The self-buffered film packaging assembly according to claim 1, characterized in that, After wrapping the item, it is heated. The inner membrane deforms due to the heat, and the air between the inner membrane and the item enters between the inner membrane and the outer membrane through several ventilation holes, forming a buffer cavity.

3. The self-buffered film packaging assembly according to claim 1, characterized in that, The inner membrane has a shrinkage rate of 30-50%, and the outer membrane has a shrinkage rate of 10-30%.

4. The self-buffered film packaging assembly according to claim 1, characterized in that, The thickness of the outer membrane is at least twice the thickness of the inner membrane.

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