WO2013107095A1 - 一种带有呼气阀的口罩 - Google Patents

一种带有呼气阀的口罩 Download PDF

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Publication number
WO2013107095A1
WO2013107095A1 PCT/CN2012/073150 CN2012073150W WO2013107095A1 WO 2013107095 A1 WO2013107095 A1 WO 2013107095A1 CN 2012073150 W CN2012073150 W CN 2012073150W WO 2013107095 A1 WO2013107095 A1 WO 2013107095A1
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Prior art keywords
exhalation valve
mask
cup cover
dimensional cup
fabric layer
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PCT/CN2012/073150
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English (en)
French (fr)
Inventor
邓美生
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深中海医疗用品（深圳）有限公司
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Publication of WO2013107095A1 publication Critical patent/WO2013107095A1/zh

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    • 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
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks
    • A62B18/025—Halfmasks
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/10—Valves

Definitions

  • the utility model relates to a mask, in particular to a mask with an exhalation valve.
  • the nose bridge and the lower surface of the mask are in contact with the human face. Rubber, a one-way exhalation valve is provided on the lower side of the horizontal wire.
  • the one-way exhalation valve in the technical solution has a complicated structure and high processing cost, thereby resulting in a high cost of the mask and a wide application range.
  • the technical problem to be solved by the utility model is to provide a mask with simple structure, good filtering effect, smooth exhalation, easy processing and wide application.
  • the exhalation valve is disposed on an end of the three-dimensional cup cover near the chin of the human body.
  • the technical solution of the present invention is: a mask with an exhalation valve, comprising a three-dimensional cup cover and an exhalation valve disposed on the three-dimensional cup cover, the exhalation valve is tapered
  • the groove is configured to extend in a direction away from the face of the human body, and the end of the wedge-shaped groove extending in the direction is two pieces which are close together when there is no external force.
  • a soft sealing ring is connected to the edge of the three-dimensional cup cover, and the soft sealing ring includes a first end connected to the three-dimensional cup cover, a ring body matched with the human body surface, and A second end extending toward the mouth of the human body is provided with a notch that fits the bridge of the nose at a position where the second end is engaged with the nose.
  • the three-dimensional cup cover is connected with a fixing belt, and the fixing belt comprises a binding head strap and a neck strap, and the binding head strap and the neck strap are at the left and right face positions of the human body. Shaped cross structure.
  • the three-dimensional cup cover is provided with a concave support frame, and the non-woven fabric layer comprises a front non-woven fabric layer, an intermediate non-woven fabric layer and a rear non-woven fabric layer.
  • the cup cover includes a front nonwoven fabric layer, a support frame, an intermediate nonwoven fabric layer, a filter cotton layer, and a rear nonwoven fabric layer which are sequentially laminated.
  • the support frame includes a first ring and a second ring that are not connected to each other in the same plane, and the second ring encloses an area smaller than the first ring Area.
  • a mask with an exhalation valve comprising a three-dimensional cup cover and an exhalation valve disposed on the three-dimensional cup cover, the exhalation valve being composed of a wedge-shaped slot.
  • the wedge-shaped slit extends in a direction away from the face of the human body, and the end of the wedge-shaped groove extending in the direction is two sheets which are abutted together without an external force.
  • the structure of the exhalation valve can be opened in time when exhaling, and the exhaled gas can be smoothly discharged.
  • the exhalation valve When inhaling, the exhalation valve will be closed in time, and the gas to be filtered is filtered through the multi-layer filter layer and then enters the mask, so that The smoothness of the breathing can be ensured under the premise of ensuring a good filtering effect of the mask, and the wearing comfort is improved.
  • the exhalation valve is disposed on an end of the three-dimensional cup cover close to the chin of the human body. The structure is such that the exhalation valve and the nostril are directly opposite each other, and the exhaled gas can be quickly and timely discharged, thereby avoiding the exhalation gas not being completely discharged. Suffocating, improves the comfort of wearing.
  • a soft sealing ring is connected to an edge of the three-dimensional cup cover, and the soft sealing ring comprises a first end connected to the three-dimensional cup cover, a ring body matched with the human body surface, and a first extending to the mouth of the human body Two ends, A gap that engages the bridge of the nose is provided at a position where the second end is engaged with the nose.
  • a fixing strap is attached to the three-dimensional cup cover, the fixing strap includes a binding head strap and a neck strap, and the binding head strap and the neck strap are X-shaped cross structures at a human face position, and the X-shaped crossover
  • the structure is placed on the left and right face of the person. This structure causes the binding head to apply an oblique upward force to the three-dimensional cup cover, and the neck neck belt applies a downward downward force to the three-dimensional cup cover, so that the three-dimensional cup cover can be applied by the two forces and the human body surface. Closely integrated.
