CN213215473U - Convenient to carry's gauze mask with adjustable frenulum elasticity - Google Patents
Convenient to carry's gauze mask with adjustable frenulum elasticity Download PDFInfo
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- CN213215473U CN213215473U CN202021849005.9U CN202021849005U CN213215473U CN 213215473 U CN213215473 U CN 213215473U CN 202021849005 U CN202021849005 U CN 202021849005U CN 213215473 U CN213215473 U CN 213215473U
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Abstract
The utility model provides a portable mask with adjustable lacing tightness, which comprises a mask base body and lacing; two at least through-holes have been seted up to the first long limit department of gauze mask base member, frenulum one end is fixed in the long limit one end of second, and the frenulum other end wears to establish in proper order along the S-shaped be fixed in the other end on the long limit of second behind the through-hole, pull the frenulum length that the frenulum part between the adjacent through-hole is used for adjusting hangers department, pull the frenulum part of pulling out and hang the cover in person' S neck department of wearing. The utility model discloses improved the mounting means of traditional gauze mask frenulum, worn to establish the through-hole through continuous S-shaped and fixed with the gauze mask base member, can adjust the frenulum part length of hangers department through dragging the frenulum part between the adjacent through-hole, and need not to adjust frenulum length through the mode of addding solid fixed sliding block again.
Description
Technical Field
The utility model belongs to the technical field of the gauze mask, a gauze mask with adjustable lacing elasticity is related to, especially, relate to a convenient to carry's gauze mask with adjustable lacing elasticity.
Background
Coronaviruses are a large group of viruses widely existing in nature, and the diameter of virus particles is 60-120nm, the average diameter is 100nm, and the virus particles are spherical or ellipsoidal. 2019A novel coronavirus (2019-nCoV, causing COVID-19) is currently known as the 7 th coronavirus that can infect humans. After patients are infected with coronavirus, the common signs of the patients comprise respiratory symptoms, fever, cough, shortness of breath, dyspnea and the like. In more severe cases, the infection can lead to pneumonia, severe acute respiratory syndrome, multiple organ failure, and even death. In order to protect the health and safety of the residents and other people, the residents wear the medical surgical mask in an unconventional manner in order to strengthen the virus protection during the epidemic situation.
CN111407021A discloses a sanitary mask made of active nano-level melt-blown fabric and a production device thereof, the sanitary mask comprises a mask body and a lacing group, wherein second folding parts are longitudinally arranged at two sides of the mask body, second pressing parts are respectively arranged on the two second folding parts, and the second pressing parts are longitudinally arranged and extend to the upper end and the lower end of the mask body; the edges of two sides of the mask body are symmetrically provided with shrinkage holes; frenulum group includes the elastic cord, plastics snak link and U type earmuff, the opening has been seted up at the middle part in the U type earmuff outside, wear to establish the elastic cord in the U type earmuff, the elastic cord middle part that is arranged in the U type earmuff passes through the through-hole and the cover establishes plastics snak link, elastic cord one end is the S-shaped four shrinkage orifices that pass on gauze mask body one side in proper order and is connected with the elastic cord other end, through U type earmuff and user' S ear back contact, effectively alleviate the painful sense of production when wearing the gauze mask for a long time.
CN202941439U discloses a mask with an opening interlayer, which comprises a mask body and two laces at two sides, wherein the mask body comprises an outer layer and an inner layer made of cotton, a non-woven filter cloth is lined between the inner layer and the outer layer, an opening is formed on the inner layer, and a replaceable filter layer is lined between the inner layer and the non-woven filter cloth. The material of the filter layer is one or more of filter cloth attached with activated carbon fiber, bamboo charcoal fiber filter cloth and high-efficiency filter melt-blown cloth. The lace comprises an elastic band and a double-hole spring buckle.
