High-breathability water-locking protective film

Abstract

The utility model relates to the technical field of protective films, in particular to a high-breathability water-locking protective film. According to the technical scheme, the waterproof film mainly aims at solving the problems that a common waterproof film is often not breathable, moisture is accumulated, and articles are damaged, and comprises a breathable layer; the protective layer is arranged on the outer side of the breathable layer and is used for protection; a middle supporting layer is arranged on the inner side of the breathable layer, a water locking layer is arranged on the inner side of the middle supporting layer, the side, away from the middle supporting layer, of the water locking layer is coated with an adhesive layer, and a release layer adheres to the adhesive layer. According to the utility model, excellent air permeability is provided while water resistance is ensured, water permeation is effectively prevented, and the service life of an article is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of protective films, in particular to a highly breathable and water-locking protective film. Background Art

[0002] A protective film is a thin and flexible membrane material that is usually used to cover the surface of an object to protect it from external factors (such as dust, dirt, moisture, scratches, etc.). The protective film can be made of different materials (such as plastic, film, polyester film, etc.) depending on the purpose, and has different physical and chemical properties. Many items (especially electronic equipment, medicines, and food, etc.) need to avoid moisture accumulation, but at the same time need to maintain air circulation. Common waterproof films are often not breathable, resulting in moisture accumulation and damage to the items. In view of this, the utility model proposes a highly breathable and water-locking protective film. Utility Model Content

[0003] The purpose of the utility model is to propose a highly breathable and water-locking protective film to address the problem that common waterproof films in the background art are often not breathable, resulting in moisture accumulation and damage to items.

[0004] The technical solution of the utility model is: a highly breathable and water-locking protective film, comprising a breathable layer; a protective layer arranged on the outside of the breathable layer for protection; an intermediate support layer is arranged on the inner side of the breathable layer, a water-locking layer is arranged on the inner side of the intermediate support layer, the water-locking layer is coated with an adhesive layer on the side away from the intermediate support layer, and a release layer is bonded to the adhesive layer.

[0005] Optionally, a plurality of first through holes are provided on the breathable layer.

[0006] Optionally, a plurality of groups of second through holes are formed on the protection layer, and positions of the second through holes correspond to positions of the first through holes.

[0007] Optionally, the intermediate supporting layer is a honeycomb structure.

[0008] Optionally, the breathable layer is made of polyurethane material, and the thickness of the breathable layer is 10 μm to 20 μm.

[0009] Optionally, the protective layer is made of polytetrafluoroethylene material, and the thickness of the protective layer is 10 μm to 20 μm.

[0010] Optionally, the intermediate support layer is made of polyester fiber material, and the thickness of the intermediate support layer is 20 μm to 40 μm.

[0011] Optionally, the water-locking layer is made of cotton fiber material, which is compounded with silver ions, and the thickness of the water-locking layer is 10 μm to 20 μm.

[0012] Optionally, the adhesive layer is made of silicone material, and the thickness of the adhesive layer is 10 μm to 20 μm.

[0013] Optionally, the release layer is made of polypropylene material, and the thickness of the release layer is 10 μm to 20 μm.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] The utility model prevents the entry of external pollutants such as moisture, liquid, dust, bacteria, etc. by setting a protective layer. At the same time, the honeycomb structure of the middle support layer facilitates air flow, improves the cushioning performance of the structure, and increases protection.

[0016] Furthermore, the water-locking layer can absorb internal moisture and allow ventilation through the middle support layer, the first through hole and the second through hole to discharge the moisture and ensure internal dryness.

[0017] In summary, the utility model ensures excellent air permeability while being waterproof, effectively prevents water penetration, and extends the service life of the article. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic cross-sectional structure diagram of a highly breathable and water-locking protective film of the present invention is given;

[0019] Figure 2 for Figure 1 Schematic diagram of the disassembled structure.

[0020] Reference numerals:

[0021] 1. Breathable layer; 2. Protective layer; 3. Intermediate support layer; 4. Water-locking layer; 5. Adhesive layer; 6. Release layer; 11. First through hole; 21. Second through hole. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0024] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] Example

[0028] like Figure 1 and Figure 2 As shown, the highly breathable and water-locking protective membrane proposed in this utility model comprises a breathable layer 1 having multiple groups of first through holes 11 formed therein. Made of polyurethane, the breathable layer 1 has a thickness of 10 μm and exhibits excellent air permeability, allowing water vapor to pass through while effectively preventing the penetration of liquid water. This means that while maintaining a certain level of waterproof performance, it allows internal moisture to escape, preventing discomfort caused by moisture accumulation. The membrane is particularly suitable for applications requiring both excellent breathability and waterproofness, such as sportswear, outdoor equipment, and waterproof membranes.

[0029] Furthermore, the protective film includes a protective layer 2 positioned outside the breathable layer 1 for protection. The protective layer 2 is provided with multiple sets of second through-holes 21, which are positioned correspondingly to the first through-holes 11 to facilitate ventilation and moisture evaporation. The protective layer 2 is made of polytetrafluoroethylene (PTFE) with a thickness of 10 μm. PTFE exhibits long-term stability and is virtually unaffected by the external environment, maintaining its chemical and physical properties over time even under extremely harsh conditions. This ensures the long-term use of the PTFE protective layer, reducing maintenance and replacement frequency and lowering costs.

