Flexographic luam ntawv phaj- thaiv cov teeb meem piav qhia txhua lub sijhawm - los thiab txuag qhov no!

Flexographic luam ntawv phaj- thaiv cov teeb meem piav qhia txhua lub sijhawm- tuaj thiab txuag qhov no!

Phaj thaiv yog ib qho teeb meem tshwm sim hauv flexographic luam ntawv. Phaj thaiv thaiv yog hais txog qhov tsis muaj peev xwm ntawm tus number case kom tag nrho xa mus rau lub substrate thaum lub sij hawm flexographic ntau lawm, uas ua rau muaj ntau ntxiv ntawm cov number case nyob rau sab saum toj thiab lub xub pwg nyom ntawm cov dots. Thaum qhov no tau mus txog, cov ntawv me me tuaj yeem ua rau loj vim kev hloov pauv ntau dhau, lossis ob peb lub dots tuaj yeem sib txuas tsis tu ncua, ua rau lub phaj luam ntawv ua qias neeg.

Txoj kev daws teeb meem ncaj qha rau qhov teeb meem no yog kaw lub tshuab thiab so lub phaj. Thaum lub tshuab nres thiab lub phaj yog wiped, tsis zoo number case hloov yog pom. Nyob rau tib lub phaj, tus number case ntawm lub substrate yog kom huv si, tawm hauv lub phaj huv si, thaum lub network cable yog hnyav heev. Thaum tus number case ntau heev, so nrog ib daim ntaub feem ntau tsis tuaj yeem ntxuav nws kom huv si; ib qho txhuam mos dipped hauv hnyav yog xav tau rau kev tu kom huv.

Muaj ob hom kev thaiv: ib qho yog thaiv nrog cov dots hauv qab 30%, tshwj xeeb tshaj yog qis dua 5%, feem ntau hu ua siab -gloss cheeb tsam thaiv; lwm qhov yog 45% ~ 55% dot thaiv. Txij li thaum lub dot expansion nyob rau hauv lub midtone ntawm flexographic luam ntawv feem ntau yog hais txog 20%, 50% tseem ceeb point rau offset printing yog feem ntau nyob ib ncig ntawm 70% rau flexographic printing. Yog li, 45%-55% ntawm thaj chaw dot ntawm lub phaj luam ntawv yog qhov tseeb uas cov npoo ntawm ob lub voj voog nyob ze ua ke. Yog tias tsis ceev faj, tus cwj mem tuaj yeem thaiv qhov kev nyuaj siab ntawm ob lub dots ntawm lub phaj. Txawv teb chaws flexographic kev lag luam cov phooj ywg hu qhov tshwm sim 'ink fill-in', tseem hu ua bridging, lub ntsiab lus dot bridging.

01

Ua rau flexographic clogging nyob rau hauv daim ntawv luam ntawv

Zuag qhia tag nrho, qhov ua rau ntawm flexographic phaj clogging tuaj yeem ua tiav raws li hauv qab no:

Kev sib txuam tsis zoo ntawm tus lej ntawm cov kab ntawv luam ntawv thiab cov kab ntawm cov menyuam anilox

Qhov sib txawv tseem ceeb ntawm kev luam ntawv flexographic thiab lwm txoj hauv kev luam ntawv yog anilox cov menyuam, uas yog lub ntsuas ntsuas rau cov kua mem hloov. Hom anilox cov menyuam uas koj siv los txiav txim seb tus number case koj tau txais. Lub ntsiab tsis zoo ntawm anilox rollers yog: tus naj npawb ntawm cov kab, lub peev xwm ntawm tus number case, thiab lub kaum sab xis. Tus naj npawb ntawm cov kab ntawm anilox cov menyuam yog hais txog tus naj npawb ntawm cov qhov mesh rau ib chav tsev ntev raws li axial kev taw qhia ntawm anilox roller. Cov ntawv luam tawm kuj muaj cov kab, thiab qhov tsawg tshaj plaws hauv cov duab yog dots. Tus naj npawb ntawm cov dots ib nti sib haum rau cov kab ntawm cov ntawv luam ntawv.