CN204306081U discloses a comfortable gauze mask of riding, including outer gauze mask, inlayer filter mantle and breather valve, wherein: the edge at the nose bridge position of the outer layer mask is provided with a pressing strip easy to shape, so that the air tightness at the nose bridge position is guaranteed, elastic bands with adjustable length and convenient to wear are arranged on two sides of the outer layer mask, the elastic bands with adjustable length are sewn on the outer side of the outer layer mask, two sides of the mouth parts of the outer layer mask and the inner layer filter mask are provided with mounting holes, the breather valve is provided with a valve body and a valve cover, the valve body and the valve cover are fastened through a straight-line-shaped groove and then are pressed, connected and fixed in a rotating mode, and the valve body and the valve cover are fastened between the mounting holes of the mouth parts of the outer layer mask and the inner layer filter mask.
However, with the reproduction and the rework of the reproduction and the necessary travel, the time of the majority of residents in the public places is prolonged continuously, the time for wearing the mask is prolonged correspondingly, and the problems of inconvenient carrying, uncomfortable wearing and the like are inevitable.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims to provide a portable mask with adjustable lacing tightness, which improves the installation mode of the lacing of the traditional mask, and can adjust the length of the lacing part at the hangers by pulling the lacing part between the adjacent through holes without adjusting the length of the lacing part by additionally arranging a fixed slide block; the lacing part pulled out can also be hung and sleeved at the neck of the wearer, so that the wearer can carry the lacing part conveniently.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a convenient to carry's gauze mask with adjustable frenulum elasticity, the gauze mask includes gauze mask base member and frenulum.
Two at least through-holes have been seted up to the first long limit department of gauze mask base member, frenulum one end is fixed in the long limit one end of second, and the frenulum other end wears to establish in proper order along the S-shaped be fixed in the other end on the long limit of second behind the through-hole, pull the frenulum length that the frenulum part between the adjacent through-hole is used for adjusting hangers department, pull the frenulum part of pulling out and hang the cover in person' S neck department of wearing.
Traditional gauze mask includes two frenulums that are fixed in gauze mask both sides minor face respectively, and frenulum length is fixed, unable adjustment, though there is the technical scheme who adjusts frenulum hangers department length through fixed slider at present, nevertheless need add fixed slider, and manufacturing cost is higher, can't be applicable to disposable surgery gauze mask, and still need take the gauze mask the back just can adjust, and fixed slider and the person's of wearing ear direct contact in addition inevitably cause the ear uncomfortable when wearing for a long time. The utility model improves the installation mode of the traditional mask lacing, only comprises one lacing, is fixed with the mask base body through the continuous S-shaped through holes, can adjust the length of the lacing part at the hangers by pulling the lacing part between the adjacent through holes, and does not need to adjust the length of the lacing part in a mode of additionally arranging the fixed slide block; the part of frenulum that pulls out the tear can also hang the cover in the person's neck department of wearing, when the person of wearing need not to wear temporarily, can directly take the gauze mask, because the part that the frenulum pulled out hangs the cover in person's neck department of wearing this moment, also need not to hold after taking, also can directly take if need wear once more, the person of being convenient for carries with oneself.
As the utility model relates to a preferred technical scheme, the gauze mask is under the wearing state, first long limit for being close to one side long limit of the lower jaw department of wearer, the long limit of one side long limit for being close to the bridge of the nose department of wearer of second.
As an optimal technical scheme of the utility model, the gauze mask is under the wearing state, the gauze mask base member include skin, filter layer and the inlayer that stacks gradually the setting from outer to interior, the inlayer contacts the person's of wearing face.
The inner layer and the outer layer are rectangles with the same size, and three side edges of the inner layer and three side edges of the outer layer are fixed relatively to form a bag-type mask base body with one side provided with a wide edge opening.
And a wrapping edge is arranged along the sewing edge of the mask base body.
As an optimal technical scheme of the utility model, fixed mode is ultrasonic wave pressfitting welding.
In a preferred embodiment of the present invention, the length of the inner layer and the outer layer is 140 to 180mm, for example, 140mm, 145mm, 150mm, 155mm, 160mm, 165mm, 170mm, 175mm or 180mm, but not limited to the above-mentioned values, and other values not listed in the above-mentioned range are also applicable.
