WO2021212830A1 - Dispositif de protection respiratoire - Google Patents

Dispositif de protection respiratoire Download PDF

Info

Publication number
WO2021212830A1
WO2021212830A1 PCT/CN2020/131880 CN2020131880W WO2021212830A1 WO 2021212830 A1 WO2021212830 A1 WO 2021212830A1 CN 2020131880 W CN2020131880 W CN 2020131880W WO 2021212830 A1 WO2021212830 A1 WO 2021212830A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
hot
protection device
mask body
air cotton
Prior art date
Application number
PCT/CN2020/131880
Other languages
English (en)
Chinese (zh)
Inventor
李成
常欢
唐磊
陈平绪
谢湘
王鹏
叶南飚
袁志敏
Original Assignee
金发科技股份有限公司
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 金发科技股份有限公司 filed Critical 金发科技股份有限公司
Publication of WO2021212830A1 publication Critical patent/WO2021212830A1/fr

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/10—Respiratory apparatus with filter elements
    • 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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/06—Mouthpieces; Nose-clips

Definitions

  • the invention relates to the field of medical protection devices, in particular to a respiratory protection device.
  • Respiratory protection device (English: respirator or mask, also known as mask) is a device worn on the nose and mouth to filter the air in and out of the nose, so as to block harmful gases, odors, and droplets from entering and leaving the wearer's nose and mouth. It is made of gauze or paper, which has a certain filtering effect on the air entering the lungs. When respiratory infectious diseases are prevalent, when working in dust and other polluted environments, wearing respiratory protection devices has a very good effect.
  • Existing respiratory protection devices such as medical masks (such as KN95 or N95 masks), etc., mainly filter and block the two layers of meltblown cloth barrier layers in the middle. Therefore, if it is necessary to improve the barrier properties, the main It is achieved by increasing the density or thickness of the barrier layer of the meltblown cloth, but this will affect the air permeability and cause a feeling of suffocation during wearing, which greatly affects the comfort of use; and if the density (or thickness) of the filter layer of the respiratory protection device is reduced, Although the breathability can be improved, the barrier property will be severely affected, making the mask unable to have both breathability and barrier properties.
  • the present invention proposes a respiratory protection device, by arranging a hot-air cotton layer between two melt-blown cloth filter layers on the mask body, and the hot-air cotton layer is relatively fluffy, and an approximately parallel interval is formed between the two melt-blown cloth filter layers ,
  • the air can move freely between the two meltblown cloth filter layers, so that the air can be transmitted at any point on the surface of the inner and outer meltblown cloth filter layers, which combines with the meltblown cloth filter layer to make the respiratory protection device It not only has excellent barrier properties, but also reduces the pressure drop inside and outside the respiratory protection device during use, and the ventilation comfort during use can be effectively improved.
  • the present invention proposes the following specific embodiments:
  • the embodiment of the present invention provides a respiratory protection device, including: a mask body, a nasal bridge connecting the mask body, left ears, and right ears; the mask body is sequentially provided with a first non-woven fabric from the outside to the inside Layer, an intermediate filter layer, and a second non-woven fabric layer; the intermediate filter layer is sequentially provided with a first melt blown cloth filter layer, a hot air cotton layer, and a second melt blown cloth filter layer from the outside to the inside; The edges of the woven fabric layer, the intermediate filter layer and the second non-woven fabric layer are all fixedly connected; the left side of the mask body is connected to the left ear, and the right side of the mask body is connected to the right hook Ear.
  • the thickness of the hot-air cotton layer is between 0.03-1.2mm; when the width of the hot-air cotton used in the hot-air cotton layer is between 150-650mm, the allowable width deviation is ⁇ Between 7mm; the unit area mass of the hot-air cotton layer is between 12-120g/m2 and the deviation rate is between ⁇ 11%.
  • the unit area mass of the hot-air cotton layer is between 30-70 g/m2 and the deviation rate is between ⁇ 10%.
  • the unit area mass of the hot-air cotton layer is between 45-60 g/m2 and the deviation rate is between ⁇ 10%.
  • a solid net is further provided on the outside of the hot-air cotton layer, and the solid net is made of a resin containing a cross-linked copolymer of butyl acrylate and methyl methacrylate.
  • the porosity of the hot-air cotton layer is greater than the porosity of the first melt blown cloth filter layer and the porosity of the second melt blown cloth filter layer.
  • the nose bridge rib is a long metal wave sheet, and the wave part of the metal wave sheet extends along the length direction.
