Waterproof moisture-permeable composite film

Abstract

The utility model discloses a waterproof moisture-permeable composite film, which belongs to the technical field of films, and comprises a supporting layer, a moisture-permeable layer, a waterproof layer, a protective layer, a moisture-permeable component and a reinforcing layer, the moisture-permeable component comprises a plurality of first through holes, a plurality of second through holes, a plurality of third through holes and a plurality of fourth through holes, the plurality of first through holes, the plurality of second through holes, the plurality of third through holes and the plurality of fourth through holes are formed in the supporting layer, and the plurality of first through holes are communicated with the plurality of second through holes; the protective layer and the reinforcing layer are arranged, the first reinforcing fibers and the second reinforcing fibers which are connected in a staggered mode are matched with each other, so that the strength of the thin film is enhanced, the thin film is not prone to being damaged under the action of external force, and the protective layer has the excellent waterproof and moisture permeable performance and also has the good waterproof and moisture permeable performance. And the film also has good wear resistance and aging resistance, can be effectively protected, and ensures the normal service life of the film.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of film, specifically relates to a waterproof moisture permeable composite film. BACKGROUND

[0002] The waterproof moisture permeable composite film is a multi-layer structure film material, which organically combines waterproof function and moisture permeable function together.

[0003] However, the waterproof moisture permeable composite film in the prior art can be damaged due to bending, friction and aging, etc., thereby reducing the normal service life, and therefore, a waterproof moisture permeable composite film is needed to solve the above problems. SUMMARY

[0004] The utility model discloses waterproof moisture permeable composite film aims at providing a waterproof moisture permeable composite film to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a waterproof moisture permeable composite film, including support layer, moisture permeable layer, waterproof layer, protective layer, moisture permeable component and reinforcing layer, the moisture permeable component includes a plurality of first through -hole, a plurality of second through -hole, a plurality of third through -hole and a plurality of fourth through -hole, a plurality of first through -hole, a plurality of second through -hole, a plurality of third through -hole and a plurality of fourth through -hole are set up in support layer, a plurality of first through -hole and a plurality of second through -hole are communicated, a plurality of third through -hole and a plurality of fourth through -hole and a plurality of first through -hole and a plurality of second through -hole are communicated;

[0006] The reinforcing layer includes a plurality of first reinforcing fibers and a plurality of second reinforcing fibers, the plurality of first reinforcing fibers and the plurality of second reinforcing fibers are connected with each other, and the plurality of first reinforcing fibers and the plurality of second reinforcing fibers are connected in the support layer.

[0007] As a preferred scheme, the material of the support layer is polyester fiber, and the material of the moisture permeable layer is microporous structure polyurethane.

[0008] As a preferred scheme, the material of the waterproof layer is polytetrafluoroethylene.

[0009] As a preferred scheme, the material of the protective layer is fluorine-containing polymer coating.

[0010] As a preferred scheme, the material of the first reinforcing fiber and the second reinforcing fiber is carbon fiber or glass fiber.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] This invention, by providing a protective layer and a reinforcing layer, uses several interlocking first and second reinforcing fibers to enhance the strength of the film, making the film less susceptible to damage under external forces. In addition, the protective layer has excellent waterproof and breathable properties, as well as good wear resistance and anti-aging properties, which can effectively protect the film and ensure its normal service life.

[0013] In this invention, the moisture-permeable component provided within the support layer enhances its moisture permeability, allowing vapor inside the film to smoothly pass through the support layer and move into the waterproof and protective layers, thereby enhancing the film's moisture permeability. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention from the front view;

[0015] Figure 2 This is a side-view three-dimensional structural schematic diagram of the present invention;

[0016] Figure 3 This is a partial frontal three-dimensional cross-sectional structural diagram of the present invention;

[0017] Figure 4 This is a partial side view of the three-dimensional cross-sectional structure of the present invention;

[0018] Figure 5 This is a three-dimensional structural diagram of the first reinforcing fiber of this utility model.

[0019] In the figure: 1. Support layer; 2. Moisture-permeable layer; 3. Waterproof layer; 4. Protective layer; 5. Moisture-permeable component; 501. First through hole; 502. Second through hole; 503. Third through hole; 504. Fourth through hole; 6. Reinforcing layer; 601. First reinforcing fiber; 602. Second reinforcing fiber. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments.

