Yam ntxwv thiab daim ntawv thov shrink label luam ntawv number case
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 ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
Yog xav paub ntxiv, thov mus saib
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Tam sim no, muaj plaub hom thauv tshuaj uas siv tau los ua cua sov ntim khoom rau luam ntawv: cationic UV inks, radical UV inks, hnyav hauv phom, thiab aqueous inks.
1. catedic UV number case
Cationic UV inks yog siv tsawg dua nyob hauv tshav kub ntawm cov cua kub tho luam tawm, vim lawv tus nqi siab dhau, thiab nws yog qhov yuav tsum tau siv ib qho kev ntaus los ua kom cov kab mob polymerization los ntawm kev siv lub tswv yim ua ntej kom tsim muaj cov kua tshuaj acidic nyob rau hauv irradiation ntawm ib lub teeb UV. Tus neeg sawv cev cationic induces lub saw cov tshuaj tiv thaiv ntawm epoxy pawg kom txog rau thaum cov pa oxygen tawg los yog lub khob iav polymer tsim, thiab cov saw cov tshuaj tiv thaiv. Lub teeb ci ntsa iab uas tawm hauv UV teeb tawm yog tus yuam sij rau kev tswj cov tshuaj tiv thaiv thiab cov tshuaj tiv thaiv tag nrho. Yuav ua kom tiav cov cationic polycondensation cov tshuaj tiv thaiv, nws yog ib qho tsim nyog kom nkag siab txog cov khoom ntawm cov yeeb yaj kiab, kom tsis txhob tawg ntawm tus cwj mem, thiab kom paub meej kev kho ntawm tus cwj mem.
Cationic number case zoo
Cov hom tshuaj tiv thaiv yog lub nplhaib-qhib polymerization ntawm ib pawg epoxy, uas ua rau kom muaj kev tivthaiv cov ntsiab lus ntawm cov cwj mem thiab yuav luag hloov mus rau hauv ib lub cuav pliav.
Cathodic number case luv
(1) Lub sijhawm ntev ntev. Txij li cov tshuaj tiv thaiv kabmob (copycycylation) yog qeeb dua tus radical polycondensation, nws yuav siv sij hawm ntev rau tus cwj pwm xoom mus rau kev sib tw thiab sib zog ua rau lub substrate los txo qhov siab ntawm lub substrate, thiab tus cwj pwm film shrinkage tus nqi ntawm cov cationic kho cov khoom feem ntau tsawg dua 5%.
(2) Vim tias cov tshuaj tiv thaiv qeeb qeeb dua li cov kabmob radical polymerization, feem ntau yuav tsum tau kho kom sov. Kev kub kub thev ua ke uas tsis tshua muaj cwj mem zas duab qis ua rau ua rau tus npoo ntawm cov cwj pwm xaj qis yuav tsis ncaj thiab tsis sib luag. Feem ntau, UV qhov pom kev ntawm 80 W los yog ntau dua tau xaiv los xyuas kom sai thiab ua kom tiav txoj kab cationic. Hauv qab no kub, lub durability thiab adhesion ntawm tus number case zaj duab xis yog significantly txo, thiab tus ntxhiab yog loj.
(3) Cov tshuaj tiv thaiv kabmob (cationic polycondensation reaction) tau txiav tawm los ntawm kev cuam tshuam ntawm cov pa tshuaj atmospheric. Huab cua txias huab cua yuav ua rau muaj kev hloov pauv nyob rau hauv tus lej cim. Yog li, qhov kub thiab av noo tswj lub cev yog ib qho tsim nyog siv rau cationic UV luam ntawv.
(4) Kev xaiv ntawm cov cheebtsam number case yog qhov nyuaj. Ua ntej, tus nqi ntawm cov khoom sib txuas ntawm tus cationic number case nws tus kheej siab tshaj qhov ntawm cov dawb radical. Secondly, txij thaum cov khoom alkaline retards los yog txawm inhibits cov kev kawm ntawm cov tshuaj tiv thaiv, cov ntsiab lus ntawm tej yam hauv cov cwj mem tsis tau excessively siab. Acidic tshuaj yuav tsum tsis txhob siv nyob rau hauv tshaj, txwv tsis pub lub viscosity ntawm tus number case yuav nce mus ua ib tug gel. Rau qhov kawg no, cwjmem engineers yuav tsum nruj nruj tswj cov hom pigment hauv tus cwj pwm number case, kho cov pigment kom nws cov pH nruab nrab. Yog li, ntau yam pigments yuav tsis siv vim hais tias lawv ua tsis tau raws li UV number case fluidity thiab viscosity raws.
