Maski oteteza ku chipatala ndi nsalu yopanda nsalu, yomwe imapangidwa ndi ulusi wozungulira kapena wosasintha, ndipo nthawi zambiri imakhala yosanjikiza, nthawi zambiri imangodziwika ngati gawo la SMS. Pakadali pano, zigawo zazikulu kwambiri ndizigawo 5, ndiye kuti, SMMMS (spunbond, meltblown) zomwe zimapangidwa ndi polypropylene. Wosanjikiza wa M amagwiritsa ntchito nsalu ya meltblown nonwoven monga chosanjikiza. Chifukwa ulusi wake umagawidwa mwachisawawa ndipo uli ndi kukula kolimba mbali zitatu, gawo lalikulu ndikuti limapangidwa ndi ulusi wa ultrafine, gawo lenileni la fayilo, komanso kuthekera kwa adsorb tinthu tikuyembekezeredwa; Ulusiwo umagawidwa mwachisawawa kuti apange mipata yaying'ono kwambiri, ndipo kutalika kumagwirizana, kukula kwa pore ndi kocheperako, ndipo kusefa bwino ndikokwera, mwakuti ntchito yosefa ya chigoba chopanda mankhwala kuchokera pachikhalidwe chachigoba.
Nsalu yopanda ulusi ya SMS imagwiritsa ntchito polypropylene (yokhala ndi bacteriostasis yachilengedwe ndi hydrophobicity) ngati chinthu chachikulu chobiriwira, ndipo m'mimba mwake wa fiber amatha kufika pa 0.5-10um. Ulusi wa ultrafine wokhala ndi kapangidwe kake kapangidwe kake kamachulukitsa kuchuluka ndi kutalika kwa ulusi m'dera lililonse, kotero kuti chizindikiro cha laser chophatikizika ndi nsalu yopanda nsalu ya S wosanjikiza polypropylene. Kansalu kansalu kali ndi mpweya wabwino ndipo ndi chinthu chabwino kwa masks ambiri.
Monga momwe ziliri ndi mankhwala onse azachipatala, mankhwala ochepetsa nkhawa ndi gawo lofunikira pazogulitsa maski.
Masiku ano, poyerekeza ndiukadaulo wosindikizira wa inki, kuyika laser kumakhala ndi mawonekedwe osapweteketsa, osadetsa, kuyendetsa bwino kwambiri, kutsimikiza kwakukulu, kutsutsa kwakukulu. vuto. Titha kunena kuti ukadaulo wolemba laser wakhala ukupititsa patsogolo ntchito zamankhwala kuyambira kubadwa kwawo.
Mfundo zaukadaulo waukadaulo wa laser ndizowonjezera mkwiyo pa zinthuzo ndi laser yokhala ndi mphamvu yochulukirapo, kotero kuti pamwamba pa zinthuyo umatulutsa mphamvu kuti udziwitse zinthu zakuya, kapena mphamvu ya zinthu zakumaso kwa zinthuzo. Kusintha kwa utoto mothandizidwa ndi kuwala kwamitsuko. Chifukwa laser process is a non-touch process, chida sichingasokoneze kukangana mwachindunji kwa works workwork, kotero kuthamanga kwa laser kumathamanga kwambiri, ndipo chinthu chomwe chikugwiridwacho chimakhudzidwa ndi kutentha pang'ono ndipo sichimabweretsa phokoso . . Chifukwa cha kusintha kwa mphamvu ya mtengo wa laser komanso kuthamanga kwa mtengo, kuthamangitsa kwa laser kumatha kugwiritsidwa ntchito m'magawo osiyanasiyana komanso osiyanasiyana.
Pakadali pano pali mfundo ziwiri zovomerezeka za laser processing: laser thermal processing ndi Photochemical processing (imadziwikanso kuti yozizira pokonza). Lingxiu Laser adasankha laser yochepa-wavelength ultraviolet laser polemba ndondomeko.
Pamene laser-wavelength ya ultraviolet laser ikachitika pa polima, imathyola mwachindunji chomangira cha zinthuzo, kotero kuti zidutswazo zimasinthidwa mwa mawonekedwe a tinthu tating'onoting'ono kapena mpweya, kuti tikwaniritse cholinga chakuchotsa ndikuchotsa zinthuzo , potero amapanga chizindikiro chosalala, chowonekera komanso chowerengedwa mkati mwa nkhaniyo. Popeza mphamvu zambiri zimagwiritsidwa ntchito kuphwanya zomangira zamagetsi, mphamvu zochepa zimasinthidwa kukhala mphamvu yotentha, yomwe imathetsa masinthidwe pamagawo okhudzidwa ndi kutentha (HAZ) ndi zinthu zina zowazungulira, kuonetsetsa kuti zinthuzo sizingawonongeke ndi kutentha.
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.
Nthawi yolembetsa: Meyi-06-2020
