WO2020248148A1

WO2020248148A1 - Protective mask for haze and fabricating method therefor

Info

Publication number: WO2020248148A1
Application number: PCT/CN2019/090834
Authority: WO
Inventors: 葛北羽
Original assignee: 葛北羽
Priority date: 2019-06-11
Filing date: 2019-06-12
Publication date: 2020-12-17
Also published as: CN110179190B; CN110179190A

Abstract

A protective mask for haze and a fabricating method therefor. The protective mask for haze comprises a mask body and earloops (13). The mask body comprises a primary mask body (1) and a secondary mask body (2). The secondary mask body (2) is connected to the primary mask body (1). The secondary mask body (2) comprises a breathing piece (3) located at a position in front of the mouth and nose tip; the breathing piece (3) is also disposed on the primary mask body (1), and the breathing piece (3) is provided with a breathing valve (4). The mask body is divided into a breathing cavity (15) and haze preventing cavities (14). Both the primary mask body (1) and the secondary mask body (2) have filter layers. Also disclosed is a fabricating method for a protective mask for haze provided with fitting mechanisms on the edges of a primary mask body (1) and a secondary mask body (2), comprising the following steps: S1, production of the primary mask body (1); S2, production of the secondary mask body (2); S3, installation of the fitting mechanism; S4, connection of the primary mask body (1) and the secondary mask body (2). The mask body of the present mask can closely fit the face, so as to prevent the haze from being sucked into the human body due to seal leakage of the mask body. The present mask is suitable for people such as students, the elderly, outdoor workers, and pregnant women to prevent the human body from being harmed by atmospheric haze pollution.

Description

Anti-fog mask and manufacturing method thereof

Technical field

The invention belongs to the technical field of daily necessities, in particular to an anti-smog mask and a manufacturing method thereof.

Background technique

Smog is a combination of fog and haze. Smog is common in cities. Many areas in China combine fog and haze together as a disaster weather phenomenon for early warning and forecasting, collectively referred to as "smoggy weather." In autumn, winter and spring, haze weather is the norm in some areas of our country, especially in the north, especially in Hebei province. As the haze weather contains a large number of harmful pollutants, which seriously threaten human health, especially affecting the healthy growth of students, it is particularly urgent to eliminate the harm of atmospheric haze pollution to humans. Wearing a mask is an effective, convenient and economical way to prevent smog pollution.

Currently, there are many anti-smog masks on the market, but most of the masks have poor ability to filter smog pollutants. This is because the face is uneven, and the mask often cannot fit the face completely. Even if the mask is worn, air leakage will occur due to the inadequate fit between the mask and the face, and the smog can easily enter the mask and be affected by the body. Inhaled, the anti-smog effect is poor.

technical problem

In order to solve the above shortcomings in the prior art, the present invention aims to provide an anti-smog mask and a manufacturing method thereof, so as to achieve close contact between the mask and the face and prevent the inhalation of smog gas due to air leakage The purpose of the human body.

Technical solutions

In order to achieve the above-mentioned purpose, the technical solutions adopted by the present invention are as follows: an anti-fog mask, a cover body and a lanyard connected to the cover body, the cover body includes a main cover body covering the cheeks, mouth and nose, and the main cover The auxiliary mask body of the mouth and nose in the body, the auxiliary mask body is connected with the main mask body, the auxiliary mask body has a breathing piece covering the front of the mouth and the nose, the breathing piece is also placed on the main mask body, and the breathing piece is provided with a breathing valve , The cover is divided into a breathing room placed in the auxiliary cover and an anti-fog room between the main cover and the auxiliary cover; both the main cover and the auxiliary cover have a filter layer that can filter PM2.5, the main cover The edges of the body and the auxiliary cover are provided with a fitting mechanism for making the cover fit the face.

As a limitation of the present invention, the fitting mechanism includes a barrier protruding toward the face along the edges of the main cover body and the auxiliary cover body.

As another limitation of the present invention, the fitting mechanism includes a welt that is connected to the edges of the main cover body and the auxiliary cover body and extends to the outside of the cover body, between the welt and the main cover body and between the welt and the auxiliary cover body. The included angle is an obtuse angle.

As a further limitation of the present invention, the welt is connected with a crimp that is in contact with the face, a spring is fixed between the welt and the crimp, and the welt is connected with the lanyard of the main cover body, and the lanyard drives the welt compression spring to press Stick it on the face.

