CN112205692B - Non-woven mask and production process thereof - Google Patents
Non-woven mask and production process thereof Download PDFInfo
- Publication number
- CN112205692B CN112205692B CN202011324693.1A CN202011324693A CN112205692B CN 112205692 B CN112205692 B CN 112205692B CN 202011324693 A CN202011324693 A CN 202011324693A CN 112205692 B CN112205692 B CN 112205692B
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- support
- filter layer
- mask body
- filter
- valve
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- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 54
- 239000004744 fabric Substances 0.000 claims description 34
- 229920000742 Cotton Polymers 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 15
- 239000004745 nonwoven fabric Substances 0.000 claims description 12
- 238000004080 punching Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 abstract description 15
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 13
- 230000001681 protective effect Effects 0.000 abstract description 2
- 230000007306 turnover Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 103
- 230000002441 reversible effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D27/00—Details of garments or of their making
- A41D27/28—Means for ventilation
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention relates to a non-woven mask and a production process thereof, and relates to the technical field of protective masks. The breathing valve comprises a mask body which is in a cup shape as a whole, a breather valve which is arranged on the mask body, and an air vent which is arranged on the breather valve, wherein a nose bridge strip is arranged on the outer surface of the upper end of the mask body, ear straps are fixedly connected to the two sides of the mask body, the breather valve comprises a base which is arranged on the inner side of the mask body and a support which is arranged on the outer side of the mask body, one end of the support is detachably arranged on the base, a valve cover is connected with the other end of the support in a turnover manner, a filter layer which can realize positive and negative bidirectional filtration is arranged in the support, and a filter positioning component which is arranged on the support is arranged on the air vent or is arranged on the valve cover, or one end which is close to the valve cover is arranged on the support, and a limiting rod which is positioned inside the support and is in butt with the filter layer is also arranged on the valve cover. The invention can realize the bidirectional filtration of the mask and has high structural stability.
Description
Technical Field
The invention relates to the technical field of protective masks, in particular to a non-woven fabric mask and a production process thereof.
Background
Currently, the non-woven fabric cup-shaped mask is divided into a breathing valve and a non-breathing valve, wherein the breathing valve on the cup-shaped mask is also called an exhalation valve, a valve is arranged in the exhalation valve before improvement, and the valve is closed when in inhalation; when exhaling, the valve is opened, and the gas exhaled by the wearer (with the cup-shaped mask before improvement) is directly discharged into the surrounding environment without being filtered. Therefore, the cup-shaped mask is only protected in one direction, only people wearing the mask are protected, and people around the wearer are not protected, so that the mask with the breather valve before improvement is mainly applied to industrial dustproof masks and antifog haze (PM 2.5) masks, is not suitable for medical institutions, and if the cup-shaped mask before improvement is worn by people with infectious diseases, the surrounding people are still at risk and do not have a protection effect.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a non-woven mask and a production process thereof, and the non-woven mask has the advantages of realizing bidirectional filtration of the mask and being high in structural stability.
In a first aspect, the above object of the present invention is achieved by the following technical solutions:
the utility model provides a non-woven fabrics gauze mask, is including being cup type gauze mask body on the whole, installs the breather valve on the gauze mask body to and set up the bleeder vent on the breather valve, the upper end surface mounting of gauze mask body has the bridge of the nose strip, and gauze mask body both sides equal fixedly connected with ear area, the breather valve is including installing in the inboard base of gauze mask body and installing in the outside support of gauze mask body, support one end detachable installs on the base, and the other end is convertible is connected with the valve gap, install the filter layer that can realize positive and negative two-way filtration in the support, and will the filter layer is installed the filtration locating component on the support, the bleeder vent is perhaps set up on the valve cap, or set up the one end that is close to the valve gap on the support, still install on the valve gap and be located a plurality of inside and with the gag lever post of filter layer looks butt.
