PE packaging film with moisture-proof and waterproof performance

Abstract

The utility model relates to a PE (Poly Ethylene) packaging film with moisture-proof and waterproof performance, which belongs to the technical field of packaging films and comprises a bottom layer used for contacting with a product, a contact bulge fixed at the bottom of the bottom layer, a buffer layer arranged above the bottom layer, an accommodating groove formed on the buffer layer through stamping, and a protective layer arranged above the buffer layer. A protective structure is embedded in the bottom of the protective layer, a top layer is arranged above the protective layer, the containing grooves are filled with expansion filler, the expansion filler is bentonite or a cement-based material, the number of the buffer layers is two, the number of the protective layers is two, the containing grooves in the buffer layers are arranged in a matrix mode, and the containing grooves in different layers are arranged in a staggered mode. According to the packaging film, friction force is increased through the bottom layer contact protrusions, sliding displacement of a product is avoided, and stability is enhanced; the buffer layer containing groove is filled with materials, water can be absorbed, holes can be blocked, impact force can be dispersed, and the damp-proof and waterproof performance is improved; the protective structure of the protective layer enhances the strength and toughness, so that the protection is more uniform, and the protective effect is enhanced.

Description

A PE packaging film with moisture-proof and waterproof properties Technical Field

[0001] This utility model relates to the field of packaging film technology, and in particular to a PE packaging film with moisture-proof and waterproof properties. Background Technology

[0002] PE packaging film, as a common plastic packaging material, is used in many fields due to its excellent performance and wide applicability. After being packaged on the outside of the product, it can prevent the product from being affected by dust and moisture. Moreover, after complete coverage, it can isolate bacteria and has excellent sealing properties. It is especially common in the packaging of food, electronic components and medical products.

[0003] However, while existing PE packaging films have good overall toughness and strength, they are not effective in protecting some mechanical and electronic products. These products require good moisture and water resistance, but the structures of the products being packaged vary. When the relatively sharp parts are subjected to secondary impacts or continuous squeezing and friction, they are prone to breakage, which in turn leads to damage to the packaging film. This allows dust, moisture, and bacteria to enter, seriously affecting the performance and lifespan of mechanical and electronic products. Therefore, this utility model is proposed. Summary of the Invention

[0004] To overcome the technical defects of the existing technology, this utility model provides a PE packaging film with moisture-proof and waterproof properties, which can protect the shape of the packaged product, thereby solving the problem of easy damage to certain parts.

[0005] The technical solution adopted by this utility model is as follows: it includes a bottom layer for contacting the product, a contact protrusion fixed at the bottom of the bottom layer, a buffer layer above the bottom layer, a receiving groove formed on the buffer layer by stamping, a protective layer above the buffer layer, a protective structure embedded at the bottom of the protective layer, and a top layer above the protective layer.

[0006] Preferably, in order to enhance the buffering performance and adsorption protection capacity of the buffer layer, the receiving tank is filled with expanding filler, which is bentonite or cement-based material.

[0007] Preferably, in order to improve the overall structure’s buffering and protection effect and avoid stress concentration, both the buffer layer and the protective layer are provided in two layers. The receiving grooves in the buffer layer are arranged in a matrix, and the receiving grooves in different layers are staggered.

[0008] Preferably, in order to enhance the protective strength and toughness of the protective layer, the protective structure is a rigid strip that gradually spirals outward, and the rigid strip is made of polyvinyl chloride or fiber sheet.

[0009] Preferably, in order to further improve the protective performance of the protective layer and make the protection more uniform, the protective structure is an interlocking ring, and the rings are connected by cross-shaped pieces. The rings and the cross-shaped pieces are made of polyvinyl chloride or fiber sheets.

[0010] Preferably, in order to ensure the stability and integrity of the connection between the bottom layer, buffer layer, protective layer and top layer, the bottom layer, buffer layer, protective layer and top layer are fixedly connected by hot melt adhesive or hot pressing.

[0011] Preferably, in order to further enhance the buffering effect of the buffer layer, the receiving groove is filled with air.

[0012] The beneficial effects of this utility model are:

[0013] 1. Enhanced product placement stability: The bottom layer features contact protrusions, which increase the friction between the product and the contact surface, effectively preventing the product from sliding or shifting and significantly improving the stability of the product placement.

[0014] 2. Enhanced cushioning performance: The buffer layer's containment grooves are filled with bentonite, cement-based materials, or air, which can effectively absorb moisture. Especially after accidental damage, bentonite or cement-based materials can seal the cavities, preventing moisture from further damaging the product. Air-filled containment grooves can effectively absorb and disperse impact forces, greatly enhancing cushioning performance and significantly reducing damage to the product.

[0015] 3. Avoid stress concentration: The buffer layer is set as two layers, and the receiving grooves are arranged in a matrix and staggered with each other, which further improves the buffering and protection effect and effectively avoids the occurrence of stress concentration.

[0016] 4. Enhanced protective effect: The protective structure embedded in the protective layer, whether it is a spirally extending rigid strip or a combination of interlocking rings and cross plates, can enhance the protective strength and toughness of the protective layer, making the protection more uniform. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of each layer of this utility model.

[0018] Figure 2 is a schematic diagram of the contact protrusion structure of this utility model.

[0019] Figure 3 is a schematic diagram of the rigid strip structure of this utility model.