  • the head and neck can withstand a greater pulling force than the ear, thus ensuring better wearing comfort while fully meeting the tension requirements of the mask seal.
  • the three-dimensional cup cover comprises a non-woven fabric layer and a filter layer which are superposed on each other, wherein the three-dimensional cup cover is provided with a concave support frame, and the non-woven fabric layer comprises a front non-woven fabric layer, an intermediate non-woven fabric layer and a rear nonwoven fabric layer comprising a front nonwoven fabric layer, a support frame, an intermediate nonwoven fabric layer, a filter cotton layer and a rear nonwoven fabric layer which are sequentially laminated, the support frame includes not in the same plane First and second rings that are interconnected and interconnected.
  • the concave support frame can ensure a certain gap between the inner side of the three-dimensional cup cover and the nose and mouth, so as not to affect the daily speech conversation, and the plurality of filter layers which are sequentially stacked on each other make the mask filter effect better.
  • the support frame formed by the interconnected rings not in the same plane greatly reduces the weight of the cup cover while ensuring sufficient clearance between the inside of the three-dimensional cup cover and the nose and mouth, making the mask more lightweight and more wearable. Comfortable.
  • the area enclosed by the second ring is smaller than the area enclosed by the first ring.
  • the support frame structure makes the three-dimensional cup form an approximately hemispherical shape, maximizing the filter layer area and ensuring the inhalation. Smooth and avoid sulking.
  • Figure 1 is a schematic view of the overall structure of the present invention
  • FIG. 2 is a schematic structural view of a three-dimensional cup cover of the present invention.
  • FIG. 3 is a schematic structural view of a support frame in one embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a support frame in the second embodiment of the present invention.
  • Figure 5 is a schematic view showing the structure of the soft seal ring of the present invention.
  • Figure 6 is a front view of the soft seal of the present invention.
  • Figure 7 is a cross-sectional view of the soft seal A-A of the present invention.
  • Figure 8 is a schematic view showing the working state of the utility model during inhalation
  • Figure 9 is a partial enlarged view of the working state of the present invention when inhaling.
  • Figure 10 is a schematic view showing the working state of the utility model during exhalation
  • Figure 11 is a partial enlarged view of the working state diagram B of the present invention during exhalation.
  • a comfortable mask includes a three-dimensional cup cover 1 and a fixing belt connected to the three-dimensional cup cover 1
  • the fixing strap 2 includes a binding head strap 21 and a neck strap 22, and the binding head strap 21 and the neck strap 22 have an X-shaped cross structure at a human face position, and the X The cross-shaped structure is arranged on the left and right face parts of the person.
  • the three-dimensional cup cover 1 includes a nonwoven fabric layer and a filter layer which are superposed on each other, and the three-dimensional cup cover 1 is provided with a concave support frame 12, and the nonwoven fabric layer includes a front nonwoven fabric layer 11 , the intermediate non-woven fabric layer 13 and the rear non-woven fabric layer 15, the three-dimensional cup cover comprises a front non-woven fabric layer 11 which is sequentially laminated, a support frame 12, an intermediate non-woven fabric layer 13, a filter cotton layer 14 and no after Textile layer 15 .
  • the support frame 12 includes a first ring that is not in the same plane and is connected to each other. 121 and a second ring 122, the second ring 122 is connected to the hollow frame 124, the hollow frame 124 is a cross structure, and the first ring 121 and the second ring 122 Between the hollow structures, the area enclosed by the second ring 122 is smaller than the area enclosed by the first ring 121.
  • the support frame 12 includes a first ring that is not in the same plane and is connected to each other. 121 and the second ring 122, the support frame 12 further includes a plurality of secondary rings 123 directly or indirectly connected to the second ring 122, the plurality of secondary rings 123 The enclosed area is sequentially reduced, and the plurality of secondary rings 123 and the second ring 122 and the first-stage secondary ring 123 are connected by a hollow structure, the first ring 121 and the Second ring Between 122 is a hollow structure.
  • a soft sealing ring 3 is attached to the edge of the three-dimensional cup cover 1, and the soft sealing ring 3
  • a first end 31 coupled to the three-dimensional cup cover 1 and a ring body 32 mating with the human body surface and a second end 33 extending toward the mouth of the human body are disposed at the second end 33
  • a position 34 that cooperates with the nose is provided with a notch 34 that cooperates with the bridge of the nose, and an exhalation valve 35 is disposed on the three-dimensional cup cover 1, wherein only the exhalation valve 35 is shown in the stereo cup cover 1 The upper position, but the specific structure of the exhalation valve 35 is not shown.
  • the exhalation valve 35 is constituted by a wedge-shaped narrow groove 351, and the wedge-shaped fine groove 351 Extending in a direction away from the face of the human body, the end of the wedge-shaped slot 351 extending in the direction is two sheets 352 which abut together when there is no external force.
  • the exhalation valve 35 is disposed on the stereo cup cover 1 Close to the end of the human chin.

