A mask

Abstract

The present invention relates to the technical field of protective equipment, and in particular to a mask, comprising a mask body, wherein the mask body comprises an inner layer, a filter layer and an outer layer stacked in sequence; the inner layer comprises a first surface located on the inner side and a second surface located on the outer side; the first surface is provided with a first groove and a first protrusion at intervals; the second surface is provided with a second groove and a second protrusion at intervals. By forming a groove on the inner side of the inner layer, water vapor can flow along the groove and be discharged to the outside of the mask, thereby reducing the contact time between water vapor and the mask, and by forming a concave-convex structure on the outer side of the inner layer, a support for the melt-blown layer is formed, thereby reducing the contact area between the inner layer and the melt-blown layer, and reducing the influence of water vapor on the melt-blown layer.

Description

Technical Field

[0001] The present invention relates to the technical field of protective equipment, in particular to a mask. Background Art

[0002] Affected by the quality of the air environment, masks have become an indispensable part of our daily life. There are many types of masks on the market, but most masks have one thing in common: masks with good isolation effects are more difficult to breathe; masks that are easier to breathe have poor isolation effects. This is because masks are usually made of non-woven fabrics. In the national standard GB / T 32610, medical masks should have at least 3 layers, which we call SMS (2 layers of S layers and 1 layer of M layer). The highest number of layers in China is 5 layers, namely SMMMS (2 layers of S layers and 3 layers of M layers). The S here represents the spunbond layer (Spunbond), whose fiber diameter is relatively coarse, about 20 microns (μm). The main function of the 2 layers of S spunbond layer is to support the entire non-woven fabric structure, and it does not have much effect on the barrier. The most important thing in the mask is the barrier layer or meltblown layer M (Meltblown). The fiber diameter of the meltblown layer is relatively fine, about 2 microns (μm), so it is only one-tenth of the diameter of the spunbond layer, which plays a vital role in preventing bacteria and blood from penetrating. If there are too many meltblown layers M, breathing will be more difficult, but the barrier effect (protective effect) will be better.

[0003] Therefore, in the case that people cannot live without masks, masks with high filtration efficiency and low breathing resistance are the best choice for people. Especially in sports such as running, which require a lot of breathing, the air cannot quickly pass through the mask filter inlet and outlet cavities. In particular, the negative pressure generated during inhalation causes the mask to fit on the nose and mouth, exacerbating breathing difficulties. In winter, there is a large temperature difference between the exhaled gas and the ambient temperature, and a large amount of water vapor is adsorbed on the surface of the mask. During the inhalation process, saliva directly contacts the face, which affects the comfort on the one hand, and more importantly, the water vapor contacts the meltblown layer, which affects the filtration effect and increases the breathing resistance. Summary of the invention

[0004] The purpose of the present invention is to provide a mask in view of the problem that when the existing masks in the prior art are used, water vapor is adsorbed on the inner surface of the mask, and after the water vapor contacts the meltblown layer, the filtering effect is affected and the breathing resistance is increased. The mask is provided with a concave-convex structure on two surfaces of the inner layer. On the one hand, the concave-convex structure on the inner side forms a drainage channel, so that most of the water vapor can be discharged along the drainage channel; on the other hand, the concave-convex structure on the outer side forms a support for the meltblown layer, reducing the contact area between the inner layer and the meltblown layer; the contact area and contact time between the water vapor and the meltblown layer are reduced, the influence of the water vapor on the meltblown layer is reduced, and the filtering effect of the mask is improved.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A mask, comprising a mask body, wherein the mask body comprises an inner layer, a filter layer and an outer layer stacked together in sequence;

[0007] The inner layer includes a first surface located on the inner side and a second surface located on the outer side; the first surface is provided with a first groove and a first protrusion at intervals; the second surface is provided with a second groove and a second protrusion at intervals.

[0008] When worn, the side closer to the face is the inner side, and the side originally facing the face is the outer side. The inner side of the inner layer is the side of the inner layer closer to the face.

[0009] The first groove and the first protrusion are relative. They may be convex points formed on the cloth surface. The convex points are the first protrusions, and the intervals between the convex points are the grooves. The first groove and the first protrusion form a combination, and the second groove and the second protrusion form a combination. The two combination structures may be consistent or inconsistent.

[0010] By forming grooves on the inner side of the inner layer, water vapor can flow along the grooves and be discharged outside the mask, thereby reducing the contact time between water vapor and the mask. By forming a concave-convex structure on the outer side of the inner layer, support for the meltblown layer is formed, reducing the contact area between the inner layer and the meltblown layer, and reducing the influence of water vapor on the meltblown layer.

[0011] The inner layer is a non-woven fabric layer, or a combination of non-woven fabric and shaped cotton. The filter layer is a fabric layer composed of one or more layers of melt-blown fabric. The outer layer is a non-woven fabric layer, or a combination of non-woven fabric and shaped cotton.