The width of the inner and outer layers is 70 to 100mm, for example 70mm, 72mm, 74mm, 76mm, 78mm, 80mm, 82mm, 84mm, 86mm, 88mm, 90mm, 92mm, 94mm, 96mm, 98mm or 100mm, but is not limited to the values listed, and other values not listed in the range of values are also applicable.
As a preferred technical scheme of the utility model, first long limit department hug closely its border and offer first through-hole group and the second through-hole group that the symmetry set up, along the length direction of gauze mask base member, last position through-hole of first through-hole group and the first through-hole of second through-hole group between apart from 50 ~ 100mm, for example can be 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm or 100mm, but not only be limited to numerical value enumerated, other numerical values not enumerated in this numerical value range are equally suitable.
As a preferred technical solution of the present invention, each group of through holes includes at least two through holes, and the distance between two adjacent through holes in the same through hole group is 10-20 mm, for example, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm or 20mm, but not limited to the enumerated values, and other non-enumerated values in the numerical range are also applicable.
As an optimal technical scheme, along the length direction of gauze mask base member, frenulum one end is each through-hole that continuous S-shaped passed first through-hole group in proper order, reserves the frenulum partial length that supplies the person of wearing to drag after wearing out by the last position through-hole of first through-hole group, continues to wear to establish each through-hole of second through-hole group in proper order along continuous S-shaped.
It should be noted that the first through hole of the lace and the first through hole set alternatively passes through from the inner side to the outer side or from the outer side to the inner side, and then sequentially passes through along the continuous S-shape.
As an optimized technical scheme of the utility model, be provided with along length direction on the gauze mask base member and extend the fold.
As a preferred technical proposal of the utility model, the inner layer and the outer layer are both made of non-woven fabrics;
the material of the filter layer is melt-blown cloth.
The system refers to an equipment system, or a production equipment.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model improves the installation mode of the traditional mask lacing, only comprises one lacing, is fixed with the mask base body through the continuous S-shaped through holes, can adjust the length of the lacing part at the hangers by pulling the lacing part between the adjacent through holes, and does not need to adjust the length of the lacing part in a mode of additionally arranging the fixed slide block; the part of frenulum that pulls out the tear can also hang the cover in the person's neck department of wearing, when the person of wearing need not to wear temporarily, can directly take the gauze mask, because the part that the frenulum pulled out hangs the cover in person's neck department of wearing this moment, also need not to hold after taking, also can directly take if need wear once more, the person of being convenient for carries with oneself.
Drawings
Fig. 1 is a view showing a structure of a mask according to embodiment 1 of the present invention.
Wherein, 1-mask base body; 2-tying a lace; 3-a second long side; 4-a first long side; 5-a first group of through holes; 6-a second set of through holes; 7-stretching the pleats.
Detailed Description
It is to be understood that in the description of the present invention, the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly, and may for example be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The utility model provides a portable mask with adjustable frenulum elasticity, the mask is as shown in figure 1, and comprises a mask base body 1 and a frenulum 2. Two at least through-holes have been seted up in 4 departments on the first long limit of gauze mask base member 1, and 2 one ends in frenulum are fixed in the long limit of second 3 one ends, and the other end in frenulum 2 is worn to establish through-hole after-fixing in the long limit of second 3 other ends in proper order along the S-shaped, pulls 2 lengths in frenulum that the frenulum 2 part between the adjacent through-hole is used for adjusting hangers department, and the frenulum 2 part that pulls out hangs and overlaps in wearing person' S neck department.
Further, when the mask is worn, the first long side 4 is a long side close to the mandible of the wearer, and the second long side 3 is a long side close to the nose bridge of the wearer.