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

Abstract

一种带有呼气阀的口罩，包括立体杯罩（1）和设置在所述立体杯罩（1）上的呼气阀（35），所述呼气阀（35）由楔形细槽（351）构成，所述楔形细槽（351）沿背离人体面部方向延伸，所述楔形细槽（351）延伸方向的末端为两片在没有外力作用时紧靠在一起的薄片（352），所述呼气阀（35）设在所述立体杯罩（1）上靠近人体下巴的一端。该口罩佩戴舒适、过滤效果好、结构简单、便于加工。

Description

一种带有呼气阀的口罩 技术领域
本实用新型涉及一种口罩，特别是涉及一种带有呼气阀的口罩。
背景技术
在日常生活和医疗领域中，口罩的应用应用越来越广泛。现有的口罩主要为平面结构。申请公布号为 CN101816466A 的中国发明专利于 2010 年 9 月 1 日公开了'碗状立体型折叠式防尘口罩' , 其技术方案是：一种碗状立体型折叠式防尘口罩，口罩里层是无纺布骨架，外层是面布，里、外层之间是过滤布和网格布，网格布中段有一条水平焊线，与该水平焊线相连接向下延伸至口边有一条垂直焊线，沿水平焊线和垂直焊线能够折叠，口罩与人脸接触面的鼻梁和下额粘贴有硅橡胶，在水平焊线下方一侧设置有单向呼气阀。本发明的优点是能进行折叠，且复原后保持原有的形状；占用体积小，为包装运输提供了方便，使用者可随手放入衣袋中携带。
技术问题
但该技术方案中的单向呼气阀结构复杂，加工成本高，从而导致口罩的造价较高、适用面不广。
技术解决方案
本实用新型所要解决技术问题是，提供一种结构简单、过滤效果好、呼气顺畅、易于加工且便于广泛推广应用的口罩。
优选的，所述呼气阀设在所述立体杯罩上靠近人体下巴的一端。
为解决以上技术问题，本实用新型的技术方案是：一种带有呼气阀的口罩，包括立体杯罩和设置在所述立体杯罩上的呼气阀，所述呼气阀由楔形细槽构成，所述楔形细槽沿背离人体面部方向延伸，所述楔形细槽延伸方向的末端为两片在没有外力作用时紧靠在一起的薄片。
作为本实用新型的改进，在所述立体杯罩的边缘上连接有软质密封圈，所述软质密封圈包括和立体杯罩相连接的第一端、与人体面部相配合的圈体以及向人体口部延伸的第二端，在所述第二端和鼻子配合的位置开设有与鼻梁配合的缺口。
作为本实用新型进一步的改进，所述立体杯罩上连接有固定带，所述固定带包括缚头带和束颈带，所述缚头带和所述束颈带在人体左右脸部位置为 X 形交叉结构。
作为本实用新型更进一步的改进，所述立体杯罩中设有凹形支撑架，所述无纺布层包括前无纺布层、中间无纺布层和后无纺布层，所述立体杯罩包括依次叠合的前无纺布层、支撑架、中间无纺布层、过滤棉层和后无纺布层。
作为本实用新型再进一步的改进，所述支撑架包括不在同一个平面内且相互连接的第一环和第二环，所述第二环所围成的面积小于所述第一环所围成的面积。
 有益效果
通过实施本实用新型可取得以下有益效果：一种带有呼气阀的口罩，包括立体杯罩和设置在所述立体杯罩上的呼气阀，所述呼气阀由楔形细槽构成，所述楔形细槽沿背离人体面部方向延伸，所述楔形细槽延伸方向的末端为两片在没有外力作用时紧靠在一起的薄片。这种呼气阀结构可以在呼气的时候及时打开，顺畅地排出呼出的气体，在吸气时呼气阀会及时关闭，让待过滤气体通过多层过滤层过滤后进入到口罩内，这样可以在保证口罩良好的过滤效果的前提下保证呼吸的顺畅，提高了佩戴的舒适度。所述呼气阀设在所述立体杯罩上靠近人体下巴的一端，这样的结构使得呼气阀和鼻孔正对着，呼出的气体可以快速及时地排出，避免了呼出气体未完全排出而造成闷气，提高了佩戴的舒适度。
在所述立体杯罩的边缘上连接有软质密封圈，所述软质密封圈包括和立体杯罩相连接的第一端、与人体面部相配合的圈体以及向人体口部延伸的第二端， 在所述第二端和鼻子配合的位置开设有与鼻梁配合的缺口。这种结构保证了在佩戴时口罩和人体面部紧密结合，从而杜绝了待过滤空气从口罩和人体面部的缝隙进入到口罩内的风险，提高了过滤效果。
所述立体杯罩上连接有固定带，所述固定带包括缚头带和束颈带，所述缚头带和所述束颈带在人体脸部位置为X形交叉结构，所述X形交叉结构设置在人的左右脸部位。这种结构使得缚头带给立体杯罩施加一个斜向上的力，束颈带给立体杯罩施加一个斜向下的力，从而使得立体杯罩在这两个力的作用下和人体面部可以紧密结合。头部和颈部与耳朵相比可以承受较大的拉力，从而保证了在完全满足口罩密封性的拉力要求的前提下有较好的佩戴舒适度。
