Waterproof breathable membrane assembly

Abstract

The utility model discloses a waterproof breathable film assembly which comprises a double-faced adhesive tape layer, a waterproof breathable film layer and a release layer, and the whole double-faced adhesive tape layer is in an annular frame shape; one surface of the waterproof and breathable film layer is in contact with the double-sided adhesive layer and forms bonding fixation; the release layer comprises a body and a protruding part which are connected, and the protruding part is located at one end of the body and protrudes outwards relative to the edge of the waterproof breathable film layer; the overall dimension of the body is the same as that of the waterproof breathable film layer, and when the waterproof breathable film assembly is overlooked, the body and the waterproof breathable film layer are completely overlapped; the face, close to the waterproof breathable film layer, of the body is a connecting face, the connecting face is provided with a gum area bonded with the other face of the waterproof breathable film layer, the gum area is located in the middle of the connecting face, and the area, except the gum area, of the connecting face is not bonded with the waterproof breathable film layer. In the process of tearing off the release layer through the protruding part, the waterproof breathable film layer is not prone to layering.

Description

Technical Field

[0001] The utility model relates to the technical field of micro speakers, and particularly relates to a waterproof and breathable film assembly. Background Art

[0002] With the popularization of mobile devices such as smart phones, the demand for micro speakers shows an increasing trend.

[0003] More and more users hope that their mobile devices have waterproof performance to avoid damage caused by accidental water ingress accidents during use. To solve this problem, a waterproof and breathable film needs to be pasted at the sound outlet of some micro speaker modules.

[0004] The waterproof and breathable film assembly includes a double-sided adhesive layer, a waterproof and breathable film layer, and a release layer stacked in sequence. Among them, the double-sided adhesive layer is integrally in a ring frame shape, and the hollow area of the double-sided adhesive layer corresponds to the sound outlet of the micro speaker module. The release layer is adhesively bonded to the waterproof and breathable film layer with a small adhesive force through the adhesive area on it, and the release layer also has a protrusion for facilitating the removal of the release layer. After the waterproof and breathable film assembly is installed on the micro speaker module through the double-sided adhesive layer, the release layer needs to be torn off. However, in the actual operation process, since the side of the release layer close to the waterproof and breathable film layer is all adhesive areas, during the process of tearing off the release layer using the protrusion, the waterproof and breathable film layer is prone to delamination from the edge at one end close to the protrusion, and part of the structure of the waterproof and breathable film layer is torn off together with the release layer, so that the waterproof and breathable film layer is damaged before the product leaves the factory, affecting the product yield. Summary of the Utility Model

[0005] The technical problem solved by the utility model is to provide a waterproof and breathable film assembly in which the waterproof and breathable film layer is not prone to delamination when the release layer is torn off.

[0006] To solve the above technical problem, the technical solution adopted by the utility model is: a waterproof and breathable film assembly, including:

[0007] A double-sided adhesive layer, the double-sided adhesive layer is integrally in a ring frame shape;

[0008] A waterproof and breathable film layer, one side of the waterproof and breathable film layer is in contact with the double-sided adhesive layer and forms an adhesive fixation;

[0009] The release layer, the release layer includes a connected body and a protruding portion, the protruding portion is located at one end of the body and protrudes outward relative to the edge of the waterproof and breathable film layer; the contour size of the body is the same as the contour size of the waterproof and breathable film layer, when looking down at the waterproof and breathable film assembly, the body completely overlaps with the waterproof and breathable film layer; the side of the body close to the waterproof and breathable film layer is the connection surface, the connection surface has an adhesive area for adhering to the other side of the waterproof and breathable film layer, the adhesive area is located in the middle of the connection surface, and the area of the connection surface other than the adhesive area is not adhered to the waterproof and breathable film layer.

[0010] In one embodiment, the adhesive area is rectangular.

[0011] In one embodiment, the area of the adhesive area occupies 60%-90% of the area of the connection surface.

[0012] In one embodiment, the area of the adhesive area occupies 70%-80% of the area of the connection surface.

[0013] In one embodiment, the protruding portion is integrally rectangular.

[0014] In one embodiment, one long side of the protruding portion is collinear with one side of the body.

[0015] In one embodiment, the width of the protruding portion is less than the width of the body.

[0016] In one embodiment, the adhesion between the adhesive area and the waterproof and breathable film layer is less than the adhesion between the double-sided adhesive layer and the waterproof and breathable film layer.

[0017] The beneficial effect of the present utility model is that: in this waterproof and breathable film assembly, only a partial area on the connection surface of the release layer is provided with an adhesive area, and the connection surface does not form an adhesion with the waterproof and breathable film layer at the edge position of the waterproof and breathable film layer close to the protruding portion, thereby effectively improving the phenomenon that the waterproof and breathable film layer is delaminated during the process of tearing off the release layer by using the protruding portion, which is beneficial to ensuring the integrity of the waterproof and breathable film, and further improving the production yield of the micro speaker module and reducing the production cost of the micro speaker module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0019] Figure 1The bottom view of the waterproof and breathable film assembly according to the first embodiment of the present utility model;

[0020] Figure 2 The exploded view of the waterproof and breathable film assembly according to the first embodiment of the present utility model;

[0021] Figure 3 The bottom view of the release layer in the waterproof and breathable film assembly according to the first embodiment of the present utility model.

