一、kn95口罩是什么材質做的
通常口(kou)罩(zhao)是無紡布(bu)(bu)材料(liao),其原料(liao)全部都(dou)是聚丙(bing)烯(xi),KN95口(kou)罩(zhao)也(ye)不例外(wai),它是一(yi)個生產口(kou)罩(zhao)的執行(xing)標準,制作(zuo)材料(liao)也(ye)是無紡布(bu)(bu),原料(liao)也(ye)是聚丙(bing)烯(xi),并沒(mei)有什么(me)其他特殊(shu)的材料(liao),只(zhi)不過是比普通口(kou)罩(zhao)多了幾(ji)層(ceng)(ceng)過濾層(ceng)(ceng)。
常見的醫用(yong)口(kou)罩(zhao),主要由(you)三層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)無(wu)紡(fang)(fang)(fang)布組成(cheng):內層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(吸濕層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng))是(shi)(shi)普通無(wu)紡(fang)(fang)(fang)布;外層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(阻水層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng))是(shi)(shi)做(zuo)了防水處理(li)的無(wu)紡(fang)(fang)(fang)布,主要用(yong)于隔絕他(ta)人噴(pen)出的液體飛(fei)沫(mo);中間的過(guo)濾層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(核(he)心過(guo)濾層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng))用(yong)的是(shi)(shi)經過(guo)駐極處理(li)的聚(ju)丙烯(xi)熔噴(pen)無(wu)紡(fang)(fang)(fang)布,一般簡稱(cheng)為SMS結構(gou)(S表示紡(fang)(fang)(fang)粘層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng),M表示熔噴(pen)層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)),換句話(hua)說,口(kou)罩(zhao)至少應該是(shi)(shi)3層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng),即2層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)S層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)和(he)1層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)M層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)。而作為防護(hu)級別相當(dang)高(gao)的KN95口(kou)罩(zhao),是(shi)(shi)用(yong)聚(ju)丙烯(xi)無(wu)紡(fang)(fang)(fang)布SMMMS(2層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)S層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)和(he)3層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)M層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng))制作成(cheng)的、能過(guo)濾超過(guo)95%微細顆粒的5層(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)(ceng)口(kou)罩(zhao)。
二、如何辨別kn95口罩真假
kn95口罩雖然不(bu)(bu)像之前(qian)那(nei)么緊缺,但(dan)是市面(mian)上的(de)假kn95口罩也不(bu)(bu)少,下面(mian)來講(jiang)講(jiang)Kn95口罩真假辨別的(de)方法,這些也是購買時必(bi)須(xu)知道的(de)技巧。
1、首(shou)先看一下KN95口罩或(huo)是(shi)包裝上是(shi)否有GB2626-2019的字(zi)樣(yang),這是(shi)國家要求的標準。
2、其次正品KN95口(kou)罩的(de)帶是(shi)壓(ya)制的(de),不是(shi)縫制的(de),同時第一次帶上(shang)后會比較緊。
3、再看一下KN95口罩(zhao)的鼻托,正品的KN95口罩(zhao)鼻托比較粗(cu),壓下后不會(hui)(hui)變形(xing),帶上會(hui)(hui)比較舒適。
4、另外正品的KN95口罩的外表面(mian)會有KN95的字(zi)樣,字(zi)樣清晰可(ke)見(jian)。
5、正品的(de)KN95口罩內層(ceng)沒有任何字(zi)樣,同時(shi)呼(hu)吸口比較深(shen),在鼻子位置還會有舒適的(de)棉墊。
6、正品的KN95口罩四周的(de)鎖邊(bian)清(qing)晰可見,深度(du)也(ye)深一些,而假(jia)貨(huo)的(de)四周鎖邊(bian)不清(qing)晰。