As a further limitation of the present invention, springs are fixed on the nose bridge, cheeks, and chin on the welt of the main cover body, and the springs on the welt of the secondary cover body are arranged equidistantly; each spring is placed in a spring pocket, and the spring pocket is bonded On the welt and hold down.

As the third limitation of the present invention, the auxiliary mask body is provided with a fixing mechanism for fixing the auxiliary mask body to the tip of the mouth and nose, and the fixing mechanism is any one or any of the following forms:

A. The fixing mechanism includes a pair of nose pads fixed on the auxiliary mask body, and the nose pads are placed on the nose wings;

B. The fixing mechanism includes a support frame that is fixed on the auxiliary cover and can support the auxiliary cover;

C. The fixing mechanism includes a draw rope connected with the auxiliary cover body, the draw rope is tied to the lanyard, while the lanyard is hung, the lanyard drives the draw rope to cover the auxiliary cover body on the mouth and nose tip.

As another limitation of the present invention, the baffle is made of silica gel, and the distance between the edge of the main cover and the edge of the auxiliary cover is 4-7 cm.

The present invention also provides a method for manufacturing the anti-smog mask for making the above-mentioned anti-smog mask, and its technical scheme is as follows: The manufacturing method of the anti-smog mask includes the following steps:

S1. Production of the main cover

The non-woven fabric, activated carbon filter layer, nano silver coating net, electrostatic filter cotton, and non-woven fabric are thermally bonded to form the filter layer, and then cut into the main cover, and the lanyard is bonded or stitched On the main cover, install a breathing valve on the breathing plate;

S2. Production of auxiliary cover

Cut the filter layer, leaving a hole in the middle that matches the breathing film on the main cover;

S3. Installation and fitting mechanism

Sewing or bonding mechanism at the edges of the main cover and the auxiliary cover;

S4. Connect the main cover and the auxiliary cover

The auxiliary cover is glued to the edge of the breathing piece of the main cover, so that the cover is divided into a breathing chamber placed in the auxiliary cover and an anti-fog chamber placed between the main cover and the auxiliary cover.

As a limitation of the present invention, S3. Installation and fitting mechanism

Sewing or bonding the bonding mechanism at the edges of the main cover body and the auxiliary cover body, the bonding mechanism adopts any one or any of the following forms:

S31. Sewing or bonding the silicone-based bars protruding to the face at the edges of the main cover and the auxiliary cover;

S32. The edges of the main cover body and the auxiliary cover body are integrally connected with a welt extending to the outside of the cover body. The angle between the welt and the main cover body and between the welt and the auxiliary cover body is an obtuse angle;

S33. The edges of the main cover body and the auxiliary cover body are integrally connected with a welt extending to the outside of the cover. The angle between the welt and the main cover and between the welt and the auxiliary cover is an obtuse angle; Bonded or sewn with a crimp in contact with the face, a spring pocket is bonded between the welt and the crimp, and a spring is built in the spring pocket; the lanyard of the main cover body is sewn or bonded to the welt, the lanyard Drive the welt compression spring to make the welt stick to the face.

As another limitation of the present invention, S2. Production of auxiliary cover

A fixing mechanism is installed on the auxiliary cover to fix the auxiliary cover to the tip of the mouth and nose. The fixing mechanism adopts any one or any of the following forms:

S21. A pair of nose pads that can be stuck on the alar of the nose when glued to the auxiliary mask body;

S22. The support frame that can be adhered to the auxiliary cover to support the auxiliary cover;

S23. The drawstring glued or sewn on the auxiliary cover body, the drawstring is tied to the lanyard, while the lanyard is hung, the lanyard drives the drawstring to cover the auxiliary cover on the mouth and nose.

Beneficial effect

Due to the adoption of the above-mentioned technical solutions, compared with the prior art, the present invention has the following beneficial effects:

(1) The present invention adopts a double-layer filtering structure of the main cover body and the auxiliary cover body. Even if the haze gas enters the main cover body, the auxiliary cover body can also block the haze gas and play a dual protection function.

(2) By providing a fitting mechanism, the present invention can make the edge of the cover fit closely to the human face, avoiding the situation that the haze enters the cover and is absorbed by the human body due to the gap between the face and the cover occur.

(3) The fitting mechanism of the present invention adopts the form of barrier strips, which can preliminarily block the gas from entering the cover; combined with the welt provided on the cover, the welt can be fitted to the face and further prevent the gas from entering the cover; It further blocks the gas, and uses the elastic action of the spring to press the pressing edge onto the face.

