Thaum tshav kub kub shrink film labelsyog nyias zaj duab xis cov ntawv luam tawm ntawm cov yeeb yaj kiab yas lossis cov raj siv tus cwj mem tshwj xeeb. Thaum lub sij hawm daim ntawv lo, thaum rhuab (nyob ib ncig ntawm 70 ℃), daim ntawv shrinks sai sai shrinks raws sab nrauv contour ntawm lub thawv thiab adheres nruj nreem rau saum npoo ntawm lub thawv. Thaum tshav kub kub shrink zaj duab xis cov ntawv feem ntau suav nrog cov hnab ntim cov hnab ntim cov ntawv thiab cov ntawv ntim qhwv.
Cov yam ntxwv ua haujlwm
Shrinkage lub tes tsho daim ntawv lo yog ib daim ntawv cylindrical ua los ntawm tshav kub shrink zaj duab xis raws li substrate, uas yog luam tawm thiab ces ua. Nws muaj cov yam ntxwv ntawm kev siv yooj yim thiab yog qhov tsim nyog rau cov ntim tshwj xeeb. Shrink lub tes tsho feem ntau xav tau cov cuab yeej tshwj xeeb los npog cov ntawv luam tawm rau hauv lub thawv. Ua ntej, cov ntawv sau npe qhib cov ntawv ntim cylindrical lub tes tsho, uas tej zaum yuav xav tau drilling; Tom ntej no, txiav daim ntawv lo rau hauv qhov ntau thiab tsawg thiab muab tso rau ntawm lub thawv; Tom qab ntawd siv cov nkev, infrared, los yog cua kub raws li kev kho cua sov kom nruj nreem daim ntawv lo rau saum npoo ntawm lub thawv.
Vim lub siab pob tshab ntawm zaj duab xis nws tus kheej, daim ntawv lo muaj xim ci thiab glossy. Txawm li cas los xij, vim qhov xav tau ntawm qhov shrinkage thaum siv, muaj qhov tsis zoo ntawm cov qauv deformation, tshwj xeeb tshaj yog rau cov khoom luam tawm nrog cov cim barcode. Kev tsim qauv nruj thiab kev tswj hwm kev luam ntawv yuav tsum tau ua, txwv tsis pub qhov deformation ntawm tus qauv yuav ua rau qhov zoo ntawm barcode tsis tsim nyog. Shrink wrap labels tuaj yeem sau npe siv cov khoom siv ib txwm siv, uas yuav tsum tau siv cov nplaum nplaum thiab kub siab dua thaum lub sij hawm sau ntawv. Thaum lub sij hawm shrinkage txheej txheem, kub yaj nplaum nplaum yog nyiam vim qhov kev ntxhov siab tsim los ntawm cov nplaum ntawm qhov sib tshooj ntawm zaj duab xis.
Prepress ntau lawm
Vim lub fact tias cov cua sov shrink zaj duab xis yog ib tug thermoplastic zaj duab xis uas yog taw qhia los ntawm stretching thaum lub sij hawm tsim thiab shrinks thaum siv. Yog li ntawd, tsis hais seb txoj kev luam ntawv twg yog siv rau kev luam ntawv, ua ntej tsim cov qauv saum npoo, kab rov tav thiab ntsug shrinkage tus nqi ntawm cov khoom, nrog rau kev tso cai deformation yuam kev nyob rau hauv ntau cov lus qhia ntawm cov duab kos duab thiab cov ntawv tom qab shrinkage, yuav tsum tau txiav txim siab. los xyuas kom meej qhov raug kho dua tshiab ntawm cov qauv, ntawv nyeem, thiab barcode shrunk rau hauv lub thawv.
Kev taw qhia ntawm tus qauv
Txawm hais tias lub tshav kub shrink zaj duab xis yog luam tawm siv gravure printing los yog flexographic printing, nws cov luam ntawv yog tsuas yog nyob rau hauv lub puab txheej txheem luam ntawv, thiab cov kev taw qhia hais txog cov qauv ntawm lub printing phaj yuav tsum zoo. Niaj hnub no, tseem muaj shrink films rau deg printing. Hauv qhov no, cov qauv kev taw qhia ntawm lub phaj luam ntawv yuav tsum thim rov qab.
Lub hierarchy ntawm cov qauv
Vim yog cov kev txwv ntawm flexographic luam ntawv, yog tias cov yeeb yaj kiab shrink yog luam tawm siv flexographic luam ntawv, qib ntawm cov duab yuav tsum tsis txhob maj dhau, thaum siv gravure luam ntawv tuaj yeem xav tau cov duab ntau dua.
