Tswj qhov seem ntawm qhov chaw mos qhov hnyav, cov ntsiab lus no yuav tsum tau muab tso rau hauv qhov chaw
Peb yog ib lub tuam txhab luam ntawv loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv xov xwm luam ntawv, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov khoom ntawv, cov ntawv me, cov ntawv nplaum, tag nrho hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
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Hnyav residues hauv yob yooj yim ntim yog tsuas yog muab los ntawm cov phev siv siv luam ntawv thiab cov khoom siv ua ke nrog. Cov tshuaj siv feem ntau hauv tshuab luam ntawv yog toluene, ethyl acetate, methyl ethyl ketone, isopropanol, xylene, thiab cov zoo li. Qhov hnyav feem ntau siv nyob rau hauv cov txheej txheem ester-soluble siv nyob rau hauv qhov chaw sib xyaw qhuav yog ethyl acetate, thiab cov hnoos uas siv hauv cov kua qaub cawv-tsim kab yog ethanol, methanol, thiab cov zoo li.
Cov teeb meem cuam tshuam hnyav residue hauv cov txheej txheem luam ntawv
1. Cov nyhuv ntawm cov khoom siv ntawm cov kua dej khov
Qhov hnyav haum ntawm zaj duab xis substrate. Lub peev xwm adsorption thiab adsorption qhov sib txawv ntawm zaj duab xis substrates sib txawv. Piv txwv li, PP zaj duab xis muaj peev xwm tawm tswv yim loj rau toluene, PA thiab PT films yog yooj yim rau adsorb cawv solvents, thiab PA thiab tsiaj cov yeeb yaj kiab muaj tsawg dua adsorption rau PP zaj duab xis dua PP zaj duab xis. Lub adsorption ntawm qhov hnyav los ntawm zaj duab xis substrate tseem cuam tshuam tus nqi ntawm qhov hnyav hauv lub pob muag.
Kev tso tawm ntawm tus number case nws tus kheej rau qhov hnyav. Qhov zoo dua qhov daws teeb meem ntawm qhov hnyuv nyob rau hauv cov cwj pwm, qhov zuj zus tso tawm ntawm cov khoom hnyav rau qhov hnyav. Cov tshuaj sib txawv muaj ntau cov khoom tso tawm rau cov kuab tshuaj, tshwj xeeb tshaj yog low-end inks uas tau tsim los ntawm qee tus qag manufacturers. Vim yog qib qis thiab pigment, qhov hnyav tso tawm yog pluag, thiab qhov hnyav ntawm qhov tshwm sim luam yog pluag. Tus nqi ntawm qhov seem yuav loj dua. Yog li, ua ntej xaiv cov phom, flexible ntim cov tuam txhab yuav tsum to taub zoo dua cov kua tshuaj tawm ntawm lawv cov khoom siv ntim khoom rau cov tuam txhab lag luam kom thiaj li nrog lawv. Tsis tas li ntawd, cov kua tshuaj tso tawm ntawm cov xim muaj ntau yam xim hauv tib lub cwj mem xiav kuj txawv dua qub, thiab cov kua xoos ntawm cov xim liab thiab tus cwj mem kua dub yog cov neeg pluag, uas yog vim muaj cov xim me me ntawm cov xim liab thiab tus cwj mem dub, thiab qhov loj ntawm qhov chaw deg. Muaj peev xwm tshaj tawm muaj peev xwm. Qhov kev ntsuas kub ntawm qhov sib xyaw xyaw hauv tus cwj mem. Ntau cov tshuaj siv tau xyaw rau hauv tus number case, hu ua mixed solvents. Qhov volatilization tus nqi ntawm qhov sib xyaw sib xyaw ua muaj kev cuam tshuam txog qhov kawg hnyav residue ntawm lub pob ywj pheej. Yog tias qhov qaug ziab hnyav yog siv ntau heev hauv tus cwj pwm, qhov hnyav kawg ntawm cov khoom siv ywj pheej yuav loj dua. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tsum tau xaiv thiab tsim hom thiab qhov feem pua ntawm hnyav ntawm tus cwj mem.