Nyob rau hauv cov txheej txheem luam ntawv flexographic, sib piv cov xov tooj ntawm cov kab ntawv luam ntawv nrog cov xov tooj ntawm anilox roller kab yog qhov tseem ceeb heev. Peb qhov kev pom yav dhau los yog: tus naj npawb ntawm cov kab rau anilox rollers yuav tsum yog 4 ~ 7 npaug ntawm cov kab ntawv luam ntawv. Txawm li cas los xij, txij li thaj chaw dot thiab cov kab noj hniav tsis tuaj yeem ua tau tiav, cov kua dej hauv zos dhau los ntawm cov kab noj hniav yuav tshwm sim ntawm cov npoo ntawm cov dots. Cov number case ntau dhau tsis tuaj yeem hloov pauv tag nrho los ntawm cov qhov mesh ntawm cov menyuam anilox mus rau cov dots ntawm cov ntawv luam ntawv zoo li cov khoom siv number case; Hloov chaw, nws raug xa mus rau hauv arcs mus rau cov dots raws li viscosity thiab qhov nro ntawm qhov chaw. Qhov zoo ntawm qhov kev hloov pauv no ua rau muaj kev pheej hmoo zais ntawm clogging lub phaj. Qee qhov teeb meem tom qab ntawd tau ua rau peb rov kho peb qhov kev pom yav dhau los: thaum xaiv tus naj npawb ntawm anilox cov menyuam kab kom phim tus naj npawb ntawm cov kab ntawv luam ntawv, kev soj ntsuam zoo ntawm 4 ~ 7 zaug yuav tsum tsis txhob cia siab rau 4 ~ 7 zaug nkaus xwb. Hloov chaw, peb yuav tsum tau tshaj tawm qhov kev soj ntsuam ntau ntawm qhov tsawg kawg nkaus dot txoj kab uas hla ntawm lub phaj luam ntawv Loj dua lossis sib npaug rau qhov qhib txoj kab uas hla ntawm lub mesh qhov ntawm lub anilox roller.

Txawv txawv printing siab

Lub tshuab luam ntawv siab xa mus rau hauv flexo luam ntawv feem ntau suav nrog ob hom kev siab: ua ntej, lub siab los ntawm anilox cov menyuam ntawm cov ntawv luam ntawv cov menyuam, uas peb hu ua inking siab; thib ob, lub siab los ntawm lub phaj rau cov menyuam lub siab xav, uas peb hu ua luam ntawv siab. Lub siab no los ntawm qhov sib txawv ntawm ob lub rollers nias lub phaj luam ntawv.

Qhov laj thawj tseem ceeb ntawm qhov txawv txav ntawm lub siab yog: cov neeg kho tshuab tsis raug thiab cov nqi hloov tsis tsim nyog. Mechanical raug yuam kev feem ntau yog hais txog qhov ua yuam kev radial runout ntawm txhua tus menyuam, tseem paub hauv kev lag luam raws li concentricity yuam kev. Feem ntau, txawm tias nws yog satellite flexograph lossis chav tsev - hom flexograph, qhov yuam kev radial runout ntawm txhua tus menyuam yuav tsum tau tswj tsis pub dhau 10 ~ 20u, uas yog ib qho tseem ceeb heev. Kev kho tsis tsim nyog feem ntau yog hais txog qhov sib txawv ntawm cov yob tsis raug kho kom raug, tshwj xeeb tshaj yog nruab nrab ntawm cov menyuam anilox thiab cov ntawv luam ntawv phaj rau cov menyuam, uas yog qhov tseem ceeb ntawm kev ua haujlwm ntawm tus number case siab. Yog tias tus number case siab dhau lawm, cov dots ntawm lub phaj luam ntawv yuav deform nyob rau hauv siab, thiab ntau tus number case yuav ua raws li cov dots, inevitably spill tawm sab nraud. Nyob rau ntawm lub sijhawm no, yog tias lub tshuab luam ntawv tsis zoo siab, lub phaj blockage feem ntau yuav tshwm sim. Tsis tas li ntawd, cov ntawv luam ntawv tsis sib xws kuj yog ib qho ntawm ntau qhov ua rau muaj kev txawv txav ntawm kev luam ntawv siab.