  • it further includes: a flexible conduit, one or more of the flexible conduits are sheathed on the left hanging ear and slidably connected to the left hanging ear; one or more of the flexible conduits It is sleeved on the right hanging ear and slidably connected with the right hanging ear.
  • it further includes: a seal, the bottom of the seal is connected to the inner side of the bottom of the mask body, the left end of the seal is connected to the left end of the mask body, and the The right end is connected with the right end of the mask body, and the top of the seal is away from the mask body.
  • an embodiment of the present invention proposes a respiratory protection device, comprising: a mask body, a nasal bridge connected to the mask body, left ears, and right ears; the mask body is sequentially provided with first ears from the outside to the inside.
  • the edges of the first non-woven fabric layer, the intermediate filter layer and the second non-woven fabric layer are all fixedly connected; the left side of the mask body is connected to the left ear, and the right side of the mask body is connected to the Describe the right mounting ear.
  • the hot-air cotton layer By placing a hot-air cotton layer between the two melt-blown cloth filter layers on the mask body, the hot-air cotton layer is relatively fluffy, and an approximately parallel interval is formed between the two melt-blown cloth filter layers, and the air can be filtered by the two melt-blown cloth filters.
  • the layers move freely, so that air can be transmitted at any point on the surface of the inner and outer meltblown cloth filter layers, which combined with the meltblown cloth filter layer of its own, makes the respiratory protection device not only has excellent barrier properties, but also The pressure drop inside and outside the respiratory protection device during use is adjusted, and the ventilation comfort during use can be effectively improved.
  • Fig. 1 is a schematic structural diagram of a respiratory protection device proposed by an embodiment of the present invention
  • Figure 2 is a schematic structural diagram of a respiratory protection device proposed by an embodiment of the present invention.
  • Figure 3 is a schematic structural diagram of a respiratory protection device proposed by an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a respiratory protection device proposed by an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a multilayer structure of a mask body of a respiratory protection device according to an embodiment of the present invention.
  • Fig. 6 is a schematic structural diagram of a respiratory protection device proposed by an embodiment of the present invention.
  • Embodiment 1 of the present invention discloses a respiratory protection device, as shown in Figs. 1-6, comprising: a mask body 1, a nasal bridge 4 connected to the mask body 1, a left hanging ear 2, a right hanging ear 3;
  • the mask body 1 is sequentially provided with a first non-woven fabric layer 11, an intermediate filter layer 12, and a second non-woven fabric layer 13 from the outside to the inside;
  • the intermediate filter layer 12 is sequentially provided with a first meltblown fabric layer from the outside to the inside Cloth filter layer 121, hot-air cotton layer 122, second meltblown cloth filter layer 123; the edges of the first non-woven fabric layer 11, the intermediate filter layer 12 and the second non-woven fabric layer 13 are all fixedly connected
  • the left side of the mask body 1 is connected to the left ear 2, and the right side of the mask body 1 is connected to the right ear 3.
  • the left ear hanger 2 and the right ear hanger 3 realize the fixation of the mask body 1 on the face.
  • the mask body 1 is used to cover the mouth and nose of the wearer. In order to ensure the tightness, it can further cover the wearer's
  • the chin by providing the bridge of the nose 4, specifically, the bridge of the nose 4 can be set between the first non-woven fabric layer 11 and the second non-woven fabric layer 13 at a position corresponding to the bridge of the wearer’s nose, or it can be set On the outer surface of the mask body 1; when wearing a respiratory protection device, you can press the bridge of the nose 4 to make it fit the bridge of the nose, thereby reducing gaps and ensuring airtightness, so that the air breathed by the wearer passes through the mask body 1 as much as possible filtered.
  • the bridge of the nose ribs 4 may be configured as a long metal wave sheet, and the wave portion of the metal wave sheet extends along the length direction.
  • the structural design based on the undulating part facilitates the bending of the bridge of the nose ribs 4, and facilitates its pressing and fitting to the bridge of the nose of the wearer.
  • the edges of the first non-woven fabric layer 11, the intermediate filter layer 12, and the second non-woven fabric layer 13 are all fixedly connected, and in this solution, the mask body 1 is provided with
  • the middle filter layer 12 is provided with a first melt-blown cloth filter layer 121, a hot-air cotton layer 122, and a second melt-blown cloth filter layer 123, so that the hot-air cotton layer 122 is provided in the mask body 1, and the hot air
  • the cotton layer 122 has the characteristic of being fluffy.
