Cov cua txias thoob plaws tau cuam tshuam tsis tsuas yog txhua tus neeg taug kev, tab sis kuj tseem tsim cov txheej txheem luam ntawv vim huab cua kub tsawg. Yog li ntawd, nyob rau hauv cov huab cua kub no, dab tsi cov ntsiab lus yuav tsum tau them sai sai rau hauv ntim printing? Hnub no, Hongze yuav qhia rau koj paub cov ntsiab lus uas yuav tsum tau them sai sai rau hauv kev luam ntawv thiab ntim cov txheej txheem hauv huab cua kub tsis tshua muaj ~
01
Tiv thaiv Thickening ntawm Rotary Offset Printing Ink
Rau tus cwj mem, yog tias muaj qhov hloov pauv tseem ceeb hauv chav tsev kub thiab cov kua dej kub ntawm tus number case, lub ink flow xeev yuav hloov, thiab cov xim xim kuj yuav hloov raws li.
Nyob rau tib lub sijhawm, huab cua kub tsawg yuav muaj kev cuam tshuam loj rau tus lej hloov pauv hauv cov chaw siab. Yog li ntawd, thaum luam ntawv high-end khoom, nws yog ib qhov tsim nyog los tswj qhov kub thiab av noo ntawm lub tshuab luam ntawv rhiav tsis muaj teeb meem dab tsi. Tsis tas li ntawd, thaum siv tus cwj mem nyob rau lub caij ntuj no, nws yog ib qho tsim nyog yuav tsum tau preheat nws ua ntej kom txo tau qhov kub thiab txias hloov ntawm tus number case nws tus kheej.
Nco ntsoov tias thaum qhov kub thiab txias, tus number case yog tuab heev thiab muaj viscosity siab, tab sis nws yog qhov zoo tshaj kom tsis txhob siv cov roj diluents lossis inking roj los kho nws cov viscosity. Vim hais tias thaum cov neeg siv yuav tsum tau kho tus cwj mem lub zog, tag nrho cov nyiaj ntawm ntau yam additives uas yuav tsum tau nyob rau hauv cov ntaub ntawv raw uas tsim los ntawm number case manufacturers yog txwv, tshaj qhov txwv. Txawm hais tias nws tuaj yeem siv tau, nws ua rau tsis muaj peev xwm ua tau zoo ntawm tus number case thiab cuam tshuam rau kev luam ntawv zoo thiab tshuab luam ntawv.
Qhov tshwm sim ntawm number case thickening tshwm sim los ntawm qhov kub thiab txias tuaj yeem daws tau los ntawm cov hauv qab no:
1) Muab tus cwj mem qub tso rau ntawm lub tshuab hluav taws xob lossis ib sab ntawm lub tshuab hluav taws xob, maj mam ua kom sov nws thiab maj mam rov qab mus rau qhov qub.
2) Thaum xav tau kev kub ceev, dej kub tuaj yeem siv rau cov cua sov sab nraud. Txoj kev tshwj xeeb yog nchuav cov dej kub rau hauv lub phiab, thiab tom qab ntawd muab lub thoob (lub thawv) ntawm tus number case rau hauv dej, tab sis kom tsis txhob muaj dej vapor los ntawm soaking. Thaum cov dej kub poob rau ib ncig ntawm 27 degrees Celsius, tshem tawm, qhib lub hau, thiab do kom sib npaug ua ntej siv. Qhov kub ntawm lub rhiav luam ntawv yuav tsum tau khaws cia nyob ib ncig ntawm 27 degrees Celsius.
02
Siv cov kua roj vanish tiv thaiv UV
UV kua roj vanish kuj yog ib yam khoom uas yooj yim cuam tshuam los ntawm qhov kub thiab txias, yog li ntau tus neeg muag khoom tshwj xeeb hauv kev tsim ob hom kev sib txawv: lub caij ntuj no thiab lub caij ntuj sov. Cov ntsiab lus ntawm lub caij ntuj no mis yog qis dua li ntawm lub caij ntuj sov mis, uas tuaj yeem txhim kho qhov kev ua tau zoo ntawm cov kua roj vanish thaum qhov kub thiab txias.
Nco ntsoov tias yog tias lub caij ntuj no mis yog siv rau lub caij ntuj sov, nws yog ib qho yooj yim los ua kom tsis tiav cov roj solidification, uas tuaj yeem ua rau kev tiv thaiv thiab lwm yam tshwm sim; Ntawm qhov tsis sib xws, siv cov qauv hauv lub caij ntuj sov hauv lub caij ntuj no tuaj yeem ua rau tsis zoo UV roj qib kev ua haujlwm, ua rau foaming thiab txiv kab ntxwv tev tsis ua haujlwm.
