Practical teaching
Written by: Li Jialiang
2020-02-24 13:30
Last updated: 2020-02-24 13:30Masks from Wuhan's pneumonia epidemic continue to be difficult to find. Dr. K Kwong, from the Department of Chemistry at the University of Hong Kong, has developed a reusable, Hong Kong-made mask "HK MASK", and uploaded drawings to teach DIY online. The social enterprise "Shanglehuifang" of the support project has also filmed on YouTube, teaching the citizens step by step how to make "HK MASK". The materials are simple and the mask supply problem is alleviated.
(Photo / Au Qingwei)
The "HK MASK" mask developed by K Kwong consists of a cloth mask cover and a filter. As long as the filter element is replaced, the cloth mask can be reused. He pointed out that Mircofiber and Nanofiber filter elements were designed with the "N95" specification as the target. The first batch will be donated and will be sold later. It is expected that the monthly output will be 2 million.
↓↓↓ "HK MASK" specifications and details: (click on the small image to enlarge it) ↓↓↓
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At present, "HK MASK" patterns have been uploaded to the Internet for download by the public. There are men, women and children styles, which can be used as needed.
(Online picture)
"HK MASK" drawing download: click here
How to make HK MASK
As for how to make "HK MASK", "Shanglehuifang" recently produced a short video step by step on YouTube, which can be completed by following the instructions.
HK MASK production preparation tools and supplies:
HK MASK Production Teaching:
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"Shanglehuifang" also provides DIY sets for ordering, but due to over-subscription, the filter is not enough for 6,500 DIY sets for the time being. The order is suspended and reopened one week later.
Although the supply of filters is limited, don't worry too much, K Kwong said that 70% filtration can be achieved by using 2 paper towels or 1 kitchen paper as the filter element (= N70).
However, K Kwong reminds that the filter element is only used once and it is recommended to replace it every 4 hours. If it is DIY, it is recommended to use cotton materials because it needs to withstand high temperature disinfection above 100 degrees.
(Profile picture / photo by Qu Qingwei)
K Kwong emphasized that welcome to improve self-control, and hope that Hong Kong people and the world will no longer buy masks.
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