[0020] Figure 4 is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0021] Figure 5 is a schematic diagram of the receiving groove structure of this utility model.

[0022] Explanation of reference numerals in the attached figures: 1. Bottom layer; 101. Contact protrusion; 2. Buffer layer; 201. Receiving groove; 3. Protective layer; 4. Protective structure; 401. Rigid strip; 41. Ring; 42. Cross plate; 5. Top layer. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] As shown in Figures 1-5. Example 1

[0025] This embodiment provides a PE packaging film with moisture-proof and waterproof properties, including a bottom layer 1 for contacting the product, a contact protrusion 101 fixed at the bottom of the bottom layer 1, a buffer layer 2 above the bottom layer 1, a receiving groove 201 formed on the buffer layer 2 by stamping, a protective layer 3 above the buffer layer 2, a protective structure 4 embedded at the bottom of the protective layer 3, and a top layer 5 above the protective layer 3.

[0026] The containment tank 201 is filled with expanding filler, which is bentonite or cement-based material, to enhance the buffer performance and adsorption protection capacity of the buffer layer 2.

[0027] Both the buffer layer 2 and the protective layer 3 are provided with two layers. The receiving grooves 201 in the buffer layer 2 are arranged in a matrix. The receiving grooves 201 in different layers are staggered to improve the buffering and protection effect of the overall structure and avoid stress concentration.

[0028] The protective structure 4 is a rigid strip 401 that gradually spirals outward. The rigid strip 401 is made of polyvinyl chloride or fiber sheet, which can enhance the protective strength and toughness of the protective layer 3.

[0029] The bottom layer 1, buffer layer 2, protective layer 3 and top layer 5 are fixedly connected by hot melt adhesive or hot pressing, which can ensure the stability and integrity of the connection between the bottom layer 1, buffer layer 2, protective layer 3 and top layer 5.

[0030] The contact protrusions 101 in the bottom layer 1 increase the contact friction with the product surface, preventing the packaging film from sliding during transportation. Simultaneously, the protruding structure disperses localized pressure. Bentonite or cement-based fillers undergo microscopic expansion upon contact with moisture, forming a physical barrier layer that combines moisture protection and cushioning. The staggered arrangement of the two buffer grooves disperses impact force through cross-support, preventing single-point failure. The spirally extended rigid strips 401 absorb energy through deformation; their mechanical properties are similar to a spring structure, resisting longitudinal compression and transverse shear forces. The fiber sheet is preferably a mixture of glass fiber and polyester plastic, or a fabric sheet directly formed from glass fiber woven fabric. Example 2

[0031] Based on Example 1, this embodiment proposes another technical solution for the protective structure 4. The protective structure 4 consists of interlocking rings 41 connected by cross plates 42. Both the rings 41 and the cross plates 42 are made of polyvinyl chloride or fiber sheets, which can further improve the protective performance of the protective layer 3 and make the protection more uniform.

[0032] The nested arrangement of the rings 41 forms a honeycomb-like mechanical network, evenly distributing external pressure. The cross-shaped pieces 42 serve as connecting nodes, enhancing structural stability and preventing excessive deformation of the rings 41. Furthermore, polyvinyl chloride provides good puncture resistance. Example 3

[0033] This embodiment proposes another implementation method for the filling material in the receiving groove 201 based on embodiment 1. The receiving groove 201 is filled with air, which can further improve the buffering effect of the buffer layer 2.

[0034] Enclosed air chambers absorb energy through gas compression, making them ideal for shockproof applications in precision instruments.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A PE packaging film with moisture-proof and waterproof properties, comprising a bottom layer (1) for contacting the product, characterized in that: The bottom layer (1) has a contact protrusion (101) fixed at the bottom. A buffer layer (2) is provided above the bottom layer (1). A receiving groove (201) is formed on the buffer layer (2) by stamping. A protective layer (3) is provided above the buffer layer (2). A protective structure (4) is embedded at the bottom of the protective layer (3). A top layer (5) is provided above the protective layer (3).

2. The PE packaging film with moisture-proof and waterproof properties according to claim 1, characterized in that: The receiving tank (201) is filled with expanding filler, which is bentonite or cement-based material.

3. The PE packaging film with moisture-proof and waterproof properties according to claim 2, characterized in that: The buffer layer (2) and the protective layer (3) are each provided with two layers. The receiving slots (201) in the buffer layer (2) are arranged in a matrix, and the receiving slots (201) in different layers are staggered.

4. The PE packaging film with moisture-proof and waterproof properties according to claim 2, characterized in that: The protective structure (4) is a rigid strip (401) that gradually spirals outwards, and the rigid strip (401) is made of polyvinyl chloride or fiber sheet.

5. The PE packaging film with moisture-proof and waterproof properties according to claim 2, characterized in that: The protective structure (4) consists of interlocking rings (41), and the rings (41) are connected by cross plates (42). The rings (41) and the cross plates (42) are made of polyvinyl chloride or fiber sheets.

6. The PE packaging film with moisture-proof and waterproof properties according to claim 1, characterized in that: The bottom layer (1), buffer layer (2), protective layer (3) and top layer (5) are fixedly connected by hot melt adhesive or hot pressing.

7. The PE packaging film with moisture-proof and waterproof properties according to claim 1, characterized in that: The receiving tank (201) is filled with air.

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