(4) The fixing mechanism provided in the present invention can ensure that the auxiliary mask body is stably covered at the mouth and the tip of the nose; when the fixing mechanism adopts a nose pad, the auxiliary mask body can be clamped on the nose wing to prevent the auxiliary mask body from falling and leaving The tip of the nose can limit the position of the auxiliary cover; when the fixing mechanism adopts a supporting frame, it can support and shape the auxiliary cover, so that the auxiliary cover has a certain accommodation space, ensuring smooth breathing, good ventilation, and good ventilation effect ; When the fixing mechanism adopts a lanyard connected with the drawstring, the lanyard can pull the drawstring while the lanyard is hung, and the secondary cover is pulled by the drawstring to cover the mouth and nose tip.

(5) The manufacturing process of the present invention is simple, easy to manufacture and produce, and the market demand is great.

In summary, the present invention is comfortable to use, has strong practicability, can be used by people with different facial shapes, and has wide applicability.

The invention is suitable for use by students, elderly people, outdoor workers, pregnant women and other groups, and is used to prevent the human body from being harmed by atmospheric haze pollution.

Description of the drawings

The present invention will be described in further detail below in conjunction with the drawings and specific embodiments.

Figure 1 is a cross-sectional view of the structure of Embodiment 1 of the present invention;

2 is a schematic diagram of the main cover structure of the embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of the structure of the sub-cover body of Embodiment 1 of the present invention.

In the figure: 1. Main cover body; 2. Sub cover body; 3. Breathing piece; 4. Breathing valve; 5. Stop strip; 6. Welt; 7. Press edge; 8. Spring; 9. Spring bag; 10. , Nose pads; 11. Support frame; 12. Pull rope; 13. Lanyard; 14. Anti-fog room; 15. Breathing room.

Embodiments of the invention

Example 1 An anti-fog mask

In this embodiment, the double-layer filtering structure of the main cover body 1 and the auxiliary cover body 2 is combined with a fitting mechanism that makes the cover body fit on the face, which can effectively avoid the absorption of haze gas by the human body. As shown in Figures 1 to 3, this embodiment includes a cover, a fitting mechanism and a fixing mechanism.

One, the cover

The cover includes a main cover 1 and a sub cover 2. The main cover body 1 is covered on the cheeks, the mouth and the nose by a lanyard 13. The auxiliary cover 2 is used to cover the mouth and nose, and play a dual role in preventing air leakage.

Both the main cover body 1 and the sub cover body 2 are made of a filter layer capable of filtering PM2.5. The filter layer can adopt the filtering structure used to filter PM2.5 in the prior art. The filter layers in this embodiment are sequentially stacked Non-woven fabric, activated carbon filter layer, nano-silver coating net, electrostatic filter cotton, non-woven fabric are thermally bonded.

The area where the main mask body 1 covers the mouth and nose is the breathing piece 3. The breathing piece 3 is the area on the filter layer of the main mask body. A breathing valve 4 is installed on the breathing piece 3. The breathing valve 4 is applied in the prior art. One-way exhaust valve on the mask. The breathing sheet 3 on the main mask body 1 is also placed on the auxiliary mask body 2. Refer to Figure 1. The junction between the auxiliary mask body 2 and the main mask body 1 is located at the edge of the breathing sheet 3, that is, the main mask body The filter layers of the body 1 and the auxiliary cover body 2 intersect on the breathing piece 3, and the two share the area of the breathing piece 3. The distance difference between the edge of the main cover body 1 and the edge of the auxiliary cover body 2 is S, S=4～7cm, as shown in Figure 1. In this way, the cover body is divided into a breathing chamber 15 placed in the auxiliary cover body 2 and an anti-fog chamber 14 placed between the main cover body 1 and the auxiliary cover body 2. Referring to Figure 1, the cover body is divided from top to bottom. Anti-fog room 14, breathing room 15, and anti-fog room 14.

Referring to FIG. 2, the left and right sides of the main cover 1 are connected with lanyards 13 for hanging on the ears or the head. A fitting mechanism is provided on the edges of the main cover body 1 and the auxiliary cover body 2.

