Cov xwm txheej no cuam tshuam rau kev nqus ntawm Offset Ink Los ntawm Ntawv
Jan 04, 2023
Tus cwj mem nqus ntawm daim ntawv yog qib ntawm kev nqus ntawm cov ntawv khi hauv tus number case. Nws yog cov khoom nto ntawm daim ntawv fibers, thiab yog ib qho kev xav txog ntawm cov khoom xws li fiber ntau interweaving, muab tub lim thiab roj hmab cov khoom thiab cov ntsiab lus. Nws cov essence yog capillary adsorption nyhuv ntawm fiber nws tus kheej thiab qhov chaw nruab nrab ntawm cov fibers ntawm tus number case binder.
Yog li ntawd, qhov ntau dua tus number case nqus ntawm daim ntawv, qhov zoo dua tus number case absorption, thiab vice versa. Tus cwj mem nqus ntawm cov ntawv sib txawv yog txawv heev. Offset daim ntawv feem ntau tsis tuaj yeem nqus tau tus cwj mem zoo, tshwj xeeb tshaj yog tus cwj mem nqus ntawm cov ntawv qib siab xws li ntawv coated, daim npav, thiab daim ntaub ntawv yog nruj me ntsis txwv. Cov cwj mem nqus ntawm cov ntawv xov xwm, ntawv sau, thiab ntawv ntawv ntawv yog qhov muaj zog heev.
① Fiber nto smoothness. Qhov smoother ntawm daim ntawv fiber ntau, qhov tsis muaj zog ntawm tus number case absorption. Yog hais tias lub smoothness ntawm daim ntawv coated yog siab, tus number case absorption tsis zoo.
②Qhov zoo ntawm daim ntawv muab tub lim. Cov av nplaum dawb muaj qhov nqus tau zoo, thaum tus number case nqus ntawm kaolin (lub lauj kaub tais diav), talc, thiab barium sulfate siv hauv cov ntawv qib siab tsis zoo.
③ Tus nqi ntawm daim ntawv muab tub lim thiab roj hmab siv. Daim ntawv nrog ntau cov kua nplaum thiab muab tub lim muaj qhov nqus dej tsis zoo, thiab rov ua dua. Feem ntau siv cov ntaub ntawv sizing yog rosin pos hniav, txhuas sulfate, starch, casein, paraffin thiab lwm yam. Sizing muaj cov nyhuv ntawm thaiv qhov khoob ntawm fibers thiab txo cov hlab ntsha capillary. Cov khoom siv roj hmab kuj muaj qee yam dej tsis kam, uas tuaj yeem cuam tshuam kev nkag mus ntawm dej, txhim kho gloss, lub zog, thiab suab ntawm daim ntawv thiab tiv thaiv cov ntawv ntawm fluffing. Ntxiv qee cov fillers, sizing cov ntaub ntawv, thiab pigments tuaj yeem txhim kho qhov smoothness ntawm daim ntawv nto, txo cov ntawv pob tshab thiab tus cwj mem nqus. Ua kom cov xim dawb thiab qhov hnyav ntawm daim ntawv.
④Kuv xav tias daim ntawv uas muaj lignin ntau dua muaj zog number case nqus. Yog tias cov ntawv xov xwm muaj lignin ntau dua, tus cwj mem nqus tau muaj zog.
⑤ Kev nqus ntawm offset luam ntawv number case los ntawm daim ntawv kuj muaj feem xyuam rau lub siab ntawm lub tshuab luam ntawv, lub sij hawm luam ntawv ntev thiab number case viscosity.
Nyob rau hauv luv luv, tus cwj mem nqus ntawm daim ntawv yog ob txoj kev cuam tshuam ntawm daim ntawv thiab number case, thiab muaj feem xyuam rau cov txheej txheem luam ntawv.