  • the hot-air cotton layer 122 can form an approximately parallel interval between the two melt blown cloth filter layers. The air can move freely between the two melt blown cloth filter layers, so that the air can be in the inner and outer layers.
  • Comparative example 1 corresponds to a medical KN95 respiratory protection device without hot-air cotton layer 122 and a double-layer meltblown cloth filter layer;
  • Comparative Example 2 is a medical KN95 respiratory protection device with no hot-air cotton layer 122 and a thickened double-layer meltblown cloth filter layer (thickening degree is 1.2 times that of a general meltblown cloth filter layer);
  • Comparative Example 3 is a disposable respiratory protection device with a single-layer meltblown cloth filter layer
  • the test includes ventilation resistance test and filtration efficiency test (that is, filtration efficiency test).
  • the ventilation resistance test test is based on GB2626-2006, and the filtration efficiency is tested according to GB2626-2006.
  • the test comparison results are shown in Table 1:
  • both the exhalation resistance and the inhalation resistance of Example 1 of the present scheme are less than those of Comparative Example 1 and Comparative Example 2 with a double-layer meltblown cloth filter layer, especially far less than those with a thickened double layer.
  • Comparative Example 2 of the layer of meltblown cloth filter layer the exhalation resistance or inspiratory resistance of Example 1 is only greater than that of the disposable respiratory protection device with only a single layer of double layer meltblown cloth filter layer, but the single-layer disposable respiratory protection device The filter efficiency of the filter is too low, and the comparison is not of practical significance. This shows that the respiratory protection device corresponding to this embodiment 1 has good air permeability and is not easy to produce stuffiness when worn.
  • Example 1 of this scheme is comparable to that of the general KN95 medical respiratory protection device and the thicker version of the KN95 respiratory protection device, and far exceeds that of a disposable single layer. Medical respiratory protection device.
  • the test also includes a comfort test, which is based on GB/T 23465-2009. In the specific comfort test, 10 subjects are randomly selected, including 5 males and 5 females, who wear respiratory protection devices. Subjective evaluation of comfort is performed, and the comparative ratio still adopts the comparative ratio of the above test, and the corresponding results are shown in Table 2:
  • Example 1 of this solution has a greater improvement, especially far exceeding the ordinary KN95 respiratory protection with a double-layer meltblown cloth filter layer.
  • KN95 respiratory protection device with double-layer thick meltblown cloth filter layer KN95 respiratory protection device with double-layer thick meltblown cloth filter layer.
  • Embodiment 2 of the present invention discloses a respiratory protection device. Based on Embodiment 1, this embodiment also limits the thickness of the hot-air cotton layer 122 to be between 0.03-1.2 mm; the hot-air cotton layer 122 is used When the width of the hot-air cotton is between 150-650mm, the allowable width deviation is between ⁇ 7mm (the smaller the allowable width deviation is, the better); the unit area mass of the hot-air cotton layer 122 is 12-120g/m2 And the deviation rate is between ⁇ 11% (the smaller the deviation, the better). Based on the comparative example and test environment tested in Example 1, the test comparison results are shown in Table 3:
  • Embodiment 3 of the present invention discloses a respiratory protection device.
  • the thickness of the hot-air cotton layer 122 can be further set at 0.05-1 mm.
  • the hot-air cotton used in the hot-air cotton layer 122 is further restricted.
  • the width range is between 200-600mm, the allowable width deviation is between ⁇ 7mm; the mass per unit area can be between 30-70g/m2 And the deviation rate is between ⁇ 10%
  • Embodiment 4 of the present invention discloses a respiratory protection device.
  • the width of the hot-air cotton used in the hot-air cotton layer 122 can be between 200-400mm, and the deviation is between ⁇ 5mm; as for the hot air
  • the mass per unit area of the cotton layer 122 can be limited to 45-60g/m2 and the deviation rate is between ⁇ 10%; this can effectively ensure the use of the respiratory protection device, while continuously optimizing the barrier that the respiratory protection device has. And breathability.
  • Embodiment 5 of the present invention also discloses a respiratory protection device.
  • the pores of the hot-air cotton layer 122 selected in Embodiment 5 of the present invention The rate is greater than the porosity of the first melt-blown cloth filter layer 121 and the porosity of the second melt-blown cloth filter layer 123.
  • the porosity test can be conducted based on GB/T33052-2016, and the porosity of the hot-air cotton layer 122 is 88%, the porosity of the first meltblown cloth filter layer 121 is 82%, and the porosity of the second meltblown cloth filter layer is 82%.