By adopting the technical scheme, the valve cover is arranged in a reversible mode, so that people can open the valve cover on the breather valve when the breather valve is suitable, the breathing gas quantity and the breathing gas quantity of the people are increased, and the wearer can feel more comfortable when wearing the breather valve; the support and the support are detachably connected, so that people can quickly and conveniently assemble the breather valve, and the filter layer capable of realizing forward and reverse bidirectional filtration is arranged on the support of the breather valve, so that bidirectional filtration of gas is realized; simultaneously, install the gag lever post on the valve gap can play certain limiting displacement to the filter layer, let the filter layer be difficult to off tracking on the breather valve to the structural stability of this application has been improved.
In a preferred example, the base is provided with a clamping groove facing the valve cover, a first clamping block is arranged on the side wall of the clamping groove, a second clamping block matched with the first clamping block is arranged at the end part of the support, and the support is connected with the base through the first clamping block and the second clamping block.
Through adopting above-mentioned technical scheme, under the effect of first fixture block and second fixture block, people can be in the same place support and base joint, like this, people can conveniently install the breather valve on the gauze mask body.
In a preferred example, the first clamping block may have a first wedge-shaped end face on a side close to the second clamping block, the second clamping block may have a second wedge-shaped end face on a side close to the first clamping block, and the first wedge-shaped end face and the second wedge-shaped end face are matched with each other.
Through adopting above-mentioned technical scheme, under the effect of first wedge terminal surface and second wedge terminal surface, people can be quick, simple and convenient with the support card go into the draw-in groove in to let people can install the breather valve on the gauze mask body more conveniently.
The invention can be further configured in a preferred example that the filtering and positioning assembly comprises a positioning ring, a positioning groove is arranged on the support, a clamping plate clamped in the positioning groove is arranged at the periphery of the positioning ring, the periphery of the positioning ring is connected with the support through the clamping plate, and a third filtering layer is arranged inside the positioning ring.
Through adopting above-mentioned technical scheme, the filter layer can block on the support under the effect of holding ring, like this, people can conveniently install the filter layer.
The invention can be further configured in a preferred example that the filtering and positioning assembly comprises a first side plate, a first filter layer, a second filter layer and a second side plate which are sequentially arranged on the mask body from inside to outside, wherein uniform ends of the first side plate, the first filter layer, the second filter layer and the second side plate are arranged on the support, a gap is arranged between the other end of the first side plate and the inner wall of the support, and gaps between the first side plate and the support, between the first filter layer and the support, between the second filter layer and the support and between the second side plate and the support are sequentially staggered on two sides of the support.
By adopting the technical scheme, when the air is sucked, after the air enters from the gap between the first side plate and the support, the air sequentially passes through the first filter layer and the second filter layer to be filtered, and finally enters the human body from the gap between the second side plate and the support; when exhaling, after the gas passes through the gap between the second side plate and the support, the gas is filtered by the first filter layer and the second filter layer in sequence, and finally, the gas is exhausted from the vent holes after exhaling from the gap between the first side plate and the support.
In a preferred example, the first side plate and/or the second side plate may further include an air guide plate arranged in an inclined manner, and a material placing plate arranged vertically between the air guide plate and the side wall of the support, one end of the air guide plate is installed on the support, the other end of the air guide plate is connected with the material placing plate, and the spare end of the material placing plate is arranged at intervals between the material placing plate and the support.
Through adopting above-mentioned technical scheme, under the effect of air guide plate, can exist certain interval between first filter layer and the second filter layer to make things convenient for gas to pass through first filter layer and second filter layer, and then let people can be more comfortable wearing this application.
The present invention may be further configured in a preferred example, wherein the first filter layer, the second filter layer, and the third filter layer each include a nonwoven fabric layer, an isolation filter layer, and a water blocking layer sequentially disposed from inside to outside.
Through adopting above-mentioned technical scheme, this application not only can filter people's exhale gas, can also filter people's inhaled gas to let this application realize two-way filtration.
The present invention may be further configured in a preferred embodiment, the plurality of limit rods are located in a gap between the first side plate and the support.
Through adopting above-mentioned technical scheme, the gag lever post can carry out certain blocking to first filter layer, prevents first filter layer off tracking to the structural stability of this application has been improved.
