A waterproof breathable membrane and its application

Abstract

The invention relates to a waterproof breathable membrane and an application thereof, belonging to the technical field of waterproof breathable fabrics. The waterproof breathable membrane comprises an inner layer fabric and an outer layer fabric, a first inclined portion and a first through hole of a second inclined portion of the inner layer fabric jointly form a bell mouth, the outer layer fabric is provided with a second through hole, the second through hole penetrates the outer layer fabric from the inside to the outside, the bell mouth is located in the second through hole, the first through hole comprises an air inlet end and an air outlet end, the air outlet end protrudes from the outer surface of the outer layer fabric; so that a part of the inner layer fabric is embedded in the outer layer fabric, the internal gas easily moves from the inside of the inner layer fabric to the outside through the first through hole, and the external gas is not easy to enter the inner layer from the outer layer fabric due to the limitation of the bell mouth, so that the ventilation effect from the inside to the outside is good, and the ventilation effect from the outside to the inside is poor; the first blocking portion and the second blocking portion protrude from the air outlet end, which can prevent moisture from entering the inner layer fabric through the air outlet end, thereby improving the waterproof performance.

Description

Technical Field

[0001] The invention relates to the technical field of waterproof and breathable fabrics, and in particular to a waterproof and breathable membrane and applications thereof. Background Art

[0002] The waterproof breathable membrane mainly has three layers of structure, namely PP spunbond non-woven fabric, PE polymer breathable membrane and PP spunbond non-woven fabric. The PP spunbond non-woven fabric is located in the outer and inner layers of the waterproof breathable membrane, i.e. the upper and lower layers. The PE polymer breathable membrane is in the middle layer of the waterproof breathable membrane. The PE polymer breathable membrane is the key part of the waterproof breathable membrane to achieve the breathable function. There are a large number of tiny pores inside it. The size of these pores is between gas molecules and liquid molecules, so that gas molecules can pass through the breathable holes during diffusion movement to achieve air circulation, while liquid molecules cannot pass through due to surface tension, thus achieving a waterproof effect.

[0003] More information related to the above technical solution can also be found in the following documents:

[0004] For example, the patent announcement number CN211222370U discloses a waterproof breathable membrane, comprising: an anti-sticking non-woven fabric layer, which includes an inner surface and an outer surface arranged opposite to the inner surface, the anti-sticking non-woven fabric layer defines a plurality of wavy channels passing through the inner surface and the outer surface; a polytetrafluoroethylene film layer, which is arranged on the inner surface, the polytetrafluoroethylene film layer is formed with a plurality of first wavy protrusions respectively embedded in the wavy channels; a non-woven fabric base layer, which is formed on the polytetrafluoroethylene film layer, the non-woven fabric base layer is a double-layer cavity structure, which includes a first non-woven fabric base layer and a second non-woven fabric base layer, a gap is formed between the first non-woven fabric base layer and the second non-woven fabric base layer, and the first non-woven fabric base layer is formed with a plurality of second wavy protrusions respectively embedded in the first wavy protrusions.

[0005] In the process of implementing the present invention, the inventors found that the prior art has the following problems:

[0006] The prior art requires changing the structure of the membrane layer, and the air permeability inside and outside is the same, and the waterproof performance is poor. Summary of the invention

[0007] Therefore, it is necessary to provide a waterproof breathable membrane and its application, so as to solve the technical problem that the breathability inside and outside of the membrane is the same and the waterproof performance is poor in the prior art.

[0008] To achieve the above objectives, in a first aspect, the present invention provides a waterproof breathable membrane, comprising:

[0009] An inner layer of fabric, the inner layer of fabric comprising a first inclined portion and a second inclined portion, the first inclined portion and the second inclined portion being connected to each other, a first through hole being provided at the connection between the first inclined portion and the second inclined portion, the first through hole penetrating the inner layer of fabric from inside to outside, the first inclined portion, the second inclined portion, and the first through hole jointly forming a bell mouth, the inner diameter of the bell mouth being greater than the outer diameter of the bell mouth; and

[0010] An outer layer of fabric, the outer layer of fabric comprising a second through hole, the second through hole penetrating the outer layer of fabric from inside to outside, a part of the bell mouth structure being located at the second through hole, the outer layer of fabric being provided with a first connecting portion cooperating with the first inclined portion, and a second connecting portion cooperating with the second inclined portion, the first connecting portion being connected to the first inclined portion, the second connecting portion being connected to the second inclined portion, the first through hole comprising an air inlet end and an air outlet end, the air outlet end protruding from an outer surface of the outer layer of fabric;