Tsim ntawm qhov ntev
Lub transverse shrinkage tus nqi ntawm lub tshav kub shrink zaj duab xis khoom siv rau luam ntawv yog 50% mus rau 52% thiab 60% mus rau 62%, thiab tuaj yeem ncav cuag 90% nyob rau hauv cov xwm txheej tshwj xeeb. Qhov ntev shrinkage tus nqi yuav tsum yog 6% mus rau 8%. Txawm li cas los xij, thaum lub sijhawm luv luv ntawm cov yeeb yaj kiab, vim muaj kev txwv ntawm lub thawv, cov lus qhia kab rov tav thiab ntsug tsis tuaj yeem cog lus tag nrho. Txhawm rau kom ntseeg tau qhov tseeb ntawm cov qauv sib cog lus, ntawv nyeem, thiab barcode, nws yog ib qho tsim nyog yuav tsum xav txog qhov zoo ntawm lub thawv thiab xam qhov tseeb qhov loj me thiab deformation tus nqi raws li qhov tseeb. Rau cov ntawv ntim cua sov uas yuav tsum tau hloov cov ntawv zoo li cov yeeb yaj kiab rau hauv cov duab cylindrical thiab sib khi cov chaw sib tshooj ua ke nrog cov nplaum, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias tsis muaj cov duab lossis cov ntawv yuav tsum tau tsim nyob rau ntawm qhov chaw sib khi kom tsis txhob cuam tshuam lub zog ntawm kev sib khi.
Kev tso kawm barcode
Feem ntau, qhov kev tso kawm ntawm barcode yuav tsum ua raws li cov kev taw qhia luam ntawv, txwv tsis pub nws yuav ua rau muaj kev cuam tshuam ntawm cov kab barcode, uas yuav cuam tshuam rau cov txiaj ntsig scanning thiab ua rau kev nyeem tsis raug. Tsis tas li ntawd, kev xaiv xim ntawm cov khoom lag luam yuav tsum tsom rau cov xim xim kom ntau li ntau tau, thiab tsim cov qauv dawb yog tsim nyog, uas tuaj yeem ua rau tag nrho lossis hollow raws li qhov tseeb. Cov xim ntawm barcodes yuav tsum ua raws li cov lus pom zoo, uas yog, xim ua ke ntawm cov tuav thiab qhov chaw yuav tsum ua raws li cov ntsiab lus ntawm cov xim barcode. Kev xaiv cov ntaub ntawv luam tawm. Kev luam ntawv ntawm cov ntawv kub hnyiab tau raug tshuaj xyuas luv luv, thiab ntxiv rau kev tswj cov txheej txheem luam ntawv zoo, cov khoom siv ua lub luag haujlwm txiav txim siab hauv nws qhov zoo. Yog li ntawd, xaiv cov khoom tsim nyog yog qhov tseem ceeb heev. Txiav txim siab qhov tuab ntawm cov khoom siv zaj duab xis raws li daim ntawv thov daim teb, tus nqi, cov yam ntxwv ntawm cov yeeb yaj kiab, kev ua haujlwm shrinkage, txheej txheem luam ntawv, thiab cov txheej txheem sau npe yuav tsum tau ua ntawm daim ntawv lo rau lub tshav kub. Qhov kev xav tau dav dav rau kev ua cov ntawv ntim zaj duab xis yog qhov tuab ntawm zaj duab xis yuav tsum nyob nruab nrab ntawm 30 microns thiab 70 microns, nrog rau 50 microns, 45 microns, thiab 40 microns feem ntau siv. Qhov tshwj xeeb thickness nyob ntawm qhov kev ua tau zoo ntawm cov khoom siv labeling. Rau cov khoom siv daim ntawv xaiv, nws yog feem ntau yuav tsum tau hais tias qhov shrinkage tus nqi ntawm cov ntaub ntawv zaj duab xis yog nyob rau hauv daim ntawv thov ntau yam, thiab lub transverse (TD) shrinkage tus nqi siab tshaj qhov ntev (MD) shrinkage tus nqi. Tus nqi qis qis ntawm cov khoom siv feem ntau yog 50% mus rau 52% thiab 60% mus rau 62%, thiab tuaj yeem ncav cuag 90% tshwj xeeb. Lub longitudinal shrinkage tus nqi yuav tsum nyob nruab nrab ntawm 6% thiab 8%. Tsis tas li ntawd, vim yog qhov siab ntawm cov yeeb yaj kiab shrinking kom sov, nws yog ib qho tseem ceeb kom tsis txhob muaj qhov kub thiab txias thaum lub sij hawm cia, luam ntawv, thiab kev thauj mus los.