In a second aspect, the second object of the present invention is achieved by the following technical solutions:
the production process of the non-woven fabric mask comprises the following steps:
s1: the raw materials of the mask body of the cup-shaped mask are divided into an outer group of cloth, a middle group of filter cotton and an inner group of cloth;
s2: respectively placing the outer group cloth, the middle group filter cotton and the inner group cloth in a preheating box for preheating, and after the outer group cloth, the middle group filter cotton and the inner group cloth reach proper temperature, placing the outer group cloth, the middle group filter cotton and the inner group cloth in a cup-shaped mask forming machine for punching forming to form a mask body;
s3: the molded mask body is put into a punching machine for punching, so that a mounting hole for placing a breather valve is formed in the mask body;
s4: according to a design drawing, a filter layer is arranged on a support of a breather valve through a filter positioning assembly, and a valve cover with a limiting rod is rotatably arranged on the support;
s5: and (3) installing the base of the breather valve on the step (S3), arranging the base in the mask body, installing the support with the filter layer and the valve cover on the base, and installing the nose bridge strip and the ear belt on the mask body.
By adopting the technical scheme, the valve cover is arranged in a reversible mode, so that people can open the valve cover on the breather valve when the people are right, and the amount of breathing and inhaling of the people is increased; the support and the support are detachably connected, so that people can quickly and conveniently assemble the breather valve, and the filter layer capable of realizing forward and reverse bidirectional filtration is arranged on the support of the breather valve, so that bidirectional filtration of gas is realized; simultaneously, install the gag lever post on the valve gap can play certain limiting displacement to the filter layer, let the filter layer be difficult to follow the breather valve and drop to the structural stability of this application has been improved.
In summary, the present invention includes at least one of the following beneficial technical effects:
1. the valve cover is in a reversible mode, so that people can open the valve cover on the breather valve when appropriate, the breathing gas amount and the breathing gas amount of the people are increased, and the people feel more comfortable when wearing the valve cover;
2. the support and the support are detachably connected, so that people can quickly and conveniently assemble the breather valve, and the filter layer capable of realizing forward and reverse bidirectional filtration is arranged on the support of the breather valve, so that bidirectional filtration of gas is realized;
3. the gag lever post of installing on the valve gap in this application can play certain limiting displacement to the filter layer, lets the filter layer be difficult to follow the breather valve and drops to the structural stability of this application has been improved.
Drawings
FIG. 1 is a schematic view of the structure of a non-woven mask according to the present invention;
FIG. 2 is a schematic illustration of a breather valve configuration with a first type of filter positioning assembly;
fig. 3 is a schematic view of a breather valve structure with a second type of filter positioning assembly.
Reference numerals: 1. a mask body; 2. a respiratory valve; 21. a support; 22. a valve cover; 23. a filter layer; 231. a first filter layer; 232. a second filter layer; 233. a third filter layer; 24. a filtering and positioning assembly; 241. a positioning ring; 242. a positioning groove; 243. a clamping plate; 244. a first side plate; 245. a second side plate; 246. an air guide plate; 247. a material placing plate; 25. a limit rod; 26. a base; 27. a clamping groove; 28. a first clamping block; 29. a second clamping block; 3. ventilation holes; 4. a nose bridge strip; 5. ear bands.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the application provides a non-woven mask, including the gauze mask body 1 that is the cup on the whole, install breather valve 2 on gauze mask body 1 to and set up bleeder vent 3 on breather valve 2, the upper end surface mounting of gauze mask body 1 has nose bridge strip 4, and gauze mask body 1 both sides equal fixedly connected with ear area 5.
In actual operation, nose bridge strip 4 and ear strap 5 are prior art, and this application mainly only can realize one-way filtration to the cup type gauze mask that has breather valve 2 before improving to cup type gauze mask that has breather valve 2 before making the improvement can only be used for dustproof, can not be used for the problem of epidemic situation protection, and provide a nonwoven gauze mask that can realize two-way filtration, stable in structure.