[0012] As a preferred solution of the present invention, the first groove corresponds to the second protrusion, and the first protrusion corresponds to the second groove.

[0013] That is, the thickness of the entire inner layer is uniform, and the position where the first groove is formed on the inner side of the inner layer bulges outward to form a second bulge. Through the above arrangement, the thickness of the inner layer is reduced, which is conducive to air circulation.

[0014] As a preferred solution of the present invention, the cross section of the inner layer is in a first wave shape, the trough of the first wave shape corresponds to the first protrusion and the second groove; the peak of the first wave shape corresponds to the first groove and the second protrusion.

[0015] By setting the inner layer cross-section to a wavy shape, on the one hand, a first groove that is close to a straight line is formed, allowing water vapor to flow more smoothly; on the other hand, the wavy concave and convex surface makes it easier for the mask body to be shaped, forming a skeleton support, which has a better effect and is not easy to deform during use.

[0016] As a preferred embodiment of the present invention, the cross section of the outer layer is in a second wave shape, the wave crest of the second wave shape forms a third groove on the inner side of the outer layer, and forms a fourth protrusion on the outer side of the outer layer; the wave trough of the second wave shape forms a fourth groove on the outer side of the outer layer, and forms a third protrusion on the inner side of the outer layer;

[0017] The third groove is arranged opposite to the second groove to form a cavity unit; in the cavity unit, there is a gap between the filter layer and the inner layer, and there is a gap between the filter layer and the outer layer.

[0018] The concave and convex surfaces between the inner layer and the outer layer are inversely symmetrical, that is, the inner and outer layers are convex at the same time. During use, the filter layer in the cavity unit will not contact the outer layer or the inner layer, which is conducive to maintaining air circulation.

[0019] As a preferred solution of the present invention, the cross section of the filter layer is in a third wave shape; in each cavity unit, the filter layer protrudes toward the outer layer and there is a gap between the filter layer and the outer layer.

[0020] By raising the filter layer toward the outer layer, on the one hand, wrinkles are formed on the filter layer, thereby increasing the surface area of ​​the filter layer; on the other hand, when inhaling rapidly, the airflow presses the raised position of the filter layer, and the raised position of the filter layer can withstand greater airflow impact, which is beneficial to maintaining the interval between the filter layer and the inner layer.

[0021] The first wave shape, the second wave shape and the third wave shape are sine waves, cosine waves, square waves or a combination thereof.

[0022] As a preferred embodiment of the present invention, the mask body is provided with a nose clip. The nose clip is an elastic clip or a soft metal strip / sheet that can be shaped. Further, the soft metal strip / sheet is an aluminum wire / sheet, an iron wire / sheet or a copper wire / sheet.

[0023] As a preferred embodiment of the present invention, a cup-shaped cavity or a bowl-shaped cavity is formed on the inner side of the mask body.

[0024] Preferably, a corrugated inner layer, a corrugated outer layer and a corrugated filter layer are used to form a skeleton, thereby forming a cup-shaped cavity or a bowl-shaped cavity. When the user wears the mask, the mask, the nose and the mouth form a space, which makes breathing smoother and more comfortable.

[0025] As a preferred solution of the present invention, the first groove extends from the edge of the mask body to the middle of the mask body.

[0026] The arrangement of the first groove is conducive to maintaining the structure of the cup-shaped cavity during use of the mask.

[0027] As a preferred embodiment of the present invention, the first groove extends from the upper half of the mask body to the lower edge of the mask body. The upper and lower sides refer to the upper side being the upper side and the lower side being the lower side when in use.

[0028] The arrangement of the first groove facilitates the discharge of water vapor from the bottom edge of the mask from top to bottom.

[0029] As a preferred embodiment of the present invention, the mask body is provided with a headband and a neckband, or the mask body is provided with earbands.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] 1. The mask of the present invention forms a groove on the inner side of the inner layer so that water vapor can flow along the groove and be discharged outside the mask, thereby reducing the contact time between water vapor and the mask. In addition, a concave-convex structure is formed on the outer side of the inner layer to support the meltblown layer, thereby reducing the contact area between the inner layer and the meltblown layer and reducing the influence of water vapor on the meltblown layer.

[0032] 2. The mask of the present invention forms a skeleton structure by arranging the inner layer, outer layer and filter layer which are all wavy, thereby reducing the thickness of the inner layer and the outer layer, increasing the effective filter area of ​​the filter layer, and forming a cavity inside the mask, which is beneficial to air circulation.

