10. Qhov cuam tshuam ntawm cov ntawv sau rau ntawm cov ntawv zoo li cas?
A: ntxiv cov ntawv ntim rau cov ntawv luam tuaj yeem txhim kho cov ntawv luam tawm ntawm cov ntawv, xws li kev nce qib, kev sib txuam, opacity, thiab tawv ncauj ntawm daim ntawv. Txhim kho txoj kev sib txuam nrog, muag muag, thiab ruaj khov ntawm cov ntawv rau number case, uas yog pab txhawm rau txhim kho qhov zoo ntawm cov ntawv luam tawm. Yog lawm, muab tub lim ntau dhau hauv ntawv kuj coj tau ib co kev phem, feem ntau yog rau qhov yuav txo tau ntawv zog thiab cov nyhuv sizing. Hauv kev luam ntawv, nws yooj yim poob hmoov thiab plaub hau, thiab cov muab tub lim yuav hloov mus rau luam ntawv phaj thiab pam vov, uas ua rau cov ntawv luam tawm thiab lwm yam tshwm sim. Vim tias qhov kev sib txhuam ntawm qhov sib txig, cov ntawv luam tawm yuav hnav, tab sis qhov sib ntxiv ntawm cov txheej txheem calcium calcium carbonate (PCC) tuaj yeem ua rau cov luam ntawv tiaj tus hnav daim hlau kom tsawg kawg (tam sim no siv los ntawm Jindong).
11. Dab tsi yog opacity ntawm daim ntawv?
A: opacity yog hais txog opacity ntawm daim ntawv. Lub opacity ntawm daim ntawv yog nyob ntawm lub teeb tawg scattering muaj peev xwm ntawm daim ntawv, muaj pes tsawg tus lub teeb scattering cuam tshuam sab hauv daim ntawv (piv txwv li cov xov tooj ntawm qhov muaj feem ywj siab sab hauv), thiab qhov refractive index sib txawv ntawm qhov sib txawv ntawm qhov sib txawv. Qhov ntau lub teeb scattering interfaces, ntau dua qhov refractive index qhov sib txawv ntawm qhov sib txawv tawg, qhov ntau dua lub teeb scattering muaj peev xwm, thiab ntau dua cov opacity ntawm daim ntawv.
12. Dab tsi cuam tshuam rau cov opacity ntawm daim ntawv?
A: daim ntawv uas tsis muaj muab tub lim yog tsim ntawm fiber ntau thiab huab cua. Huab cua muaj nyob hauv qhov hws nruab nrab ntawm cov leeg. Vim tias qhov ntsuas refractive ntawm lub fiber thiab huab cua yog qhov sib txawv thaum lub teeb nqaj irradiates daim ntawv saum npoo, ib feem ntawm lub teeb ntswj ntawm qhov sib cuam tshuam ntawm cov paib thiab huab cua, muab daim ntawv rau qee yam (qis dua) opacity, uas yog tsom hauv luam ntawv , thiab kev ua yeeb yam tseem ceeb tau yooj yim hla. Tom qab ntxiv cov ntawv sau nrog qhov ntsuas qhov zoo siab siab dua cellulose rau hauv daim ntawv, tus naj npawb ntawm lub teeb tawg uas cuam tshuam hauv daim ntawv nce, uas yog, muaj peb qhov cuam tshuam sib txawv ntawm cov ntawv fiber thiab huab cua, ntawm qhov muab tub lim thiab fiber ntau, thiab ntawm qhov muab tub lim thiab cua. Ntawm peb qhov kev cuam tshuam no, qhov sib txawv ntawm qhov ntsuas siab refractive ntawm muab tub lim thiab huab cua yog qhov loj dua. Raws li qhov tshwm sim, lub teeb tawg ntawm qhov interface ntawm qhov muab tub lim thiab lub teeb tau txais qhov siab tshaj plaws opacity.
13. Yuav ua li cas cov ntawv sau tuaj txhim kho qhov sib thooj ntawm cov ntawv nto?
A: lub network tsim los ntawm interweaving fibers ib txwm muaj coob tus pores thiab nto tsis sib xws. Ntxiv cov ntawv foob zoo tuaj yeem txhim kho qhov muag thiab yas ntawm daim ntawv, thiab tuaj yeem nqa tawm kev kho kom zoo dua, thiaj li txhawm rau txhim kho cov ntaub ntawv duness tom qab calendering.
14. Qhov muab tub lim cuam tshuam rau lub zog ntawv npaum li cas?
A: Qhov sib xyaw ua ke ntawm cov fibers yog lub hauv paus ntawm daim ntawv muaj zog. Qhov sib ntxiv ntawm cov ntxig tau txo cov kev sib xyaw ntawm cov fibers, yog li ntxiv ntau ntawm cov tub lim yuav txo cov ntawv lub zog. Ntawm lawv, lub zog tensile, folding lub zog, thiab tawg lub zog txo qis heev, thaum lub zog tsim kua muag poob qis dua me ntsis. Tus nqi ntawm cov muab tub lim siv tsuas siv rau qee yam.