Kev luam ntawv tseem ceeb
Tsis zoo li daim ntawv lo, cov ntawv thermal shrink zaj duab xis siv cov ntaub ntawv luam tawm tsis zoo xws liPVC, PP, PETG, OPS, OPP, thiab ntau txheej txheej co extruded films. Cov khoom ntawm cov ntaub ntawv no txiav txim siab tias lawv cov txheej txheem luam ntawv txawv ntawm cov ntawv sau. Nyob rau hauv cov tsoos offset printing, flexographic printing (flexographic printing), gravure printing, thiab txhob lo lo ntxhuav npo luam ntawv, txoj kev luam ntawv ntawm tshav kub shrink zaj duab xis cov ntawv tseem yog tsuas yog gravure printing. Qhov laj thawj tseem ceeb yog tias muaj ntau lub tshuab luam ntawv hauv tsev gravure, thiab kev sib tw rau cov nqi luam ntawv yog hnyav heev. Tsis tas li ntawd, cov khoom lag luam gravure muaj cov yam ntxwv ntawm cov xim tuab tuab, cov xim ci, thiab cov khaubncaws sab nraud povtseg, thiab cov hom ntawv no feem ntau yog phaj luam ntawv ntev. Lub gravure luam ntawv tuaj yeem tiv taus ntau lab nplooj ntawv, Yog li rau qhov chaw nyob nrog lub peev xwm luam ntawv loj, nws yog qhov tsis txaus ntseeg tus nqi tshaj plaws. Txawm li cas los xij, nrog kev sib tw ntawm kev lag luam thiab kev tsim cov thev naus laus zis xws li flexographic phaj ua, tshuab, thiab number case, qhov kev faib ua feem ntawm flexographic luam ntawv yog nce txhua xyoo. Tab sis los ntawm cov neeg siv khoom xav, qhov tseem ceeb tshaj yog ua tau raws li cov qauv zoo, txo cov nqi, thiab xaiv txoj kev luam ntawv tsim nyog.
Tswj kev nro
Vim tias cov yeeb yaj kiab nyias nyias muaj kev cuam tshuam ntau dua rau kev hloov pauv thaum lub sijhawm luam ntawv, ua rau muaj kev sau npe tsis raug, nws yog ib qho tseem ceeb uas yuav tsum tau ua tib zoo saib xyuas kev nruj nruj thaum lub sij hawm luam ntawv kom muaj kev ruaj ntseg thiab sib npaug ntawm qhov nro. Qhov loj ntawm kev hloov kho nro yuav tsum tau txiav txim siab raws li hom thiab tensile lub zog ntawm zaj duab xis. Piv txwv li, yog tias lub zog tensile ntawm zaj duab xis tsis muaj zog thiab ua rau tensile deformation, qhov nro yuav tsum me me; Rau cov yeeb yaj kiab uas muaj zog tensile zog, qhov nro tuaj yeem ua tau zoo sib xws. Nyob rau hauv cov ntaub ntawv ntawm ib yam ntawm cov zaj duab xis, qhov dav thiab thickness ntawm cov zaj duab xis kuj tseem ceeb yam tseem ceeb txiav txim siab qhov loj ntawm qhov nro. Cov yeeb yaj kiab dav yuav tsum muaj qhov nruj dua li cov yeeb yaj kiab nqaim, thaum cov yeeb yaj kiab tuab muaj qhov nro ntau dua li cov yeeb yaj kiab nyias.
Gravure tshav kub shrink zaj duab xis tsuas yog siv chav tsev hom gravure tshuab luam ntawv, uas tam sim no nruab nrog nro tsis siv neeg tswj tshuab thiab tsis siv neeg sau npe xim tswj tshuab. Raws li kev ntsuas qhov ua yuam kev ntawm cov cim npe xim, qhov nro hauv cheeb tsam uncoiling, cheeb tsam luam ntawv, thiab winding cheeb tsam yuav raug hloov kho kom ruaj khov hauv cov txheej txheem luam ntawv thiab qhov tseeb ntawm kev luam ntawv kawg. Piv nrog rau stacked thiab unit hom flexographic tshuab luam ntawv, CI hom flexographic tshuab luam ntawv yog tsim nyog rau siv flexographic tshav kub shrink films. Qhov no yog vim hais tias thaum lub sij hawm luam ntawv, txhua pab pawg neeg xim sib koom ib tug ntau imprinting nruas, thiab substrate cov ntaub ntawv thiab imprinting nruas yog nruj nreem kaw, nrog me me kev hloov nyob rau hauv nro, ua rau me me tensile deformation ntawm cov ntaub ntawv thiab siab sau npe raug.
