Aluminium Txheej txheej txheem

Cov txheej txheem txhuas plating ntawm cov yeeb yaj kiab yas feem ntau siv txoj kev plating ncaj qha, uas yog, txheej txheej txhuas yog ncaj qha plated rau ntawm qhov chaw ntawm lub substrate zaj duab xis. BOPET thiab BOPA zaj duab xis substrates tsis xav tau kev kho saum npoo ua ntej txhuas plating, thiab tuaj yeem ncaj qha evaporated. Rau cov yeeb yaj kiab uas tsis yog-polar xws li BOPP, CPP, thiab PE, qhov saum npoo ntawm zaj duab xis yuav tsum tau kho corona los yog coated nrog cov nplaum txheej ua ntej evaporation kom nws qhov nro ncav cuag 38-42 dynes / cm lossis muaj qhov zoo. adhesion. Thaum lub sij hawm evaporation, muab cov yob zaj duab xis tso rau hauv lub tshuab nqus tsev chamber thiab kaw lub tshuab nqus tsev kom tshem tawm. Thaum lub tshuab nqus tsev kawm ntawv nce mus txog ib theem (siab dua 4 × 10-4mba), ua kom sov lub nkoj evaporation mus rau 1300 degree ~ 1400 degree, thiab tom qab ntawd tsis tu ncua pub txhuas hlau nrog purity ntawm 99.9% rau lub nkoj evaporation. Kho lub unwinding ceev, winding ceev, xaim pub ceev thiab evaporation npaum li cas, qhib qhov cua txias, thiab ua rau cov txhuas hlau yaj thiab evaporate tsis tu ncua ntawm lub nkoj evaporation, thiaj li hais tias ib tug ci txhuas txheej yog tsim nyob rau hauv lub tsiv zaj duab xis nto tom qab txias, uas yog aluminium-plated zaj duab xis.
Txoj cai ntawm lub tshuab nqus tsev evaporation
Cov zaj duab xis substrate (cylindrical) yuav tsum tau plated yog muab tso rau hauv lub tshuab nqus tsev vacuum evaporation, thiab lub tshuab nqus tsev twj yog siv los tshem tawm cov zaj duab xis mus rau ib tug nqus degree ntawm 1.3 × 10-2 ~ 1.3 × 10-3Pa. Lub crucible yog rhuab kom yaj cov high-purity txhuas hlau ntawm qhov kub ntawm 1200 degree ~ 1400 degree thiab evaporate rau hauv gaseous txhuas. Cov pa roj carbon monoxide yog tso rau ntawm qhov chaw ntawm cov zaj duab xis txav mus rau substrate thiab txias thiab txo kom tsim tau ib qho txuas ntxiv thiab ci hlau txhuas txheej. Lub thickness ntawm aluminium txheej txheej yog tswj los ntawm kev tswj cov evaporation tus nqi ntawm cov hlau txhuas, kev txav ceev ntawm cov zaj duab xis substrate, thiab lub tshuab nqus tsev kawm ntawv ntawm txheej chamber. Feem ntau, lub thickness ntawm txhuas txheej txheej yog 25 ~ 500nm, thiab qhov dav ntawm aluminium zaj duab xis yog 800mm ~ 2000mm.
Txoj kev evaporation: Muaj ob txoj hauv kev rau evaporating txhuas rau ntawm qhov chaw ntawm lub substrate: ncaj qha evaporation txoj kev thiab hloov txoj kev.
(1) Direct evaporation txoj kev. Lub substrate yuav tsum tau plated ncaj qha dhau los ntawm lub tshuab nqus tsev txheej, thiab cov hlau txhuas yog evaporated rau saum npoo ntawm substrate los ua ib zaj duab xis aluminium. Txoj kev ncaj qha evaporation muaj cov kev xav tau siab rau lub substrate, tshwj xeeb tshaj yog tsim cov yeeb yaj kiab hlau ci, lub substrate yuav tsum muaj qhov zoo ntawm qhov smoothness. Yog tias daim ntawv saum npoo yog ntxhib, txoj kev ncaj qha evaporation yuav tsum tau siv, thiab saum npoo yuav tsum tau coated ua ntej txhuas plating. Tsis tas li ntawd, qhov teeb meem tsis hloov pauv ntawm lub substrate yuav tsum tsawg dua thaum lub sij hawm evaporation txheej txheem. Yog li ntawd, txoj kev ncaj qha evaporation muaj kev txwv loj ntawm lub substrate. Nws yog qhov tsim nyog rau evaporation ntawm cov yeeb yaj kiab yas thiab tseem tuaj yeem siv rau evaporation ntawm daim ntawv, tab sis cov ntawv xav tau zoo yog siab thiab muaj qee qhov txwv ntawm cov ntawv ntau.
(2) Hloov txoj kev. Nws yog los hloov cov hlau txhuas txheej rau saum npoo ntawm lub substrate nrog kev pab los ntawm ib tug cab kuj (lub tshuab nqus tsev aluminium zaj duab xis) los tsim ib tug txhuas zaj duab xis. Txoj kev hloov pauv yog txheej txheem tshiab tsim los ntawm txoj kev ncaj qha evaporation. Nws kov yeej cov kev txwv ntawm txoj kev ncaj qha evaporation ntawm cov txheej txheem substrate. Nws yog tshwj xeeb tshaj yog haum rau txhuas plating ntawm ntau yam ntaub ntawv thiab paperboards, thiab kuj siv tau rau txhuas plating ntawm yas zaj duab xis. Cov teb chaws txawv teb chaws tau siv txoj kev hloov mus rau txhuas-plated cov khoom ntawm substrates xws li ntaub, fiber, thiab tawv. kuv lub teb chaws tsuas yog siv txoj kev hloov mus los tsim cov ntawv txhuas-plated. [1]
Aluminium-coated zaj duab xis ntau lawm txheej txheem:
Substrate unwinding → nqus tsev → cua sov evaporation nkoj → noj txhuas hlau → evaporation → txias → thickness ntsuas → flattening → winding