[0011] Wherein, the outer layer of fabric also includes a first blocking part and a second blocking part, the first blocking part and the second blocking part are located on the outside of the outer layer of fabric, the first blocking part is located above the air outlet end, and the second blocking part is located below the air outlet end, the first blocking part and the second blocking part protrude from the air outlet end, and the outer layer of fabric includes a polymer breathable film layer and a spunbond non-woven fabric layer, and the spunbond non-woven fabric layer is located on the outside of the polymer breathable film layer.

[0012] As an embodiment of the present invention, the inner layer of fabric includes more than two arched float lines and a base layer, the more than two arched float lines are arranged along a first direction, the arched float lines are arranged on the inner side of the base layer, the two ends of the arched float lines are respectively connected to the inner side of the base layer, and a first gap is left between the middle section of the arched float lines and the inner side of the base layer.

[0013] As an embodiment of the present invention, more than two arched floating lines are arranged in a vertical direction, a second gap is left between two adjacent arched floating lines, and the bell mouth is located at the second gap.

[0014] As an embodiment of the present invention, the inner layer fabric includes more than two rows of arched floating lines, and a third gap is left between the two rows of arched floating lines.

[0015] As an embodiment of the present invention, the inner layer of fabric also includes a supporting coil, which is located in the first gap, one end of the supporting coil is connected to the middle section of the arched float line, and the other end of the supporting coil is connected to the inner side of the base layer.

[0016] As an embodiment of the present invention, the outer layer of fabric also includes a polyester film layer and a mesh layer. The polymer breathable film layer, the polyester film layer, the mesh layer and the spunbonded non-woven fabric layer are arranged in sequence from the inside to the outside. The upper and lower sides of the polyester film layer are provided with raised portions, the polyester film layer is provided with more than two air holes, and the mesh layer is provided with more than two mesh holes.

[0017] As an embodiment of the present invention, the top of the polyester film layer is provided with two or more first protrusions, the two or more first protrusions are arranged in a horizontal direction, and an air hole is provided between two adjacent first protrusions;

[0018] The bottom of the polyester film layer is provided with two or more second protrusions, which are arranged in a horizontal direction, and the cross-sectional shape of the first protrusion is semicircular, and / or the cross-sectional shape of the second protrusion is semicircular.

[0019] As an embodiment of the present invention, the outer surface of the spunbond nonwoven fabric layer is provided with more than two first drainage grooves, the more than two first drainage grooves are parallel to each other, and the more than two first drainage grooves extend in a horizontal direction.

[0020] As an embodiment of the present invention, the outer surface of the spunbond non-woven fabric layer is provided with more than two second drainage grooves, the more than two second drainage grooves are parallel to each other, the more than two second drainage grooves extend in the vertical direction, the second drainage grooves are arranged parallel to the first drainage grooves, and the second through hole is located at the connection between the first drainage groove and the second drainage groove.

[0021] Different from the prior art, the above technical solution forms a bell mouth through the first inclined portion of the inner layer of fabric and the first through hole of the second inclined portion, the inner diameter of the bell mouth is larger than the outer diameter of the bell mouth; the outer layer of fabric is provided with a second through hole, the second through hole penetrates the outer layer of fabric from the inside to the outside, the bell mouth is located in the second through hole, the first through hole includes an air inlet end and an air outlet end, the air outlet end protrudes from the outer surface of the outer layer of fabric; so that a part of the inner layer of fabric is embedded in the outer layer of fabric, the internal gas can easily move from the inside of the inner layer of fabric to the outside through the first through hole, and the external gas cannot enter the outer layer of fabric due to the limitation of the bell mouth. It is easy for the outer fabric to enter the inner layer, so that the ventilation effect from the inside to the outside is good, and the ventilation effect from the outside to the inside is poor; the first connecting part is connected to the first inclined part, and the second connecting part is connected to the second inclined part, so as to improve the connection effect between the inner fabric and the outer fabric; the first blocking part is located above the air outlet end, and the second blocking part is located below the air outlet end, and the first blocking part and the second blocking part protrude from the air outlet end, so that moisture can be prevented from entering the inner fabric through the air outlet end, thereby improving the waterproof performance; the outer fabric includes a polymer breathable film layer and a spunbonded non-woven fabric layer, so that the outer fabric serves as a waterproof layer.