2. Cov khoom ntawm cov tsim graphic thiab cov qauv khoom ntawm cov dej hauv qhov seem
Feem ntau, nws tsis yog tsim los tsim cov xim ntau dhau heev thaum tsim cov khoom ntim tau yooj yim, vim yog lub plhaub ntim txheej tuab, tus zauv npoo npog yuav qhuav sai thiab nyuab, uas yuav hla cov hnyav tawm ntawm kev tawm hauv cov ink txheej, nws thiaj li pib flexible ntim. Cov hnyav residue tsub kom ntxiv. Hnov cov xim muaj xim muaj peev xwm siv tau los tiv thaiv tus lej hauv plag ntawm los yog tuab heev, uas ua kom txo qhov hnyav seem ntawm lub pob ywj pheej.
Yog tias muaj ib qhov chaw loj nyob rau tib lub phaj thiab ib qho mesh ntiav qauv, nws yog ib qho nyuaj rau kev tswj cov kua tshuaj. Vim hais tias thaum sib xyaw xyaw yog qhuav sai heev, cov ntiav mesh yuav thaiv lub phaj, thiab qhov ziab tshauv ntawm qhov sib xyaw xyaw yuav ua rau qis, uas yuav ua rau muaj ntau npaum li cas ntawm cov khoom seem. Yog li no, qhov kev tsim no yuav tsum raug zam kom ntau li ntau tau thaum lub sam thiaj.
Thaum tsim tus qauv ntawm cov khoom ntim tau yooj yim, cov yeeb yaj kiab uas tsis muaj vaj tse yuav tsum raug siv los ua cov txheej txheem ntau li ntau tau, thiab tom qab ntawd ces nrog cov txheej txheem thaiv sab nrauv thiab lub tsho tiv thaiv kom tsis txhob muaj kev sib txeeb ntim.
3. Cov nyhuv ntawm cov tshuab luam ntawv gravure ntawm cov txheej txheem hnyav
Cov kab mob kom qhuav. Cov qauv, qhov cua thiab qhov cua sov ntawm qhov gravure xovxwm qhov cub txiav txim siab kom ziab qhov hluav taws xob thiab ziab tshooj ntawm cov ntawv luam tawm.
Niaj hnub no, qhov kev ziab tshuab ntawm lub gravure xovxwm yog tas li txhim kho. Piv txwv, lub xeem xim txheej ntawm cov kabmob nrig tuaj yeem siv ob lub ncu, thiab cov ntaub qhwv gravure xovxwm ntev qhov ntev ntawm qhov cub. Piv txwv, qee cov tshuab luam ntawv sau qoob lag luam tau ua raws li kev faib tawm hauv qhov cub, uas muab faib ua qis thiab qis dua. Qhov kev tsim no ua tau tawm tag nrho cov roj cua uas muaj cov ntsiab lus hnyav rau hauv qis tshooj, thiab cov roj uas muaj cov ntsiab lus qis rau hauv sab qaum. Cov cua kub thav nrawm ua rau kom tsis muaj teeb meem ntawm cov ntawv luam tawm.
Kev luam tawm ceev. Qhov ceev ntawm kev luam ntawv txiav txim siab lub sijhawm ntev npaum li cas luam tawm. Txhawm rau kom tswj tau qhov hnyav seem ntawm cov khoom siv tau yooj yim, qhov kev luam ntawv yuav tsum tsim nyog kom nce ntxiv thaum uas kom ntseeg tau hais tias cov ntawv luam tawm ntawm cov ntawv luam tawm ntawm cov ntawv luam tawm yog txaus qhuav.
Lub voj nyob rau hauv lub khw luam ntawv. Lub voj nyob rau hauv lub tshuab rhiav kuj muaj ib qho txiaj ntsim zoo rau qhov seem ntawm qhov seem ntawm qhov hnyav. Muaj ob qho laj thawj: Ua ntej, cov pa ya tuaj hauv cov pa yuav nkag mus rau tus cwj pwm, txo cov volatility ntawm qhov hnyav ntawm tus cwj mem. Thib ob, qhov muaj qhov loj ntawm cov dej noo nyob rau hauv cov huab cua tseem yuav thaiv qhov number case. Volatilization ntawm qhov hnyav. Feem ntau, thaum twg cov av noo doubled, qhov ziab ziab ntawm tus cwj mem yog ze li ob npaug. Yog li, nyob rau hauv high humidity conditions, lub luam ntawv ceev yuav tsum tau txo kom ntau li ntau tau, thiab tus number case yuav tsum tau cia tawm ntawm kev sib tsoo nrog huab cua kom paub tseeb tias tus number case txheej yog txaus qhuav. Cov voj nyob rau hauv lub Rhiav kev luam feem ntau tswj tau ntawm 50% txog 65%.
