How to make surgical mask reusable? 如何令口罩可重复使用?

China, and the rest of the world, is facing a serious shortage of surgical mask, mainly due to the recent spread of coronavirus. Although the Government advises only those who feel unwell need to wear masks, the public responses are not the same. Everyone feels safer to wear a mask when going out.
Typical production facilities were established for medical and industrial use. When everyone needs to use a disposable surgical mask to prevent the contagious viruses, the current supplies are far from sufficient.
To overcome such a challenge, there are three possible solutions directions:

中国和世界其他地区正面临着口罩的严重短缺,这主要是由于最近冠状病毒的快速传播所致。 虽然政府只建议感到不适的人戴口罩,公众的反应却不一样。 出门时,每个人戴着口罩感觉会更安全。
当前的生产设施主要是用于医疗和工业用途。 当每个人都需要使用一次性手术口罩来预防传染性病毒时,目前的供应远远不够。
为了克服这一挑战,存在三种可能的解决方案方向:

  1. Increases production facilities, which will take some times (months), by then, the demand may die out with the virus.
  2. Solutions on how to reuse the surgical mask safely
  3. Alternative face-covering solutions
  1. 增加生产设施,这将花费一些时间(数月),到那时,需求可能会随着病毒而消失。
  2. 如何安全重复使用口罩的解决方案
  3. 替代口罩的解决方案

Follows direction (2), this tutorial shows how to turn a one-time-use surgical mask to become a reusable surgical mask for the general public.
For the public in a daily context, the risk of exposure to the virus is relatively low. There are two main reasons that the surgical mask cannot be reused:
Firstly, the surgical mask is consist of thin fabric. As the user talks, it often gets sucked to touch the lips and get wet by saliva. Secondly, although not in a high-risk area, there may be a small amount of virus or bacteria stuck on the outside surface of the mask.
The method introduced below is to prevent these two problems.
*the method introduced in this tutorial is not intended for use in a medical setting, where there is a high risk of contamination and cross-infections. A disposable mask is much safer in that context.

本教程介绍如何将一次性口罩变成可重复使用的口罩。

对于公众而言,每天接触该病毒的风险相对较低。 手术口罩不能重复使用的主要原因有两个:
首先,手术口罩由薄织物组成。 当用户讲话时,它经常被吮吸以接触嘴唇并被唾液弄湿。 其次,尽管不在高风险区域,但可能有少量病毒或细菌粘附在面罩的外表面。
下面介绍的方法是为了防止这两个问题。
*本教程中介绍的方法不适用于具有高污染和交叉感染风险的医疗环境。 在这种情况下,一次性口罩要安全得多。

Let go straight to the steps:
What you need: A surgical mask, plastic file pocket (or thin plastic sheet), penknife, ruler, staple.
直接进入主题:
您需要:外科口罩,薄塑料片,剪刀,钉书机。

1. Marking both sides of the nose, and the centre of the chin (3 dots)
2. Prepare 2 plastic strips of 2cm wide, ~20 cm long.
1.标记鼻子的两侧和下巴的中心(3点)
2.准备2条2cm宽,〜20 cm长的塑料条。
3. arrange a V-shape for the two strips matching the marks on the mask
4. trim off the bottom of the V-shape
3.两條塑料片排列一个V形,以匹配面罩上的标记
4.用剪刀修剪平V形的底部
5. Align the bottom of the V-shape with the 3-d0ts, staple the plastic V and the bottom of chin together.
5.将V形的底部与三點对齐,将V形和下巴的底部用钉书机钉在一起。
6. align the top of the V-shape next to the nose mark, trim off the excess and staple them together. 6.将V形的顶部对准鼻子标记,将多余的部分修剪掉并用钉书机与口罩钉在一起。
7. The finished reusable surgical mask for general public use.
7.可重复使用的外科口罩的成品供公众使用。
8. The mask should maintain a “bulge-out” shape. It should not be “suck in” as you breathe in. Keeping a distance between your lips and the inside of the mask.
8.面罩应保持“凸出”形状。 吸气时不应被“吸入”。嘴唇与口罩内部应保持一定距离。

The finished mask should be able to survive a few hours of use without getting the inside wet by saliva. After each use, you can keep it inside a ziplock bag and hang it under sunshine to kill any germs or virus attached on the outside of the mask. Clean the inside of the ziplock bag with alcohol or disinfection liquid daily.
Remember, in this global mask shortage situation, each additional time you can reuse the mask means one more mask for the front line doctors and nurses who need it critically.

成品口罩应能够使用数小时,而不会被唾液弄湿。 每次使用后,您可以将其保存在自封袋中,并将其悬挂在阳光下,以杀死口罩外部附着的任何细菌或病毒。 每天用酒精或消毒液清洁自封袋的内部。
请记住,在目前全球口罩短缺的情况下,您每再重複使用一次口罩就相當於为急需口罩的一线医生和护士提供一个口罩。

Reference:
1. 口罩不够用,如何高效利用?新华网 | 2020-02-09 19:51:24
2. 口罩可以消毒后再用吗?医生说可以,告诉你消毒的方法
3. 科技日报:一次性口罩不可用水煮、喷酒精等方法循环使用
4. 工信部解答口罩不够用:生产0.5秒/只,消毒要7天到半个月
5. 一次性口罩能否消毒后重复使用?——扫描电镜的实验结果公布飞纳电镜


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