[0022] Beneficial Effects

[0023] Compared with the prior art, the waterproof breathable membrane of the present application has good air permeability from the inside to the outside and poor air permeability from the outside to the inside, thereby improving the connection effect between the inner layer of fabric and the outer layer of fabric, preventing moisture from entering the inner layer of fabric through the air outlet, and improving the waterproof performance.

[0024] To achieve the above objectives, in a second aspect, the inventor provides a waterproof and breathable membrane as described in any one of the above items, which is applied to clothing.

[0025] Different from the prior art, the waterproof breathable membrane of the technical solution of the present application can be applied to outdoor jackets. The internal gas can easily move from the inside of the inner layer of the fabric to the outside through the first through hole, while the external gas is not easy to enter the inner layer from the outer layer of the fabric due to the limitation of the bell mouth, so that the air permeability from the inside to the outside is good, and the air permeability from the outside to the inside is poor; moisture can be prevented from entering the inner layer of the fabric through the air outlet, thereby improving the waterproof performance.

[0026] The above-mentioned records related to the invention content are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation mode and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0028] In the drawings of the specification:

[0029] Figure 1 This is a schematic cross-sectional view of a waterproof breathable membrane according to an embodiment of the present application;

[0030] Figure 2 A schematic cross-sectional view of a waterproof breathable membrane according to another embodiment of the present application;

[0031] Figure 3 This is a schematic diagram of the structure of the inner layer fabric of one embodiment of the present application;

[0032] Figure 4 This is a schematic diagram of the structure of the outer layer fabric of one embodiment of the present application;

[0033] Figure 5 This is a schematic structural diagram of a polyester film layer according to an embodiment of the present application;

[0034] Figure 6This is a schematic structural diagram of the outer surface of a spunbond nonwoven fabric layer according to an embodiment of the present application.

[0035] The reference numerals in the above drawings are described as follows:

[0036] 1. inner layer fabric, 11. first inclined portion, 12. second inclined portion, 13. first through hole, 131. air inlet end, 132. air outlet end, 14. arched floating line, 15. base layer, 16. first gap, 17. second gap, 18. supporting coil,

[0037] 2. outer fabric, 21. second through hole, 22. first connecting portion, 23. second connecting portion, 24. first blocking portion, 25. second blocking portion, 26. polymer breathable film layer, 27. spunbond nonwoven fabric layer, 271. first drainage groove, 272. second drainage groove, 28. polyester film layer, 281. first protrusion, 282. air hole, 283. second protrusion, 29. mesh layer. DETAILED DESCRIPTION

[0038] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0039] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0040] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0041] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0042] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0043] Without further limitations, in this application, the words "include", "comprises", "has" or other similar open-ended expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0044] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0045] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0046] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a direct connection, or an indirect connection through an intermediate medium; it can be a relationship in which two components are combined together, or an interaction relationship between two components, or a connection between the insides of two structures. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0047] The prior art requires changing the structure of the membrane layer, and the air permeability inside and outside is the same, and the waterproof performance is poor.

[0048] In view of this, the embodiment of the present application provides a waterproof and breathable membrane including an inner layer fabric 1 and an outer layer fabric 2, wherein the first inclined portion 11, the second inclined portion 12 and the first through hole 13 of the inner layer fabric 1 jointly form a bell mouth, and the inner diameter of the bell mouth is greater than the outer diameter of the bell mouth; the outer layer fabric 2 is provided with a second through hole 21, the second through hole 21 penetrates the outer layer fabric 2 from the inside to the outside, and the bell mouth is located in the second through hole 21, the first through hole 13 includes an air inlet end 131 and an air outlet end 132, and the air outlet end 132 protrudes from the outer surface of the outer layer fabric 2; so that a part of the inner layer fabric 1 is embedded in the outer layer fabric 2, and the internal gas can easily move outward from the inside of the inner layer fabric 1 through the first through hole 13, while the external gas can easily move outward from the inside of the inner layer fabric 1 due to the bell mouth. Due to the limitation of the bell mouth, it is not easy for the outer layer fabric 2 to enter the inner layer, so that the ventilation effect from the inside to the outside is good, and the ventilation effect from the outside to the inside is poor; the first connecting part 22 is connected to the first inclined part 11, and the second connecting part 23 is connected to the second inclined part 12, so as to improve the connection effect between the inner layer fabric 1 and the outer layer fabric 2; by locating the first blocking part 24 above the air outlet end 132 and the second blocking part 25 below the air outlet end 132, the first blocking part 24 and the second blocking part 25 protrude from the air outlet end 132, so as to prevent moisture from entering the inner layer fabric 1 through the air outlet end 132, thereby improving the waterproof performance; the outer layer fabric 2 includes a polymer breathable membrane layer 26 and a spunbonded non-woven fabric layer 27, so that the outer layer fabric 2 serves as a waterproof layer.