Gauze mask is under wearing the state, and gauze mask base member 1 includes outer, filter layer and the inlayer that stacks gradually the setting from outer to interior, and inlayer contact person of wearing is facial, and inlayer and outer material are the non-woven fabrics, and the material of filter layer is the melt-blown cloth. The inlayer and the skin are the rectangle that the size equals, and inlayer and outer length are 140 ~ 180mm, and inlayer and outer width are 70 ~ 100 mm. The three side edges of the inner layer and the three side edges of the outer layer are relatively fixed to form a bag-type mask base body 1 with one wide side opening, and optionally, the fixing mode is ultrasonic press welding. And a wrapping edge is arranged along the sewing edge of the mask base body 1.
The first long edge 4 is provided with a first through hole group 5 and a second through hole group 6 which are symmetrically arranged close to the edge of the first long edge, the distance between the last through hole of the first through hole group 5 and the first through hole of the second through hole group 6 is 50-100 mm along the length direction of the mask base body 1, and the lacing 2 part between the last through hole of the first through hole group 5 and the first through hole of the second through hole group 6 is pulled. The number of through holes contained in each group of through holes is equal and comprises at least two through holes, and the distance between every two adjacent through holes is 10-20 mm.
Furthermore, along the length direction of the mask base body 1, one end of the lace 2 sequentially penetrates through the through holes of the first through hole group 5 in a continuous S shape, the part of the length of the lace 2 pulled by the wearer is reserved after the last through hole of the first through hole group 5 penetrates out, and the lace continues to sequentially penetrate through the through holes of the second through hole group 6 in the continuous S shape.
The mask base body 1 is provided with extension folds 7 along the length direction.
Example 1
This embodiment provides a gauze mask with adjustable convenient lacing elasticity of wearing as shown in figure 1, the gauze mask include gauze mask base member 1 and frenulum 2, the gauze mask is under the wearing state, gauze mask base member 1 includes outer, filter layer and the inlayer of range upon range of setting in proper order from outer to inner, inlayer contact person of wearing facial, inlayer and outer material are the non-woven fabrics, the material of filter layer is for melt-blown cloth. The inner layer and the outer layer are rectangles with equal size, the length of the inner layer and the outer layer is 170mm, and the width of the inner layer and the outer layer is 80 mm. The three side edges of the inner layer and the three side edges of the outer layer are fixed relatively by ultrasonic wave pressing welding to form a bag-type mask base body 1 with one wide side opening. And a wrapping edge is arranged along the sewing edge of the mask base body 1.
In the worn state, the long side of the mask base 1 near the chin of the wearer is referred to as a first long side 4, and the long side near the nose bridge of the wearer is referred to as a second long side 3. A first through hole group 5 and a second through hole group 6 which are symmetrically arranged are arranged at the position, close to the edge of the first long edge 4, of the first long edge, and the distance between the last through hole of the first through hole group 5 and the first through hole of the second through hole group 6 is 50mm along the length direction of the mask base body 1. Every group of through holes all comprises 6 through holes, and the distance between every two adjacent through holes in the same through hole group is 10 mm.
Example 2
This embodiment provides a gauze mask with adjustable convenient lacing elasticity of wearing as shown in figure 1, the gauze mask include gauze mask base member 1 and frenulum 2, the gauze mask is under the wearing state, gauze mask base member 1 includes outer, filter layer and the inlayer of range upon range of setting in proper order from outer to inner, inlayer contact person of wearing facial, inlayer and outer material are the non-woven fabrics, the material of filter layer is for melt-blown cloth. The inlayer and the skin are the rectangle that the size equals, and the length of inlayer and skin is 180mm, and the width of inlayer and skin is 100 mm. The three side edges of the inner layer and the three side edges of the outer layer are fixed relatively by ultrasonic wave pressing welding to form a bag-type mask base body 1 with one wide side opening. And a wrapping edge is arranged along the sewing edge of the mask base body 1.