Kev sib koom ua haujlwm tsis raug ntawm tus cwj mem thiab qhov nro ntawm lub phaj luam ntawv

Qhov nro ntawm daim ntawv thiab zaj duab xis tuaj yeem ntsuas tau, thiab qhov nro ntawm tus number case kuj tuaj yeem ntsuas. Vim qhov sib txawv ntawm cov resin thiab formulation, qhov nro ntawm tus number case kuj txawv. Qhov ntau dua qhov sib txawv ntawm qhov nro ntawm tus number case thiab luam ntawv substrate, qhov zoo dua nws printability.

Hauv luv luv -txoj kev luam ntawv hauv flexographic luam ntawv, tus number case yog thawj zaug xa mus rau lub phaj luam ntawv, thiab tom qab ntawd mus rau lub tshuab luam ntawv substrate. Qhov no thawj zaug tsa qhov teeb meem ntawm nro txuam ntawm tus number case thiab cov ntawv luam ntawv. Rau tus number case thiab luam ntawv phaj, vim tias qhov sib txawv ntawm qhov sib txawv me me, tus number case yooj yim hloov ntawm lub phaj mus rau lub substrate, tawm hauv me me los yog tsis muaj residue ntawm lub phaj. Yog tias qhov sib txawv ntawm qhov sib txawv ntawm tus number case thiab cov ntawv luam ntawv tsis yog me me, tus number case ntawm lub phaj yuav tsis hloov kom huv si, ua rau tus number case los ua kom muaj kev nyuaj siab ntawm ob lub dots, ua rau lub phaj thaiv.

02

Cov txheej txheem los daws flexographic phaj clogging

Raws li cov laj thawj saum toj no, cov kev daws teeb meem hauv qab no tuaj yeem sim daws qhov teeb meem ntawm phaj clogging hauv flexographic luam ntawv:

01

Xaiv tus naj npawb ntawm anilox cov menyuam kab raws li lub hauv paus ntsiab lus ntawm qhov tsawg kawg nkaus dot txoj kab uas hla ntawm lub phaj luam ntawv Loj dua los yog sib npaug rau lub mesh qhib txoj kab uas hla ntawm lub anilox roller; tsis tas yuav txwv cov tsoos 4 ~ 7 zaug.

02

Kho cov khoom siv nrog cov neeg kho tshuab raug yuam kev dhau cov qauv kom ntseeg tau tias ua raws.

Tswj lub inking siab zoo, thiab nco ntsoov tsis txhob siv nws ntau dhau. Thaum kho cov inking siab, pib los ntawm lub teeb mus rau hnyav, maj mam nce lub siab, es tsis txhob maj mam nce ntau dhau thiab rov qab los. Tom qab kho tus number case siab, maj mam kho lub tshuab luam ntawv siab. Yog tias lub siab zoo li qub, tus cwj mem yuav siv rau txhua qhov chaw ntawm lub phaj, thiab cov dots yuav tsis deform. Lub sijhawm no, txo qhov siab me ntsis kom paub meej tias cov ntawv luam tawm yog lawm, tom qab ntawd nrawm dua. Yog tias tus number case siab poob ntau dhau lawm, hollow dots yuav tshwm sim ntawm cov ntawv luam tawm, ua rau qee qhov sib txawv ntawm tus number case saturation, tab sis qhov teeb meem thaiv yuav zoo heev.