[0049] See also Figures 1 to 6 The present embodiment relates to a waterproof breathable membrane, comprising an inner layer fabric 1 and an outer layer fabric 2, the inner layer fabric 1 comprising a first inclined portion 11 and a second inclined portion 12, the first inclined portion 11 and the second inclined portion 12 are connected to each other, a first through hole 13 is provided at the connection between the first inclined portion 11 and the second inclined portion 12, the first through hole 13 penetrates the inner layer fabric 1 from inside to outside, the first inclined portion 11, the second inclined portion 12, and the first through hole 13 together form a bell mouth, the inner diameter of the bell mouth is greater than the outer diameter of the bell mouth;

[0050] The outer layer fabric 2 includes a second through hole 21, which penetrates the outer layer fabric 2 from the inside to the outside, and a part of the bell mouth structure is located at the second through hole 21. The outer layer fabric 2 is provided with a first connecting portion 22 matched with the first inclined portion 11 and a second connecting portion 23 matched with the second inclined portion 12. The first connecting portion 22 is connected to the first inclined portion 11, and the second connecting portion 23 is connected to the second inclined portion 12. The first through hole 13 includes an air inlet end 131 and an air outlet end 132, and the air outlet end 132 protrudes from the outer surface of the outer layer fabric 2;

[0051] Among them, the outer layer fabric 2 also includes a first blocking portion 24 and a second blocking portion 25, the first blocking portion 24 and the second blocking portion 25 are located on the outside of the outer layer fabric 2, the first blocking portion 24 is located above the air outlet end 132, and the second blocking portion 25 is located below the air outlet end 132, the first blocking portion 24 and the second blocking portion 25 protrude from the air outlet end 132, and the outer layer fabric 2 includes a polymer breathable film layer 26 and a spunbond non-woven fabric layer 27, and the spunbond non-woven fabric layer 27 is located on the outside of the polymer breathable film layer 26.

[0052] The direction indicated by arrow y is the vertical direction;

[0053] In some embodiments, the inner fabric 1 is connected to the outer fabric 2 by glue;

[0054] In some embodiments, the inner fabric 1 forms a bell mouth, the bell mouth protrudes toward the outer fabric 2, the outer fabric 2 is provided with a second through hole 21, the bell mouth protrudes toward the second through hole 21, and the fabric of the bell mouth is connected to the outer fabric 2; it is easy for the internal air to move from the part with a larger diameter of the bell mouth to the part with a smaller diameter of the bell mouth, thereby improving the air permeability from the inside to the outside, while it is difficult for the external air to move from the part with a smaller diameter of the bell mouth to the inside, thereby improving the windproofness of the waterproof breathable membrane;

[0055] In some embodiments, the outer layer fabric 2 is provided with a first blocking portion 24 and a second blocking portion 25, which are subsequently processed on the outer side of the outer layer fabric 2, the first blocking portion 24 is located directly above the air outlet end 132 of the bell mouth in the vertical direction, and the second blocking portion 25 is located directly below the air outlet end 132 of the bell mouth in the vertical direction. When rain falls on the outer side of the outer layer fabric 2 from top to bottom, due to the blocking of the first blocking portion 24, rainwater can be prevented from penetrating inward from the air outlet end 132 of the bell mouth, thereby improving the waterproof performance of the outer layer fabric 2;

[0056] In other embodiments, the first blocking portion 24 and the second blocking portion 25 may form an annular blocking structure to prevent external water from entering the first through hole 13;

[0057] The other parts of the outer fabric 2 are made of a polymer breathable membrane layer 26 to form a waterproof layer, so they are only breathable and not water-permeable. Only the first through hole 13 is water-permeable. If the aperture of the first through hole 13 is too small, it is also not water-permeable. It can be set according to actual conditions.