In the worn state, the long side of the mask base 1 near the chin of the wearer is referred to as a first long side 4, and the long side near the nose bridge of the wearer is referred to as a second long side 3. A first through hole group 5 and a second through hole group 6 which are symmetrically arranged are arranged at the position, close to the edge of the first long edge 4, of the first long edge, and the distance between the last through hole of the first through hole group 5 and the first through hole of the second through hole group 6 is 100mm along the length direction of the mask base body 1. Every group all includes 2 through-holes in the through-hole group, and is 20mm apart from between two adjacent through-holes in same through-hole group.
Example 3
This embodiment provides a gauze mask with adjustable convenient lacing elasticity of wearing as shown in figure 1, the gauze mask include gauze mask base member 1 and frenulum 2, the gauze mask is under the wearing state, gauze mask base member 1 includes outer, filter layer and the inlayer of range upon range of setting in proper order from outer to inner, inlayer contact person of wearing facial, inlayer and outer material are the non-woven fabrics, the material of filter layer is for melt-blown cloth. The inner layer and the outer layer are rectangles with equal size, the length of the inner layer and the outer layer is 140mm, and the width of the inner layer and the outer layer is 70 mm. The three side edges of the inner layer and the three side edges of the outer layer are fixed relatively by ultrasonic wave pressing welding to form a bag-type mask base body 1 with one wide side opening. And a wrapping edge is arranged along the sewing edge of the mask base body 1.
In the worn state, the long side of the mask base 1 near the chin of the wearer is referred to as a first long side 4, and the long side near the nose bridge of the wearer is referred to as a second long side 3. A first through hole group 5 and a second through hole group 6 which are symmetrically arranged are arranged at the position, close to the edge of the first long edge 4, of the first long edge, and the distance between the last through hole of the first through hole group 5 and the first through hole of the second through hole group 6 is 50mm along the length direction of the mask base body 1. Every group all includes 3 through-holes in the through-hole group, and is 15mm apart from between two adjacent through-holes in same through-hole group.
Example 4
This embodiment provides a gauze mask with adjustable convenient lacing elasticity of wearing as shown in figure 1, the gauze mask include gauze mask base member 1 and frenulum 2, the gauze mask is under the wearing state, gauze mask base member 1 includes outer, filter layer and the inlayer of range upon range of setting in proper order from outer to inner, inlayer contact person of wearing facial, inlayer and outer material are the non-woven fabrics, the material of filter layer is for melt-blown cloth. The inlayer and the skin are the rectangle that the size is equal, and the inlayer is 164mm with outer length, and the inlayer is 75mm with outer width. The three side edges of the inner layer and the three side edges of the outer layer are fixed relatively by ultrasonic wave pressing welding to form a bag-type mask base body 1 with one wide side opening. And a wrapping edge is arranged along the sewing edge of the mask base body 1.
In the worn state, the long side of the mask base 1 near the chin of the wearer is referred to as a first long side 4, and the long side near the nose bridge of the wearer is referred to as a second long side 3. The first long edge 4 is provided with a first through hole group 5 and a second through hole group 6 which are symmetrically arranged and close to the edge of the first long edge, and the distance between the last through hole of the first through hole group 5 and the first through hole of the second through hole group 6 is 60mm along the length direction of the mask base body 1. Every group of through holes all comprises 4 through holes, and the distance between every two adjacent through holes in the same through hole group is 13 mm.
Example 5
This embodiment provides a gauze mask with adjustable convenient lacing elasticity of wearing as shown in figure 1, the gauze mask include gauze mask base member 1 and frenulum 2, the gauze mask is under the wearing state, gauze mask base member 1 includes outer, filter layer and the inlayer of range upon range of setting in proper order from outer to inner, inlayer contact person of wearing facial, inlayer and outer material are the non-woven fabrics, the material of filter layer is for melt-blown cloth. The inlayer and the skin are the rectangle that the size equals, and the length of inlayer and skin is 180mm, and the width of inlayer and skin is 100 mm. The three side edges of the inner layer and the three side edges of the outer layer are fixed relatively by ultrasonic wave pressing welding to form a bag-type mask base body 1 with one wide side opening. And a wrapping edge is arranged along the sewing edge of the mask base body 1.