  • the porosity of 123 is 80%; in this case, further based on the comparative examples tested in the above-mentioned Examples 1-4 and the test environment, the comparison results of this Example 5 and other tests are shown in Table 6:
  • the barrier property and air permeability can be further optimized.
  • Embodiment 6 of the present invention also discloses a respiratory protection device.
  • the hot-air cotton A solid net is also provided on the outside of the layer 122, and the solid net is made of a resin containing a cross-linked copolymer of butyl acrylate and methyl methacrylate.
  • the shape of the hot-air cotton layer 122 can be effectively fixed, and the air permeability of the entire respiratory protection device can be ensured, so that the respiratory protection device has both air permeability and barrier properties.
  • Embodiment 7 of the present invention provides a respiratory protection device.
  • the respiratory protection device of this solution may also include: a flexible catheter 6, one or more The flexible duct 6 is sleeved on the left ear 2 and is slidably connected to the left ear 2; one or more of the flexible ducts 6 are sleeved on the right ear 3 and are connected to the The right mounting ear 3 slides to connect.
  • the flexible catheter 6 may be a silicone tube or a tube made of other skin-friendly materials.
  • the flexible duct 6 and different flexible ducts 6 are respectively sleeved on the left ear 2 and the right ear 3, when the respiratory protection device needs to be fixed to the ear through the ear, the position of the flexible duct 6 can be adjusted,
  • the flexible tube 6 is connected to the ear, so as to reduce the pressure on the ear and ensure the comfort of wearing.
  • one or both ends of the flexible tube 6 are provided with a pressing fixing member 61 to be fixed to the sleeve when it is pressed to the bottom.
  • the flexible conduit 6 is fixed relative to the left ear 2 or the right ear 3.
  • the pressing and fixing member 61 is a metal ring surrounded by a metal sheet. Specifically, for example, it can be a metal ring formed of iron sheets, or a metal ring formed of copper sheets. Based on the extrusion operation, the metal ring can be fastened to the left mounting ear 2 or the right mounting ear 3. The flexible conduit 6 to which the pressing fixing member 61 is fixedly connected is fixed.
  • Embodiment 8 of the present invention also discloses a respiratory protection device.
  • the respiratory protection device in this solution may also include: Part 5.
  • the bottom of the sealing part 5 is connected to the inner side of the bottom of the mask body 1, the left end of the sealing part 5 is connected to the left end of the mask body 1, and the right end of the sealing part 5 is connected to the mask body.
  • the right end of 1 is connected, and the top of the sealing member 5 is away from the mask body 1.
  • the inner bottom of the mask body 11 is also provided with a sealing member 5.
  • a sealing member 5 Based on the specific structural design of the sealing member 5, its bottom is connected to the inner bottom of the mask body 1, and the two ends of the sealing member 5 are respectively connected to the two ends of the mask body 1 and sealed
  • the top of the piece 5 is far away from the mask body 1.
  • the sealing piece 5 can more closely fit the wearer’s chin, ensuring the seal of the wearer’s mouth and nose, so that the air breathed by the wearer will be well filtered
  • the sealing soft pad 7 may be a long strip of silicone pad or a strip of sponge pad. In this way, when the bridge of the nose 4 is pressed onto the bridge of the nose, the sealing cushion 7 can play a buffering role, and the sealing performance can be further increased.
  • the breathing protection device can be fixed, and when the breathing protection device is worn for too long, as shown in Figure 6, an elastic buckle can also be set 9.
  • an embodiment of the present invention proposes a respiratory protection device, which includes: a mask body 1, a nasal bridge 4, a left hanging ear 2, a right hanging ear 3;
  • the intermediate filter layer 12 is sequentially provided with a first melt blown cloth filter layer 121, a hot air cotton layer 122, and a second melt blown cloth from the outside to the inside
  • the filter layer 123; the edges of the first non-woven fabric layer 11, the middle filter layer 12, and the second non-woven fabric layer 13 are all fixedly connected; the left side of the mask body 1 is connected to the left ear 2.
  • the right earpiece 3 is connected to the right side of the mask body 1.
  • the hot-air cotton layer 122 By arranging a hot-air cotton layer 122 between the two melt-blown cloth filter layers in the mask body 1, the hot-air cotton layer 122 is relatively fluffy and will form an approximately parallel gap between the two melt-blown cloth filter layers. Layers of meltblown cloth filter layers move freely, so that air can be transmitted at any point on the surface of the inner and outer meltblown cloth filter layers, combined with its own meltblown cloth filter layer, making the respiratory protection device both excellent It also adjusts the pressure drop inside and outside the respiratory protection device during use, and the ventilation comfort during use can be effectively improved.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

