Ob Lub Rooj Sib Tham Kom Paub Txog Cov Khoom Siv PET Zaj Duab Xis Nrog Luam Ntawv Tsis Ua Haujlwm, Sim Ua!

PET zaj duab xis cov ntaub ntawv yog cov polymer uas tsis tshua muaj zog nto, tsis muaj peev xwm ntub dej rau cov cwj pwm zoo tib yam thiab tsis zoo tom qab luam ntawv, yog li kev kho saum npoo yog tsim nyog txawm tias siv txoj kev luam ntawv twg. Feem ntau cov kev ntsuas siv yog kev kho mob corona los txhim kho lub zog saum npoo ntawm cov khoom, lossis hloov lub cev ntawm cov khoom siv los ua cov txheej txheem txheej txheej. Txawm li cas los xij, hauv cov txheej txheem tsim khoom tiag tiag, luam ntawv PET cov ntaub ntawv zaj duab xis nrog cov teeb meem number case tuaj yeem koom nrog ntau yam thiab ntau yam. Nov yog ob qho piv txwv los piav qhia txog kev sib raug zoo ntawm cov ntaub ntawv PET zaj duab xis thiab cov khoom siv luam ntawv, txheej txheem luam ntawv thiab cov neeg ua haujlwm.

Case one: xaiv tus cwj mem tshwj xeeb kom paub meej tias tus number case ruaj khov

Lub tuam txhab luam ntawv daim ntawv lo siv lub npe ntawm cov xim nyiaj xim PET cov khoom siv los luam cov ntawv roj teeb, thiab cov neeg siv kawg pom tias cov laminate zaj duab xis ntawm daim ntawv lo saum npoo tev tawm thaum siv thiab lo rau tus number case, ua rau daim ntawv lo ntawm qhov chaw tsis muaj ib nrab. ink (raws li qhia hauv daim duab 1).

Los ntawm daim ntawv lo rau ntawm qhov chaw mus saib thiab luam ntawv tuam txhab thiab cov neeg ua haujlwm paub txog qhov xwm txheej tuaj yeem pom: daim ntawv lo rau ob xim luam ntawv, thawj zaug luam tawm xim dawb priming, thiab tom qab ntawd luam cov ntawv cyan (xws li ntawv Yang thiab Yin ntawv). Tom qab tev cov BOPP zaj duab xis, cov ntaub ntawv saum npoo ntawm cov ntawv cyan Yang tsis poob, qhov tsis zoo ntawm cov ntawv dawb ib feem ntawm cov seem ntawm cov khoom siv, thaum tus number case ntsuab thiab tus number case dawb overprinted tag nrho. Qhov tshwm sim no qhia tau hais tias: (1) ib feem ntawm cov ntawv zoo ntawm tus number case ntsuab yog qhuav thiab kho, tsis muaj teeb meem ntawm tus number case poob; (2) ib feem ntawm tus cwj mem dawb ntawm cov ntawv tsis zoo yog ib feem kho ntawm qhov chaw ntawm cov khoom, thaum feem ntau nws tsis kho thiab daig ntawm cov zaj duab xis sib xyaw; (3) ib feem ntawm tus number case ntsuab thiab dawb number case overprint yog tsis kho txhua thiab daig ntawm cov zaj duab xis sib xyaw tag nrho tawm.

Los ntawm kev txheeb xyuas cov yam ntxwv ntawm cov khoom siv PET zaj duab xis: tus number case poob yog tshwm sim los ntawm tus number case dawb ntawm cov khoom siv zaj duab xis tsis qhuav tag, vim tias cov xim dawb kom ua tiav lub hom phiaj ntawm priming, yuav tsum muaj qee qhov tuab, thiab tus number case dawb nyob rau hauv phthalo dawb hmoov, tsawg resin, muaj zog xav txog ntawm UV teeb, tsis zoo nqus, yog li ntawd tus cwj mem dawb dawb yooj yim mus tsis ncaj ncees lawm. Tsis tas li ntawd, daim ntawv lo phaj qauv rau txheej number case "los ntshav" tuag-txiav, yog li tus number case txheej firmness yuav tsum siab dua.

Tus yuam sij rau kev daws qhov teeb meem no yog cov teeb meem ntawm tus number case dawb. Cov tuam txhab luam ntawv siv lub tuam txhab tus cwj mem UV161 (tus cwj mem rau lub hom phiaj dav dav, tuaj yeem luam ob daim ntawv thiab zaj duab xis), cov ntaub ntawv sib txuas hauv cov khoom siv rau cov khoom siv hauv tsev, cohesion me me, tsis tshua muaj siab ntev rau cov khoom siv txheej txheej. Los ntawm kev sib piv, VP tus cwj mem yog tus cwj mem tshwj xeeb rau kev luam yeeb yaj kiab, thiab feem ntau ntawm cov resins hauv nws cov khoom sib txuas yog cov khoom tshwj xeeb txawv teb chaws, uas hloov mus rau txhua yam txheej txheej.