2. Fitting organization

The fitting mechanism is used to make the edges of the main cover body 1 and the auxiliary cover body 2 closely fit the human face to prevent the smog gas from entering the cover body through the gap between the human face and the cover body and being sucked into the human body. The fitting mechanism adopts any one of the following forms or any two forms or any three forms:

(1) Bar 5

The fitting mechanism includes a baffle 5 protruding toward the face provided along the edge of the main cover body 1 and a baffle 5 protruding toward the face provided along the edge of the auxiliary cover body 2. When the main cover body 1 and the auxiliary cover body 2 When covering the human face, the barrier 5 can contact the human face, thereby blocking the haze gas outside the cover. The barrier 5 is made of a material that is easy to fit with the face, such as silicone.

(2) Welt 6

The fitting mechanism includes a welt 6 connected to the edge of the main cover body 1 and extending outward of the main cover body 1, and a wetting edge 6 connected to the edge of the auxiliary cover body 2 and extending outward of the auxiliary cover body 2. Referring to FIG. 1, the welt 6 is an extended side having an included angle with the main cover body 1 or the auxiliary cover body 5. In order to make the welt 6 have the force that fits the human face, the angle α between the welt 6 and the main cover 1 and the angle β between the welt 6 and the auxiliary cover 2 are both Obtuse angle. The welt 6 can be integrated with the main cover body 1 or the auxiliary cover body 2 by using the material of the filter layer, and the welt 6 can also be made of plastic with certain hardness.

(3) Welt 6, Holder 7 and Spring 8

On the basis of setting the welt 6 in the above item (2), the laminating mechanism further includes a pressing edge 7 and a spring 8. The welt 6 is connected with a pressing edge 7 which is in contact with the face, and the pressing edge 7 directly contacts the human face, and the pressing edge 7 is made of non-woven fabric. A spring 8 is fixed between the pressing edge 7 and the welt 6. The welt 6 is connected with the lanyard 13 of the main cover body 1. When the lanyard 13 is hung on the ear or head, the lanyard 13 drives the welt 6 to compress the spring 8 so that the crimp 7 is attached to the face. In order to better fix the spring 8 between the pressing edge 7 and the welt 6, each spring 7 is placed in the spring pocket 9 to form a pocket spring, and then one end of the spring pocket 9 is glued to the welt 6. , The other end of the spring pocket 9 is glued to the pressing edge 7.

The spring 8 on the main cover body 1 is arranged on the welt 6 of the main cover body 1 at the bridge of the nose, cheeks, and chin, so that these key parts that are prone to gaps with the face are close to the face. The springs 8 on the secondary cover 2 are evenly arranged on the welt 6 of the secondary cover 2, that is, are arranged on the welt 6 of the secondary cover 2 at equal intervals.

Three, fixed institutions

The fixing mechanism is placed on the sub-cover body 2 for stably covering the sub-cover body 2 on the tip of the mouth and nose. The fitting mechanism adopts any one of the following forms or any two forms or any three forms:

A. Nose pads 10

The fixing mechanism includes a pair of nose pads 10 fixed on the auxiliary mask body 2, the nose pads 10 can be clamped on the nose alar, and the nose pad 10 is made of silicone material to position the auxiliary mask body 2 on the nose alar.

B. Support skeleton 11

The fixing mechanism includes a supporting frame 11 fixed on the sub-cover body 2. The supporting frame 11 has an arc shape. The material of the supporting frame 11 can be natural rubber, silicone rubber or neoprene. Under the support of the support frame 11, the auxiliary cover 2 has a certain accommodation space, which helps the user to breathe smoothly and easily exhaust.

C. Drawstring 12

The fixing mechanism includes a drawstring 12 connected to the auxiliary cover body 2. Both the left and right sides of the auxiliary cover body 2 are provided with drawstrings 12, and the drawstrings 12 are tied to the lanyard 13 by hanging the lanyard 13 on the ears. As well as the head, the lanyard 13 can drive the drawstring 12 to be tightened while the lanyard 13 is tightened, and the secondary cover 2 is tightened to cover the mouth and nose by the drawstring 12.

Four, use process

When using this embodiment, first hang the lanyard 13 on the ears or the head. At this time, the lanyard 13 drives the drawstring 12 to tighten the secondary cover 2; then adjust the position of the cover to make the main cover 1 and The breathing piece 3 of the auxiliary mask body 2 is placed on the mouth and the tip of the nose, and the nose pads 10 on the auxiliary mask body 2 are clamped on the wing of the nose. At the same time, the spring 8 in the fitting mechanism presses the pressing edge 7 into contact with the face, and the fitting mechanism The baffle 5 in the middle is attached to the face to prevent gas from entering the cover.