(5) Muaj cov txheej txheem siab rau cov dispersants. Cationic inks muaj cov kev cai nruj heev ntawm hom dispersant, uas txwv cov npuas ntxiv rau hauv tus cwj pwm, uas ua rau cov xim tsis zoo ntawm cov ntawv luam tawm txheej ploj, thiab xim ntawm daim duab tsis ci.
(6) Lub cationic initiator muaj hnyav hlau ntsiab, thiab kuj ua rau me me ntawm benzene tshuaj, uas pollutes lub chaw thiab ua rau cov neeg ua haujlwm raug mob.
2. Dawb radical UV number case
Dawb radical UV number case ntaus ntawv kuj siv UV teeb rau taws tus yees duab los mus ua kom muaj kev sib haum xeeb ntawm cov tshuaj acrylate kom txog thaum cov dawb radical reacts nrog rau cov xim, cov pa, cov khoom siv los yog lwm cov dawb radicals, los yog vitrifies los txiav cov kev txhaum fab.
Raws li ib txwm muaj tshwm sim, yuav muaj ib qho me me ntawm ob sab tom qab tus cwj mem tau kho los ntawm UV teeb, tab sis muaj qee qhov kev kho mob tom qab. Yog li, thaum twg tus number case yog txias thiab nrog rau lub substrate, adhesion, khawb, thiab cov zoo li yuav tshwm sim. Lub teeb ci ntsa iab uas tawm hauv UV teeb tuaj yeem ua rau kom ceev ceev. Cov tshuaj tiv thaiv kab mob no tseem ceeb heev dua li cov tshuaj tiv thaiv kab mob, tab sis kuj muaj lwm txoj hau kev los nrhiav cov kev ua kom zoo.
Dawb radical ink zoo
(1) Cov tshuaj tiv thaiv ceev ceev yog ceev. Dawb radical inks yog kho tsis tau kub heev. Nyob rau hauv qis dua lub zog qhov chaw, lawv tuaj yeem kho tau sai sai, uas yog txo cov cua kub ntawm lub substrate thiab tsis tuaj yeem txav ntawm cov thev naus laus zis thaum luam ntawv. Thiab nws cov cai rau cov cwj mem tsis yog hnyav li cov ntaub ntawv hauv cationic. Yog li, ntau hom kev xaiv cov pigment txaus los xyuas kom meej tias rheology zoo ntawm tus number case ntawm YAG anilox yob. Tsis tas li ntawd, siab pigment txhaws cov feem ntawm cov cwj mem kua qaub, txo qis thiab ntxhiab.
(2) Luam tawm ntau. Txij li cov dawb radical number case tsis muaj kev txwv ntau ntawm cov kev xaiv muaj pes tsawg leeg, nws tuaj yeem luam tau ib lub substrate uas muaj alkali alkalinity thiab sau nws nrog alkali-soluble, dej-soluble flexographic printing number.
(3) Lub ziab ziab sai sai. Lub siab adhesion tso cai rau tus lej dawb radial rau instantly koom rau lub substrate thiab kho sai sai raws li lub illumination ntawm lub zog tsawg. Nyob rau hauv cov txheej txheem no, cov khoom siv luam ntawv tsis rhuab, thaum cov cationic number case tsis tas yuav tsum luam tawm ntawm kev kub ceev vim tias muaj kev ruaj siab zog. Qhov no precisely solves qhov teeb meem uas UV flexographic printing productivity yog qis dua gravure printing. Nrog ib txoj kev tsim curing thiab qhov chaw siab, cov lej dawb radial yuav tawg tawm ntawm qhov kev sib tw no.
(4) Lub tshiab dawb radical UV tshuab ua tau yog tsis muaj hnyav hlau ntsiab thiab cov khoom tsis muaj benzene, tab sis cov luam ntawv ceev me ntsis.