La présente invention concerne un dispositif de protection respiratoire, comprenant un corps de masque, une nervure de pont nasal, une boucle d'oreille suspendue gauche et une boucle d'oreille suspendue droite. Dans l'ordre depuis l'extérieur vers l'intérieur, le corps de masque est pourvu successivement d'une première couche de tissu non tissé, d'une couche de filtre intermédiaire et d'une seconde couche de tissu non tissé ; dans l'ordre depuis l'extérieur vers l'intérieur, la couche de filtre intermédiaire est pourvue successivement d'une première couche de filtre en tissu soufflé à l'état fondu, d'une couche de coton à air chaud et d'une seconde couche de filtre en tissu soufflé à l'état fondu ; et les bords de la première couche de tissu non tissé, de la couche de filtre intermédiaire et de la seconde couche de tissu non tissé sont tous reliés de manière fixe. En fournissant la couche de coton à air chaud, la couche de coton à air chaud étant relativement pelucheuse, un espace sensiblement parallèle est formé entre deux couches de filtre soufflées à l'état fondu, et de l'air peut se déplacer librement entre les deux couches de filtre soufflées à l'état fondu, de telle sorte que l'air peut être transmis en n'importe quel point sur les surfaces des couches de filtre soufflées à l'état fondu interne et externe, qui non seulement fournit une excellente propriété de barrière, mais ajuste également la chute de pression à l'intérieur et à l'extérieur du dispositif de protection respiratoire pendant l'utilisation. Par conséquent, le niveau de confort de respirabilité pendant l'utilisation peut être efficacement amélioré.
PCT/CN2020/131880 2020-04-23 2020-11-26 Dispositif de protection respiratoire WO2021212830A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010328291.2 2020-04-23
CN202010328291.2A CN111317931A (zh) 2020-04-23 2020-04-23 一种呼吸保护装置