[0033] 3. The mask of the present invention forms a cup-shaped cavity on the inner side of the mask body, and extends the first groove from the upper half of the mask body to the lower edge of the mask body. The first groove forms a smooth, nearly straight drainage channel, which is beneficial for water vapor to flow from the upper part of the mask to the lower edge of the mask and then be discharged outside the mask. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the mask of Example 1.

[0035] Figure 2 yes Figure 1 Schematic diagram of the left side view.

[0036] Figure 3 It is a partial schematic diagram of the cross-sectional structure of the mask of Example 1.

[0037] Figure 4 It is a schematic diagram of the mask structure of Example 2.

[0038] Figure 5 It is a partial schematic diagram of the cross-sectional structure of the mask of Example 2.

[0039] Figure 6 It is a partial schematic diagram of another cross-sectional structure of the mask of Example 2.

[0040] Figure 7 It is a structural schematic diagram of the mask of Example 3.

[0041] Figure 8 It is a schematic diagram of another structure of the mask of Example 3.

[0042] Icon: 100-mask body; 101-headband; 102-neckband; 103-nose clip; 104-earband; 1-inner layer; 11-first groove; 12-first protrusion; 2-filter layer; 21-second groove; 3-outer layer; 31-third groove; 41-fourth groove; 42-fourth protrusion; 51-filter layer protrusion. DETAILED DESCRIPTION

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] Example 1

[0046] A mask, such as Figure 1 and Figure 2 As shown, it includes a mask body 100, a headband 101, a neckband 102 and a nose clip 103; Figure 3 As shown, the mask body 100 includes an inner layer 1, a filter layer 2 and an outer layer 3 which are stacked together in sequence;

[0047] The inner layer 1 includes a first surface located on the inner side and a second surface located on the outer side; the first surface is provided with a first groove 11 and a first protrusion 12 at intervals; the second surface is provided with a second groove 21 and a second protrusion at intervals.

[0048] The inner layer 1 is a non-woven fabric layer. The filter layer 2 is a fabric layer composed of two layers of melt-blown fabric. The outer layer 3 is a non-woven fabric layer.

[0049] The first groove 11 corresponds to the second protrusion, and the first protrusion 12 corresponds to the second groove 21 .

[0050] That is, the thickness of the entire inner layer 1 is uniform, and the position where the first groove 11 is formed on the first surface of the inner side of the inner layer 1 is raised on the second surface to form a second groove. The position where the first groove 12 is formed on the first surface of the inner side of the inner layer 1 is sunken on the second surface to form a second groove 21. Through the above arrangement, the thickness of the inner layer 1 is reduced, which is conducive to air circulation. It is also conducive to processing and molding.

[0051] like Figure 5As shown, the cross section of the inner layer 1 is in a first wave shape, the trough of the first wave shape corresponds to the first protrusion 12 and the second groove 21; the crest of the first wave shape corresponds to the first groove 11 and the second protrusion. The filter layer 2 and the outer layer 3 are flat fabric surfaces.

[0052] The first wave shape includes two waveforms of different heights, and the two waveforms of different heights are arranged at intervals, which is conducive to forming a skeleton and maintaining the skeleton strength of the mask.

[0053] The nose clip copper sheet can also be made of softer metal sheets such as iron sheets and aluminum sheets according to actual conditions.

[0054] like Figure 1 , Figure 2 As shown, a cup-shaped cavity is formed inside the mask body 100. The first groove 11 extends from the edge of the mask body 100 to the middle of the mask body 100.

[0055] The real protective layer of the mask is the middle filter layer 2, i.e. the meltblown layer, which adsorbs bacterial particles on the outer surface of the meltblown layer through electrostatic adsorption characteristics, so that they will not enter the oral cavity or nasal cavity through the meltblown layer. If the meltblown layer encounters water, the bacteria enter the oral cavity through the water layer carrier, and the meltblown layer loses its filtering function. The mask in this solution can effectively prevent the meltblown layer from getting wet and prevent the meltblown layer from losing its filtering effect.

[0056] The outer layer 3 and the inner layer 1 make the main body of the mask a cup-shaped cavity. When the user wears it, the mask fits the face to form a space, and the nose and mouth keep breathing smoothly in the space, which is more comfortable. The edge of the mask is not provided with grooves or convex structures, and it remains flat, forming a good fit relationship with the face. The outer dimensions of the mask are designed with reference to ergonomics, and its size is suitable for most people's faces. After wearing it on the head with ear straps, the edge of the mask can fit the face well. At the same time, through the plasticity of the nose clip, the mask is completely fitted with the nose and both sides, and the tightness is good. It ensures low leakage rate, high filtering effect and better safety during the use of the mask.

[0057] Example 2

[0058] In this embodiment, the structure of the mask body 100 is improved on the basis of the first embodiment.

