SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
N95 Respirator: Melt-Blown, Charged and Welded
The filter of an N95 respirator is nonwoven polypropylene made by melt blowing: molten polymer is pushed through a spinneret and jets of hot air stretch it into very fine fibres that land on a moving belt as a web. The fibres carry an electric charge, an electret, which helps them catch particles; charges can be put on such materials by corona discharge. Typical filter layers weigh 10–100 g per square metre. The filter is layered between cover webs, cut and ultrasonically welded; an aluminium strip is sealed in at the top as a nose clip, and the straps are stapled on.
Juu
Factory process
Maagizo
1
1
Melt-blow the filter
Melt-blow the filter
Melt polypropylene, extrude it through a spinneret and stretch it into fine fibres with hot air onto a moving belt.
Vifaa kwa hatua hii:
Chembechembe za polipropilini1 kgZana zinazohitajika:
Mstari wa kupuliza kiyeyuko (meltblown)2
2
Charge
Charge
Give the filter web an electret charge.
Zana zinazohitajika:
Kifaa cha kuchaji kwa korona3
3
Layer and weld
Layer and weld
Ply the filter between the cover webs in order, cut the stack and weld it ultrasonically.
Vifaa kwa hatua hii:
Utando wa kufunika usiofumwa1 kipandeZana zinazohitajika:
Mashine ya kuunganisha plastiki kwa mawimbi ya sauti4
4
Nose clip and straps
Nose clip and straps
Seal a soft aluminium strip in along the top as the nose clip, and staple on the straps.
Vifaa kwa hatua hii:
Utepe wa alumini wa kibano cha pua1 kipande
Kamba ya mpira0.6 mVifaa
4- Kishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 0.6 mKishikilia Nafasi
Zana Zinazohitajika
3- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.