Publications (1)

Publication Number Publication Date
WO2021212830A1 true WO2021212830A1 (fr) 2021-10-28

Family

ID=71164599

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/131880 WO2021212830A1 (fr) 2020-04-23 2020-11-26 Dispositif de protection respiratoire

Country Status (2)

Country Link
CN (1) CN111317931A (fr)
WO (1) WO2021212830A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115088893A (zh) * 2022-08-15 2022-09-23 宁波利安科技股份有限公司 防菌透气口罩、口罩组件、口罩的加工工艺以及装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111317931A (zh) * 2020-04-23 2020-06-23 金发科技股份有限公司 一种呼吸保护装置

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202009717U (zh) * 2011-03-01 2011-10-19 上海爽蒂生活日用品有限公司 一次性口罩
EP2486960A1 (fr) * 2011-02-14 2012-08-15 Sperian Protection Armor Corps de masque formé d'un ensemble de couches liées
CN102860600A (zh) * 2012-09-14 2013-01-09 王晓夏 一种半椭圆形防护面罩口罩的制作方法
CN203676202U (zh) * 2013-12-27 2014-07-02 张雨轩 防雾霾空气专用防护口罩
CN203692609U (zh) * 2014-01-26 2014-07-09 云南白药集团股份有限公司 一种雾霾防护口罩
CN105661693A (zh) * 2016-04-08 2016-06-15 建德市朝美日化有限公司 多层立体防护口罩及其制作方法和用途
CN106139441A (zh) * 2016-08-30 2016-11-23 美佳德科技（无锡）有限公司 一种重复利用的防病毒口罩
CN205962943U (zh) * 2016-07-21 2017-02-22 建德市朝美日化有限公司 一种立体防护式口罩
CN206081366U (zh) * 2016-08-01 2017-04-12 北京小氧科技有限公司 一种新型一次性口罩
CN106690545A (zh) * 2015-11-16 2017-05-24 李平 一种医用口罩
CN207613235U (zh) * 2017-10-20 2018-07-17 湖北中海健康产品有限公司 一种艾草抑菌防霾口罩
CN109349704A (zh) * 2018-10-31 2019-02-19 名典上品（北京）信息技术有限公司 一种防护型口罩
CN111317931A (zh) * 2020-04-23 2020-06-23 金发科技股份有限公司 一种呼吸保护装置
CN211024872U (zh) * 2020-04-23 2020-07-17 金发科技股份有限公司 一种呼吸保护装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110003477U (ko) * 2009-09-30 2011-04-06 박상길 마스크
US8967147B2 (en) * 2009-12-30 2015-03-03 3M Innovative Properties Company Filtering face-piece respirator having an auxetic mesh in the mask body
JP2015062450A (ja) * 2013-09-24 2015-04-09 株式会社スヴェンソン 補助具
CN203523847U (zh) * 2013-09-29 2014-04-09 厦门蓝星企业有限公司 一种防寒口罩
CN103830980A (zh) * 2014-03-21 2014-06-04 吕晓莉 高效滤霾核孔膜滤片及高效滤霾核孔膜口罩
CN106723520A (zh) * 2017-03-06 2017-05-31 东莞市利发爱尔空气净化系统有限公司 一种防雾霾口罩主体材料及口罩
CN107736658A (zh) * 2017-11-16 2018-02-27 湖北同盛网络科技有限公司 高弹性非织造布口罩
CN209898342U (zh) * 2019-03-18 2020-01-07 东莞梓凌实业有限公司 一种耳挂一体成型的海绵口罩