Dawb radical number defects
(1) Cov lej dawb radical reacts ceev nrooj thiab sai kho tau tag nrho cov khoom ua ke, uas nce siab rau ntawm substrate. Ntau lub siab thiab ib qho me me ntawm thermal lub zog ntawm UV teeb tuaj yeem ua rau lub cev deformation ntawm zaj duab xis thaum luam tawm lub tshav kub cua ntsws. Lub shrinkage tseem ua rau cov dawb radical UV number case kom yoog raws li lwm cov UV hauv plhaus nkees, thiab affinity thiab adhesion yog deteriorated.
(2) Dawb radical inks yog yooj yim oxidized. Qhov no tuaj yeem ua tiav nrog cov chaw siab zog, cov khoom ua haujlwm siab, lossis cov tswv yim ua pa ua pa xws li diamines thiab triamines. Nws yuav tsum tau muab sau tseg tias qhov no yog qhov kev sim ua tau raws li qhov xwm txheej ntawm cov huab cua raug nyob ruaj khov thiab tsis muaj ntau lub txiaj ntsig. Yog tias nws raug siv ntau dua, ntxiv cov lus sib cav ntxiv.
Tam sim no qee lub tuam txhab, xws li XSYS tus Flexocure XS UV radical polymerization type flexo number case, tau raug kuaj kom ncav 70% shrinkage, thiab cov khoom kuj muaj zoo adhesion, haum rau ntau hom khoom, xws li PVC, OPS, OPP, PETG , lwm yam zoo li
Txawm hais tias muaj qhov sib nrauj ntawm 70%, cov tshiab technologies ntawm cov kabmob dawb-polymerized flexographic luam ntawv muaj peev xwm muaj cov khoom tiv thaiv zoo uas tsis muaj kev xav tau rau cov hnyuv ntxwm thiab cov roj ntsha. Cov khoom no muaj qhov zoo ntawm cov xim muaj zog, kev kho ceev ceev, cov ntawv luam tawm zoo thiab cov ntawv luam tawm. Nws tuaj yeem paub ob qho tib si luam tawm thiab luam ntawv, thiab nws txoj kev ua kom zoo zoo thiab tsis muaj kev vam meej yog qhov muaj txiaj ntsim zoo ntawm kev muaj peev xwm.
3. Xuas kua mem sau
Cov kaus poom hnyav hauv feem ntau yog siv hauv cov ntawv nplaum loj thiab muaj cov pigments, cov khoom tawv nqaij, cov kuab tshuaj tsis haum, cov ntsaws, thiab cov khoom ntxiv. Feem ntau ntawm cov xim Chiv hauv cov pob zeb hauv cev yog cov pigments organic. Organic pigments muaj cov xim hlau xws li cov hlau lead, chromium, mercury, thiab tooj liab, thiab muaj tej yam tshuaj toxicity. Cov phom-based phais yog qhov loj tshaj plaws ntawm cov pa phem hauv kev lag luam luam. Nyob rau xyoo 2004, lub ntiaj teb txhua xyoo yog muaj li ntawm 3,5 lab tons, thiab cov hnyav hauv qhov siv xam muaj li 30% txog 40% ntawm qhov nruab nrab. Txhua xyoo cov organic solvents coj los hauv inks thoob ntiaj teb yog li siab li 1 lab. Ntau tshaj tons. Tsis tas li ntawd, tus cwj mem qaub tseem tseem muaj hnyav hlau ntsiab uas tsim kev puas tsuaj rau tib neeg lub cev. Cov khob muaj 40% rau 50% ntawm cov tshuaj solvent, uas tuaj yeem ua kom tawv nqaij ntawm tib neeg lub cev los ntawm kev tiv tauj kom ntev. Cov theem ntawm cov organic solvents hauv cov huab cua ua rau lub cev tsis zoo rau kev ua pa. Tsis tas li ntawd, cov kua xoos siv rau hauv cov cwj pwm kuj siv cov roj cua los ua pa chorus thiab pa luam yeeb, uas ua rau huab cua tsis zoo thiab muaj kev cuam tshuam rau kev loj hlob ntawm ntau yam nroj tsuag thiab raug rhuav tshem kev lag luam. Vim li no, cov pa hnyav hnyav hnyav hnyav tuaj yeem raug tshem tawm. Xwb, nws yog kua cwj mem kua roj kua hluav taws xob, ib qho uas tsis yog benzene hnyav, thiab tus cwj pwm aqueous.