As shown in fig. 2, a clamping groove 27 facing the valve cover 22 is provided on the base 26, a first clamping block 28 is provided on a side wall of the clamping groove 27, a second clamping block 29 matching with the first clamping block 28 is provided on an end of the support 21, and the support 21 is connected with the base 26 through the first clamping block 28 and the second clamping block 29, so that people can conveniently install the breather valve 2 on the mask body 1. Preferably, the end surface of the first clamping block 28 near the side of the second clamping block 29 is a first wedge-shaped end surface, the end surface of the second clamping block 29 near the side of the first clamping block 28 is a second wedge-shaped end surface, and the first wedge-shaped end surface and the second wedge-shaped end surface are mutually matched. Thus, the support 21 is more convenient to install, and the support 21 is not easy to fall off from the base 26.
As shown in fig. 1, the ventilation holes 3 are arranged on the valve cover 22 or on one end of the support 21 close to the valve cover 22, and the valve cover 22 is also provided with a plurality of limit rods 25 which are positioned inside the support 21 and are abutted against the filter layer 23. In practice, one or more limit rods 25 may be provided, and the limit rods 25 are located in the gaps between the first side plate 244 and the support 21 to prevent the filter layer 23 (including the first filter layer 231, the second filter layer 232, and the third filter layer 233) from deviating.
As shown in fig. 2 and 3, the breather valve 2 includes a base 26 mounted on the inner side of the mask body 1 and a support 21 mounted on the outer side of the mask body 1, one end of the support 21 is detachably mounted on the base 26, and the other end of the support 21 is connected with a valve cover 22 in a reversible manner, so that people can conveniently mount the breather valve 2 on the mask body 1, and can open the valve cover 22 when needed, thereby being convenient for ventilation.
As shown in fig. 2, the first filter positioning assembly 24 has the following structure: the filtering and positioning assembly 24 comprises a positioning ring 241, a positioning groove 242 is formed in the support 21, a clamping plate 243 clamped in the positioning groove 242 is arranged on the periphery of the positioning ring 241, the periphery of the positioning ring 241 is connected with the support 21 through the clamping plate 243, and the filtering layer 23 is arranged inside the positioning ring 241. The filter layer 23 can be clamped on the support 21 under the action of the positioning ring 241, so that people can conveniently install the filter layer 23.
In actual operation, in order to clamp the clamping plate 243 in the first filtering and positioning assembly 24, the clamping plates 243 and the positioning slots 242 may be respectively provided with clamping blocks, and the clamping blocks of the clamping plates 243 and the positioning slots 242 and 242 on the clamping plates 243 may be wedge-shaped surfaces on the mating surfaces, so as to facilitate the assembly of the clamping plates 243 and the positioning slots 242.
As shown in fig. 3, the second filter positioning assembly 24 has the following structure: the filtering and positioning assembly 24 comprises a first side plate 244, a first filtering layer 231, a second filtering layer 232 and a second side plate 245 which are sequentially arranged on the mask body 1 from inside to outside, wherein uniform ends of the first side plate 244, the first filtering layer 231, the second filtering layer 232 and the second side plate 245 are arranged on the support 21, gaps are arranged between the other ends of the first side plate 244 and the inner wall of the support 21, gaps between the first filtering layer 244 and the support 21, gaps between the second filtering layer 231 and the support 21, and gaps between the second filtering layer 232 and the support 21 are sequentially staggered on two sides of the support 21, and therefore the bidirectional filtering function for gas is achieved.
Preferably, as shown in fig. 3, the first side plate 244 and/or the second side plate 245 include an air guide plate 246 arranged obliquely, and a material placing plate 247 arranged vertically between the side walls of the support 21, one end of the air guide plate 246 is mounted on the support 21, the other end is connected with the material placing plate 247, and the empty end of the material placing plate 247 is arranged at intervals with the support 21. Under the effect of air guide plate 246, can exist certain interval between first filter layer 231 and the second filter layer 232 to make things convenient for gas to pass through first filter layer 231 and second filter layer 232, and then let people can be more comfortable wearing this application.
In actual operation, the first filtering and positioning assembly 24 shown in fig. 2 is simpler than the second filtering and positioning assembly 24 shown in fig. 3, and when people wear the cup-shaped mask with the first filtering and positioning assembly 24, the third filtering layer 233 has only three layers of filtering structures, and compared with the layers of the filtering structures (five to six layers) of the mask body in the cup-shaped mask, so that the wearing comfort of the cup-shaped mask with the first filtering and positioning assembly 24 is higher than that of the cup-shaped mask without the breathing valve.
