Abstract: Daim ntawv no tshuaj xyuas qhov teeb meem dawb ntawm cov yeeb yaj kiab sib xyaw ntawm PET / VMCPP thiab PET / VMPET / PE thaum lawv sib xyaw, thiab qhia txog cov kev daws teeb meem sib xws.
Cov yeeb yaj kiab sib xyaw ua ke txhuas yog cov khoom ntim khoom mos uas muaj "lub teeb ci ntsa iab txhuas" uas tsim los ntawm kev sib xyaw cov yeeb yaj kiab txheej txhuas (feem ntau yog VMPET / VMBOPP, VMCPP / VMPE, thiab lwm yam, uas VMPET thiab VMCPP yog cov siv ntau tshaj plaws) nrog cov yeeb yaj kiab yas pob tshab. Nws yog siv rau kev ntim khoom noj, cov khoom noj khoom haus, cov tshuaj pleev ib ce, thiab lwm yam khoom. Vim nws cov xim ci ntsa iab zoo heev, yooj yim, pheej yig, thiab kev ua haujlwm zoo, nws tau siv dav (cov khoom thaiv zoo dua li cov yeeb yaj kiab yas sib xyaw, pheej yig dua thiab sib dua li cov yeeb yaj kiab txhuas-yas sib xyaw). Txawm li cas los xij, cov pob dawb feem ntau tshwm sim thaum lub sijhawm tsim cov yeeb yaj kiab sib xyaw ua ke txhuas. Qhov no pom tseeb tshwj xeeb hauv cov khoom sib xyaw ua ke nrog PET / VMCPP thiab PET / VMPET / PE cov qauv.
1. Cov ua rau thiab cov kev daws teeb meem ntawm "cov pob dawb"
Kev piav qhia txog qhov xwm txheej "qhov chaw dawb": Muaj cov chaw dawb pom tseeb ntawm qhov tsos ntawm cov yeeb yaj kiab sib xyaw, uas tuaj yeem faib tawm random thiab loj sib npaug. Tshwj xeeb tshaj yog rau cov yeeb yaj kiab sib xyaw tsis luam tawm thiab cov kua dawb puv lossis cov yeeb yaj kiab sib xyaw xim sib xyaw, nws pom tseeb dua.
1.1 Tsis txaus qhov nro ntawm qhov chaw ntawm sab txhuas plating ntawm cov txheej txhuas.
Feem ntau, kev sim qhov nro ntawm qhov chaw yuav tsum tau ua rau ntawm qhov chaw corona ntawm zaj duab xis siv ua ntej sib xyaw, tab sis qee zaum kev sim ntawm cov txheej txheem txhuas raug tsis quav ntsej. Tshwj xeeb tshaj yog rau cov yeeb yaj kiab VMCPP, vim muaj qhov ua tau ntawm cov khoom me me molecular nag lossis daus hauv zaj duab xis CPP, qhov chaw txhuas plated ntawm VMCPP zaj duab xis khaws cia rau ib lub sijhawm yog qhov tsis txaus nro.
1.2 Kev sib txhuam tsis zoo
Cov nplaum uas muaj cov tshuaj yaj yuav tsum xaiv qhov kev ua haujlwm zoo tshaj plaws raws li phau ntawv qhia khoom kom ntseeg tau tias cov kua nplaum zoo tshaj plaws. Thiab kev tswj xyuas kev ntsuas viscosity yuav tsum tau siv thaum lub sijhawm tsim khoom sib xyaw tas mus li. Thaum cov viscosity nce ntxiv ntau, cov tshuaj yaj yuav tsum tau ntxiv tam sim ntawd. Cov lag luam uas muaj cov xwm txheej tuaj yeem xaiv cov khoom siv kua nplaum twj tso kua nplaum. Qhov kub zoo tshaj plaws rau cov nplaum uas tsis muaj tshuaj yaj yuav tsum tau xaiv raws li phau ntawv qhia khoom. Tsis tas li ntawd, xav txog qhov teeb meem ntawm lub sijhawm ua haujlwm tsis muaj tshuaj yaj, tom qab lub sijhawm ntev, cov kua nplaum hauv lub menyuam ntsuas yuav tsum tau tso tawm raws sijhawm.
1.3 Cov txheej txheem sib xyaw tsis zoo
Rau cov qauv PET/VMCPP, vim yog qhov tuab me me thiab yooj yim nthuav dav ntawm zaj duab xis VMCPP, lub siab ntawm lub lamination roller yuav tsum tsis txhob siab dhau thaum lub sijhawm lamination, thiab qhov nro ntawm winding yuav tsum tsis txhob siab dhau. Txawm li cas los xij, thaum cov qauv PET/VMCPP yog sib xyaw, vim tias zaj duab xis PET yog zaj duab xis nruj, nws raug nquahu kom nce lub siab ntawm lub laminating roller thiab qhov nro ntawm winding kom haum thaum lub sijhawm sib xyaw.
Cov txheej txheem sib xyaw ua ke yuav tsum tau tsim raws li qhov xwm txheej ntawm cov khoom siv sib xyaw thaum cov qauv txheej txhuas sib txawv yog sib xyaw.
