WO2022083500A1

WO2022083500A1 - Nose-fitting partitioned mask

Info

Publication number: WO2022083500A1
Application number: PCT/CN2021/123889
Authority: WO
Inventors: 邱萍; 何富伟
Original assignee: 邱萍
Priority date: 2020-10-22
Filing date: 2021-10-14
Publication date: 2022-04-28
Also published as: CN113812700A

Abstract

A nose-fitting partitioned mask, comprising a mask body (1); the mask body (1) comprises an outer bacteriostatic layer (11) and a filter layer (12) which are stacked from outside to inside; a nose breathing mechanism is provided on the mask body (1); the nose breathing mechanism comprises nose breathing ventilation heads (2) and a barrier layer (14); the barrier layer (14) is located on the side of the filter layer (12) facing the human face; the mask body (1) comprises a first protective filter region (1-1) formed by being enclosed by the edge of the barrier layer (14) and covered by the barrier layer (14), and a second protective region (1-2) separated from the barrier layer; the edge of the barrier layer is connected to the filter layer (12) of the first protective filter region (1-1) in a sealed manner, and a ventilation gap in　communication with the nose ventilation heads (2) is formed between the filter layer (12) and the barrier layer (14), so that said mask is more comfortable in wearing and has a better protective effect.　

Description

Nose type partition mask

technical field

The present invention relates to sanitary protection articles, specifically masks.

Background technique

Masks are sanitary products that can be widely used in daily life protection, or in some occasions requiring protection, such as the health protection of fire rescue personnel, fire cause investigators, fire supervision, publicity and training personnel, medical staff, military and police personnel, etc.; masks Generally, it is worn on the mouth and nose to filter the air entering the mouth and nose to achieve the effect of blocking harmful gases, odors, droplets, viruses and other substances. Masks have a certain filtering effect on the air entering the lungs. Wearing masks has a very good effect when working in a polluted environment such as dust when respiratory infectious diseases are prevalent. The existing commonly used masks include the mask body and the hanging ear elastic rope. The mask body is a multi-layer structure, including an outer layer, a filter layer and an inner layer, and the outer layer is a special antibacterial layer (non-woven fabric or ultra-thin polypropylene meltblown). material layer), the inner layer is a skin-friendly material (ordinary sanitary gauze or non-woven fabric), and the filter layer is an isolation filter layer (superfine polypropylene fiber meltblown material layer). Occasionally there is a need for oral speech; the traditional structure of the mask is a three-layer structure, and the protective effect of the mask is greatly affected by the fit between the edge of the mask and the human face, and there is a defect of insufficient sealing effect.

In order to improve the above-mentioned technical problems, there is also a corresponding improvement attempt to the mask, as disclosed in the patent document with the Chinese application number CN201420295341.1, "the mask with good dust-proof effect", which adopts a breathing buffer layer, a barrier layer, two funnels The edge of the filter belt layer is fixedly connected with the edge of the barrier layer, the breathing buffer layer is arranged between the filter belt layer and the barrier layer, and two funnel-shaped conduits pass through the barrier layer and are fixed on it. The distance between the two is the same as the distance between the two nostrils of a person. It relies on two funnel-shaped catheters to enter the nose and cooperates with the barrier layer to exchange the gas generated by nose breathing in the arc-shaped buffer layer, and rely on the barrier layer to form a breathing buffer. It can solve the problem that the filtering effect of nasal respiratory protection is greatly affected by the fit between the edge of the mask and the human face. However, the entire inside of the mask is covered by a barrier layer, ignoring the needs of oral protection and comfort; in the process of wearing the mask, there are inevitably mouth exhalation and nasal leakage. These two parts of gas are isolated by the barrier layer and only It can be discharged from the edge of the mask; this is not conducive to the balance between the comfort and protection of the mask, that is, in order to ensure that the exhaled gas from the mouth is discharged, the fit of the edge of the mask to the human body should not be too high, resulting in no protection at the mouth; if the mouth is guaranteed For protection, the exhaled gas from the mouth is more likely to stay in the mask, and it is more difficult to discharge, causing facial discomfort; therefore, the mask is stuffy, which affects the comfort and durability of wearing; a large amount of retained gas is discharged through the body fit. For people who wear glasses, it is easy to cause fogging of glasses.

