WO2020103656A1 - Nouveau masque de protection étanche à l'air - Google Patents

Nouveau masque de protection étanche à l'air

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Publication number
WO2020103656A1
WO2020103656A1 PCT/CN2019/114279 CN2019114279W WO2020103656A1 WO 2020103656 A1 WO2020103656 A1 WO 2020103656A1 CN 2019114279 W CN2019114279 W CN 2019114279W WO 2020103656 A1 WO2020103656 A1 WO 2020103656A1
Authority
WO
WIPO (PCT)
Prior art keywords
mask body
mask
airtight
protective mask
new
Prior art date
Application number
PCT/CN2019/114279
Other languages
English (en)
Chinese (zh)
Inventor
郑永柱
郑乾锋
郑羽良
Original Assignee
华新医材股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华新医材股份有限公司 filed Critical 华新医材股份有限公司
Priority to US17/294,546 priority Critical patent/US20210401079A1/en
Publication of WO2020103656A1 publication Critical patent/WO2020103656A1/fr

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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
    • 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
    • A41D13/1115—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a horizontal pleated pocket
    • 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
    • A41D13/0002—Details of protective garments not provided for in groups A41D13/0007 - A41D13/1281
    • 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
    • A41D13/1161—Means for fastening to the user's head

Definitions

  • the present invention relates to a mask, in particular to a new airtight protective mask.
  • the efficiency of filtering dust and haze (PM2.5) is only about 60%, and the overall protection effect is about 40.6% when taking into account the air leakage rate. Due to the progress of production technology in recent years, the salt mist filtration efficiency of N95 dust masks can reach more than 99%. But good masks need to have the characteristics of good adhesion and low pressure difference, but the pressure difference (respiration resistance) of N95 series masks is quite high, which is not suitable for long-term wear, especially the three groups cannot be used, such as children , Pregnant women and people with weak lungs, even if the dust is very serious, they are not suitable for wearing.
  • the patent document with the patent publication number TW201526945A discloses a mask A3 including a mask body A10, and ear hook portions A12 formed at both ends of the mask body A10 in the lateral direction, and formed A plurality of strip-shaped creases A14, a plurality of strip-shaped creases A14 are fixed by a welded portion A22 formed by heat sealing, the welded portions A22 are on both sides in the lateral direction of the mask body A10 and equally spaced in the longitudinal direction of the mask body A10 A linear shape is formed, and the distance between adjacent welding portions A22 is 3 mm (millimeter) or more.
  • a side block A32 covering the gap between the face and the mask body A10 is provided at both ends in the lateral direction of the mask body A10 in contact with the side of the wearer's face.
  • the side block A32 is formed by sandwiching one end of the wide-band side insulating tape A31 between the mask body A10 and the side band A30 so that the side of the mask body A10 closely adheres to the face, which can suppress the mask body A10 There is a gap between the face and the micro-particles to prevent intrusion into the mask.
  • the mask side block A32 is formed by welding the upper and lower ends of the side insulating tape 31 to the first mesh seal A17 and the second mesh seal A24, respectively, and fixing the upper and lower sides of the mask body A10. Then, the side tape A30 covers the side insulating tape A31 and the mask body A10 and is welded. Therefore, its molding steps are many and the manufacturing process is complicated. In addition, the side tape A30 covering the side insulating tape A31 and the mask body A10 side will also cause the waste of the mask raw materials and increase the production cost.
  • the object of the present invention is to provide a new air-tight protective mask, which is formed by covering the side of the mask body with the air-tight sheet and fixed on the outer layer and the inner layer at a time, so the manufacturing, the structure is simple, and the production cost low.
  • Another object of the present invention is to provide a new airtight protective mask, which uses L-shaped upper and lower fixing areas to weld the lanyard. The problem of living.
  • a new gas-tight protective mask characterized in that it includes: a mask body, which is provided with at least one outer layer, a middle layer and an inner layer in sequence;
  • the dense pieces are respectively fixed on both sides of the mask body, and each of the airtight pieces includes a fixing portion and a sealing portion extending from the fixing portion, the fixing portion is wrapped around the mask body
  • One side is fixedly connected to the outer layer and the inner layer, and the adhesion part is arranged in a direction corresponding to the inner layer;
  • two fixing area groups each of the fixing area groups are connected to the
  • the fixing area group includes an upper fixing area and a lower fixing area, and the upper and lower fixing areas respectively correspond to the upper and lower ends of the sealing portion and are welded to the mask body ;
  • a lanyard set including two lanyards, the two lanyards are respectively connected to both sides of the mask body.
  • the airtight sheet has a single-layer or multi-layer structure.
  • the wrinkle cross-section of the mask body is omega or zigzag.