[0058] According to some embodiments of the present application, optionally, Figure 3As shown, the inner layer fabric 1 includes more than two arched float lines 14 and a base layer 15. The more than two arched float lines 14 are arranged along a first direction, the arched float lines 14 are arranged on the inner side of the base layer 15, and the two ends of the arched float lines 14 are respectively connected to the inner side of the base layer 15. A first gap 16 is left between the middle section of the arched float lines 14 and the inner side of the base layer 15.

[0059] More than two arched floating lines 14 are on the skin-contacting side of the inner fabric 1, the middle section of the arched floating line 14 contacts the human skin, and only the top of the arched structure contacts the skin, which reduces the contact area between the inner fabric and the skin, reduces the sticky feeling, and keeps the inner fabric 1 dry;

[0060] The sweat is absorbed by the arched floating line 14 and flows from the arched floating line 14 to the base layer 15 . The arched floating line 14 forms a suction and discharge channel, which facilitates the sweat to flow from the arched floating line 14 to the base layer 15 .

[0061] According to some embodiments of the present application, optionally, more than two arched float lines 14 are arranged in a vertical direction, a second gap 17 is left between two adjacent arched float lines 14, and the bell mouth is located at the second gap 17.

[0062] In some embodiments, a second gap 17 is provided between two adjacent upper and lower arched float lines 14, and the sizes of the plurality of second gaps 17 are the same;

[0063] In this way, a second gap 17 is left between the upper and lower parts of two adjacent arched floating lines 14, which further reduces the contact area between the base layer 15 and the skin, strengthens the air circulation of the inner layer of fabric 1, and quickly absorbs sweat. At the same time, the bell mouth is located at the second gap 17, which facilitates the internal air to flow to the outside of the waterproof breathable membrane. As long as the aperture of the first through hole 13 can pass sweat, the sweat can also follow the first inclined portion 11 and the second inclined portion 12, enter the first through hole 13 and be discharged outward, diffuse from the inside to the outside, and improve its sweat removal effect.

[0064] In some embodiments, the yarn fiber fineness of the base layer 15 is smaller than the yarn fiber fineness of the arch float line 14. The yarn fiber fineness of the base layer 15 is smaller than the yarn fiber fineness of the arch float line 14. This will produce a capillary effect, guiding sweat from the inner layer to the outer layer, achieving single conduction and facilitating the flow of sweat from the arch float line 14 to the base layer 15.

[0065] In some embodiments, the diameters of both ends of the arched float line 14 are equal to the diameter of the middle section of the arched float line 14 to facilitate production.

[0066] According to some embodiments of the present application, optionally, the inner layer fabric 1 includes more than two rows of arched floating lines 14 , and a third gap is left between the two rows of arched floating lines 14 .

[0067] The sizes of the third gaps between the two rows of arched float lines 14 are the same, which facilitates the production of the inner layer fabric 1 and further enhances the air circulation of the inner layer fabric 1;

[0068] More than two rows of arched floating lines 14 can be arranged according to actual conditions;

[0069] According to some embodiments of the present application, optionally, the inner layer fabric 1 also includes a supporting coil 18, which is located in the first gap 16, one end of the supporting coil 18 is connected to the middle section of the arched float line 14, and the other end of the supporting coil 18 is connected to the inner side of the base layer 15.

[0070] The support loop 18 can be obtained by some weaving methods such as needle drawing;

[0071] In this way, the arched floating line 14 is supported by the support coil 18 to prevent the arched floating line 14 from collapsing, so that the arched floating line 14 is attached to the skin;

[0072] Through the first slit 16, the second slit 17, and the third slit structure, the back of the fabric is formed into a plurality of arc-shaped three-dimensional structures, so that the contact area between the inner layer of fabric 1 and the skin is reduced, and the air circulation of the fabric is enhanced. When the air circulation of the inner layer is good, the clothes are not easy to be stained by the skin;

[0073] The yarn fiber fineness of the base layer 15 is smaller than that of the arched floating line 14, and the sweat diffuses from the inside to the outside and is finally discharged from the air outlet 132 of the first through hole 13, so that the single-channel moisture absorption and quick drying can be achieved, and the sweat will not stick to the body after sweating;