Therefore, whether it is a traditional mask or the above-mentioned mask with a barrier layer, the fit between the edge of the mask and the human face has a greater impact on the overall protective effect of the mask, and there is a defect that the overall protective effect of the mask is insufficient. Moreover, the above-mentioned mask with barrier layer may even reduce the comfort of wearing the mask.

SUMMARY OF THE INVENTION

Objectives of the present invention: In order to overcome the defects of the prior art, the present invention provides a nose-sticking partition mask that adopts a partitioned filter protection design, which better adapts to the usage of the mouth and nose when wearing, and has the advantages of more comfortable wearing and overall protection. The advantage of better sex.

For achieving the above object, the present invention provides the following technical solutions:

A nose-sticking type partition mask includes a mask body, the mask body includes an outer bacteriostatic layer and a filter layer stacked from outside to inside, a nose breathing mechanism is provided on the mask body, and the nose breathing mechanism includes a nose breathing device for nasal breathing and ventilation. A ventilating head and a barrier layer are provided, and the barrier layer is located on the side of the filter layer facing the human face. It is characterized in that: the mask body includes a first protective filter area surrounded by the edge of the barrier layer and covered by the barrier layer, and a staggered barrier layer. In the second protection area, the edge of the barrier layer is sealed and connected to the filter layer of the first protection area, and a ventilation gap connecting the nasal ventilation head is formed between the filter layer and the barrier layer.

By adopting the above technical solution, a first protective filter area is formed on the mask body, and at the same time, a second protective area with a staggered barrier layer is provided on the mask body, that is, the barrier layer does not completely cover the entire mask, thereby realizing a double protection area design on the mask , For the main respiratory protection nose, the mask body adopts the first protection filter area design, and mouth breathing mainly relies on the second protection area; in actual use, breathing is mainly completed through the nose, and the nose ventilation head and the nose are attached The degree of fit can be adjusted and controlled as needed, that is, as long as the nose ventilation head is in contact with the nostrils, the comfort of wearing is ensured. The ventilation is mainly carried out in the ventilation gap, and the protective effect formed by the ventilation gap is guaranteed by the sealing connection between the barrier layer and the filter layer, which has a good protection guarantee. There is a certain amount of air leakage, and a small amount of gas leaking from the nose enters the second protection zone, and is filtered and protected by the second protection zone; at the same time, mouth breathing is mainly filtered and protected through the second protection zone; thus forming a multi-dimensional three-dimensional protection. In addition, the exhaust gas formed by the main breathing (nose breathing) will not enter the human face in large quantities through the barrier layer, and the exhaust gas on the human face can be discharged through the second protection area, thereby improving the overall comfort and protection of the mask, greatly weakening the The importance of the influence of the fit between the edge of the mask and the human face on the protective performance of the mask. The nose-sticking partition mask of the invention can better take into account the comfort and protection requirements, not only improves the filtering protection effect, but also has better wearing comfort and prolongs the wearing time of the mask, thereby further improving the protective effect of the mask on people.

Preferably, the area of the barrier layer is smaller than the area of the filter layer covered by the barrier layer, so that the barrier layer is raised on the filter layer after the mask body is worn. Under this structural design, the area of the barrier layer is smaller than the area of the covered filter layer, so that after the mask is worn and the filter layer is unfolded, a bulge can be formed between the barrier layer and the filter layer, so that there is more space between the barrier layer and the filter layer. The large ventilation gap facilitates the exchange of gas, and the breathing is smoother and more comfortable when the mask is worn.

Preferably, the barrier layer is located in the middle of the mask body, and the second protection zone on the mask body surrounds the first protection filter zone. With this structural design, the gas entering the second protective filter zone can be better discharged.

Preferably, the nasal ventilation head includes a nasal ventilation tube integrally formed with the barrier layer. Under the structure design, the processing is convenient.

Preferably, the barrier layer is a protruding shape toward the filter layer, the barrier layer is formed with a plurality of bumps on the side facing the filter layer, and the filter layer is supported by the bumps to form the ventilation gap. Under the structure design, the wearing is more comfortable, and the ventilation gap can be formed more reliably.

Preferably, the end of the nose ventilating head that matches the nose of the human body is a nose sticking end close to the nostrils, the nose sticking end is made of flexible rubber, and the nose sticking end has a thin, elastically deformable nose alar piece.

Preferably, the end of the nose ventilating head that cooperates with the nose of the human body is a nose sticking end close to the nostril, the nose sticking end is made of flexible rubber, and the nose sticking end is integrally formed with a ring of annular ribs that fit with the nostrils of the human body. , the outer surface of the annular rib is arc-shaped.