Txij li thaum aqueous gravure inks tseem tsis tau muaj peev xwm ntawm kev hloov cov toluene inks, tus number case kev lag luam tau ua striving los tsim cawv daws-teeb meem hauv cheeb tsam uas muaj kev thaj yeeb nyab xeeb. Cov cwj pwm uas muaj cawv cwj pwm tsis muaj peev xwm daws tau qhov teeb meem ntawm kev puas tsuaj los ntawm tus cwj pwm toluene ntawm kev noj qab haus huv thiab cov tshuaj tsis haum uas cuam tshuam rau qhov khoom noj khoom haus zoo tshaj plaws. Hauv Tebchaws Europe thiab hauv Tebchaws Meskas, qhov kev txhim kho no tau dhau mus ua qauv. Hauv Asia, xws li Singapore, South Kauslim thiab lwm lub teb chaws, toluene inks raug phased tawm thiab yuav hloov los ntawm kev haus cawv-soluble gravure inks. Cov cawv daws dej cawv muaj feem xyuam siv rau hauv kev lag luam hauv domestic gravure. Nws yuav tsum tau tias yav tom ntej, cov cawv dej caw hauv plawv yuav tau ua ib qho ntawm feem ntawm lub lag luam shrink-label ink hauv Suav teb.
4. Xim npau npau dej
Cov kaus poom dej muaj feem xyuam siv luam ntawv. Qhov sib txawv ntawm cov dej hauv qab thiab cov kob tshuaj hauv cov kwj deg yog cov dej uas siv hauv cov dej hauv cov dej hauv dej yog tsis yog cov organic solvent, uas ua rau cov VOC emissions txo, tsis pub muaj pa phem, tsis raug rau tib neeg kev noj qab haus huv, tsis yooj yim mus hlawv , nyob ruaj hauv ink, thiab nws muaj xim zoo nkauj. Cov khoom lag luam, cov khoom lag luam yooj yooj yim, cov nqi qis, kev nplua zoo tom qab luam ntawv, dej tsis haum thiab ceev kom qhuav, yog li nws tsim nyog rau cov ntawv ntim luam tawm xws li khoom noj khoom haus, dej haus, tshuaj, thiab lwm yam. lub ntiaj teb, thiab tseem yog txhua yam luam tawm hauv ntawv tam sim no. Tsuas pub leej twg pom los ntawm American Food and Drug Association. Tam sim no, 40 feem pua ntawm cov khoom siv yeeb yaj kiab hauv Tebchaws Amelikas siv dej hauv phom, thiab lwm lub tebchaws uas muaj kev lag luam (xws li Nyiv, Yelemees, Fabkis, thiab lwm yam) siv ntau dua dej ntau hauv cov ntawv luam yeeb. Raws li cov ntaub ntawv tseem ceeb, nyob hauv Teb Chaws Asmeskas, cov dej uas muaj kua dej uas muaj raws li VOC emission cai yuav tsum ncav cuag tus lej number case hauv kev siv, qhov feem pua ntawm cov khoom nthe qis dua 25%, thiab qoj tshaj 75%; tus number case nrog tsawg noo noo tsis vau nyob rau hauv kev siv. Cov khoom xyaw yog nyob hauv ob qho qauv ntawm 60% lossis ntau dua.
Tam sim no, dej-raws li hauv cov pob zeb ua kuj ua tau zoo. PEB-hom yas zaj duab xis gravure aqueous number case uas tsim los ntawm Beijing Yingkefan Tshuaj Cov Khoom Co., Ltd. siv dej ua lub ntsiab hnyav, thiab siv ntau hom molecular polymers ua cov yeeb yaj kiab-ua cov khoom, nrog rau cov qib high-level organic pigments, inorganic pigments thiab ntau yam khoom siv ntxiv. Nws ua tau raws li kev tiv thaiv ib puag ncig thiab muaj kev ua haujlwm zoo thiab ua haujlwm zoo rau BOPP, PE, PET thiab lwm cov yas films nrog nro nrawm ntawm (3.6 ~ 4.2) × 10-2N / m. Tom qab luam tawm ntawm BOPP zaj duab xis ntawm tus ceev ntawm 70 m / min, cov xim luam ntawv thiab ntim Hoobkas pom tias cov nyhuv luam tawm thiab kev ua tau zoo mus txog theem ntawm cov khoom sib thooj uas muaj ntxhiab roj carbon dioxide ua lub ntsiab hnyav.