[0074] According to some embodiments of the present application, optionally, Figure 4 As shown, the outer fabric 2 also includes a polyester film layer 28 and a mesh layer 29. The polymer breathable film layer 26, the polyester film layer 28, the mesh layer 29 and the spunbonded non-woven fabric layer 27 are arranged in sequence from the inside to the outside. The upper and lower sides of the polyester film layer 28 are provided with protrusions, the polyester film layer 28 is provided with more than two air holes 282, and the mesh layer 29 is provided with more than two mesh holes.

[0075] The pores 282 of the polyester film layer 28 and the mesh holes of the mesh layer 29 allow for ventilation;

[0076] In some embodiments, the polymer breathable film layer 26 is a PE polymer breathable film, and its principle is a conventional technical means, which will not be repeated here;

[0077] In some embodiments, the polyester film layer 28 and the raised portion may be integrally formed, and the raised portion may also be fixed on the polyester film layer 28, which are all within the protection scope of this embodiment;

[0078] In some embodiments, the mesh layer 29 is disposed between the polyester film layer 28 and the spunbonded nonwoven fabric layer 27. The mesh layer 29 is a tensile mesh, which is made by interweaving the weft and warp threads formed by twisting fiber bundles mainly made of nylon material, and combined with the PP spunbonded nonwoven fabric, so that the waterproof and breathable membrane has a good tear resistance effect, thereby improving the overall structural strength.

[0079] In some embodiments, the mesh layer 29 includes weft threads and warp threads, which are interwoven to form the mesh layer 29. The weft threads and the warp threads are both made of two or more spirally twisted fiber bundles, and the fiber bundles are made of nylon. The physical properties of the nylon material of the fiber bundles can be used to improve the wear resistance, breaking strength, breaking elongation, elastic recovery rate and fatigue resistance of the mesh layer 29.

[0080] In some embodiments, the spunbond nonwoven fabric layer 27 is a PP spunbond nonwoven fabric, and its principle is a conventional technical means, which will not be repeated here;

[0081] In this embodiment, the polymer breathable membrane layer 26 is protected by the cooperation of the polyester film layer 28, the mesh layer 29, and the spunbond non-woven fabric layer 27, thereby improving the tear resistance of the waterproof breathable membrane and improving the overall structural strength; the air holes 282 set in the polyester film layer 28 can cooperate with the polymer breathable membrane layer 26 to play a waterproof and breathable role, and the raised portion is used to create a gap between the polyester film layer 28 and the polymer breathable membrane layer 26, which can improve the breathability effect. At the same time, the raised portion is used to destroy the water film formed on the surface of the polymer breathable membrane layer 26 when the waterproof breathable membrane is folded, thereby improving the waterproof and breathable effect.

[0082] According to some embodiments of the present application, optionally, the top of the polyester film layer 28 is provided with two or more first protrusions 281, the two or more first protrusions 281 are arranged in a horizontal direction, and an air hole 282 is provided between two adjacent first protrusions 281; the bottom of the polyester film layer 28 is provided with two or more second protrusions 283, the two or more second protrusions 283 are arranged in a horizontal direction, the cross-sectional shape of the first protrusion 281 is semicircular, and / or the cross-sectional shape of the second protrusion 283 is semicircular.

[0083] In this way, by means of more than two first protrusions 281, a gap is formed between the polyester film layer 28 and the mesh layer 29, thereby improving the air permeability between the polyester film layer 28 and the mesh layer 29; by means of more than two second protrusions 283, a gap is formed between the polyester film layer 28 and the polymer breathable membrane layer 26, thereby improving the air permeability between the polyester film layer 28 and the polymer breathable membrane layer 26; the first protrusion 281 and the second protrusion 283 are fixed to the top or bottom of the polyester film layer 28 by glue, and the cross-sectional shape of the first protrusion 281 and the second protrusion 283 is semicircular, which facilitates the first protrusion 281 and the second protrusion 283 to be fixed on the polyester film layer 28.

[0084] According to some embodiments of the present application, optionally, the outer surface of the spunbond non-woven fabric layer 27 is provided with more than two first drainage grooves 271, the more than two first drainage grooves 271 are parallel to each other, and the more than two first drainage grooves 271 extend in a horizontal direction.