The present invention will be further described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the structure schematic diagram of the nose sticking type partition mask of the specific embodiment of the present invention;

Fig. 2 is the longitudinal cross-sectional structural schematic diagram of the nose sticking type partition mask of the specific embodiment of the present invention;

Fig. 3 is the structural schematic diagram of the nose ventilating head of the specific embodiment of the present invention using the design of the nose alar piece;

FIG. 4 is a schematic structural diagram of a barrier layer according to a specific embodiment of the present invention.

Detailed ways

Referring to accompanying drawings 1 to 4, a nose-sticking type partition mask disclosed by the present invention includes a mask body 1, and the mask body 1 is connected with a fixing member 3 for fixing the mask on the human face, such as hanging ears, the mask body 1 It includes an outer antibacterial layer 11 and a filter layer 12 stacked from outside to inside, so as to make wearing comfortable. Usually the mask also includes an inner layer 13, the inner layer 13 is on the side of the filter layer 12 facing the human face, the mask body 1 is provided with a nasal breathing mechanism, and the nasal breathing mechanism includes a nasal ventilation head 2 for nasal breathing and ventilation, and The barrier layer 14, the barrier layer 14 is located on the side of the filter layer 12 facing the face of the human body, the nose ventilation head 2 is at least the part that fits with the nostrils of the human body is made of flexible rubber, and the mask body 1 includes the barrier layer 14. The first protective filter area 1-1 formed and covered by the barrier layer 14, and the second protective area 1-2 staggered from the barrier layer 14, that is, there is still between the edge of the mask and the body seal and the edge of the barrier layer 14. A filter area for exhaled air from the mouth, the entire mask protection area formed by the sealing edge of the mask and the human body has two interrelated protection zones, and the edge of the barrier layer 14 is sealed and connected to the filter layer 12. Here It should be pointed out that the connection includes that the barrier layer 14 is directly fixed on the filter layer 12 to realize two sealed connections, or when the mask has an inner layer design, the barrier layer 14 is located on the inner layer 13, that is, the barrier layer 14 and the filter layer. There can also be other layers in between, and the outer antibacterial layer 11, the filter layer 12 and the inner layer 13 can be welded together by ultrasonic directly at the edge of the barrier layer 14 to achieve the sealing connection between the barrier layer 14 and the filter layer. , the process may be easier to achieve; of course, a structure design in which the barrier layer is located between the filter layer 12 and the inner layer 13 can also be designed. The edge of the barrier layer 14 is sealed and connected to the filter layer 12. For example, an ultrasonic welding process is used. The edge of the barrier layer 14 is surrounded by the first protective filter area 1-1 covered by the barrier layer 14. The barrier layer 14 and the filter layer 12 There is a ventilation gap 15 therebetween, the nasal ventilation head 2 is fixed on the barrier layer 14 , and the nasal ventilation head 2 leads to the ventilation gap 15 . The edge of the barrier layer is sealed and connected to the filter layer, thereby forming a first protective filter area on the mask body, and at the same time, there is a second protection area on the mask body that staggers the barrier layer, that is, the barrier layer does not completely cover the entire mask, so that the mask body is not completely covered. In the process of using the mask, breathing is mainly completed through the nose, and the fit between the nose ventilation head and the nose can be adjusted and controlled as needed, that is, as long as the nose ventilation head and the nostrils are in contact, Yes, to ensure the comfort of wearing. During the use of the mask, the nasal ventilation head is placed at the nostrils of the human body. The nasal breathing and ventilation are mainly carried out in the ventilation gap. The sealing connection between the barrier layer and the filter layer ensures ventilation. The protective effect formed by the gap has a good protection guarantee. In order to take into account the comfort between the nose ventilation head and the nose, a certain amount of air leakage is allowed, and a small amount of gas leaking from the nose enters the second protection zone. The second protection zone realizes filtering protection; at the same time, mouth breathing is mainly filtered and protected through the second protection zone; thus forming a multi-dimensional three-dimensional protection. In addition, the exhaust gas formed by the main breathing (nose breathing) will not enter the human face in large quantities through the barrier layer, and the exhaust gas on the human face can be discharged through the second protection area, thereby improving the overall comfort and protection of the mask, greatly weakening the The importance of the influence of the fit between the edge of the mask and the human face on the protective performance of the mask. The nose-sticking partition mask of the invention can better take into account the comfort and protection requirements, not only improves the filtering protection effect, but also has better wearing comfort and prolongs the wearing time of the mask, thereby further improving the protective effect of the mask on people. Without considering the filterability of the mask material, the nose-mounted partition mask expands the adjustment of the protection and comfort of traditional masks from only one dimension of the sealing of the edge of the mask to the sealing of the edge of the mask, nasal ventilation ratio, nasal In the three dimensions of air tightness of the vent, it greatly eliminates the influence of facial heterosexuality on the sealing performance of the mask. In different application scenarios, by appropriately changing the configuration of the three dimensions of the mask, the user's requirements for the protection and comfort of the mask can be better met.