  • the lanyard set is located on the outer layer or the inner layer, and is arranged toward the inside of the mask body.
  • the airtight protective mask further includes an upper airtight sheet fixedly connected to the upper side of the mask body.
  • the airtight protective mask further includes a lower airtight sheet fixedly attached to the lower side of the mask body.
  • the mask body is formed with two longitudinal folds.
  • the airtight protective mask further includes an exhalation valve, which is installed on the mask body.
  • the airtight protective mask further includes an embedded nose pad, which is disposed between the inner layer and the outer layer on the upper part of the mask body.
  • the face of the mask fits the shape of the face.
  • the left and right sides of the mask are closely attached to the bottom and face, and the contact surface is evenly distributed around the mouth and nose, reducing the generation of gaps, preventing dust and particles from drilling through the gap, greatly improving the tightness of the mask, and wearing it more safely and comfortably.
  • the upper anti-fog and air-tight film is pasted, and the area is increased to effectively block the upward fog and prevent the lens from fogging.
  • the built-in nose bridge bead structure is close to the nose bridge to effectively prevent dust and particles from drilling through the gap of the nose bridge. 4.
  • Soft ear lanyard comfortable wearing on ears.
  • the double-folded ⁇ three-dimensional structure keeps the mask and the lips at a certain distance. There is no obstruction when breathing, maintain a comfortable mouth and nose space, and reduce the feeling of stuffiness and discomfort. 6.
  • Special diamond three-dimensional structure comfortable and beautiful to wear. Don't stick to your nose and mouth when wearing, so that you can breathe smoothly, speak naturally, without sticking your lips, and maintain a perfect face. 7.
  • the filtering efficiency of the airtight sheet can reach more than 95%, effectively blocking more than 95% of the particles in the air less than 0.1 ⁇ m (ie unit: micrometer). It can also be applied to N95 grade anti-haze masks. In addition, depending on the filter material of the mask, the airtight film can be matched with the N95 / N99 / N100 series of American dust masks, the EU FFP1 / FFP2 / FFP3 series or other specifications of the same level. 9. It can effectively prevent pollen, high-density dust, sand and smog pollution and other harmful substances from inhaling, effectively resist PM 2.5, and isolate 99.9% of germs and air particles. It is suitable for countermeasures such as cold, sneezing, flu, pollen, etc. It is the first choice for fog and haze.
  • FIG. 1 is a front view of a new airtight protective mask in Embodiment 1.
  • FIG. 1 is a front view of a new airtight protective mask in Embodiment 1.
  • FIG. 2 is a rear view of a new airtight protective mask in Embodiment 1.
  • FIG. 2 is a rear view of a new airtight protective mask in Embodiment 1.
  • Fig. 3 is a cross-sectional view taken along A-A in Fig. 2.
  • FIG. 4 is a cross-sectional view along B-B in FIG. 2.
  • FIG. 5 is a schematic diagram of a user wearing a new airtight protective mask in Embodiment 1.
  • FIG. 5 is a schematic diagram of a user wearing a new airtight protective mask in Embodiment 1.
  • FIG. 6 is a schematic structural diagram of a new airtight protective mask in Embodiment 2.
  • FIG. 6 is a schematic structural diagram of a new airtight protective mask in Embodiment 2.
  • FIG. 7 is a schematic structural view of a new airtight protective mask in Embodiment 3.
  • FIG. 7 is a schematic structural view of a new airtight protective mask in Embodiment 3.
  • FIG. 8 is a schematic structural diagram of a new airtight protective mask in Example 4.
  • FIG. 8 is a schematic structural diagram of a new airtight protective mask in Example 4.
  • FIG. 9 is a front view of a new airtight protective mask in Embodiment 5.
  • FIG. 9 is a front view of a new airtight protective mask in Embodiment 5.
  • FIG. 10 is a rear view of a new airtight protective mask in Example 5.
  • FIG. 10 is a rear view of a new airtight protective mask in Example 5.
  • Fig. 11 is a cross-sectional view taken along C-C in Fig. 10.
  • FIG. 12 is a schematic structural view of a new airtight protective mask in Example 6.
  • FIG. 12 is a schematic structural view of a new airtight protective mask in Example 6.
  • FIG. 13 is a schematic structural view of a new airtight protective mask in Example 7.
  • FIG. 14 is a cross-sectional view along D-D in FIG. 13.
  • FIG. 15 is a schematic structural view of a new airtight protective mask in Example 8.
  • FIG. 15 is a schematic structural view of a new airtight protective mask in Example 8.
  • FIG. 16 is a schematic structural view of a new airtight protective mask in Example 9.
  • FIG. 16 is a schematic structural view of a new airtight protective mask in Example 9.
  • Example 17 is a schematic structural view of a new airtight protective mask in Example 10.
  • Example 18 is a schematic structural view of a new airtight protective mask in Example 11.
  • Fig. 19 is a cross-sectional view taken along E-E in Fig. 18.
  • Example 20 is a schematic structural view of a new airtight protective mask in Example 12.
  • FIG. 21 is a schematic structural view of a new airtight protective mask in Embodiment 13.
  • FIG. 22 is a schematic structural view of a new airtight protective mask in Example 14.
  • FIG. 22 is a schematic structural view of a new airtight protective mask in Example 14.
