Machira asina kurukwa anosanganisira polyester, polypropylene, naironi, spandex, acrylic, nezvimwewo zvichibva pakuumbwa kwawo; Zvigadzirwa zvakasiyana zvichave nemhando dzakasiyana zvachose dzemachira asina kuruka. Kune akawanda maitiro ekugadzira ekugadzira machira asiri akarukwa, uye kunyungudutswa kwakaputirwa jira risiri rakarukwa inzira yekunyunguduka inoputika nzira. Iyo ndeimwe yeasina-akarukwa machira ekugadzira machira uye zvakare imwe yeakananga polymer mesh yekugadzira nzira. Iyo ndiyo nzira yekuburitsa polymer kunyungudika kubva kune screw extruders kuburikidza nekumhanya-mhanya uye yakakwirira-tembiricha kufefetera kwemhepo kana imwe nzira yekukonzeresa kutatamuka kwekunyunguduka kuyerera uye kuumba mafiritsi akanyanya kunaka, ayo anobva aungana pamesh achigadzira chigubhu kana mesh keteni kugadzira fiber mesh, Chekupedzisira, iyo yakanyungudutswa yakafemerwa fiber jira risiri rakarukwa rinosimbiswa nekuzvibatanidza.
Mucheka wakanyunguduka wakanyunguduka unonyanya kugadzirwa nepolypropylene sechinhu chikuru mbishi, uye iyo fiber dhayamita inogona kusvika 1-5 microns. Iwo ekupedzisira-akatsetseka mafiber ane akasiyana capillary zvimiro, senge akawanda voids, fluffy chimiro, uye yakanaka wrinkle kuramba, anowedzera huwandu uye pamusoro penzvimbo yefiber pachikamu cheyuniti, nekudaro ichiita kuti jira rakanyungudutswa rive nekusefa kwakanaka, kudzivirira, kuvhara, uye kunyudza mafuta. Inogona kushandiswa muminda senge mhepo uye mvura yekusefa zvinhu, zvekuzviparadzanisa nevamwe, zvinonwisa zvinhu, mask zvinhu, zvekudzivirira, zvinhu zvinotora mafuta, uye machira ekupukuta.
Iyo fiber dhayamita yeyakanyunguduka yakavhuvhuta yakanyatsonaka, yakatenderedza 2 microns (um), saka inongori chikamu chimwe mugumi chedhayamita yespunbond layer. Iyo yakatsetseka yakanyungudutswa yakapeperetswa layer, iyo inowedzera inogona kuvharira kupinda kwezvidimbu zvidiki. Semuenzaniso, iyo KN95 mask inoreva kuyerera kwe85L inogona kuvhara 95% yezvidiki zvidiki (0.3um) mumamiriro ezvinhu akajairwa. Izvi zvine basa rakakosha mukusefa mabhakitiriya nekudzivirira kupinda muropa, ndosaka ichinzi moyo wemask.
Traditional process flow
Polymer feeding → Kunyunguduka extrusion → Kugadzira Fiber → Fiber kutonhora → Mesh maumbirwo → Bonding (yakagadzika mesh) → Kucheka kwemupendero uye kumonereka
Polymer feeding - PP polymer mbishi zvinhu zvinowanzogadzirwa kuita diki spherical kana granular zvimedu, zvinodururwa mumabhaketi kana hopper, uye kudyiswa mune screw extruders.
Melt extrusion - Pakupera kwekudya kwescruder extruder, machipisi epolymer anosanganiswa nezvinhu zvinodiwa mbishi senge stabilizers, whitening agents, uye color masterbatch. Mushure mekunyatso kurungidzira nekusanganisa, vanopinda screw extruder vodziirwa pakupisa kwepamusoro kuti vanyunguduke. Pakupedzisira, kunyungudika kunodyiswa muspinneret kuburikidza nesefa nepombi yemamita. Mukunyunguduka kunoputika maitiro, maextruder anowanzo dzikisa huremu hwemapolymers kuburikidza nekuveura kwavo uye kushatisa kwemafuta.
Fiber formation - Iyo yakasefa yakachena melt inoda kuenda kuburikidza neyekugovera sisitimu uye yobva yapihwa zvakaenzana muboka rega rega re spinnerets, kuitira kuti iyo extrusion huwandu hweimwe spinneret hole inoenderana. The spinneret plate for melt blown fibers yakasiyana nedzimwe nzira dzekutenderera mukuti maburi e spinneret anofanirwa kurongeka mumutsara wakatwasuka, ane maburi ekuyerera kwemhepo akakwira kumativi ose maviri.
Fiber kutonhora - Iyo yakawanda yemhepo tembiricha yekamuri inosvetwa mukati memativi ese espinneret, yakasanganiswa nemhepo inopisa inoyerera ine ultrafine fibers kuti itonhodze pasi, uye iyo yakanyungudutswa ultrafine fiber inotonhodzwa uye yakaoma.
Webhu magadzirirwo - Mukugadzirwa kweakanyunguduka akafemerwa machira asina kuruka, spinneret inogona kuiswa yakatwasuka kana yakatwasuka. Kana akaiswa akachinjika, ipapo ultrafine fibers inopfapfaidzwa pane denderedzwa rekuunganidza dhiramu kuita mesh; Kana akaiswa pasi, mafiibhi anowira pajira rakachinjika rinofambisa mesh keteni uye anonamira kuita mesh.
Adhesive (fixed mesh) - The self adhesive reinforcement yakataurwa pamusoro inokwana kune zvimwe zvinangwa zvekunyunguduka machira akaputika, zvakadai sekuda kuti fiber mesh ive nechimiro chakapfava, kuchengetedza mhepo yakanaka kana porosity, etc. Nokuda kwezvimwe zvinangwa zvakawanda, self-adhesive reinforcement chete haina kukwana, uye kupisa kunopisa kubatanidza kubatanidza, ultrasonic reinforced inodiwawo.
Nguva yekutumira: Zvita-15-2023