[0059] like Figure 5 As shown, the cross section of the outer layer 3 is in a second wave shape, the wave crest of the second wave shape forms a third groove 31 on the inner side of the outer layer 3, and forms a fourth protrusion 42 on the outer side of the outer layer 3; the wave trough of the second wave shape forms a fourth groove 41 on the outer side of the outer layer, and forms a third protrusion on the inner side of the outer layer;

[0060] The third groove 31 is arranged opposite to the second groove 21 to form a cavity unit; in the cavity unit, the filter layer 2 is a flat meltblown cloth layer, there is a gap between the filter layer 2 and the inner layer 1, and there is a gap between the filter layer 2 and the outer layer 3.

[0061] The concave and convex surfaces between the inner layer 1 and the outer layer 3 are inversely symmetrical, that is, both the inside and the outside are convex. During use, the filter layer 2 in the cavity unit will not contact the outer layer 3 or the inner layer 1, which is conducive to maintaining air circulation.

[0062] In a further solution, Figure 6 As shown, the cross section of the filter layer 2 is in a third wave shape; in each cavity unit, the filter layer 2 protrudes toward the outer layer 3 and there is a gap between the filter layer 2 and the outer layer 3 .

[0063] By raising the filter layer 2 toward the outer layer 3, on the one hand, folds are formed on the filter layer 2, thereby increasing the surface area of ​​the filter layer 2; on the other hand, when inhaling rapidly, the airflow presses the position of the filter layer protrusion 51, and the filter layer protrusion 51 can withstand a greater airflow impact, which is beneficial to maintaining the interval between the filter layer 2 and the inner layer 1.

[0064] The corrugated inner layer 1, the corrugated outer layer 2 and the corrugated filter layer 2 form a skeleton, and then form a cup-shaped cavity or a bowl-shaped cavity. When the user wears the mask, the mask, the nose and the mouth form a space, which makes breathing smoother and more comfortable.

[0065] Example 3

[0066] This embodiment limits the shape of the first groove 11 on the basis of Embodiment 1 or Embodiment 2.

[0067] like Figure 7 As shown, a plurality of first grooves 11 are provided inside the mask body 100, and some of the first grooves 11 extend from the upper half of the mask body 100 to the lower edge of the mask body 100, which facilitates the discharge of water vapor from the lower edge of the mask from top to bottom.

[0068] like Figure 8 As shown, another arrangement is that the first grooves 11 and the first protrusions 12 are arranged in a manner that a plurality of first protrusions 12 are arranged on the flat cloth surface, and other positions of the cloth surface are first grooves 11, and the first grooves 11 are connected as a whole, which is more conducive to the collection and discharge of water vapor. The mask is worn in an ear-hook manner, that is, ear straps 104 are respectively arranged on both sides of the mask.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mask, comprising a mask body (100), characterized in that: The mask body (100) comprises an inner layer (1), a filter layer (2) and an outer layer (3) which are stacked in sequence; The inner layer (1) comprises a first surface located on the inner side and a second surface located on the outer side; the first surface is provided with a first groove (11) and a first protrusion (12) at intervals; the second surface is provided with a second groove (21) and a second protrusion at intervals; The first groove (11) corresponds to the second protrusion, and the first protrusion (12) corresponds to the second groove (21); The cross section of the inner layer (1) is in a first wave shape, the trough of the first wave shape corresponds to the first protrusion (12) and the second groove (21); the peak of the first wave shape corresponds to the first groove (11) and the second protrusion; The first wave shape includes two waveforms of different heights, and the two waveforms of different heights are arranged at an interval; The cross section of the outer layer (3) is in a second wave shape, and the wave crest of the second wave shape forms a third groove (31) on the inner side of the outer layer (3); The concave and convex surfaces between the inner layer (1) and the outer layer (3) are inversely symmetrical; The third groove (31) and the second groove (21) are arranged opposite to each other to form a cavity unit; in the cavity unit, there is a gap between the filter layer (2) and the inner layer (1), and there is a gap between the filter layer (2) and the outer layer (3).

2. The mask according to claim 1, characterized in that The cross section of the filter layer (2) is in a third wave shape; in each cavity unit, the filter layer (2) bulges toward the outer layer (3).

3. The mask according to any one of claims 1-2, characterized in that: The mask body (100) is provided with a nose clip (103).

4. The mask according to any one of claims 1-2, characterized in that: A cup-shaped cavity or a bowl-shaped cavity is formed inside the mask body (100).

5. The mask according to claim 4, characterized in that: The first groove (11) extends from the edge of the mask body (100) toward the middle of the mask body (100).

6. The mask according to claim 4, characterized in that: The first groove (11) extends from the upper half of the mask body (100) to the lower edge of the mask body (100).

7. The mask according to any one of claims 1-2, characterized in that: The mask body (100) is provided with a headband (101) and a neckband (102), or the mask body (100) is provided with earbands (104).

Images