Microporous waterproof breathable film

Abstract

The utility model discloses a microporous waterproof breathable film, and relates to the technical field of breathable films. The microporous waterproof breathable film comprises a first breathable film, a second breathable film and a waterproof layer, the first breathable film and the second breathable film are stacked and attached, the waterproof layer is arranged on the outer surface of the first breathable film, a plurality of first breathable holes are formed in the first breathable film, and a plurality of second breathable holes are formed in the second breathable film. The first ventilation holes are communicated with the second ventilation holes through ventilation channels, the second ventilation film is provided with protruding structures, the second ventilation film is provided with notch structures, the protruding structures are matched with the notch structures, and the ventilation channels are formed between the surfaces of the protruding structures and the notch structures at intervals. According to the microporous waterproof breathable film, the waterproof layer is arranged on the surface of the first breathable film, the external waterproof effect is guaranteed, the first breathable holes are communicated with the second breathable holes through the breathable channels, the breathable effect is guaranteed, the waterproof and breathable effects are achieved while the strength of the film body is improved through the double-layer structure, and the use effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to breathable membrane technical field more particularly is related to micro porous waterproof breathable membrane. BACKGROUND

[0002] The conventional waterproof breathable membrane is mostly single layer structure, and the waterproof breathable membrane of single layer structure is light enough, but the strength is not enough, if the waterproof breathable membrane is easily damaged, then the waterproof effect of the membrane body is greatly discounted. Based on this, how to ensure the strength of the membrane body while making the membrane body have waterproof and breathable effects is particularly important. SUMMARY

[0003] The utility model discloses a kind of micro porous waterproof breathable membranes, which are to solve the above technical problems.

[0004] The utility model discloses a kind of micro porous waterproof breathable membranes, which are to solve the above technical problems.

[0005] A kind of micro porous waterproof breathable membrane, including first breathable membrane, second breathable membrane, waterproof layer, first breathable membrane and second breathable membrane are superimposed and are attached, the outer surface of first breathable membrane is provided with waterproof layer, a plurality of first breathable holes are provided on first breathable membrane, a plurality of second breathable holes are provided on second breathable membrane, first breathable hole is penetrated with second breathable hole by breathable channel, protruding structure is provided on second breathable membrane, notch structure is provided on second breathable membrane, protruding structure and notch structure are adapted, and breathable channel is formed between the surface of protruding structure and notch structure with interval.

[0006] A preferred technical solution: the radius of first breathable hole is greater than the radius of second breathable hole.

[0007] A preferred technical solution: the radius of breathable channel is less than the radius of first breathable hole and second breathable hole.

[0008] A preferred technical solution: the shape of first breathable hole on the outside surface of first breathable membrane is round hole.

[0009] A preferred technical solution: the shape of second breathable hole on the outside surface of second breathable membrane is round hole.

[0010] A preferred technical solution: the number of first breathable hole is greater than the number of second breathable hole.

[0011] The utility model has the advantages that:

[0012] The micro porous waterproof breathable membrane in the utility model sets waterproof layer on the surface of first breathable membrane, ensures external waterproof effect, communicates first breathable hole with second breathable hole through breathable channel, ensures breathable effect, double-layer structure improves the strength of membrane body while having waterproof and breathable effects, and use effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic view of the utility model.

[0014] Figure 2 It is Figure 1 The partial close-up view of A in the middle.

[0015] Reference signs: 1, first air-permeable film;11, first air-permeable hole;12, notched structure;2, second air-permeable film;21, second air-permeable hole;22, protruding structure;3, waterproof layer;4, air-permeable channel. DETAILED DESCRIPTION

[0016] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0018] As Figures 1 to 2 Indicated, the present embodiment provides a kind of microporous waterproof air-permeable film, including first air-permeable film 1, second air-permeable film 2, waterproof layer 3, first air-permeable film 1 and second air-permeable film 2 are superposed and are attached, the outer surface of first air-permeable film 1 is provided with waterproof layer 3, first air-permeable film 1 is provided with a plurality of first air-permeable holes 11, second air-permeable film 2 is provided with a plurality of second air-permeable holes 21, first air-permeable hole 11 is connected with second air-permeable hole 21 by air-permeable channel 4, second air-permeable film 2 is provided with protruding structure 22, second air-permeable film 2 is provided with notched structure 12, protruding structure 22 and notched structure 12 are adapted, and the surface of protruding structure 22 and notched structure 12 are spaced apart to form air-permeable channel 4.

[0019] Further, the radius of first air-permeable hole 11 is greater than the radius of second air-permeable hole 21.

[0020] Further, the radius of air-permeable channel 4 is less than the radius of first air-permeable hole 11 and second air-permeable hole 21.

[0021] Further, the shape of first air-permeable hole 11 on the outside surface of first air-permeable film 1 is round hole. Further, the shape of first air-permeable hole 11 on the outside surface of first air-permeable film 1 is round hole.

[0022] Furthermore, the second vent 21 is a circular hole on the outer surface of the second vent membrane 2.

[0023] Furthermore, the number of first vent holes 11 is greater than the number of second vent holes 21.

[0024] by Figure 1 For example, in use, the top of the first breathable membrane 1 is its outer surface, and the bottom of the second breathable membrane 2 is its outer surface; when the first breathable membrane 1 and the second breathable membrane 2 form an inner and outer structure, the first breathable membrane 1 is the outer side, and the second breathable membrane 2 is the inner side; the protruding structure 22 and the concave structure 12 can enhance the superposition effect of the first breathable membrane 1 and the second breathable membrane 2. The first vent 11 and the second vent 21 are staggered and will not be directly transferred from the first breathable membrane 1 side to the second breathable membrane 2, which can indirectly improve the waterproof effect to a certain extent.

Claims

1. A microporous, waterproof, and air-permeable membrane, characterized by, The application relates to a breathable film, which comprises a first breathable film, a second breathable film and a waterproof layer, wherein the first breathable film and the second breathable film are arranged in a superimposed mode, the outer surface of the first breathable film is provided with the waterproof layer, a plurality of first breathable holes are arranged on the first breathable film, a plurality of second breathable holes are arranged on the second breathable film, the first breathable holes are connected with the second breathable holes through a breathable channel, a convex structure is arranged on the second breathable film, a notch structure is arranged on the second breathable film, the convex structure is matched with the notch structure, and the breathable channel is formed between the surface of the convex structure and the notch structure.

2. The microporous, waterproof, and breathable membrane according to claim 1, wherein, The radius of the first breathable hole is larger than the radius of the second breathable hole.

3. The microporous, waterproof, and breathable membrane according to claim 1, wherein, The radius of the breathable channel is smaller than the radius of the first breathable hole and the second breathable hole.

4. The microporous, waterproof, and breathable membrane according to claim 1, wherein, The shape of the first breathable hole on the outer surface of the first breathable film is a circular hole.

5. The microporous, waterproof, and breathable membrane according to claim 1, wherein, The shape of the second breathable hole on the outer surface of the second breathable film is a circular hole.

6. The microporous, waterproof, and breathable membrane according to claim 1, wherein, The number of the first breathable holes is larger than the number of the second breathable holes.

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