Kev sib koom ua ke ntawm VP tus cwj mem yog qhov loj heev, txawm tias txheej txheej number case muaj qee qhov tuab, yog tias tsis kho tag nrho, yuav muaj kev sib raug zoo nrog cov khoom txheej, thiab yuav tsis muaj tus number case poob. Daim duab 2 qhia txog qhov xwm txheej ntsuas ntawm UV 161 tus cwj mem thiab VP tus cwj mem nrog cov tuab tuab ntawm number case txheej.

Qhov thib ob: txo cov thickness ntawm tus number case txheej kom tsis txhob tus number case tawm

Lub tuam txhab luam ntawv daim ntawv lo siv lub npe matte nyiaj PET zaj duab xis los luam cov ntawv hluav taws xob. Yog tsis hloov tej yam kev mob, cov txheej txheem tuag-txiav tau qhia tias ib pawg ntawm cov khoom tau pom tus lej poob ntawm qhov tuag-txiav ntug. Daim ntawv lo layout yog cov qauv ntshav (saib daim duab 3). Lub tuam txhab luam ntawv muaj kev tsis ntseeg txog qhov zoo ntawm cov khoom siv no thiab vam tias yuav daws tau qhov teeb meem sai li sai tau.

Cov khoom siv substrate xaiv yog PET zaj duab xis cov ntaub ntawv nrog qib siab txheej, kom deb li deb ntawm cov khoom nws tus kheej, qhov tshwm sim no yuav tsum tsis txhob tshwm sim. Peb thawj zaug txheeb xyuas cov qauv ntawm daim ntawv lo: daim ntawv lo rau ob-xim luam ntawv, ntawm cov xim grey luam ntawv ob zaug, lub sijhawm luam ntawv xim dub, luam xim sib lawv liag rau grey grey dub, tib tus cwj mem siv yog UV161 number case, qhov chaw. -xim grey number case thiab dub thawj tus number case yog muab los ntawm tus neeg muag khoom number case.

Tom qab ua tib zoo tshuaj xyuas cov qauv pom tias: ① kuaj nrog 3M-810 daim kab xev, tus cwj mem dub tsis tshwm sim deinking tshwm sim; ② los ntawm kev ntsuam xyuas, tus number case grey pom pom tseeb tawg ntawm thaj chaw loj ntawm tus number case, daim ntawv lo rub tawm ntawm tus number case ntau pom tseeb; ③ grey number case tuag-txiav los ntshav qhov chaw tau jagged tawm ntawm tus number case tshwm sim, saib daim duab 4. los ntawm cov kev ntsuam xyuas saum toj no tuaj yeem txiav txim siab: ① tus number case dub los ntawm cov txheej txheem UV kom qhuav thiab kho cov cuab yeej, tus number case yog kho kom zoo, vim tias tus nqi ntawm cov xim dub. tus number case xav tau rau cov ntawv luam ntawv yog me me, nyias txheej number case; ② grey number case tom qab peb txheej ntawm UV kho cov cuab yeej, vim yog txheej number case tuab, UV kho lub zog, number case curing hla lub taub hau, kom cov number case txheej brittle phenomenon (tseem hu ua aging phenomenon), ntug ntawm daim ntawv lo tuag- txiav cracking, qhov tshwm sim ntawm number case poob.

Txhawm rau kom paub meej tias qhov kev xav tau saum toj no, kev sim ua qhov kev sim ua tiav, siv cov khoom siv hauv substrate tseem tsis hloov pauv, luam tawm ntawm cov xovxwm teb, riam ncig hauv kab tuag-txiav. Ua ntej, kev luam ntawv ntawm cov xim tuab tuab ntawm cov xim grey, siv txoj kev siv hluav taws xob siab, cov txiaj ntsig ntawm tib yam teeb meem raws li lub tuam txhab luam ntawv, daim ntawv lo tuag-txiav ntug tawg tshwm sim. Tom qab ntawd, kev siv cov xim grey xim txheej txheej, txoj hauv kev tsim nyog los txo cov txheej txheem luam ntawv lub zog, lub npoo ntawm daim ntawv tom qab txiav tsis tau tshwm sim tawg, nrog rau daim kab xev tshawb pom kuj tsis tshwm sim tus lej poob. Nws tuaj yeem pom tias cov xim pleev xim nyias nyias, nrog cov khoom siv sib xyaw ua ke, thiab cov xim tuab tuab kho, yuav yog roob hauv lawv tus kheej shrinkage, cohesion hloov, tawg, ua rau cov number case tawm.

Nws yuav tsum tau muab sau tseg tias luam ntawv PET zaj duab xis cov ntaub ntawv ntawm UV letterpress tshuab luam ntawv feem ntau number case tsis ua hauj lwm, qhov no yog vim lub thickness ntawm tus number case txheej tsis tuaj yeem lav, kev hloov ntawm cov cuab yeej ceev, kev hloov siab, kev hloov pauv ntawm tus number case cia system yuav cuam tshuam. txheej number case, yog li tus neeg teb xov tooj yuav tsum tau soj ntsuam ntau zaus, xyuas qhov zoo ntawm daim ntawv lo number case.