所述立体杯罩包括相互叠合的无纺布层和过滤层，所述立体杯罩中设有凹形支撑架，所述无纺布层包括前无纺布层、中间无纺布层和后无纺布层，所述立体杯罩包括依次叠合的前无纺布层、支撑架、中间无纺布层、过滤棉层和后无纺布层，所述支撑架包括不在同一个平面内且相互连接的第一环和第二环。凹形支撑架可以保证立体杯罩的内侧和口鼻之间有一定的间隙，从而不会影响到日常的言语交谈，依次相互叠合在一起的多个过滤层使得口罩的过滤效果更好。不在同一个平面内的相互连接的环所构成的支撑架在保证立体杯罩的内侧和口鼻之间有足够间隙的前提下大大降低了杯罩的重量，使得口罩更为轻巧，佩戴更为舒适。所述第二环所围成的面积小于所述第一环所围成的面积，这种支撑架结构使得立体罩杯形成一个近似半球形，最大限度地增加了过滤层面积，保证了吸气的顺畅，避免了闷气。
 附图说明
图 1 是本实用新型整体结构示意图；
图 2 是本实用新型立体杯罩的结构示意图；
图 3 是本实用新型实施例之一中支撑架结构示意图；
图 4 是本实用新型实施例之二中支撑架结构示意图；
图 5 是本实用新型软质密封圈结构示意图；
图 6 是本实用新型软质密封圈主视图；
图 7 是本实用新型软质密封圈 A-A 向剖视图；
图 8 是本实用新型吸气时工作状态示意图；
图 9 是本实用新型吸气时工作状态示意图 A 处的局部放大图；
图 10 是本实用新型呼气时工作状态示意图；
图 11 是本实用新型呼气时工作状态示意图 B 处的局部放大图。
 本发明的最佳实施方式
本发明的实施方式
如图 1 、图 2 所示，一种舒适型口罩，包括立体杯罩 1 和与所述立体杯罩 1 相连接的固定带 2 ，所述固定带 2 包括缚头带 21 和束颈带 22 ，所述缚头带 21 和所述束颈带 22 在人体脸部位置为 X 形交叉结构，所述 X 形交叉结构设置在人的左右脸部位。所述立体杯罩 1 包括相互叠合的无纺布层和过滤层，所述立体杯罩 1 中设有凹形支撑架 12 ，所述无纺布层包括前无纺布层 11 、中间无纺布层 13 和后无纺布层 15 ，所述立体杯罩包括依次叠合的前无纺布层 11 、支撑架 12 、中间无纺布层 13 、过滤棉层 14 和后无纺布层 15 。
如图 3 所示，作为本实用新型的实施例之一：所述支撑架 12 包括不在同一个平面内且相互连接的第一环 121 和第二环 122 ，所述第二环 122 同镂空架 124 连接，所述镂空架 124 为十字架结构，所述第一环 121 和所述第二环 122 之间为镂空结构，所述第二环 122 所围成的面积小于所述第一环 121 所围成的面积。
如图 4 所示，作为本使用新型的实施例之二：所述支撑架 12 包括不在同一个平面内且相互连接的第一环 121 和第二环 122 ，所述支撑架 12 还包括与所述第二环 122 直接或者间接连接的若干次级环 123 ，所述若干次级环 123 所围成的面积依次减小，所述若干次级环 123 之间以及所述第二环 122 与第一级次级环 123 之间均为镂空结构连接，所述第一环 121 和所述第二环 122 之间为镂空结构。
如图 1 、图 5 所示，在所述立体杯罩 1 的边缘上连接有软质密封圈 3 ，所述软质密封圈 3 包括和立体杯罩 1 相连接的第一端 31 、和人体面部相配合的圈体 32 以及向人体口部延伸的第二端 33 ，在所述第二端 33 和鼻子配合的位置开设有与鼻梁配合的缺口 34 ，在所述立体杯罩 1 上设置有呼气阀 35 ，其中图 5 仅示出了所述呼气阀 35 在所述立体杯罩 1 上的位置，但未示出所述呼气阀 35 的具体结构。
如图 6 、图 7 所示，所述呼气阀 35 由楔形细槽 351 构成，所述楔形细槽 351 沿背离人体面部方向延伸，所述楔形细槽 351 延伸方向的末端为两片在没有外力作用时紧靠在一起的薄片 352 。所述呼气阀 35 设在所述立体杯罩 1 上靠近人体下巴的一端。
如图 8 、图 9 所示，在吸气时两薄片 352 会紧靠在一起，气体无法从呼气阀进入到立体杯罩 1 内。
如图 10 、图 11 所示，呼气时两薄片 352 会打开，呼出的气体从呼气阀、无纺布层和过滤层同时排出。
必须指出，上述实施例只是对本实用新型做出的一些非限定性举例说明。但本领域的技术人员会理解，在没有偏离本实用新型的宗旨和范围下，可以对本实用新型做出修改、替换和变更，这些修改、替换和变更仍属本实用新型的保护范围。
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Claims (10)

