Kuyera kwa zamkati kumakhudza ubwino wa pepala

Kuyera kwa pulp kumatanthauza kuchuluka kwa cellulose ndi kuchuluka kwa zodetsa zomwe zili mu pulp. Pulp yoyenera iyenera kukhala ndi cellulose yambiri, pomwe kuchuluka kwa hemicellulose, lignin, phulusa, zochotsera ndi zina zomwe sizili ndi cellulose kuyenera kukhala kochepa momwe zingathere. Kuchuluka kwa cellulose kumatsimikizira mwachindunji kuyera ndi kugwiritsa ntchito kwa pulp, ndipo ndi chimodzi mwa zizindikiro zazikulu zowunikira mtundu wa pulp. Makhalidwe a pulp yoyera kwambiri:

(1) chifukwa cha kulimba kwambiri, cellulose ndiye chinthu chachikulu chomwe chimapanga mphamvu ya pepala, zamkati zoyera kwambiri zimatanthauza kuchuluka kwa cellulose, kotero pepala lopangidwa limakhala ndi kukana kwamphamvu kwa kung'ambika, kukana kupindika ndi zinthu zina zakuthupi ndi zamakanika, zomwe zimapangitsa kuti pepalalo likhale ndi moyo wautali.
(2) Ulusi wolimba wa cellulose, womwe ndi wofewa, ukhoza kupanga netiweki yolumikizana bwino pakati pa pepalalo kuti liwonjezere mgwirizano wamkati, kotero kuti pepalalo silingathe kusweka mosavuta likakumana ndi mphamvu zakunja, kuti liwonjezere mphamvu yonse ya pepalalo.
(3) kuyera kwambiri, kupezeka kwa zonyansa nthawi zambiri kumakhudza kuyera ndi kunyezimira kwa pepala. Masamba oyera kwambiri, chifukwa chochotsa zonyansa zambiri zamitundu, zimapangitsa pepalalo kuwonetsa kuyera kwachilengedwe kwambiri, komwe kuli koyenera kwambiri kusindikiza, kulemba ndi kulongedza, ndi zina zotero, ndipo kumawonjezera mawonekedwe a chinthucho.
(4) kukhala ndi mphamvu zabwino zotetezera magetsi, cellulose ili ndi mphamvu zabwino zotetezera kutentha, pomwe zinthu zomwe si cellulose zili mu zamkati, monga lignin, zitha kukhala ndi zinthu zoyendetsera mpweya kapena zozungulira, zomwe zimakhudza kutetezera magetsi kwa pepala. Chifukwa chake, mapepala opangidwa kuchokera ku zamkati zoyera kwambiri ali ndi ntchito zambiri muukadaulo wamagetsi, monga pepala lotetezera chingwe, pepala la capacitor, ndi zina zotero.
Kukonzekera mapepala apulasitiki oyeretsedwa kwambiri, makampani amakono a mapepala amagwiritsa ntchito njira zosiyanasiyana zapamwamba zoyeretsera mapepala, monga kupopera mankhwala (kuphatikizapo kupopera kwa sulphate, kupopera kwa sulphite, ndi zina zotero), kupopera kwa makina (monga kupopera kutentha kwa makina oyeretsera TMP) ndi kupopera kwa makina oyeretsera mankhwala (CMP) ndi zina zotero. Njirazi zimapangitsa kuti mapepala akhale oyera mwa kuchotsa kapena kusintha zinthu zomwe sizili ndi cellulosic.
Mapepala oyera kwambiri amagwiritsidwa ntchito kwambiri m'magawo ambiri monga mapepala apamwamba kwambiri, mapepala olongedza, mapepala apadera (monga mapepala oteteza magetsi, mapepala osefera, mapepala azachipatala, ndi zina zotero) ndi mapepala apakhomo, zomwe zimakwaniritsa muyezo wapamwamba wa pepala womwe umafunika m'mafakitale osiyanasiyana.

Yashi Paper imangopanga 100% virgin bamboo pulp, single ci bamboo fiber, yomwe ndi chisankho chabwino kwambiri cha pepala lapakhomo loyera kwambiri komanso labwino kwambiri.