  • Fig. 23 is a perspective view of a mask in the prior art.
  • Figure 23 A3-mask in the prior art; A10-mask body; A12-ear hanging part; A14-crease; A22-welding part; A30-side band; A32-side block; A31-side insulating tape ; A17-first grid seal, A24-second grid seal.
  • the present invention provides a new airtight protective mask, including a mask body 10, an airtight sheet 20, a fixed area group 30, and a lanyard group 40; the description is as follows:
  • the mask body 10 is formed with a plurality of horizontal pleats 16, and at least one outer layer 11, a middle layer 13 and an inner layer 15 are provided in this order.
  • the outer layer 11 may be a water-repellent layer, such as a water-repellent non-woven fabric (or a non-woven fabric with water-repellent function), to prevent the penetration of moisture and liquid.
  • the middle layer 13 may be a filter layer, such as an electrostatic high-density melt-blown non-woven fabric (or an electrostatic high-density melt-blown non-woven fabric) to block dust and viruses.
  • the inner layer 15 may be a hydrophilic layer such as a hydrophilic ultra-fine composite fiber non-woven fabric (or a hydrophilic ultra-fine composite fiber non-woven fabric), which is soft and comfortable, and effectively absorbs moisture.
  • the horizontal wrinkle 16 of the mask body 10 has an ⁇ -shaped cross-section (as shown in FIG. 4), and the double-wrinkle ⁇ three-dimensional structure can keep the mask and the lips at a certain distance, without any obstruction when breathing, and maintain a comfortable mouth and nose space To reduce feeling of boredom and discomfort.
  • each airtight sheet 20 includes a fixing portion 21 and a sealing portion 23 extending from the fixing portion 21 (as shown in FIG. 3),
  • the fixing portion 21 is coated on the side of the mask body 10 and fixed to the outer layer 11 and the inner layer 15, and the adhesion portion 23 is arranged corresponding to the direction of the inner layer 15.
  • the airtight sheet 20 is a separable or composite nonwoven fabric with a two-layer structure, which is composed of two layers of spunbond and meltblown nonwoven fabric (or nonwoven fabric) (Spunbond + Meltblown Nonwovens, SM), which is spunbonded Composite products with meltblown. This will filter out dust, particles, and dirty air from both sides of the mask.
  • each fixed area group 30 connects the airtight sheet 20 and the mask body 10
  • the fixed area group 30 includes an upper fixed area 31 and a lower fixed area 33, an upper fixed area 31, a lower fixed area 33 respectively welded to the mask body 10 corresponding to the upper and lower ends of the adhesion part 23.
  • the hanging strap set 40 includes two hanging straps 41 (such as ear straps), which can be fixed on the left and right sides of the mask body 10 in an ear-hanging type, wherein one end of the strap 41 is fixed to the upper end of the mask body 10, and the other One end is fixed to the lower end.
  • the strap 41 can be an ear strap, a strap or a head strap, but it is not limited thereto.
  • FIG. 5 When the user wears the present invention, as shown in FIG. 5. Please hold the mask first and unfold the fold to form a body space.
  • the nose piece 19 is outward, and the ear strap is put on so that the mask completely covers the nose, nose and chin.
  • the sealing portion 23 of the airtight sheet 20 can be opened and closely adhered to the face, so as to reduce the generation of gaps, prevent dust and particles from drilling through the gaps, greatly improve the mask tightness, and make wearing more safe and comfortable.
  • the airtight sheet 20 is wrapped on the side of the mask body 10 and fixed on the outer layer 11 and the inner layer 15 to be formed at a time, the manufacturing process and structure are simple and the production cost is low.
  • Embodiment 2 is a preferred embodiment of the present invention.
  • the airtight protective mask may further include an upper airtight sheet 50 or anti-fog gas.
  • the adhesive patch is fixed on the upper side of the mask body 10. Therefore, increasing the area effectively blocks the mist upwards and prevents the lens from fogging, and can also achieve the same functions and effects as the above.
  • Embodiment 3 is a preferred embodiment of the present invention.
  • the air-tight protective mask may further include a lower air-tight sheet 60, which is fixed to The lower side of the mask body 10. Therefore, it can effectively fill the gap between the chin and the mask, making the mask more completely close to the face shape.
  • Embodiment 4 is a preferred embodiment of the present invention.
  • This Embodiment 4 differs from the foregoing embodiments in that the airtight protective mask may further include an upper airtight sheet 50 and a lower airtight The sheet 60 is fixed to the upper and lower sides of the mask body 10 respectively.
  • the functions and effects of FIG. 6 and FIG. 7 in the foregoing embodiment are achieved.
  • Embodiment 5 is a preferred embodiment of the present invention.
  • This embodiment 5 differs from the foregoing embodiments in that the mask body 10 is formed with two longitudinal folds 17 ( (As shown in Figure 11). Therefore, when the mask body 10 is unfolded, a special diamond three-dimensional structure can be formed, which makes the wearing comfortable and beautiful, and does not stick to the mouth and nose when wearing, smooth breathing, natural speaking, and no lip print, can maintain a perfect face.
  • Embodiment 6 is a preferred embodiment of the present invention.