[0021] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0022] Please see Figures 1-5The utility model provides a waterproof moisture -permeable composite film, including support layer 1, moisture -permeable layer 2, waterproof layer 3, protective layer 4, moisture -permeable subassembly 5 and reinforcing layer 6, moisture -permeable subassembly 5 includes a plurality of first through -hole 501, a plurality of second through -hole 502, a plurality of third through -hole 503 and a plurality of fourth through -hole 504, a plurality of first through -hole 501, a plurality of second through -hole 502, a plurality of third through -hole 503 and a plurality of fourth through -hole 504 are set up in support layer 1, a plurality of first through -hole 501 is linked with a plurality of second through -hole 502, a plurality of third through -hole 503 and a plurality of fourth through -hole 504 are linked with a plurality of first through -hole 501 and a plurality of second through -hole 502,

[0023] Reinforcing layer 6 includes a plurality of first reinforcing fiber 601 and a plurality of second reinforcing fiber 602, a plurality of first reinforcing fiber 601 and a plurality of second reinforcing fiber 602 are connected with each other, a plurality of first reinforcing fiber 601 and a plurality of second reinforcing fiber 602 are connected in support layer 1.

[0024] The material of support layer 1 is polyester fiber, the material of moisture -permeable layer 2 is micro -porous structure polyurethane, by setting polyester fiber, can effectively improve the tensile and tear resistance of film, make it not easy to break when receiving external force, prolong the service life of material, by setting polyurethane, the pore size of micro -porous polyurethane can be adjusted by controlling the foaming process, thereby realizing waterproof and moisture -permeable effect of different degrees,

[0025] The material of waterproof layer 3 is polytetrafluoroethylene, by setting polytetrafluoroethylene, liquid water is difficult to spread and penetrate on its surface, the micro -porous structure of polytetrafluoroethylene can prevent liquid water from entering, while not hindering the passage of water vapor molecules,

[0026] The material of protective layer 4 is fluorine-containing polymer coating, by setting fluorine-containing polymer coating, fluorine-containing polymer coating has excellent waterproof and moisture -permeable performance, and also has good wear resistance and aging resistance, can effectively protect the film,

[0027] The material of first reinforcing fiber 601 and second reinforcing fiber 602 is carbon fiber or glass fiber, by setting carbon fiber or glass fiber, glass fiber has very high strength and modulus, significantly enhances the mechanical properties of film, effectively prevents the film from breaking or deforming under the action of external force such as stretching, bending, carbon fiber is a kind of high-performance fiber material, greatly improves the carrying capacity and anti -deformation ability of film.

[0028] The working principle and use flow of the utility model: when the film needs to be used, the first through hole 501 and the second through hole 502 of the film periphery are in sealed state, the internal vapor can pass through the moisture permeable layer 2 and the moisture permeable assembly 5, and the vapor can move to the waterproof layer 3 through the plurality of third through holes 503, and is discharged by passing through the waterproof layer 3 and the protection layer 4, and the protection layer 4 and the waterproof layer 3 cooperate each other to block the moisture of the outside, so that the water droplet of the outside is not easy to pass through the film;

[0029] And the plurality of first reinforcing fibers 601 and second reinforcing fibers 602 connected in staggered mode cooperate each other to enhance the strength of the film, so that the film is not easy to be damaged under the action of external force.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A waterproof and breathable composite film, comprising a support layer (1), a breathable layer (2), a waterproof layer (3), a protective layer (4), a breathable component (5), and a reinforcing layer (6), characterized in that: The moisture-permeable component (5) includes a plurality of first through holes (501), a plurality of second through holes (502), a plurality of third through holes (503) and a plurality of fourth through holes (504). The plurality of first through holes (501), a plurality of second through holes (502), a plurality of third through holes (503) and a plurality of fourth through holes (504) are formed in the support layer (1). The plurality of first through holes (501) are connected to the plurality of second through holes (502), and the plurality of third through holes (503) and the plurality of fourth through holes (504) are connected to the plurality of first through holes (501) and the plurality of second through holes (502). The reinforcing layer (6) includes a plurality of first reinforcing fibers (601) and a plurality of second reinforcing fibers (602), which are interwoven and connected to each other, and are connected within the support layer (1).

2. The waterproof and breathable composite film according to claim 1, characterized in that: The support layer (1) is made of polyester fiber, and the breathable layer (2) is made of polyurethane with a microporous structure.

3. The waterproof and breathable composite film according to claim 1, characterized in that: The waterproof layer (3) is made of polytetrafluoroethylene.

4. The waterproof and breathable composite film according to claim 1, characterized in that: The protective layer (4) is made of a fluoropolymer coating.

5. The waterproof and breathable composite film according to claim 1, characterized in that: The first reinforcing fiber (601) and the second reinforcing fiber (602) are both made of carbon fiber or glass fiber.

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