  1. 一种带有呼气阀的口罩，包括立体杯罩（1）和设置在所述立体杯罩（1）上的呼气阀（35），其特征是：所述呼气阀（35）由楔形细槽（351）构成，所述楔形细槽（351）沿背离人体面部方向延伸，所述楔形细槽（351）延伸方向的末端为两片在没有外力作用时紧靠在一起的薄片（352）。
  2. 根据权利要求1所述的带有呼气阀的口罩，其特征是：所述呼气阀（35）设在所述立体杯罩（1）上靠近人体下巴的一端。
  3. 根据权利要求2所述的带有呼气阀的口罩，其特征是：在所述立体杯罩（1）的边缘上连接有软质密封圈（3），所述软质密封圈（3）包括和立体杯罩（1）相连接的第一端（31）、与人体面部相配合的圈体（32）以及向人体口部延伸的第二端（33）。
  4. 根据权利要求3所述的带有呼气阀的口罩，其特征是：在所述第二端（33）和鼻子配合的位置开设有与鼻梁配合的缺口（34）。
  5. 根据权利要求4所述的带有呼气阀的口罩，其特征是：所述立体杯罩（1）上连接有固定带（2），所述固定带（2）包括缚头带（21）和束颈带（22），所述缚头带（21）和所述束颈带（22）在人体左右脸部位置为X形交叉结构。
  6. 根据权利要求1至5中任何一项所述的带有呼气阀的口罩，其特征是：所述立体杯罩（1）包括相互叠合的无纺布层和过滤层。
  7. 根据权利要求6所述的带有呼气阀的口罩，其特征是：所述立体杯罩（1）中设有凹形支撑架（12）。
  8. 根据权利要求7所述的带有呼气阀的口罩，其特征是：所述无纺布层包括前无纺布层（11）、中间无纺布层（13）和后无纺布层（15），所述立体杯罩包括依次叠合的前无纺布层（11）、支撑架（12）、中间无纺布层（13）、过滤棉层（14）和后无纺布层（15）。
  9. 根据权利要求8所述的带有呼气阀的口罩，其特征是：所述支撑架包括不在同一个平面内且相互连接的第一环（121）和第二环（122）。
  10. 据权利要求9所述的带有呼气阀的口罩，其特征是：所述第二环（122）所围成的面积小于所述第一环（121）所围成的面积。
PCT/CN2012/073150 2012-01-20 2012-03-27 一种带有呼气阀的口罩 WO2013107095A1 (zh)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US10537755B2 (en) 2013-03-14 2020-01-21 Scott Technologies, Inc. Heat deformable material for face seal
US11273333B2 (en) 2013-03-14 2022-03-15 Scott Technologies, Inc. Respirator with phase change material

