- #22 [bankguy], 20-02-27 07:30
- #23 [winning7], 20-02-27 08:24
- #24 [alexanderkoo], 20-02-28 11:24Kwong said uv was not suitable for disinfection due to formation of micro-particles. Nor alcohol/silver solution. I will check ozone gas. Anyway, mask supply has been increasing, though at $100-150/box. From SE Asia having low infection and mihk.
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- #25 [bankguy], 20-02-28 11:30[#24] But I think mask supply will continue to be a big problem taking note of the current outbreak in Italy, South Korea, Iran and Japan. Demand has increased sharply and still rising.
TVB news just reported that in New York, a box of 50 surgical mask is selling at USD25, whilst normally is only USD4.
最後修改時間: 2020-02-28 11:43:22 - #26 [alexanderkoo], 20-02-28 11:43Kwong suggested that reusable (except nano-filter replacement, only prototype)or re-using mask was not feasible but only in his realm of knowledge, also based on surgical mask technology.There are a few brands in the market having certifications. Of course, long term wearing, soiling and hence, life span is still unknown due to lack of aging test. Only trust the design. Test can be done by drawing air in a wind tunnel until filter clogs,yet so many variables. However, it won't break down few hours after the design life, only less breathable.
- #27 [winning7], 20-02-28 12:35
呢度講, 情願用2層廚紙入自制防水布口罩都好過重用口罩
其實窮人買唔倒口罩用廚房紙好,仲環保D
豬嘴防倒毒,但自私可噴飛沫出黎影響其他
最後修改時間: 2020-02-28 12:41:41 - #28 [oeel], 20-02-29 13:33防水布會吾會太焗?
另外抺塵紙會吾會比厨房好?
布口罩如加兩層厨房紙係好焗架。
我住呢頭都開始爆,個幾月前己買吾到口罩。
最後修改時間: 2020-02-29 13:35:13 - #29 [alexanderkoo], 20-02-29 14:20Only a few plastics such as PVC,teflon,are unaffected by ozone. PP in mask is not one of them. Low conc. of short duration should be ok. Just got an expired box of mask for free but having smell of naphthalene ball, barely usable so must pass ozone on it.
最後修改時間: 2020-02-29 14:24:03 - #30 [winning7], 20-02-29 15:15布口罩如加兩層厨房紙係好焗架。 >>
oeel , 試左...好鬼焗....怪不得有d似 N95...又話 work
不過幾年可分解, 而口罩是膠 filter, 要分解 100年 - #31 [catcat8888], 20-02-29 15:30我轉左布口罩,用晾乾既濕紙巾做中層,唔焗。
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節錄:至於口罩裡面的「濾材」,陳醫師建議使用一般的「不織布」即可,包括「不織布」抹布、尿布、紗布、濕紙巾、衛生棉都可以,不過一定要用「新」的。其中陳醫師最推薦、自己也使用的是濕紙巾,但要讓溼紙巾乾燥後再塞入布口罩使用。
一般「不織布」的過濾效果雖然比不上醫療口罩使用的「熔噴不織布」,陳醫師解釋,病毒在空氣中微乎其微,要是彼此都沒有呼吸道症狀、發燒,布口罩加上濾材就很夠用了。
全文:https://supertaste.tvbs.com.tw/topic/article/321258 - #32 [winning7], 20-02-29 15:57
陳醫師 仍然未明熔噴不織布層是帶靜電功能...n95 都帶靜電功能
不過買不倒口罩下, 有布口罩+不同濾料都好過重用口罩多次
片中6:17 有示範工業用 熔噴不織布靜電功能....不過我覺得佢咁整最好前後層各加防水不織布夾住 filter 共3層好d,
防水不織布有30g, 40g選...30g已很薄透氣又防水
仲有 filter層最好突出布口罩少少....細細塊咁放入去是無用的
最後修改時間: 2020-02-29 16:12:01 - #33 [winning7], 20-02-29 16:06
紙樣 download
https://drive.google.com/drive/folders/1MVJY4mwtFCFEMFlf3zx3yg_dJpbD4pNG
最後修改時間: 2020-02-29 16:11:11 - 返回 ...
睇返 [#16] 條 link 死咗,搵過另一條,段片一樣。