[0030] Inside the breathable layer 1, an intermediate support layer 3 is positioned. This honeycomb structure enhances cushioning and protection. Made of 20μm thick polyester fiber, it offers excellent mechanical strength, tensile strength, and tear resistance, making it more durable when subjected to external forces. It also provides a sturdy support, preventing damage or deformation during prolonged use.

[0031] Inside the intermediate support layer 3, a moisture-locking layer 4 is provided. Made of cotton fiber and infused with silver ions, this layer is 10 μm thick and possesses exceptionally strong water absorption. It rapidly absorbs water and stores it through its porous structure. The cotton fiber's absorbency effectively locks in moisture, preventing it from leaking out and maintaining the performance of environments or products that require a moist environment. Silver ions also effectively prevent bacterial growth.

[0032] The side of the moisture-locking layer 4 facing away from the intermediate support layer 3 is coated with an adhesive layer 5. This adhesive layer 5 is made of silicone and is 10 μm thick. Silicone has very strong adhesion, especially on many surfaces such as glass, metal, and plastic. It provides long-lasting adhesion without damaging the adherend. This property makes silicone well-suited for use as a variety of adhesives and sealants, enabling effective fixing or sealing in complex applications.

[0033] Adhesive layer 5 is bonded to release layer 6, made of polypropylene and 10 μm thick. Polypropylene has a low density, making it lighter than many other plastics or metals. The lightweight nature of polypropylene is particularly important in applications requiring weight reduction, particularly in transportation and packaging, where it can reduce shipping costs and energy consumption.

[0034] In this embodiment, the breathable layer 1 has excellent air permeability, allowing water vapor to pass through while effectively preventing liquid water from penetrating. This means it can maintain a certain level of waterproof performance while allowing internal moisture to escape, preventing discomfort caused by moisture accumulation. It is particularly suitable for applications requiring both excellent breathability and waterproofness, such as sportswear, outdoor equipment, and waterproof membranes. The second through-holes 21 are positioned correspondingly to the first through-holes 11, facilitating the passage of air and moisture. The protective layer 2 exhibits long-term stability, being virtually unaffected by the external environment and capable of maintaining its chemical and physical properties over time even under extremely harsh conditions. This allows the PTFE protective layer to be used for extended periods, reducing maintenance and replacement frequency and lowering costs. The intermediate support layer 3 has excellent mechanical strength, tensile strength, and tear resistance, making it more durable when subjected to external forces. It also provides sturdy support, preventing damage or deformation during prolonged use. The moisture-locking layer 4 has a very strong water-absorbing capacity. It rapidly absorbs water and stores it through its porous structure. The cotton fiber's absorbency effectively locks in moisture, preventing it from escaping and maintaining the performance of environments or products that require moisture. At the same time, silver ions can effectively prevent the growth of bacteria. The adhesive layer 5 has very strong adhesion, especially on many surfaces such as glass, metal, plastic, etc. It can provide long-lasting adhesion without damaging the surface of the adherend. This property makes silicone very suitable for use as a variety of adhesives and sealants, and can effectively fix or seal in complex application environments. The release layer 6 has a lower density, making its material lighter than many other plastic or metal materials. In applications that need to reduce weight, the lightweight properties of polypropylene are very important, especially in the fields of transportation and packaging, which can reduce the transportation cost and energy consumption of products.

[0035] The above specific embodiment is only an optional embodiment of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above embodiment, those skilled in the art can make various alternative improvements and combinations to the above specific embodiment.

Claims

1. A highly breathable and water-locking protective film, characterized in that: include: Breathable layer (1); a protective layer (2) disposed on the outside of the breathable layer (1) for protection; An intermediate support layer (3) is provided on the inner side of the breathable layer (1), a water-locking layer (4) is provided on the inner side of the intermediate support layer (3), an adhesive layer (5) is coated on the side of the water-locking layer (4) away from the intermediate support layer (3), and a release layer (6) is bonded to the adhesive layer (5).

2. A highly breathable and water-locking protective film according to claim 1, characterized in that: The breathable layer (1) is provided with a plurality of groups of first through holes (11).

3. A highly breathable and water-locking protective film according to claim 2, characterized in that: A plurality of groups of second through holes (21) are provided on the protective layer (2), and the positions of the second through holes (21) correspond to the positions of the first through holes (11).

4. A highly breathable and water-locking protective film according to claim 3, characterized in that: The intermediate supporting layer (3) is a honeycomb structure.

5. A highly breathable and water-locking protective film according to claim 4, characterized in that: The breathable layer (1) is made of polyurethane material, and the thickness of the breathable layer (1) is 10 μm to 20 μm.

6. A highly breathable and water-locking protective film according to claim 5, characterized in that: The protective layer (2) is made of polytetrafluoroethylene material, and the thickness of the protective layer (2) is 10 μm to 20 μm.

7. A highly breathable and water-locking protective film according to claim 6, characterized in that: The intermediate support layer (3) is made of polyester fiber material, and the thickness of the intermediate support layer (3) is 20 μm to 40 μm.

8. The highly breathable and water-locking protective film according to claim 7, characterized in that: The water-locking layer (4) is made of cotton fiber material and is compounded with silver ions. The thickness of the water-locking layer (4) is 10 μm to 20 μm.

9. The highly breathable and water-locking protective film according to claim 7, characterized in that: The adhesive layer (5) is made of silicone material, and the thickness of the adhesive layer (5) is 10 μm to 20 μm.

10. The highly breathable and water-locking protective film according to claim 7, characterized in that: The release layer (6) is made of polypropylene material, and the thickness of the release layer (6) is 10 μm to 20 μm.

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