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CN103284357B (zh) * 2013-06-08 2015-10-14 上海大胜卫生用品制造有限公司 三阀门防尘口罩

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US4974586A (en) * 1986-11-06 1990-12-04 Moldex/Metric Products, Inc. Breathing mask
CN2314820Y (zh) * 1997-11-17 1999-04-21 赵钜 带呼气阀的简易过滤式口罩
CN101790404A (zh) * 2007-08-16 2010-07-28 金伯利-克拉克环球有限公司 一次性呼吸面罩
KR100985711B1 (ko) * 2010-05-11 2010-10-06 (주)씨앤투스 방진 마스크용 필터
CN201617207U (zh) * 2009-12-22 2010-11-03 邓美生 超立体型口罩

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US4974586A (en) * 1986-11-06 1990-12-04 Moldex/Metric Products, Inc. Breathing mask
CN2314820Y (zh) * 1997-11-17 1999-04-21 赵钜 带呼气阀的简易过滤式口罩
CN101790404A (zh) * 2007-08-16 2010-07-28 金伯利-克拉克环球有限公司 一次性呼吸面罩
CN201617207U (zh) * 2009-12-22 2010-11-03 邓美生 超立体型口罩
KR100985711B1 (ko) * 2010-05-11 2010-10-06 (주)씨앤투스 방진 마스크용 필터

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10537755B2 (en) 2013-03-14 2020-01-21 Scott Technologies, Inc. Heat deformable material for face seal
US11273333B2 (en) 2013-03-14 2022-03-15 Scott Technologies, Inc. Respirator with phase change material

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