Cov txheej txheem ntawm kev ua daim ntawv parchment

Sheepskin yog tsim los ntawm cov nroj tsuag. Sheepskin paper yog pob tshab qib siab ntim ntawv, tseem hu ua sulfuric acid ntawv. Nws yog ib daim ntawv hloov kho uas tau txais los ntawm kev kho sulfuric acid ntawm sheepskin puag daim ntawv. Nws yog ib daim ntawv muaj zog, feem ntau yog ua los ntawm cov ntaub so ntswg los yog cov ntaub so ntswg, thiab tsis ntxiv cov fillers los yog nplaum thaum lub sij hawm tsim khoom. Yog li ntawd, parchment muaj qhov nqus dej zoo thiab cov qauv zoo ib yam. Vim yog kev kho mob sulfuric acid, daim ntawv parchment muaj lub zog zoo thiab siv dav hauv cov khoom lag luam xws li cov khoom siv tshuab, cov cuab yeej, tshuaj, nrog rau cov ntim ntim rau hauv cov zaub mov, tshuaj, tshuaj tua kab mob, thiab lwm yam.