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2486960A1 (fr) * 2011-02-14 2012-08-15 Sperian Protection Armor Corps de masque formé d'un ensemble de couches liées
CN202009717U (zh) * 2011-03-01 2011-10-19 上海爽蒂生活日用品有限公司 一次性口罩
CN102860600A (zh) * 2012-09-14 2013-01-09 王晓夏 一种半椭圆形防护面罩口罩的制作方法
CN203676202U (zh) * 2013-12-27 2014-07-02 张雨轩 防雾霾空气专用防护口罩
CN203692609U (zh) * 2014-01-26 2014-07-09 云南白药集团股份有限公司 一种雾霾防护口罩
CN106690545A (zh) * 2015-11-16 2017-05-24 李平 一种医用口罩
CN105661693A (zh) * 2016-04-08 2016-06-15 建德市朝美日化有限公司 多层立体防护口罩及其制作方法和用途
CN205962943U (zh) * 2016-07-21 2017-02-22 建德市朝美日化有限公司 一种立体防护式口罩
CN206081366U (zh) * 2016-08-01 2017-04-12 北京小氧科技有限公司 一种新型一次性口罩
CN106139441A (zh) * 2016-08-30 2016-11-23 美佳德科技（无锡）有限公司 一种重复利用的防病毒口罩
CN207613235U (zh) * 2017-10-20 2018-07-17 湖北中海健康产品有限公司 一种艾草抑菌防霾口罩
CN109349704A (zh) * 2018-10-31 2019-02-19 名典上品（北京）信息技术有限公司 一种防护型口罩
CN111317931A (zh) * 2020-04-23 2020-06-23 金发科技股份有限公司 一种呼吸保护装置
CN211024872U (zh) * 2020-04-23 2020-07-17 金发科技股份有限公司 一种呼吸保护装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115088893A (zh) * 2022-08-15 2022-09-23 宁波利安科技股份有限公司 防菌透气口罩、口罩组件、口罩的加工工艺以及装置
CN115088893B (zh) * 2022-08-15 2023-08-18 宁波利安科技股份有限公司 防菌透气口罩、口罩组件、口罩的加工工艺以及装置

Also Published As

Publication number Publication date
CN111317931A (zh) 2020-06-23

Similar Documents

Publication Publication Date Title
US11969611B2 (en) Face mask with supporting strip
KR100936050B1 (ko) 다용도 방진 마스크
WO2021212830A1 (fr) Dispositif de protection respiratoire
US11896854B2 (en) Hygiene mask with seal forming structure
US7077140B1 (en) Face mask and method
CN210611090U (zh) 一种多层口罩
JP2014111193A (ja) マスク、マスク用ノーズアダプタ、およびマスクセット
CN211024872U (zh) 一种呼吸保护装置
CN210611091U (zh) 一种石墨烯口罩
TWM593883U (zh) 抗空污簡便鼻濾罩結構
KR102219597B1 (ko) 호흡 개선용 마스크
CN212911821U (zh) 一种外耳挂带口罩
CN212814476U (zh) 一种具有过滤透气结构的免勒耳式清凉口罩
CN212233237U (zh) 一种折叠式医用防护口罩
CN210492729U (zh) 一种改良型感染护理口罩
CN113142715A (zh) 一种带透气改善功能的医用外科口罩
CN214802560U (zh) 一种呼吸分离式口罩
CN213604555U (zh) 一种抑菌抗病毒口罩
CN214710572U (zh) 一种改良式防压疮口罩
CN220756639U (zh) 一种可调节长度的kn95口罩
CN213188238U (zh) 一种系带可调的舒适型口罩
TW201521825A (zh) 具有呼出氣體導向薄片之口罩
KR102605051B1 (ko) 걸이끈의 길이를 조절할 수 있는 마스크
CN213247046U (zh) 一种口罩用鼻夹
CN214386211U (zh) 一种便于佩戴的呼吸科用防护口罩

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20931729

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205 DATED 14.12.2022)

122 Ep: pct application non-entry in european phase

Ref document number: 20931729

Country of ref document: EP

Kind code of ref document: A1