Example 2 A manufacturing method of anti-fog mask

This embodiment is a manufacturing method for manufacturing the anti-smog mask of embodiment 1, including the following steps:

S1. Production of main cover 1

The non-woven fabric, activated carbon filter layer, nano-silver coating mesh, electrostatic filter cotton, and non-woven fabric are heat-melt bonded into the filter layer, and then cut into the shape of the main cover 1, and placed in the main cover A breathing valve 4 is installed on the breathing piece 3 of 1, and then two lanyards 13 are glued or sewn on both sides of the main cover body 1.

S2. Production of secondary cover 2

The non-woven fabric, activated carbon filter layer, nano-silver coating net, electrostatic filter cotton, and non-woven fabric are heat-melt bonded to form a filter layer, and cut, leaving a breathing sheet on the main cover in the middle of the filter layer The matching holes form the shape of the auxiliary cover without breathing piece.

The auxiliary cover 2 is equipped with a fixing mechanism for fixing the auxiliary cover 2 to the tip of the mouth and nose, and the fixing mechanism adopts any one or any of the following forms:

S21. A pair of nose pads 10 glued to the auxiliary mask body 2, and the nose pads 10 can be stuck on the nose wings;

S22. The support frame bonded to the auxiliary cover body 2, the support frame 11 can support the auxiliary cover body 2, and the material of the support frame 11 can be natural rubber, silicon rubber or neoprene;

S23. The drawstring 12 glued or sewn on the left and right sides of the auxiliary cover 11, the drawstring 12 on each side is tied to the lanyard 13 on the corresponding side, so that the lanyard 13 is hung while hanging the rope 13 can drive the rope 12 to tighten the sub-cover 2 to the mouth and nose.

S3. Installation and fitting mechanism

Sewing or bonding a laminating mechanism at the edges of the main cover body 1 and the auxiliary cover body 2. The laminating mechanism adopts any one or any of the following forms:

S31. The sides of the main cover body 1 and the auxiliary cover body 2 are sewn or bonded to the face-protruding silicone baffle 5.

S32. The edge of the main cover body 1 is integrally connected with a welt 6 extending outward of the main cover body 1, and the edge of the auxiliary cover body 2 is integrally connected with a welt 6 extending outward of the auxiliary cover body 2, and the welt 6 is connected to the main cover. The included angle between the bodies 1 and between the welt 6 and the auxiliary cover 2 is an obtuse angle. The welt 6 can be made of a filter layer and integrated with the main cover 1 or the auxiliary cover 2.

S33. On the basis of S32, the welt 6 is bonded or sewn with a crimp 7 that contacts the face. The crimp 7 is made of non-woven fabric, and a spring pocket 9 is bonded between the welt 6 and the crimp 7 , The spring pocket 9 is equipped with a spring 8; the lanyard 13 of the main cover body 1 is sewn or glued to the welt 6. The lanyard 13 drives the welt 6 to compress the spring 8 so that the edge 7 is attached to the face.

S4. Connect the main cover body 1 and the auxiliary cover body 2

The auxiliary cover 2 is bonded to the edge of the breathing plate of the main cover 1, so that the cover is divided into a breathing chamber 15 placed in the auxiliary cover 2 and an anti-fog placed between the main cover 1 and the auxiliary cover 2. Room 14.

It should be noted that the above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for those skilled in the art to The technical solutions recorded in the above embodiments are modified, or some of the technical features are equivalently replaced. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

