Tus yuam sij rau gravure number case printing zoo: viscosity

Viscosity yog cuam tshuam los ntawm ntau yam, suav nrog cov viscosity inherent ntawm cov binder resin tov, pigment zog (xws li roj absorption, piv, particle loj, thiab dispersion), compatibility ntawm pigments thiab binders, raws li zoo raws li hom thiab tus nqi ntawm cov kuab tshuaj. Cov qauv yav tom ntej rau cov yas intaglio inks yog kev sib xyaw ua ke ntawm cov concentration siab nrog tsawg viscosity.

• Viscosity muaj qhov cuam tshuam loj rau kev luam ntawv zoo: viscosity siab txo cov kua dej, ua rau tsis tiav cov hlwb lossis cov pob dawb; nws siv zog ntau dua rau ntawm tus kws kho mob hniav, ua rau kev nyuaj siab thiab cov hniav streaks; thiab nws hampers ink hloov, ua rau blockages. Conversely, tsis tshua muaj viscosity txhawb nqa ntau tus number case flow, manifesting li watermarks, txo clarity, thiab ib tug muaj peev xwm ntawm electrostatic teeb meem, uas cuam tshuam xim uniformity.

• Kev ua hauj lwm viscosity ntawm tus number case yuav tsum tau kho raws li kev luam ntawv ceev thiab phaj yam ntxwv. Kev kub ceev luam ntawv yuav tsum tau qis viscosity rau kev hloov cov number case zoo; Txawm li cas los xij, inks inferior tuaj yeem tsim cov cim dej ntawm cov viscosities tsawg heev, tsis tsim nyog rau cov txheej txheem siab ceev. Cov tones sib sib zog nqus thiab cov cheeb tsam uas yuav tsum tau muaj viscosity inks ntau dua rau cov ncauj lus kom ntxaws, thaum cov cheeb tsam sib dua, tshwj xeeb tshaj yog cov uas muaj qhov tseem ceeb, tau txais txiaj ntsig los ntawm qis viscosity inks. High-quality inks muaj ntau qhov dav ntawm cov viscosities hloov tau, thaum cov neeg pluag muaj qhov nqaim thiab txwv rau kev ua haujlwm ntawm cov viscosities siab dua.

• Cov yam ntxwv cuam tshuam rau tus number case ua hauj lwm viscosity encompass hnyav ntxiv piv, hnyav dissolution efficiency, ambient thiab number case kub, hnyav evaporation tus nqi, thiab hnyav tshuav nyiaj li cas. Ntxiv cov kuab tshuaj kom tsim nyog tuaj yeem kho viscosity, tab sis overdoing nws tuaj yeem ua rau muaj qhov tsis xws luag; Cov kuab tshuaj sib txawv ua ke txhim kho solubility; kub hloov pauv cuam tshuam rau viscosity thiab ziab lub sij hawm; Cov kuab tshuaj evaporation yuav tsum tau ua kom tiav raws sijhawm kom ruaj khov viscosity; thiab hnyav imbalance tuaj yeem ua rau viscosity anomalies los yog resin nag lossis daus, yuav tsum tau hloov kho cov kuab tshuaj muaj pes tsawg leeg rau equilibrium restoration.