03
Qhov cuam tshuam ntawm huab cua kub qis ntawm daim ntawv
Hauv kev luam ntawv ntau lawm, ntawv yog ib qho ntawm cov khoom siv uas xav tau siab heev rau ib puag ncig kub thiab av noo. Daim ntawv yog cov khoom ntxeem tau nrog cov qauv yooj yim tsim los ntawm cov nroj tsuag fibers thiab cov ntaub ntawv pabcuam, uas muaj zog hydrophilicity. Yog hais tias ib puag ncig kub thiab av noo tswj tsis tau zoo, nws tuaj yeem ua rau daim ntawv deformation thiab cuam tshuam rau kev luam ntawv. Yog li ntawd, kev tswj kom tsim nyog ib puag ncig kub thiab av noo yog qhov tseem ceeb rau kev txhim kho cov ntawv luam tawm zoo thiab txhim kho kev tsim khoom.
Kev ntsuas kub ib puag ncig rau daim ntawv zoo tib yam tsis pom tseeb, tab sis thaum qhov kub ntawm ib puag ncig qis dua 10 ℃, cov ntawv zoo tib yam yuav dhau los ua "nkim", thiab adhesion ntawm tus number case txheej ntawm nws qhov chaw yuav txo qis thaum lub sij hawm luam ntawv, uas yog. yooj yim ua rau deinking.
Daim npav kub thiab nyiaj feem ntau yog tsim los ntawm tooj liab coated ntawv, ntawv dawb board, ntawv dawb, thiab lwm yam ntaub ntawv, thiab tom qab ntawd sib xyaw nrog PET zaj duab xis lossis aluminium ntawv ci.
Cov ntawv kub thiab nyiaj daim npav muaj qhov xav tau ntau dua rau ib puag ncig qhov kub thiab txias vim tias ob qho tib si hlau thiab cov ntaub ntawv yas yog qhov hloov pauv kub heev. Thaum qhov kub thiab txias ib puag ncig qis dua 10 ℃, nws yuav cuam tshuam rau qhov tsim nyog ntawm daim npav kub thiab nyiaj. Thaum qhov chaw khaws cia kub thiab nyiaj daim ntawv yog nyob ib ncig ntawm 0 ℃, tom qab raug thauj los ntawm lub tsev khaws ntaub ntawv mus rau lub rhiav luam ntawv, ib tug loj npaum li cas ntawm cov dej vapor yuav tshwm nyob rau ntawm nws nto vim qhov kub thiab txias, cuam tshuam rau ib txwm luam ntawv thiab txawm. ua rau cov khoom pov tseg.
Yog tias ntsib cov teeb meem saum toj no thiab lub sijhawm xa khoom nruj, cov neeg ua haujlwm tuaj yeem qhib lub UV teeb lub raj thiab cia cov ntawv ua haujlwm tas ib zaug, kom nws qhov ntsuas kub sib npaug nrog qhov kub thiab txias ua ntej luam ntawv.
Tsis tas li ntawd, qhov kub thiab txias qhuav, tsis tshua muaj txheeb ze av noo, thiab noo noo pauv ntawm daim ntawv thiab cua tuaj yeem ua rau daim ntawv qhuav, warp, thiab ntsws, ua rau tsis zoo overprinting.
04
Cov nyhuv ntawm qhov kub thiab txias ntawm cov nplaum nplaum
Adhesive yog cov tshuaj tseem ceeb hauv kev tsim khoom niaj hnub no, thiab nws qhov kev ua tau zoo cuam tshuam ncaj qha rau cov khoom lag luam zoo.
Ib qho tseem ceeb qhia txog kev tsim cov nplaum yog kev tswj qhov kub thiab txias. Cov ntaub ntawv raw ntawm cov nplaum feem ntau yog cov organic polymers, uas muaj kev vam khom siab ntawm qhov kub thiab txias. Qhov no txhais tau hais tias lawv cov khoom siv kho tshuab thiab viscoelasticity cuam tshuam los ntawm kev hloov pauv kub. Nws yuav tsum tau muab sau tseg tias tsis tshua muaj kub yog lub ntsiab culprit ua rau cuav adhesion ntawm nplaum.
Thaum qhov kub thiab txias poob, qhov hardness ntawm cov nplaum hardens, hloov cov kev ntxhov siab ntawm cov nplaum. Nyob rau hauv qhov opposite low-temperature state, lub zog ntawm polymer chains nyob rau hauv cov nplaum yog txwv, txo nws elasticity.
Post lub sij hawm: Nov-11-2023
