Kev kho mob tiv thaiv lub ntsej muag yog cov ntaub uas tsis yog-ntaub, uas yog cov ua kom muaj qhov sib txawv lossis cov ntaub ua ntu, thiab feem ntau yog txheej txheem ua ke, feem ntau tsuas yog hu ua SMS qauv. Tam sim no, cov kab ntau tshaj plaws yog 5 txheej, uas yog, SMMMS (spunbond, meltblown) yog tsim ntawm polypropylene. M txheej siv meltblown nonwoven npuag ua txheej txheej. Vim tias nws cov fibers yog faib faib thiab muaj peb qhov loj me, qhov loj tshaj yog tias nws yog li ntawm ultrafine fiber, qhov tshwj xeeb thaj tsam ntawm cov fiber ntau, thiab muaj peev xwm adsorb hais yog qhov xav tau; Cov fibers muaj ntau faib los tsim cov loj loj ntawm cov khoob me me, thiab qhov ntev xa tawm yog qhov tsis sib xws, cov lim pore loj me me, thiab cov txiaj ntsig lim tau zoo, yog li cov lim ntawm kev ua haujlwm ntawm qhov tsis-woven kev tiv thaiv kev tiv thaiv npog yog nyob deb. los ntawm cov tsoos daim npog npog ncauj.
SMS tsis-siv npuag siv polypropylene (nrog ntuj bacteriostasis thiab hydrophobicity) yog cov khoom siv tseem ceeb, thiab cov khoom siv fiber ntau tuaj yeem ncav cuag 0.5-10um. Cov roj ntsha ultrafine nrog cov qauv tshwj xeeb capillary nce tus naj npawb thiab ntev ntawm cov fibers hauv ib cheeb tsam, kom cov fused laser npav nto yog cov ntaub tsis-ntaub ntawm S txheej polypropylene khoom. Txau daim ntaub muaj cua zoo ua kom zoo thiab yog cov khoom siv zoo rau ntau lub ntsej muag.
Ib yam li tag nrho cov khoom siv kho mob thiab kev noj qab haus huv, los tiv thaiv kev cuav yog qhov tseem ceeb ntawm cov npog ntsej muag.
Niaj hnub no, piv nrog cov kua mem tshuab luam ntawv tshiab, cim laser muaj cov yam ntxwv ntawm tsis muaj kuab lom, tsis muaj kuab paug, kev ua haujlwm siab, kev daws teeb meem, siab kawg, thiab hnav tsis kam. teeb meem. Nws tuaj yeem hais tau tias laser npav tshuab thev naus laus zis tau txhawb nqa kev lag luam kev kho mob txij thaum nws yug los.
Lub hauv paus ntsiab lus ntawm laser npav thev naus laus zis yog tshwj xeeb rau irradiate saum npoo ntawm cov khoom siv nrog lub laser nrog lub zog siab, kom cov nplaim ntawm cov khoom yog vaporized rau cov khoom sib sib zog nqus, los yog tshuaj lom neeg cov tshuaj tiv thaiv ntawm cov khoom ntawm cov khoom undergoes a xim hloov nyob rau hauv cov nyhuv ntawm lub teeb irradiation. Vim tias kev ua cov laser yog kev sib tiv tauj tsis zoo, lub cuab yeej yuav tsis cuam tshuam nrog kev sib txhuam ncaj qha ntawm cov workpiece saum npoo, yog li laser kev ua haujlwm nrawm heev, thiab cov khoom ua tiav raug cuam tshuam los ntawm tshav kub hauv ib qho me me thiab tsis tsim suab nrov Cov. Cov. Vim qhov kev hloov kho lub zog ntawm lub nqaj laser thiab kev txav ceev ntawm nqaj, kev ua cov laser tuaj yeem thov rau ntau qib thiab ntau qib.
Tam sim no, muaj ob txoj cai lees txais laser ua: laser thermal ua thiab photochemical ua (tseem hu ua txias ua). Lingxiu Laser xaiv luv-wavelength ultraviolet laser rau npav ua cov txheej txheem.
Thaum lub luv-wavelength ultraviolet laser ua rau lub polymer, nws ncaj qha tsoo cov tshuaj sib txuas ntawm cov khoom, kom cov khoom tawg yooj yim hloov mus rau hauv qhov me me los yog cov pa roj, thiaj li ua tiav lub hom phiaj hloov thiab tshem tawm cov khoom , yog li ua kom muaj lub ntsej muag kom du, ntshiab thiab nyeem tau sab hauv cov khoom. Txij li feem ntau ntawm lub zog siv los rhuav tshem cov ntawv cog qoob loo, lub zog me me yog hloov mus rau lub zog cua sov, uas tuaj yeem tshem tawm qhov kev hloov pauv ntawm thaj chaw muaj cua sov (HAZ) thiab cov ntaub ntawv ib puag ncig, kom ntseeg tau tias cov khoom yuav tsis deformed los ntawm tshav kub.
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.
Lub sij hawm tshaj tawm: Tsib Hlis-06-2020