An anti-smog mask, comprising a mask body and a lanyard connected to the mask body, characterized in that : the mask body includes a main mask body covering the cheeks, mouth and nose, and a secondary mask body arranged in the mouth and nose of the main mask body , The auxiliary mask body is connected with the main mask body. The auxiliary mask body has a breathing piece covering the front of the mouth and nose. The breathing piece is also placed on the main mask body. There is a breathing valve on the breathing piece. The breathing room in the body and the anti-fog room placed between the main cover and the auxiliary cover; both the main cover and the auxiliary cover have a filter layer that can filter PM2.5, and the edges of the main cover and the auxiliary cover are both It is provided with a fitting mechanism to make the cover fit the face.
The mask haze of the anti-fog claim 1, wherein: bonding rim along the crosspiece means includes a main cover and a sub cover of the convex face.
The anti-smog mask according to claim 1 or 2, characterized in that : the fitting mechanism comprises a welt connected to the edges of the main cover and the auxiliary cover and extending to the outside of the cover, and between the welt and the main cover The angle between the welt and the auxiliary cover is an obtuse angle.
The anti-fog mask according to claim 3, characterized in that : the welt is connected with a crimp that contacts the face, a spring is fixed between the welt and the crimp, and the welt is connected with the lanyard of the main cover body, The lanyard drives the welt compression spring to make the welt stick to the face.
The anti-smog mask according to claim 4, characterized in that : springs are fixed on the bridge of the nose, cheeks, and chin on the welt of the main cover body, and the springs on the welt of the auxiliary cover body are equally spaced; each spring is placed In the spring pocket, the spring pocket is bonded on the welt and the pressing edge.
The anti-fog mask according to any one of claims 1, 2, 4, 5, characterized in that : the auxiliary cover is provided with a fixing mechanism for fixing the auxiliary cover to the tip of the mouth and nose, and the fixing mechanism is any of the following One or several forms:

A. The fixing mechanism includes a pair of nose pads fixed on the auxiliary mask body, and the nose pads are placed on the nose wings;

B. The fixing mechanism includes a support frame that is fixed on the auxiliary cover and can support the auxiliary cover;

C. The fixing mechanism includes a draw rope connected with the auxiliary cover body, the draw rope is tied to the lanyard, while the lanyard is hung, the lanyard drives the draw rope to cover the auxiliary cover body on the mouth and nose tip.
The anti-fog mask according to claim 2, characterized in that the barrier is made of silica gel, and the distance between the edge of the main cover and the edge of the auxiliary cover is 4-7 cm.
A method for making an anti-smog mask according to any one of claims 1-7, characterized in that it comprises the following steps:

S1. Production of the main cover

The non-woven fabric, activated carbon filter layer, nano silver coating net, electrostatic filter cotton, and non-woven fabric are thermally bonded to form the filter layer, and then cut into the main cover, and the lanyard is bonded or stitched On the main cover, install a breathing valve on the breathing plate;

S2. Production of auxiliary cover

Cut the filter layer, leaving a hole in the middle that matches the breathing film on the main cover;

S3. Installation and fitting mechanism

Sewing or bonding mechanism at the edges of the main cover and the auxiliary cover;

S4. Connect the main cover and the auxiliary cover

The auxiliary cover is glued to the edge of the breathing piece of the main cover, so that the cover is divided into a breathing chamber placed in the auxiliary cover and an anti-fog chamber placed between the main cover and the auxiliary cover.
The method for manufacturing an anti-fog mask according to claim 8, characterized in that :

S3. Installation and fitting mechanism

Sewing or bonding the bonding mechanism at the edges of the main cover body and the auxiliary cover body, the bonding mechanism adopts any one or any of the following forms:

S31. Sewing or bonding the silicone-based bars protruding to the face at the edges of the main cover and the auxiliary cover;

S32. The edges of the main cover body and the auxiliary cover body are integrally connected with a welt extending to the outside of the cover body. The angle between the welt and the main cover body and between the welt and the auxiliary cover body is an obtuse angle;

S33. The edges of the main cover body and the auxiliary cover body are integrally connected with a welt extending to the outside of the cover. The angle between the welt and the main cover and between the welt and the auxiliary cover is an obtuse angle; Bonded or sewn with a crimp in contact with the face, a spring pocket is bonded between the welt and the crimp, and a spring is built in the spring pocket; the lanyard of the main cover body is sewn or bonded to the welt, the lanyard Drive the welt compression spring to make the welt stick to the face.
The method for manufacturing an anti-smog mask according to claim 8 or 9, characterized in that :

S2. Production of auxiliary cover

A fixing mechanism is installed on the auxiliary cover to fix the auxiliary cover to the tip of the mouth and nose. The fixing mechanism adopts any one or any of the following forms:

S21. A pair of nose pads that can be stuck on the alar of the nose when glued to the auxiliary mask body;

S22. The support frame that can be adhered to the auxiliary cover to support the auxiliary cover;

S23. The drawstring glued or sewn on the auxiliary cover body, the drawstring is tied to the lanyard, while the lanyard is hung, the lanyard drives the drawstring to cover the auxiliary cover on the mouth and nose.