When a person wears the cup-shaped mask with the second type filter positioning assembly 24, although the second type filter positioning assembly 24 has a six-layer filter structure, which is substantially the same as the number of layers of the filter structure of the mask body, as shown in fig. 3, since the first filter layer 231 and the second filter layer 232 of the present application are arranged at intervals, and the gap through which fluid flows is still provided in the breathing valve, the wearing comfort of the cup-shaped mask with the second type filter positioning assembly 24 is greater than that of the cup-shaped mask without the breathing valve.
As shown in fig. 2 and 3, a filter layer 23 capable of realizing forward and reverse bidirectional filtration and a filter positioning assembly 24 for mounting the filter layer 23 on the support 21 are installed in the support 21, and the present application provides two structures of the filter positioning assembly 24, and both the filter positioning assemblies 24 can enable the filter layer 23 to be mounted on the support 21. In actual operation, the first filter layer 231, the second filter layer 232 and the third filter layer 233 of the present application may be collectively referred to as the filter layer 23, the third filter layer 233 may be separately used to implement bidirectional filtration, and the first filter layer 231 and the second filter layer 232 are matched to implement bidirectional filtration.
Further, the first filter layer 231, the second filter layer 232 and the third filter layer 233 each include a nonwoven fabric layer, an isolation filter layer and a water blocking layer, which are sequentially arranged from inside to outside.
During actual operation, the first filtering layer 231, the second filtering layer 232 and the third filtering layer 233 of the present application may be collectively referred to as the filtering layer 23, in the present application, the filtering layer 23 may be made of materials identical to the body (i.e. made of outer group cloth, middle group filter cotton and inner group cloth), and may also be made of materials and structures adopted by the existing planar mask, i.e. the materials of the nonwoven fabric layer, the isolation filtering layer and the water-blocking layer of the present application may be made of materials identical to the planar mask (in the prior art), which is not described herein in detail.
In actual operation, the production process of the non-woven fabric mask comprises the following steps:
s1: the raw materials of the mask body of the cup-shaped mask are divided into an outer group of cloth, a middle group of filter cotton and an inner group of cloth;
during actual operation, the raw materials should be grouped in advance, after the inner group cloth and the outer group cloth are respectively stretched and formed in advance, the middle group of filter cotton is folded in half and is put in the middle of the inner group and the outer group after being super-synthesized into an arch piece, so that the problems that the structure of the middle group of filter cotton is damaged and the filtering efficiency is reduced due to stretching can be avoided, and the cup-shaped mask of the cup-shaped filter cotton filter device meets N95 or kN95 filtering standards. Meanwhile, the outer group of cloth of the filter cotton filter device is formed by arranging non-woven fabrics and needled cotton from outside to inside in a laminated mode, the inner group of cloth is formed by double-layer non-woven fabrics, and the middle group of filter cotton can also be made of single-layer needled cotton or double-layer needled cotton.
S2: respectively placing the outer group cloth, the middle group filter cotton and the inner group cloth in a preheating box for preheating, and after the outer group cloth, the middle group filter cotton and the inner group cloth reach proper temperature, placing the outer group cloth, the middle group filter cotton and the inner group cloth in a cup-shaped mask forming machine for stamping forming to form a mask body 1;
during actual operation, this application is through preheating back to outer group's cloth, well group's filter pulp and inner group's cloth, can let the gauze mask body 1 of this application can be more easily fashioned, simultaneously, preheat not only with lower costs through the preheating cabinet, preheat the effect better moreover, can not cause the damage to outer group's cloth, well group's filter pulp and inner group's cloth.
S3: the molded mask body 1 is put into a punching machine for punching, so that a mounting hole for placing the breather valve 2 is formed in the mask body 1;
during actual operation, above-mentioned mounting hole mainly used installs breather valve 2, simultaneously, during actual operation, the diameter of mounting hole can be slightly less than breather valve 2 to let gauze mask body 1 have a part structure joint in breather valve 2, thereby improve the gas tightness of this application.