[0022] Explanation of the reference numerals in the drawings:

[0023] 1. Double-sided adhesive layer;

[0024] 2. Waterproof and breathable film layer;

[0025] 3. Release layer; 31. Body; 32. Protruding part; 33. Adhesive area; 34. Connection surface. Detailed implementation manners

[0026] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings.

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between the components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0030] In addition, the meaning of "and / or" as used throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution of "A", or the solution of "B", or the solution where both are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0031] In this application, unless otherwise clearly defined and limited, the terms "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] Please refer to Figures 1 to 3 , Embodiment 1 of this utility model is: A waterproof and breathable film assembly, including a double-sided adhesive layer 1, a waterproof and breathable film layer 2, and a release layer 3. The double-sided adhesive layer 1 is in an overall ring frame shape; One side of the waterproof and breathable film layer 2 is in contact with the double-sided adhesive layer 1 and forms an adhesive fixation; The release layer 3 includes a connected body 31 and a protruding portion 32. The protruding portion 32 is located at one end of the body 31 and protrudes outward relative to the edge of the waterproof and breathable film layer 2; The contour size of the body 31 is the same as the contour size of the waterproof and breathable film layer 2. When looking down at the waterproof and breathable film assembly, the body 31 completely overlaps with the waterproof and breathable film layer 2; The side of the body 31 close to the waterproof and breathable film layer 2 is a connection surface 34, and the connection surface 34 has an adhesive area 33 for adhering to the other side of the waterproof and breathable film layer 2. The adhesive area 33 is located in the middle of the connection surface 34, and the areas of the connection surface 34 other than the adhesive area 33 are not adhered to the waterproof and breathable film layer 2. That is to say, there is no adhesive on the two end areas of the connection surface 34.

[0034] In this embodiment, the adhesive area 33 is rectangular. Optionally, the width of the adhesive area 33 is the same as the width of the body 31. In other embodiments, it is also possible that the width of the adhesive area 33 is slightly smaller than the width of the body 31.

[0035] To prevent the release layer 3 from unexpectedly detaching from the waterproof and breathable film layer 2, the area of the adhesive region 33 occupies 60%-90% of the area of the connection surface 34. Further preferably, the area of the adhesive region 33 occupies 70%-80% of the area of the connection surface 34. In this embodiment, the area of the adhesive region 33 occupies 75% of the area of the connection surface 34.

[0036] The protruding portion 32 is generally rectangular. Optionally, one long side of the protruding portion 32 is collinear with one side of the body 31, and the width of the protruding portion 32 is less than the width of the body 31.

[0037] The adhesive force between the adhesive region 33 and the waterproof and breathable film layer 2 is less than the adhesive force between the double-sided adhesive layer 1 and the waterproof and breathable film layer 2. This can prevent reverse release from occurring when the release layer 3 is torn off.

[0038] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made using the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A waterproof breathable membrane assembly, characterized in that: include A double-sided adhesive layer, the double-sided adhesive layer is in the shape of a ring frame as a whole; A waterproof and breathable membrane layer, one side of which is in contact with the double-sided adhesive layer to form an adhesive fixation; A release layer, wherein the release layer comprises a main body and a protrusion connected to each other, wherein the protrusion is located at one end of the main body and protrudes outward relative to the edge of the waterproof breathable membrane layer; the outline size of the main body is the same as the outline size of the waterproof breathable membrane layer, and when the waterproof breathable membrane assembly is viewed from above, the main body and the waterproof breathable membrane layer completely overlap; the side of the main body close to the waterproof breathable membrane layer is a connecting surface, and the connecting surface has a back glue area for bonding the other side of the waterproof breathable membrane layer, and the back glue area is located in the middle of the connecting surface, and the area of ​​the connecting surface other than the back glue area is not bonded to the waterproof breathable membrane layer.

2. The waterproof breathable membrane assembly according to claim 1, characterized in that: The adhesive backing area is rectangular.

3. The waterproof breathable membrane assembly according to claim 1, characterized in that: The area of ​​the adhesive backing area occupies 60%-90% of the area of ​​the connecting surface.

4. The waterproof breathable membrane assembly according to claim 3, characterized in that: The area of ​​the adhesive backing area occupies 70%-80% of the area of ​​the connecting surface.

5. The waterproof breathable membrane assembly according to claim 1, characterized in that: The protrusion is rectangular in shape as a whole.

6. The waterproof breathable membrane assembly according to claim 5, characterized in that: A long side of the protruding portion is colinearly arranged with a side of the main body.

7. The waterproof breathable membrane assembly according to claim 6, characterized in that: The width of the protrusion is smaller than the width of the body.

8. The waterproof breathable membrane assembly according to claim 1, characterized in that: The bonding force between the adhesive backing area and the waterproof breathable membrane layer is smaller than the bonding force between the double-sided adhesive layer and the waterproof breathable membrane layer.

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