[0085] like Figure 6 As shown, the direction indicated by arrow x is the horizontal direction;

[0086] In this way, the more than two first drainage grooves 271 are parallel to each other and extend in the horizontal direction, so that the water on the spunbond non-woven fabric layer 27 can be easily drained in the horizontal direction.

[0087] According to some embodiments of the present application, optionally, the outer surface of the spunbond non-woven fabric layer 27 is provided with two or more second drainage grooves 272, the two or more second drainage grooves 272 are parallel to each other, the two or more second drainage grooves 272 extend in a vertical direction, the second drainage grooves 272 and the first drainage grooves 271 are arranged parallel to each other, and the second through hole 21 is located at the connection between the first drainage groove 271 and the second drainage groove 272.

[0088] like Figure 6 As shown, the direction indicated by arrow y is the vertical direction;

[0089] The first drainage groove 271 and the second drainage groove 272 are connected to each other, which can play a good role in drainage, prevent water droplets from gathering on the spunbond non-woven fabric layer 27, and reduce the conditions for the formation of water film;

[0090] The second through hole 21 is located at the connection between the first drainage groove 271 and the second drainage groove 272. Gas or sweat is discharged from the second through hole 21. The outer circle of the second through hole 21 is provided with a blocking portion.

[0091] In this way, by having more than two second drainage grooves 272 extending along the second direction, the second drainage grooves 272 and the first drainage grooves 271 are arranged parallel to each other, so that the water on the spunbond non-woven fabric layer 27 can be easily drained along the second direction.

[0092] In some embodiments, the polymer breathable membrane layer 26, the polyester film layer 28, the mesh layer 29, and the spunbond non-woven fabric layer 27 are bonded by point gluing, and the parts where the edges of the polymer breathable membrane layer 26, the polyester film layer 28, the mesh layer 29, and the spunbond non-woven fabric layer 27 are combined are coated with a waterproof resin soft glue.

[0093] In this way, by coating the combined edges of the polymer breathable membrane layer 26, the polyester film layer 28, the mesh layer 29, and the spunbond non-woven fabric layer 27 with waterproof resin soft glue, the combined edges of the polymer breathable membrane layer 26, the polyester film layer 28, the mesh layer 29, and the spunbond non-woven fabric layer 27 can be prevented from warping, thereby ensuring the overall waterproof effect of the waterproof breathable membrane.

[0094] In a second aspect, this embodiment also relates to a waterproof and breathable membrane according to any one of the above items, which is applied to clothing.

[0095] In some embodiments, the waterproof and breathable membrane can be used on outdoor jackets and other application scenarios that require waterproof and breathable properties.

[0096] A waterproof breathable membrane may be provided on the portion of the garment that needs to be waterproof and breathable, such as the front chest and the back, rather than the entire garment being made of the waterproof breathable membrane.

[0097] In this way, the first inclined portion 11 and the first through hole 13 of the second inclined portion 12 of the inner layer fabric 1 jointly form a bell mouth, and the inner diameter of the bell mouth is larger than the outer diameter of the bell mouth; the outer layer fabric 2 is provided with a second through hole 21, and the second through hole 21 penetrates the outer layer fabric 2 from the inside to the outside, and the bell mouth is located in the second through hole 21, and the first through hole 13 includes an air inlet end 131 and an air outlet end 132, and the air outlet end 132 protrudes from the outer surface of the outer layer fabric 2; so that a part of the inner layer fabric 1 is embedded in the outer layer fabric 2, and the internal gas can easily move outward from the inside of the inner layer fabric 1 through the first through hole 13, while the external gas is not easy to move out from the outer layer fabric 2 due to the limitation of the bell mouth. The first connection part 22 is connected to the first inclined part 11, and the second connection part 23 is connected to the second inclined part 12, so as to improve the connection effect between the inner layer fabric 1 and the outer layer fabric 2; the first blocking part 24 is located above the air outlet end 132, and the second blocking part 25 is located below the air outlet end 132, and the first blocking part 24 and the second blocking part 25 protrude from the air outlet end 132, so that moisture can be prevented from entering the inner layer fabric 1 through the air outlet end 132, thereby improving the waterproof performance; the outer layer fabric 2 includes a polymer breathable membrane layer 26 and a spunbonded non-woven fabric layer 27, so that the outer layer fabric 2 serves as a waterproof layer.