S4: according to the design drawing, a filter layer 23 is arranged on a support 21 of the breather valve 2 through a filter positioning assembly 24, and a valve cover 22 with a limiting rod 25 is rotatably arranged on the support 21;
in actual operation, the application can adopt first type filter positioning component 24 to install filter layer 23, also can adopt second type filter positioning component 24 to install filter layer 23, and people can select according to self needs.
S5: the base 26 of the breather valve 2 is mounted on the step S3 with the base 26 inside the mask body 1, the seat 21 with the filter layer 23 and the valve cover 22 is mounted on the base 26, and the nose bridge 4 and the ear strap 5 are mounted on the mask body 1.
In actual operation, the valve cover 22 is arranged in a reversible mode, so that people can open the valve cover 22 on the breather valve 2 at proper time to increase the amount of breathing and inhaling of people; the support 21 is detachably connected with the support 21, so that people can quickly and conveniently assemble the breather valve 2, and the filter layer 23 capable of realizing forward and reverse bidirectional filtration is arranged on the support 21 of the breather valve 2, so that bidirectional filtration of gas is realized; simultaneously, install the gag lever post 25 on valve gap 22 can play certain limiting displacement to filter layer 23, lets filter layer 23 be difficult to follow breather valve 2 and drops to the structural stability of this application has been improved.
The embodiments of the present invention are all preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (6)
1. The utility model provides a non-woven fabrics gauze mask, includes wholly is cup-shaped gauze mask body (1), installs breather valve (2) on gauze mask body (1), and sets up bleeder vent (3) on breather valve (2), the upper end surface mounting of gauze mask body (1) has nose bridge strip (4), and gauze mask body (1) both sides are all fixedly connected with ear area (5), a serial communication port, breather valve (2) including install in gauze mask body (1) inboard base (26) and install in gauze mask body (1) outside support (21), support (21) one end detachable installs on base (26), and the other end is convertible to be connected with valve gap (22), install in support (21) can realize positive and negative two-way filtration filter layer (23), and will filter layer (23) install filtration locating component (24) on support (21), or set up on valve gap (22) or set up on support (21) be close to the one end of valve gap (22), still install a plurality of filter layers (21) and be located inside and abutment with support (25) of support (23) on valve gap (22);
a clamping groove (27) facing the valve cover (22) is formed in the base (26), a first clamping block (28) is arranged on the side wall of the clamping groove (27), a second clamping block (29) matched with the first clamping block (28) is arranged at the end part of the support (21), and the support (21) is connected with the base (26) through the first clamping block (28) and the second clamping block (29);
the end face of the first clamping block (28) close to the side of the second clamping block (29) is a first wedge-shaped end face, the end face of the second clamping block (29) close to the side of the first clamping block (28) is a second wedge-shaped end face, and the first wedge-shaped end face and the second wedge-shaped end face are mutually matched;
the utility model provides a filter positioning assembly (24) is including first curb plate (244), first filter layer (231), second filter layer (232) and second curb plate (245) that arrange in proper order from inside to outside on gauze mask body (1), first curb plate (244), first filter layer (231), second filter layer (232) and second curb plate (245) homogeneous end are installed on support (21), are equipped with the clearance between the other end and support (21) inner wall, clearance between first curb plate (244) and support (21), clearance between first filter layer (231) and support (21), clearance between second filter layer (232) and support (21), and clearance between second curb plate (245) and support (21) are the staggered arrangement in proper order in the both sides of support (21).
2. The non-woven mask according to claim 1, wherein the filtering and positioning assembly (24) comprises a positioning ring (241), a positioning groove (242) is formed in the support (21), a clamping plate (243) clamped in the positioning groove (242) is arranged on the periphery of the positioning ring (241), the periphery of the positioning ring (241) is connected with the support (21) through the clamping plate (243), and a third filtering layer (233) is arranged in the positioning ring (241).
3. The non-woven mask according to claim 1, wherein the first side plate (244) and/or the second side plate (245) comprises a gas guide plate (246) which is obliquely arranged and a material placing plate (247) which is vertically arranged between the side walls of the support (21), one end of the gas guide plate (246) is arranged on the support (21), the other end of the gas guide plate is connected with the material placing plate (247), and the spare end of the material placing plate (247) is arranged at intervals with the support (21).