  • This Embodiment 6 differs from the foregoing embodiments in that the gas-tight protective mask further includes an exhalation valve 70, which is installed in the mask body 10 on. Therefore, there is no feeling of blockage when breathing, which can maintain a comfortable mouth and nose space and reduce breathlessness and discomfort.
  • Embodiment 7 is a preferred embodiment of the present invention.
  • the airtight protective mask further includes an embedded nose pad 80 or Nose bridge bead structure, embedded in the upper part of the mask body 10 (as shown in FIG. 14), the embedded nose pad 80 includes a nose bridge 81 and an elastic body 83, the nose bridge 81 is composed of a plastic part 812 and its coated iron wire 811, elastic
  • the body 83 may be, for example, foam. Therefore, the built-in nose pad 80 or nose bridge bead structure can closely adhere to the nose bridge, effectively preventing dust and particles from drilling into the gap of the nose bridge.
  • Embodiment 8 is a preferred embodiment of the present invention.
  • This Embodiment 8 is different from the foregoing embodiments in that the airtight sheet 20 is separable using a three-layer or four-layer structure.
  • composite non-woven fabric consisting of spunbond and melt-blown and spunbond non-woven fabric (or non-woven fabric) a total of three layers (Spunbond + Meltblown + Spunbond Nonwovens, SMS) or four layers (Spunbond + Meltblown + Meltblown + Spunbond Nonwovens, SMMS) is a composite product of spunbond and meltblown. This will filter out dust, particles, and dirty air from both sides of the mask.
  • the airtight sheet 20 may also adopt a five-layer structure, that is, SMMS plus an antibacterial layer.
  • Embodiment 9 is a preferred embodiment of the present invention.
  • This Embodiment 9 differs from the foregoing embodiments in that the strap set 40 is located on the outer layer 11 and faces the inside of the mask body 10 Orientation (form the inner ear hook), thus increasing the convenience on the mask packaging.
  • the upper and lower fixing regions 31 and 33 respectively having an L shape are used to weld the hanging strap 41, which is characterized in that when the two ends of the hanging strap 41 are welded, the problem that the entire end of the hanging strap 41 is welded can be avoided.
  • Embodiment 10 is a preferred embodiment of the present invention.
  • the difference between this embodiment 10 and the previous embodiments is that the strap set 40 is located on the inner layer 15 and faces the inside of the mask body 10 Orientation (form the inner ear hook), thus increasing the convenience on the mask packaging.
  • embodiment 11 is a preferred embodiment of the present invention.
  • This embodiment 11 differs from the foregoing embodiments in that the horizontal fold 16 of the mask body 10 has a zigzag cross section ( (As shown in Figure 19). It can be applied to the masks of the traditional traditional pleating method.
  • Embodiment 12 is a preferred embodiment of the present invention.
  • the airtight sheet 20 is a non-woven fabric with a single-layer structure, which can be Spunbond Nonwovens (Spunbond Nonwovens), or Meltblown Nonwovens (Meltblown Nonwovens). This will filter out dust, particles, and dirty air from both sides of the mask.
  • Embodiment 13 is a preferred embodiment of the present invention.
  • the strap set 40 includes at least two straps 43, each strap 43 are respectively fixed along the left side and the right side of the mask body 10, and both ends of the mask body 10 extend outside the outlet mask body 10.
  • the length of the strap 43 may preferably be between 40 and 95 cm.
  • the strap 43 can be tied to the head for fixing.
  • Embodiment 14 is a preferred embodiment of the present invention.
  • the strap set 40 includes at least two straps 43, each strap 43 are respectively fixed along the upper side and the lower side of the mask body 10, and both ends of the mask body 10 extend beyond the outlet mask body 10.
  • the length of the strap 43 may preferably be between 40 and 95 cm. When in use, the strap 43 can be tied to the head for fixing.
  • the airtight sheet 20 may also be provided with an activated carbon layer, which can absorb ozone and organic odors. Or use airtight materials or adhesive films to block dust, particles and dirty air from the sides of the mask.
  • the invention can effectively prevent pollen, high-density dust, sand dust and smog pollution and other harmful substances from inhaling, and effectively resists PM 2.5, which is an essential first choice for smog weather. It is also suitable for countermeasures such as cold, sneezing, flu, pollen, etc., and for preventing infections in offices, on MRT, buses, or in hospitals.
  • the present invention has the following characteristics: the airtight sheet 20 is wrapped on the side of the mask body 10 and fixed on the outer layer 11 and the inner layer 15 for one-time molding, so the production, the structure is simple, and the production low cost.
  • the present invention has other characteristics: the left and right sides of the mask, the bottom edge and the upper side and the face are closely attached, and the tightness of the mask is greatly improved.
  • the double-wrinkle ⁇ three-dimensional structure keeps the mask and lips at a certain distance. There is no obstruction during breathing, which can maintain a comfortable mouth and nose space and reduce breathlessness and discomfort.
  • the soft ear lanyard makes the ears comfortable to wear, and the ears are not easy to feel pain and discomfort when worn for a long time.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