The area of the barrier layer 14 is smaller than the area of the filter layer 12 covered by the barrier layer 14 , so that the barrier layer 14 is raised on the middle filter layer 12 after the mask body 1 is worn. The area of the barrier layer is smaller than the area of the covered filter layer, so that after the mask is worn and the filter layer is unfolded, a bulge can be formed between the barrier layer and the filter layer, so that there is a larger ventilation gap between the barrier layer and the filter layer , to facilitate the exchange of gas, and to breathe more smoothly and comfortably when wearing the mask.

The barrier layer 14 is located in the middle of the mask body 1, and the second protection zone 1-2 on the mask body 1 surrounds the first protection filter zone 1-1. The gas entering the second protective filter area can be discharged better, and the mask can be easily fitted to the face of the human body.

In order to facilitate processing and molding, the nasal ventilation head includes a nasal ventilation tube 22 integrally formed with the barrier layer 14, and the end of the nasal ventilation tube 22 is installed with a structure that fits the nose of the human body more comfortably, that is, the nose is attached. End 21 structure. The barrier layer 14 is convex toward the filter layer. The barrier layer 14 is formed with a plurality of bumps 141 toward the filter layer 12. The filter layer 12 is supported by the bumps 141 to form the ventilation gap. The material of the barrier layer 14 can be selected according to needs, preferably soft rubber, such as a silicone sheet, so as to facilitate the integral molding of the nasal ventilation tube 22, of course, a plastic sheet, film, etc. can also be used.

As shown in FIG. 3 , in this specific embodiment, the end of the nose ventilating head 2 that is matched with the nose of the human body is the nose sticking end 21 close to the nostrils, the nose sticking end 21 is made of flexible rubber, and the nose sticking end 21 is made of flexible rubber. 21 is placed at the front edge of the nostrils of the human body, and is more comfortable to wear. The nose ala piece is deformed when entering the nostril to achieve a good sealing and fixing effect, and the thin and elastically deformable nose ala piece design has better softness and comfort.

As another feasible structure of the present invention, the nose sticking end 21 is integrally formed with a ring of annular rib 212 that fits with the nostril of the human body, and the outer surface of the annular rib 212 is arc-shaped. Positioning and sealing are achieved by using raised ribs, and the structure is simple.

The protective performance created by the present invention is described as follows: the air tightness of the traditional mask depends on the degree of fit between the mask and the face, but in fact we are in contact with the air through the mouth and nose. Decomposing these two areas, then in fact, the protection of the mask = the ventilation ratio of the nasal area * the air tightness of the nasal ventilation holes * the filterability of the material + [the ventilation ratio of the mouth area + the ventilation ratio of the nasal area * (1‐ the air permeability of the mask Tightness)] * air tightness of the mask * filterability of the material.

The core principle of the mask with the partition design of the present invention is secondary protection. The first time is the protection of the nose of the key parts, and the first protection filter area is used; the second protection area of the staggered barrier layer is equivalent to the protection of the nose. Secondary protection of air leakage and mouth breathing gas. If we do not consider the influence of the filterability of the material, then under the old mask structure: the protection of the mask = the airtightness of the mask

For the divisional mask: the protection of the mask = the ventilation ratio of the nasal area * the airtightness of the nasal ventilation hole + [the ventilation ratio of the mouth area + the ventilation ratio of the nasal area * (1- the airtightness of the nasal ventilation hole)] * the airtightness of the mask Air tightness.

Might as well set the protection of the mask as f, the ventilation ratio of the nasal area as x (so the ventilation ratio of the mouth area is 1-x), the air tightness of the nasal ventilation holes as y, and the air tightness of the mask as z, then the original structure of the mask The protection is: f ₁ =z

The protective property f ₂ of the new structure mask, f ₂ =xy+[(1-x)+x(1-y)]z=xy+(1-xy)z

In fact, the original mask is a special case when the air tightness (y) of the nose vent is zero.

