Cov ntawv siv hauv peb lub tuam txhabkhob cij,pizza thawvthiab lwm yamcov thawv ntim khoom nojyog tsim los ntawm cov txheej txheem siab tshaj plaws papermaking, muab txhua tus qhua nrog cov khoom zoo tshaj plaws
Thaum lub sij hawm Western Han Dynasty (206 BC), Tuam Tshoj twb muaj papermaking, thiab nyob rau hauv thawj xyoo ntawm Yuanxing (105) nyob rau hauv Eastern Han Dynasty, Cai Lun txhim kho cov papermaking.Nws siv tawv tawv, hemp taub hau, ntaub, nuv ntses net thiab lwm yam ntaub ntawv raw los ua daim ntawv los ntawm cov txheej txheem ntawm tamping, pounding, frying, ci, thiab lwm yam, uas yog lub hauv paus ntawm niaj hnub ntawv.Cov ntaub ntawv zoo li no, cov khoom siv raw yog yooj yim mus nrhiav, nws yog pheej yig heev, qhov zoo kuj tau txhim kho, thiab nws yog maj mam siv.Ua kev nco txog Cai Lun qhov kev ua tiav, cov tiam tom ntej hu ua daim ntawv no "Cai Hou paper".
Daim ntawv yog crystallization ntawm kev paub ntev thiab kev txawj ntse ntawm cov neeg ua haujlwm Suav.Daim ntawv yog cov ntawv zoo li cov khoom siv fiber ntau siv rau kev sau ntawv, luam ntawv, pleev xim lossis ntim khoom.Feem ntau, nws yog tsim los ntawm cov dej ncua kev kawm ntawv ntawm pulped cog fibers, uas yog interlaced nyob rau hauv lub net, pib dehydrated, thiab ces compressed thiab qhuav.Tuam Tshoj yog thawj lub teb chaws nyob rau hauv lub ntiaj teb no tsim daim ntawv.
Niaj hnub no txoj kev siv tshuab yog nce mus sai heev, thiab cov txheej txheem papermaking niaj hnub tau raug kho.
Groundwood Pulp siv cov cuab yeej sib tsoo kom tau cov ntoo fiber ntau, tseem hu ua mechanical pulp, uas tuaj yeem muab faib ua cov khoom siv hluav taws xob, cov tshuab ua kom zoo nkauj, cov ntaub ntawv thermomechanical, thiab lwm yam.
Cov ntaub so ntswg siv tshuaj los cais cov fibers ntawm lignin kom tau cov fibers ntoo, uas tuaj yeem muab faib ntxiv rau hauv cov ntaub soda pulp, sulfite pulp, thiab sulfate pulp.
Semichemical pulp (Semichemical Pulp) Kev sib xyaw cov txheej txheem thiab tshuaj lom neeg pulping, nws tuaj yeem muab faib ntxiv rau hauv nruab nrab semi-chemical pulp, txias soda pulp, chemical mechanical pulp, thiab lwm yam.
Post lub sij hawm: Jun-30-2022