L'invention concerne un nouveau masque de protection étanche à l'air comprenant : un corps de masque (10) pourvu consécutivement d'au moins une couche externe (11), d'une couche intermédiaire (13) et d'une couche interne (15); au moins deux feuilles étanches à l'air (20) fixées respectivement sur deux côtés du corps de masque (10), chaque feuille étanche à l'air (20) comprenant une partie de fixation (21) et une partie à ajustement serré (23) s'étendant hors de la partie de fixation (21), la partie de fixation (21) recouvrant un côté du corps de masque (10) et étant reliée de manière fixe à la couche externe (11) et à la couche interne (15), et la partie à ajustement serré (23) étant disposée dans la direction de la couche interne correspondante (15); deux blocs de fixation (30), chaque bloc de fixation (30) étant relié à la feuille étanche à l'air (20) et au corps de masque (10), et le bloc de fixation (30) comprenant une région de fixation supérieure (31) et une région de fixation inférieure (32), les régions de fixation supérieure et inférieure (31, 32) étant soudées au corps de masque (10) correspondant respectivement aux extrémités supérieure et inférieure de la partie à ajustement serré (23); et un groupe de cordons (40) comprenant deux cordons (41), les deux cordons (41) étant respectivement reliés aux deux côtés du corps de masque (10). La feuille étanche à l'air (20) recouvre un côté du corps de masque (10) et est reliée de manière fixe à la couche externe (11) et à la couche interne (15), de sorte que le masque de protection puisse être formé en une seule étape et, ainsi, la fabrication et la structure sont simples, et les coûts de production sont faibles.
PCT/CN2019/114279 2018-11-20 2019-10-30 Nouveau masque de protection étanche à l'air WO2020103656A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/294,546 US20210401079A1 (en) 2018-11-20 2019-10-30 Novel airtight protective mask