1.4 Cov khoom txawv teb chaws nkag mus rau hauv zaj duab xis ua rau muaj "cov pob dawb"
Cov khoom txawv teb chaws feem ntau muaj xws li plua plav, cov roj hmab me me, lossis cov khib nyiab. Cov plua plav thiab cov khib nyiab feem ntau los ntawm lub chaw ua haujlwm, thiab feem ntau yuav tshwm sim thaum lub chaw ua haujlwm huv tsis zoo. Cov roj hmab me me feem ntau los ntawm cov roj hmab discs, cov menyuam txheej, lossis cov menyuam sib txuas. Yog tias lub Hoobkas sib xyaw tsis yog lub chaw ua haujlwm tsis muaj plua plav, nws kuj yuav tsum sim ua kom huv thiab huv si ntawm lub chaw ua haujlwm sib xyaw, nruab cov khoom siv tshem tawm plua plav lossis lim dej (cov cuab yeej tshem tawm plua plav, cov menyuam qhia, cov cuab yeej sib txuas thiab lwm yam khoom) rau kev ntxuav. Tshwj xeeb tshaj yog cov menyuam txheej, scraper, cov menyuam flattening, thiab lwm yam yuav tsum tau ntxuav tsis tu ncua.
1.5 Cov av noo ntau hauv lub chaw ua haujlwm tsim khoom ua rau muaj "cov pob dawb"
Tshwj xeeb tshaj yog thaum lub caij los nag, thaum lub chaw ua haujlwm av noo yog ≥ 80%, cov zaj duab xis sib xyaw ua ke yuav muaj "cov pob dawb" ntau dua. Nruab ib lub ntsuas kub thiab av noo hauv chaw ua haujlwm kom sau cov kev hloov pauv ntawm qhov kub thiab av noo, thiab xam qhov muaj peev xwm ntawm cov pob dawb tshwm sim. Cov lag luam uas muaj cov xwm txheej tuaj yeem xav txog kev teeb tsa cov khoom siv dehumidification. Rau cov qauv sib xyaw ua ke ntau txheej nrog cov khoom thaiv zoo, nws yog qhov tsim nyog los xav txog kev ncua kev tsim khoom lossis tsim cov qauv sib xyaw ua ke ntau txheej lossis sib xyaw ua ke. Tsis tas li ntawd, thaum ua kom ntseeg tau tias cov nplaum ua haujlwm zoo li qub, nws raug pom zoo kom txo cov tshuaj kho kom zoo, feem ntau yog 5%.
1.6 Qhov chaw nplaum
Thaum tsis pom muaj qhov txawv txav pom tseeb thiab qhov teeb meem ntawm "cov pob dawb" tsis tuaj yeem daws tau, cov txheej txheem txheej txheej ntawm sab txheej txhuas tuaj yeem xav txog. Tab sis cov txheej txheem no muaj cov kev txwv tseem ceeb..Tshwj xeeb tshaj yog thaum VMCPP lossis VMPET txhuas txheej raug cua sov thiab nruj hauv qhov cub, nws yooj yim rau tensile deformation, thiab cov txheej txheem sib xyaw yuav tsum tau hloov kho. Tsis tas li ntawd, lub zog tev ntawm cov txheej txhuas plating yuav txo qis.
1.7 Cov lus piav qhia tshwj xeeb rau qhov xwm txheej uas tsis pom muaj qhov tsis zoo tom qab kaw, tab sis "cov pob dawb" tshwm sim tom qab loj hlob:
Hom teeb meem no feem ntau tshwm sim hauv cov qauv membrane sib xyaw nrog cov khoom thaiv zoo. Rau PET / VMCPP thiab PET / VMPET / PE cov qauv, yog tias cov qauv membrane tuab, lossis thaum siv KBOPP lossis KPET zaj duab xis, nws yooj yim los tsim "cov pob dawb" tom qab laus.
Cov yeeb yaj kiab sib xyaw ua ke uas muaj kev thaiv siab ntawm lwm cov qauv kuj muaj teeb meem zoo ib yam. Piv txwv li suav nrog kev siv cov ntawv ci txhuas tuab lossis cov yeeb yaj kiab nyias xws li KNY.
Qhov laj thawj tseem ceeb rau qhov "qhov chaw dawb" no yog tias muaj cov pa roj tawm hauv cov txheej txheem sib xyaw. Cov pa roj no tej zaum yuav yog cov tshuaj seem lossis cov pa roj carbon dioxide uas tsim los ntawm kev sib xyaw ntawm cov tshuaj kho thiab cov pa dej. Tom qab cov pa roj puv, vim yog cov khoom thaiv zoo ntawm cov zaj duab xis sib xyaw, nws tsis tuaj yeem tso tawm, ua rau pom cov "qhov chaw dawb" (npuas) hauv cov txheej txheem sib xyaw.
Kev daws teeb meem: Thaum sib xyaw cov kua nplaum uas muaj cov kuab tshuaj, cov txheej txheem xws li qhov kub ntawm qhov cub, qhov ntim cua, thiab qhov siab tsis zoo yuav tsum tau teeb tsa zoo kom ntseeg tau tias tsis muaj cov kuab tshuaj seem hauv cov txheej nplaum. Tswj cov av noo hauv lub chaw ua haujlwm thiab xaiv lub kaw lus txheej nplaum kaw. Xav txog kev siv tus neeg sawv cev kho uas tsis tsim cov npuas. Tsis tas li ntawd, thaum siv cov kua nplaum uas muaj cov kuab tshuaj, nws yog qhov tsim nyog los sim cov dej noo hauv cov kuab tshuaj, nrog rau qhov yuav tsum tau muaj cov dej noo ≤ 0.03%.
Qhov saum toj no yog kev qhia txog qhov tshwm sim ntawm "cov pob dawb" hauv cov yeeb yaj kiab sib xyaw, tab sis muaj ntau yam laj thawj uas tuaj yeem ua rau muaj teeb meem zoo li no hauv kev tsim khoom tiag tiag, thiab nws yog qhov tsim nyog los txiav txim siab thiab txhim kho raws li qhov xwm txheej tsim khoom tiag tiag.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-11-2023