4. A non-woven mask according to claim 3, wherein the first filter layer (231), the second filter layer (232) and the third filter layer (233) each comprise a non-woven layer, an isolating filter layer and a water-blocking layer which are sequentially arranged from inside to outside.
5. The non-woven mask according to claim 4, wherein the plurality of limit rods (25) are provided, and the plurality of limit rods (25) are located in the gap between the first side plate (244) and the support (21).
6. A process for producing the nonwoven fabric mask according to any one of claims 1 to 5, comprising the steps of:
s1: the raw materials of the mask body of the cup-shaped mask are divided into an outer group of cloth, a middle group of filter cotton and an inner group of cloth;
s2: respectively placing the outer group cloth, the middle group filter cotton and the inner group cloth in a preheating box for preheating, and after the outer group cloth, the middle group filter cotton and the inner group cloth reach proper temperature, placing the outer group cloth, the middle group filter cotton and the inner group cloth in a cup-shaped mask forming machine for punching forming to form a mask body (1);
s3: the molded mask body (1) is put into a punching machine for punching, so that a mounting hole for placing a breather valve (2) is formed in the mask body (1);
s4: according to a design drawing, a filter layer (23) is arranged on a support (21) of a breather valve (2) through a filter positioning assembly (24), and a valve cover (22) with a limiting rod (25) is rotatably arranged on the support (21);
s5: the base (26) of the breather valve (2) is arranged on the mask body (1) after stamping in the step S3, the base (26) is positioned inside the mask body (1), the support (21) with the filter layer (23) and the valve cover (22) is arranged on the base (26), and the nose bridge strip (4) and the ear belt are arranged on the mask body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011324693.1A CN112205692B (en) | 2020-11-24 | 2020-11-24 | Non-woven mask and production process thereof |
Applications Claiming Priority (1)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103148261A (en) * | 2013-03-28 | 2013-06-12 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm driving device for flat gate valve |
| CN205624592U (en) * | 2016-04-15 | 2016-10-12 | 邯郸派瑞电器有限公司 | Gauze mask of breather valve and filter element can be dismantled in area |
| CN109349704A (en) * | 2018-10-31 | 2019-02-19 | 名典上品（北京）信息技术有限公司 | A kind of protective mask |
| CN109380785A (en) * | 2018-09-11 | 2019-02-26 | 成都惠英融创科技有限公司 | A kind of anti-haze and the mask and preparation method thereof with herbal drug interlayer |
| CN109757808A (en) * | 2017-11-07 | 2019-05-17 | 深中海医疗用品（深圳）有限公司 | Cup type mask manufacturing method and cup type mask |
| AU2020100228A4 (en) * | 2020-02-17 | 2020-03-26 | EOS-ENVIRO/EOS Import and Export Ltd. | Filter Mask with UVC LED |
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2020
- 2020-11-24 CN CN202011324693.1A patent/CN112205692B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148261A (en) * | 2013-03-28 | 2013-06-12 | 纽威石油设备（苏州）有限公司 | Pneumatic diaphragm driving device for flat gate valve |
| CN205624592U (en) * | 2016-04-15 | 2016-10-12 | 邯郸派瑞电器有限公司 | Gauze mask of breather valve and filter element can be dismantled in area |
| CN109757808A (en) * | 2017-11-07 | 2019-05-17 | 深中海医疗用品（深圳）有限公司 | Cup type mask manufacturing method and cup type mask |
| CN109380785A (en) * | 2018-09-11 | 2019-02-26 | 成都惠英融创科技有限公司 | A kind of anti-haze and the mask and preparation method thereof with herbal drug interlayer |
| CN109349704A (en) * | 2018-10-31 | 2019-02-19 | 名典上品（北京）信息技术有限公司 | A kind of protective mask |
| AU2020100228A4 (en) * | 2020-02-17 | 2020-03-26 | EOS-ENVIRO/EOS Import and Export Ltd. | Filter Mask with UVC LED |
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| CN112205692A (en) | 2021-01-12 |
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