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201821908473.1U CN209202201U (zh) 2018-11-20 2018-11-20 一种新气密防护口罩
CN201821908473.1 2018-11-20

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WO2020103656A1 true WO2020103656A1 (fr) 2020-05-28

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US (1) US20210401079A1 (fr)
CN (1) CN209202201U (fr)
WO (1) WO2020103656A1 (fr)

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CN209202201U (zh) * 2018-11-20 2019-08-06 华新医材股份有限公司 一种新气密防护口罩
CN109633912A (zh) * 2019-01-18 2019-04-16 王衍璞 挂耳式投屏设备及投屏系统
CN111802730A (zh) * 2020-07-20 2020-10-23 陈康平 高密封性可扩展高密封性可扩展防病毒口罩
CN112137201A (zh) * 2020-09-29 2020-12-29 张家港世恒实业有限公司 一种加固型防护口罩及其加工方法
WO2022083500A1 (fr) * 2020-10-22 2022-04-28 邱萍 Masque cloisonné à ajustement par le nez
CN113147066A (zh) * 2020-12-31 2021-07-23 紫罗兰家纺科技股份有限公司 一种减少医用口罩侧面泄漏的制作方法
WO2022170463A1 (fr) * 2021-02-09 2022-08-18 江苏盛纳凯尔医用科技有限公司 Masque facial
CN112806642B (zh) * 2021-02-09 2023-12-22 江苏盛纳凯尔医用科技有限公司 口罩
US20220369734A1 (en) * 2021-05-24 2022-11-24 Brian Kennedy Fogless face mask

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