In the worn state, the long side of the mask base 1 near the chin of the wearer is referred to as a first long side 4, and the long side near the nose bridge of the wearer is referred to as a second long side 3. A first through hole group 5 and a second through hole group 6 which are symmetrically arranged are arranged at the position, close to the edge of the first long edge 4, of the first long edge, and the distance between the last through hole of the first through hole group 5 and the first through hole of the second through hole group 6 is 80mm along the length direction of the mask base body 1. Every group of through holes all comprises 5 through holes, and the distance between every two adjacent through holes in the same through hole group is 10 mm.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (10)
1. A portable mask with adjustable tying band tightness is characterized in that the mask comprises a mask base body and tying bands;
two at least through-holes have been seted up to the first long limit department of gauze mask base member, frenulum one end is fixed in the long limit one end of second, and the frenulum other end wears to establish in proper order along the S-shaped be fixed in the other end on the long limit of second behind the through-hole, pull the frenulum length that the frenulum part between the adjacent through-hole is used for adjusting hangers department, pull the frenulum part of pulling out and hang the cover in person' S neck department of wearing.
2. The mask of claim 1 wherein said first length is a length adjacent to the chin of the wearer and said second length is a length adjacent to the bridge of the nose of the wearer when the mask is worn.
3. The mask with the adjustable tightness of the straps according to claim 1, wherein the mask base comprises an outer layer, a filter layer and an inner layer which are sequentially stacked from outside to inside in a wearing state of the mask, and the inner layer contacts with the face of a wearer;
the inner layer and the outer layer are rectangles with the same size, and three side edges of the inner layer and three side edges of the outer layer are relatively fixed to form a bag-type mask base body with one side provided with a wide edge opening;
and a wrapping edge is arranged along the sewing edge of the mask base body.
4. The strap adjustable respirator of claim 3 wherein the three side edges of the inner layer and the outer layer are secured by ultrasonic compression welding.
5. The mask with the adjustable tightness of the straps according to claim 3, wherein the length of the inner layer and the outer layer is 140 to 180 mm;
the width of the inner layer and the outer layer is 70-100 mm.
6. The mask with the adjustable tightness of the tying belt according to claim 5, wherein the first long side is provided with a first through hole group and a second through hole group which are symmetrically arranged along the edge of the first long side, and the distance between the last through hole of the first through hole group and the first through hole of the second through hole group is 50-100 mm along the length direction of the mask base body.
7. The mask with the adjustable tightness and degree of tying belt according to claim 6, wherein each group of through holes comprises at least two through holes, and the distance between two adjacent through holes in the same group is 10-20 mm.
8. The mask according to claim 6, wherein one end of the strap is continuously S-shaped and sequentially passes through the through holes of the first through hole group, the length of the strap portion pulled by the wearer is reserved after the strap portion passes through the last through hole of the first through hole group, and the strap portion is continuously and sequentially passed through the through holes of the second through hole group along the continuous S-shape.
9. The mask with adjustable strap tightness according to claim 1, wherein the mask base is provided with stretch folds along the length direction.
10. The strap tension adjustable mask according to claim 3, wherein the inner and outer layers are made of non-woven fabric;
the material of the filter layer is melt-blown cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021849005.9U CN213215473U (en) | 2020-08-28 | 2020-08-28 | Convenient to carry's gauze mask with adjustable frenulum elasticity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021849005.9U CN213215473U (en) | 2020-08-28 | 2020-08-28 | Convenient to carry's gauze mask with adjustable frenulum elasticity |
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| Publication Number | Publication Date |
|---|---|
| CN213215473U true CN213215473U (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021849005.9U Active CN213215473U (en) | 2020-08-28 | 2020-08-28 | Convenient to carry's gauze mask with adjustable frenulum elasticity |
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| Country | Link |
|---|---|
| CN (1) | CN213215473U (en) |
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- 2020-08-28 CN CN202021849005.9U patent/CN213215473U/en active Active
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