Imaski yokuvikela ukwelashwa iyindwangu engeyona eyokwelukiweyo, ehlanganiswa yimicu ethambekele noma engahleliwe, futhi imvamisa iyisakhiwo senethiwekhi eningi, imvamisa ibizwa ngokuthi isakhiwo se-SMS. Njengamanje, inani eliphakeme kakhulu lezendlalelo liyizingqimba ezi-5, okungukuthi, ama-SMMMS (spunbond, meltblown) akhiwa nge-polypropylene. Isendlalelo se-M sisebenzisa indwangu ye-meltblown nonwoven njengendlu yokuhlunga. Ngoba imicu yayo isatshalaliswa ngokungahleliwe futhi inesayizi eyinkimbinkimbi enobukhulu obuthathu, isici esikhulu kunazo zonke ukuthi ihlanganiswe ngemicu ye-ultrafine, indawo ethize yele fiber, kanye nekhono lezinhlayiyana ze-adsorb; Imicu isatshalaliswa ngokungahleliwe ukuze yakhe inani elikhulu lezinikhala ezincane, futhi ubude buhlukaniswe, usayizi we-pore wokuhlobisa mncane, futhi ukusebenza kahle kokuhlunga kuphezulu, ukuze ukusebenza kokuhlunga kwemaski yokuvikela yezokwelapha okungewona owenziwe kude kukude kusuka kumaski we-gauze wesiko.
Indwangu engeyona eyokwakhiwa nge-SMS isebenzisa i-polypropylene (ene-bacteriostasis yemvelo kanye ne-hydrophobicity) njengezinto eziyisihluthulelo main, kanti ububanzi be-fiber bungafinyelela ku-0.5-10um. Le micu ye-ultrafine enesakhiwo esiyingqayizivele se-capillary yandisa inani nobude bemicu endaweni ngayinye yendawo, ukuze indawo yokumaka i-laser efakwe indwangu engeyona eyalwayo ye-S layer polypropylene material. Indwangu yesifutho inokuhlunga komoya okuhle futhi iyinto enhle kumamaski amaningi.
Njengayo yonke imikhiqizo yezokwelapha neyempilo, amamaki wokulwa nomgako ayingxenye ebalulekile yemikhiqizo kamaski.
Namuhla, uma kuqhathaniswa nobuchwepheshe bendabuko bokuphrinta uyinki, ukumaka i-laser kunezimpawu zokungezona ezinobuthi, ezingangcolisi, ukusebenza kahle kakhulu, ukulungiswa okuphezulu, ukuphakama okuphezulu, nokumelana nokugqokwa. inkinga. Kungashiwo ukuthi ubuchwepheshe bokumaka i-laser bebuhambisa imboni yezokwelapha selokhu yazalwa.
Umgomo wobuchwepheshe bokumaka i-laser ngokuyinhloko ukufuthelisa ingaphezulu lezinto nge-laser enamandla amakhulu abantu, ukuze ingaphezulu lezinto lisebenze ukuveza izinto ezijulile, noma ukusabela kwamakhemikhali okungaphezulu kwendawo kwenzeka ukuguqulwa kombala ngaphansi komphumela we-irradiation okhanyayo. Ngoba ukucubungula kwe-laser ukucubungula okungahambelani nabo, ithuluzi ngeke liphazamise ukuxabana okuqondile kwendawo yokusebenza, ngakho-ke ijubane lokufaka i-laser lishesha kakhulu, futhi into yokuphazamiseka ithintwa ukushisa ebangeni elincane futhi ayakhiqizi umsindo . . Ngenxa yokulungiswa kwamandla kogongolo lwe-laser kanye nesivinini esihambayo sogongolo, ukucubungula kwe-laser kungasebenza emazingeni ahlukahlukene nobubanzi.
Njengamanje, kunemigomo emibili eyamukelekayo yokusebenzisa i-laser: ukucubungula kwe-laser thermal kanye nokusebenza kwe-photochemical (okwaziwa nangokuthi ukucubungula okubandayo). I-Lingxiu Laser ikhethe i-short-wavelength ultraviolet laser yenqubo yokumaka.
Lapho i-laser-wavelength efushane ye-ultraviolet isebenza ku-polymer, iphula ngokuqondile isibopho samakhemikhali sendawo, ukuze izingcezwana ezibonakalayo zidluliselwe ngesimo sezinhlayiya ezincane noma igesi, ukuze kufinyelelwe inhloso yokufaka okunye nokususa impahla , ngaleyo ndlela kukhiqizwa uphawu olubushelelezi, olucacile futhi olufundekayo ngaphakathi kokuqukethwe. Njengoba iningi lamandla lisetshenziselwa ukuphula izibopho zamakhemikhali, amandla amancane kakhulu aguqulwa abe amandla okushisa, angaqeda izinguquko endaweni yokuthinteka kokushisa (i-HAZ) nezinye izinto ezizungezile, aqinisekise ukuthi izinto zokwakha ngeke zonakaliswa ukushisa.
Cold working (ultraviolet) photons with high load energy can break the chemical bonds inside the material (especially organic materials) or the surrounding medium, causing non-thermal process damage to the material. This kind of cold working is of special significance in laser marking, because it is not thermal ablation, but it does not produce "thermal damage" auxiliary, cold peeling that breaks the chemical bond, so it does not affect the inner layer and the surrounding area of the processed surface layer. Produce heating or thermal deformation.
Because the transients generated by the hot processing light source cause damage to the outer and middle surface of the mask, which affects the filterability of the mask, the Lingxiu Laser replaces the "cold processing" ultraviolet laser to mark the surface layer of the mask.
Isikhathi sokuthumela: Meyi-06-2020