Ink xaiv
Muaj plaub yam tseem ceeb ntawm inks siv rau shrink film printing: hnyav raws li inks, dej-raws li inks, cationic UV inks, thiab dawb radical UV inks. Nyob rau hauv cov nqe lus ntawm daim ntawv thov, cov kuab tshuaj raws li inks dominate nyob rau hauv lub teb ntawm shrink zaj duab xis daim ntawv lo luam ntawv, ua raws li dej-raws li inks thiab dawb radical UV inks. Txawm li cas los xij, cationic UV inks tsis tau siv dav hauv cov yeeb yaj kiab shrink vim lawv cov nqi siab thiab nyuaj rau kev luam ntawv. Cov kuab tshuaj raws li tus number case yog tsuas yog siv rau cov cua sov shrink films hauv gravure thiab flexographic luam ntawv. Cov yeeb yaj kiab sib txawv yuav tsum siv tus cwj mem tshwj xeeb thiab tsis tuaj yeem sib xyaw. Ink tuam txhab uas muag feem ntau muab peb qhov hnyav piv rau tus number case sib txawv ntawm cov ntaub ntawv sib txawv: ceev kom qhuav, nruab nrab kom qhuav, thiab qeeb ziab. Printing factories tuaj yeem xaiv qhov tsim nyog hnyav piv raws li cov khoom siv tiag tiag xws li kev cob qhia kub thiab luam ntawv ceev. Tsis tas li ntawd, tus number case dej thiab UV number case kuj tseem siv tau. Txawm li cas los xij, tsis hais tus cwj mem siv li cas, nws yog qhov yuav tsum tau ua tib zoo xav txog tias cov ntsuas kev ua tau zoo ntawm tus number case yuav tsum ua tau raws li qhov yuav tsum tau ua. Piv txwv li, tus nqi shrinkage ntawm tus number case yuav tsum phim cov yam ntxwv ntawm shrinkage ntawm tshav kub shrink zaj duab xis, txwv tsis pub nws yuav ua rau tus number case txheej cais los yog deink.
Tswj qhov kub kom qhuav
Nws yog ib qho tseem ceeb heev uas yuav tsum tswj qhov kub kom qhuav kom zoo thaum luam ntawv cov cua sov shrink films. Yog hais tias qhov ziab kub siab dhau lawm, cov khoom yuav muaj thermal shrinkage; Yog tias qhov kub thiab txias qis dhau, tus number case yuav tsis qhuav kom txaus, ua rau qhov kawg adhesion thiab av nyob rau tom qab. Cov tshuab ziab khaub ncaws xim yog ntsia rau ntawm ob qho tib si gravure thiab flexographic tshuab luam ntawv kom paub meej kom tiav ziab ntawm txhua xim ntawm tus number case. Nyob rau tib lub sijhawm, txhawm rau tiv thaiv kom tsis txhob deformation ntawm cov khoom thaum lub sij hawm ziab, nws yuav tsum tau teeb tsa cov cua txias ntawm cov xim decks los tswj cov kev cuam tshuam ntawm cov hluav taws kub. Niaj hnub no, cov nruas khov yog siv rau hauv cov tshuab luam ntawv, uas tuaj yeem txo qhov kub ntawm cov ntaub ntawv thaum lub sij hawm luam ntawv. Vim yog cov luam ntawv tsim nyog ntawm shrink films, xws li muaj zog tshuaj stability, tsis tshua muaj zog nto, du nto yam tsis nqus, thiab tsis zoo affinity nrog luam ntawv number case. Yog li ntawd, tsis hais txog ntawm txoj kev luam ntawv siv, zaj duab xis yuav tsum tau txais kev kho deg corona tawm los txhim kho nws lub zog saum npoo thiab roughness, thiab txhim kho cov adhesion ceev ntawm number case ntawm cov khoom nto.
Post lub sij hawm: Jan-25-2024