To give a simple example, the air tightness of the non-partitioned structure mask is 80%. If the nasal ventilation ratio is 80% and the air tightness of the nasal ventilation holes is also 80%, then the protection of the new structure mask is = 0.8* 0.8+[1‐0.8*0.8]*0.8=0.928

The relationship between the protective power of the mask of the new structure and each factor is as follows:

The effect of changing the nasal breathing ratio is:

The effects of changing the air tightness of the nasal vent are:

This shows that under the new structure, increasing the proportion of nasal breathing and the air tightness of nasal breathing have the same meaning, while the original structure can only change the air tightness of the mask, and the partition structure is equivalent to two more means, the air tightness of the mask The higher the tightness, the lower the significance of improving the nasal breathing ratio and the air tightness of the nasal vent;

The effect of changing the air tightness of the mask is:

The original structure is

This shows that the significance of improving the airtightness of the entire mask under the new structure decreases sharply with the increase in the proportion of nasal breathing and the increase in the airtightness of the nasal ventilation holes.

Therefore, if the new structure mask is to further improve the protection, it should be balanced. From the perspective of comfort, the difficulty of improving these three indicators is different. It is the most difficult to improve the air tightness of the overall mask, and the human body is the most uncomfortable. The air tightness of the nose is next, and the breathing ratio of the nose is the easiest. , Breathe less with your mouth.

In actual use, we should also consider the application scenarios. In public places or areas with high air pollution, we often seldom speak, but in fact these two areas are also the areas we focus on. When we do not speak in important areas, and the ventilation ratio of the nasal area is close to 1, then when we use partition masks in these areas, the protective properties of the new structure mask f ₃ , f ₃ =xy+[(1-x)+x( 1-y)]z=y+(1-y)z

In the same example just now, assuming that the airtightness of the non-partitioned structure mask is 80%, the nose ventilation ratio is changed to 100%, and the airtightness of the nasal ventilation holes is also 80%, then the protection of the new structure mask is = 0.8 +[1‐0.8]*0.8=0.96, the protective performance of the mask is greatly improved.

Claims

A nose-sticking type partition mask includes a mask body, the mask body includes an outer bacteriostatic layer and a filter layer stacked from outside to inside, a nose breathing mechanism is provided on the mask body, and the nose breathing mechanism includes a nose breathing device for nasal breathing and ventilation. A ventilating head and a barrier layer are provided, and the barrier layer is located on the side of the filter layer facing the human face. It is characterized in that: the mask body includes a first protective filter area surrounded by the edge of the barrier layer and covered by the barrier layer, and a staggered barrier layer. In the second protection area, the edge of the barrier layer is sealed and connected to the filter layer of the first protection area, and a ventilation gap connecting the nasal ventilation head is formed between the filter layer and the barrier layer.
The nose-sticking partition mask according to claim 1, wherein the first protection filter area is located in the middle of the mask body, and the second protection area on the mask body surrounds the first protection filter area.
The nose-sticking type partition mask according to claim 2, wherein the nose ventilation head comprises a nasal ventilation tube integrally formed with the barrier layer.
The nose-sticking type partition mask according to claim 3, characterized in that: the barrier layer is an arch that protrudes toward the filter layer, the barrier layer is formed with a plurality of bumps toward the side of the filter layer, and the filter layer is formed by being supported by the bumps. the ventilation gap.
The nose-sticking partition mask according to claim 1, wherein the area of the barrier layer is smaller than the area covered by the filter layer by the barrier layer, so that the mask body is made to bulge on the filter layer after wearing.
The nose sticking type partition mask according to claim 1 is characterized in that: the end of the nose ventilating head that cooperates with the nose of the human body is a nose sticking end close to the nostrils, the nose sticking end is made of flexible rubber, and the nose sticking end has A ring of thin, elastically deformable nose flaps.
The nose-sticking type partition mask according to claim 1, wherein the end of the nose ventilating head that cooperates with the nose of the human body is a nose-sticking end close to the nostril, and the nose-sticking end is made of flexible rubber, and the nose-sticking end is integrated A ring-shaped convex rib is formed to fit with the nostrils of the human body, and the outer surface of the annular convex rib is arc-shaped.