[0098] It should be noted that, although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent process changes made using the contents of the present invention specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present invention.

Claims

1. A waterproof breathable membrane, characterized in that: include: An inner layer fabric, the inner layer fabric comprising a first inclined portion and a second inclined portion, the first inclined portion and the second inclined portion being connected to each other, a first through hole being provided at the connection between the first inclined portion and the second inclined portion, the first through hole penetrating the inner layer fabric from inside to outside, the first inclined portion, the second inclined portion, and the first through hole jointly forming a bell mouth, the inner diameter of the bell mouth being greater than the outer diameter of the bell mouth; as well as An outer layer of fabric, the outer layer of fabric comprising a second through hole, the second through hole penetrating the outer layer of fabric from inside to outside, a part of the bell mouth structure being located at the second through hole, the outer layer of fabric being provided with a first connecting portion cooperating with the first inclined portion, and a second connecting portion cooperating with the second inclined portion, the first connecting portion being connected to the first inclined portion, the second connecting portion being connected to the second inclined portion, the first through hole comprising an air inlet end and an air outlet end, the air outlet end protruding from an outer surface of the outer layer of fabric; Wherein, the outer layer fabric further includes a first blocking portion and a second blocking portion, the first blocking portion and the second blocking portion are located on the outside of the outer layer fabric, the first blocking portion is located above the air outlet end, the second blocking portion is located below the air outlet end, the first blocking portion and the second blocking portion protrude from the air outlet end, the outer layer fabric includes a polymer breathable film layer and a spunbonded non-woven fabric layer, the spunbonded non-woven fabric layer is located on the outside of the polymer breathable film layer; The outer fabric also includes a polyester film layer and a mesh layer. The polymer breathable film layer, the polyester film layer, the mesh layer and the spunbonded non-woven fabric layer are arranged in sequence from the inside to the outside. The upper and lower sides of the polyester film layer are provided with raised portions. The polyester film layer is provided with more than two air holes, and the mesh layer is provided with more than two mesh holes.

2. The waterproof breathable membrane according to claim 1, characterized in that: The inner layer of fabric includes more than two arched floating lines and a base layer. The more than two arched floating lines are arranged in an array. The arched floating lines are arranged on the inner side of the base layer. Both ends of the arched floating lines are respectively connected to the inner side of the base layer. A first gap is left between the middle section of the arched floating lines and the inner side of the base layer.

3. The waterproof breathable membrane according to claim 2, characterized in that: More than two arched floating lines are arranged in a vertical direction, a second gap is left between two adjacent arched floating lines, and the bell mouth is located at the second gap.

4. The waterproof breathable membrane according to claim 3, characterized in that: The inner layer of fabric includes more than two rows of arched floating lines, and a third gap is left between the two rows of arched floating lines.

5. The waterproof breathable membrane according to claim 4, characterized in that: The inner layer fabric also includes a supporting coil, which is located in the first gap, one end of which is connected to the middle section of the arched float line, and the other end of which is connected to the inner side of the base layer.

6. The waterproof breathable membrane according to claim 1, characterized in that: The top of the polyester film layer is provided with more than two first protrusions, the more than two first protrusions are arranged in a horizontal direction, and an air hole is provided between two adjacent first protrusions; The bottom of the polyester film layer is provided with two or more second protrusions, which are arranged in a horizontal direction, and the cross-sectional shape of the first protrusion is semicircular, and / or the cross-sectional shape of the second protrusion is semicircular.

7. The waterproof breathable membrane according to claim 6, characterized in that: The outer surface of the spunbond nonwoven fabric layer is provided with more than two first drainage grooves, the more than two first drainage grooves are parallel to each other, and the more than two first drainage grooves extend in a horizontal direction.

8. The waterproof breathable membrane according to claim 7, characterized in that: The outer surface of the spunbond non-woven fabric layer is provided with more than two second drainage grooves, the more than two second drainage grooves are parallel to each other, the more than two second drainage grooves extend in the vertical direction, the second drainage grooves are arranged parallel to the first drainage grooves, and the second through hole is located at the connection between the first drainage groove and the second drainage groove.

9. A waterproof breathable membrane according to any one of claims 1 to 8, characterized in that: Apply on clothes.

Images