Kev kho qhov tsis sib xws ntawm cov ntawv luam ntawv thiab ob npaug -ib daim kab xev yog ua los ntawm kev muab cov ntawv luam ntawv tiaj tus es tsis txhob ua kom cov ntawv luam tawm ntau dua, uas yog lub tswv yim tseem ceeb hauv kev ua haujlwm. Kev ntsuas kev ntsuas feem ntau yog: daim kab xev tuaj yeem siv rau hauv cov phaj khoom, feem ntau nrog ib qho -ib daim kab xev thickness ntawm li 50 ~ 60u. Koj tuaj yeem siv cov xim shellac hauv qab lub vaj huam sib luag cable; txhua txheej yuav tsum yog li 4u tuab; yog tias ib txheej tsis txaus, koj tuaj yeem thov ob peb txheej.

Siv tsawg- ntom ntom ob- daim kab xev rau cushion txawv txav deformation ntawm cov dots. Tsawg- ntom ob- daim kab xev muaj elasticity zoo. Txawm hais tias pinholes zoo li tshwm sim thaum luam ntawv cov khoom siv, nws yog qhov kev xaiv zoo tshaj plaws rau kev luam ntawv kab. Cov dots yog resistant rau deformation thiab muaj zoo rov qab.

Nyob rau hauv cov nqe lus ntawm kev txiav txim ntawm lub phaj compression, tus qauv yuav tsum tau compressed maj mam los ntawm cheeb tsam nrog tsawg mesh kab mus rau cheeb tsam nrog ntau kab. Nyob rau hauv lwm yam lus, nyob rau hauv lub protruding qhov chaw ntawm lub phaj, lub siab yuav tsum tau maj mam maj mam los ntawm qhov tsawg - ceev mus rau qhov siab - qhov chaw ceev. Lub sijhawm no, kev hloov pauv siab yog maj mam, tsis nrawm. Yog tias qhov tsis sib xws yog qhov tseeb, qhov tshwm sim ntawm kev thaiv lub rooj tsavxwm nce ntau.

Ua tib zoo saib xyuas qhov nruam txuas ntxiv thaum lub sijhawm teeb tsa. Vim yog qhov sib cuam tshuam ntawm cov ntawv sau, ib txwm muaj qhov sib txawv ntawm qhov siab thiab qis txoj haujlwm ntawm cov khoom tawm ntawm cov ntawv luam ntawv ntsug, thiab qhov cuam tshuam rau lub siab yuav tsis tu ncua. Yog hais tias lub siab strips ntawm qhov sib npaug ntawm qhov dav ntxiv rau ob sab ntawm lub phaj luam ntawv, cov strips yuav qhwv ib ncig ntawm tag nrho cov phaj rau cov menyuam, zoo heev txo qhov cuam tshuam ntawm lub siab. Lwm txoj kev yog staggered layout, thiaj li hais tias tag nrho perimeter tsis muaj ib tug kiag li tsis muaj txoj hauj lwm. Qhov no tso cai rau lub phaj rau cov menyuam khiav zoo dua thiab txo qhov cuam tshuam.

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Xaiv tus cwj mem uas tsim nyog thiab nrhiav cov inks uas muaj qhov nro zoo ib yam li cov ntawv luam ntawv.

Xaiv cov phaj tsis ua kom lub ntsej muag nyuaj. Koj tuaj yeem xaiv cov khoom siv phaj lossis kho qhov ntsuas UVC thiab UVA thaum lub phaj ua. Yog tias lub phaj luam ntawv nres thiab ntxuav thaum lub tshuab luam ntawv, tsis txhob maj tig nws. Siv compressed cua tshuab kom qhuav lub phaj. Tsis txhob pib lub tshuab tam sim ntawd yog tias nws tsis qhuav tag. Qhov no yog vim hais tias seb lub tshuab luam ntawv puas qhuav tag yog ze rau nws qhov nro.

Cov kuab tshuaj tshwj xeeb yog siv los kho qhov tsis zoo ntawm cov ntawv luam ntawv kom nws nyob ze rau tus number case.