Cov ntawv luam tawm yuav tsum tau muab tso rau hauv qhov chaw muaj cua nkag rau ib hnub lossis ob zaug ua ntej kev sib xyaw.
Cov teeb meem cuam tshuam hnyav residue hauv cov txheej txheem sib xyaw
Tam sim no, ntau tshaj 80% ntawm cov khoom siv uas siv hauv cov khoom noj khoom haus thiab cov khoom siv hluav taws xob thiab cov hnab yas yog cov cawv dej-soluble 2-polyurethane adhesives siv ethyl acetate ua ib qho hnyav. Cov nram qab no tsom rau cov nyhuv ntawm cov khoom sib xyaws qhuav siv cov khoom siv ester-soluble rau cov txheej txheem ntawm cov khoom seem uas tsis yoojyim.
1. Cov nyhuv ntawm cov khoom siv ntawm cov kua dej khov
(1) Cov nyom ntawm toluene rau qhov seem ntawm qhov seem
Yog tias tus cwjpwm hnyav uas muaj cov tshuaj siv toluene, yuav muaj qee qhov toluene residual tom qab luam ntawv, thiab toluene residual yuav ntxiv rau lub volatilization ntawm ethyl acetate nyob rau hauv lub nplaum. Feem ntau, qhov kawg ntawm tus nqi ntawm ethyl acetate kawg yog 1.5 ntawm qhov seem ntawm cov tshuaj toluene. ~ 2.0 zaug los yog li ntawd, uas yog vim li cas peb feem ntau hais txog kev ua haujlwm "tswj cov tshuaj tshuav ntawm toluene hauv kev luam ntawv yog tus yuam sij rau kev tswj tag nrho cov dej seem hauv cov thev ntim." Qhov zoo tshaj plaws thiab txoj hauv kev los tswj cov tshuaj toluene residue yog siv cov kua roj dawb tshiab.
(2) Tus cawv ntawm cov substrate
Txawm hais tias cov phev tshuaj thiab cov nplaum siv nyob rau hauv lub gravure thiab qhuav compounding yog tib yam, cov txheej txheem ntau lawm yog tib yam, tab sis qhov seem residue nyob rau hauv lub yoojyim ntim yuav txawv. Qhov no yog vim hais tias tus nqi ntawm adsorption thiab tso tawm cov kuab tshuaj los ntawm ntau coated zaj duab xis substrates yog txawv. Kev tso tawm tus nqi ntawm cov yeeb yaj kiab uas siv cov co duab ua rau substrate rau ethyl acetate yog: PET> NY> BOPP (cov lus tshaj tawm cov lus tshaj tawm). Feem ntau, qhov ziab tshav kub thaum lub sij hawm ntawm kev sib xyaw yog nyob ze rau ntawm lub pob zeb BOPP, thiab cov kev ua haujlwm tsis zoo ntawm cov lwg me yog khaus ntau dua, thiab qhov tshaj tawm ntawm qhov xuas dej xws li ethyl acetate thiab toluene yog ceev. Yog li, nws yog qhov nyuaj rau BOPP cov yeeb yaj duab kom txo tau qhov hnyav residue.
(3) Cov nyhuv ntawm cov dej ntsiab lus ntawm ethyl acetate
Cov ya raws hauv cov ethyl acetate cuam tshuam cov volatilization ntawm cov ethyl acetate, uas nyeg cuam tshuam qhov hnyav residual amount ntawm daim nyias nyias membrane. Yog li, ethyl acetate nrog purity dua yuav tsum tau siv.
(4) Tus cawv ntawm kev nplaum
Nyob hauv tib lub substrate thiab tib txoj kev, cov adhesives ntawm txawv tuam ntxhab xaiv tau, thiab cov kua residue ntawm tus zaum kawg zaj duab xis kuj yuav txawv. Qhov no yog vim hais tias cov polyurethane nplaum muaj ib pawg neeg reactive hydroxyl nyob hauv kev sib xyaws molecular thiab cov ntaub ntawv muaj kev sib txuas nrog hydrogen nrog ethyl acetate, li no los cuam tshuam cov volatilization ntawm ethyl acetate. Cov kev hloov ntawm lub ntsiab tivthaiv ntawm lub nplaum yuav cuam tshuam rau lub zog ntawm cov nyiaj hydrogen. Qhov muaj zog ntawm cov nyiaj hydrogen, qhov nyuaj nyuaj nws yog tso tawm cov ethyl acetate. Yog li ntawd, lub nplaum ntawm txawv tuam ntxhab yuav ua rau qhov sib txawv ntawm qhov seem. Ua ntej xaiv ib qho khoom siv nplaum, lub ntsiab ntawm cov nplaum yuav tsum raug to taub kom tsis txhob muaj qhov nyuaj nyuaj hauv qhov kev tswj hwm qhov seem.
2. Nyhuv ntawm cov txheej txheem drying compound rau qhov seem residue
(1) Gradient qhov chaw ntawm qhov cub kub thiab cawv ntawm qhov cua nkag
Qhov kub thiab txias qhov cub ntawm qhov cub yog qhov tseem ceeb tshaj plaws uas cuam tshuam txog qhov hnyav seem hauv cov kab mob qhuav. Nws yog tus yuam sij rau kev tswj kom qhuav qhov txias thiab kom muaj qhov cua zoo. Qhov ntsuas kub ntawm qhov cub theem peb theem yog feem ntau 60 ° C, 70 ° C, 80 ° C, uas yog rau kev sib xyaw kom ceev (80 ~ 120 m / min), thiab cov txheej txheem kev sib xyaw nrog cov ethyl acetate li hnyav. Feem ntau, qhov cua zoo ua ke nrog qhov ntsuas kub zoo, qhov seem ntawm cov kua nplaum rau ntawm lub hnab kom yooj yim dua yuav tsum qis dua.
Yuav kom tswj tau qhov seem ntxhuav seem mus rau theem qis dua (piv txwv li tsawg dua 5 mg / m2), qhov cub kub yuav tsum tau nce mus txog 5 txog 10 ° C. Txawm li cas los xij, nws yuav tsum tau sau tseg tias thawj theem ntsuas kub ntawm qhov cub yuav tsum ceev cia kom deb li sai tau kom tswj tau qhov evaporation tus nqi ntawm ethyl acetate thiab toluene hauv thawj theem. Yog hais tias thawj theem ntawm ethyl acetate thiab toluene volatilize dhau plaws, ib txheej tuab ntawm cov roj hmab tawv yuav tsim rau ntawm lub nplaum ntawm cov nplaum, uas yuav ua rau cov nplaum thiab cwj mem hauv qhov txheej hauv txheej ntawm ethyl acetate thiab toluene. Volatilization, ua rau muaj kev nce ntxiv hauv cov kua tshuaj. Qhov kub ntawm qhov thib ob ntawm qhov cub yuav tau nce los ntawm 5 mus rau 10 ° C, uas tuaj yeem ua rau lub vauj ntawm acetate thiab toluene nyob rau hauv lub nplaum thiab cwj mem ntawm sab hauv txheej. Hauv peb theem ntawm qhov cub, ethyl acetate thiab toluene tsis yooj yim rau volatilize vim tawv txheej ntawm cov npoo tau tsim thiab qhov seem uas yog ethyl acetate thiab toluene tsis yooj yim rau volatilize, yog vim li cas qhov cub kub hauv theem kawg yog siab dua. . Qhov kub ntawm qhov thib peb seem ntawm qhov cub tuaj yeem yuav nce los ntawm 5 txog 15 ° C, tab sis cov ntaub ntawv no yog qhov kev sim ntawm kev sib xyaw ceev ntawm 80 ~ 120 m / min. Yog hais tias lub ceev ntawm lub tshuab txo los yog ntau dua, qhov kub yuav tsum raug txo qis los yog kho raws li.
(2) Kev cuam tshuam ntawm kev ceev ceev
Zoo ib yam li cov ntsiab lus hais tias qhov kev luam ntawv cuam tshuam txog qhov cov tshuaj tsis haum, qhov kev ceev ceev yog ib qho tseem ceeb rau qhov seem ntawm qhov hnyav, yog li qhov kev sib xyaw ua kom ceev nrooj yuav tsum tau tsim nyog raws li lub qhov ziab ntawm qhov cub kom qhuav.
(3) Tus cawv ntawm cov nqi ntawm daim ntawv thov
Qhov loj dua tus nqi ntawm cov ntaub ntawv thov, qhov ntau dua qhov hindrance mus rau evaporation ntawm lub puab hnyav vim lub hardening ntawm txheej txheej ntawm lub nplaum thaum dhau los ntawm lub qhov cub, thiab ntau dua qhov seem ntawm qhov hnyav. Yog li, vim li cas cov kev xav tau ntawm cov khoom ntim tau yooj yim, qhov txheej txheem ntawm cov nplaum yuav tsum raug tswj kom ntau li ntau tau.