Phunziro lofananiza la kusindikiza

Newsprint ali otsika maziko kulemera, otsika whiteness ndi zabwino chochuluka, ndi kupita patsogolo kwa luso kupanga, newsprint pang'onopang'ono ntchito kusindikiza mtundu;pepala lokutidwa imakutidwa pamwamba pa mapepala oyambira, omwe amakhala osalala kwambiri, oyera kwambiri komanso onyezimira kwambiri, mtundu wosindikizira ndi wowala, zigawo zake zimakhala zomveka bwino, ndipo nthawi zambiri zimagwiritsidwa ntchito posindikiza zinthu zabwino; bolodi loyera lopaka ndi chophimba pamwamba pa bolodi loyera, lomwe liri ndi kusalala bwino, gloss yabwino ndi kuuma kwakukulu, ndipo nthawi zambiri amagwiritsidwa ntchito popanga katundu. Pali kusiyana kwa zinthu zakuthupi monga kusalala, gloss, kuyamwa kwa inki, kuyera, ndi kuchuluka kwa mapepala atatuwa.

Pambuyo pa mayesero oyesera, zolemba zamanyuzipepala zimakhala ndi zochulukira bwino kwambiri, zoyera zotsika kwambiri, zamphamvu kwambiri za PPS, gloss yoyipa kwambiri, ndi kupenya kochepa kwambiri; ndipepala lojambula imakhala yolimba kwambiri, yoyera kwambiri, yotsika kwambiri ya PPS, yonyezimira bwino kwambiri, komanso yowoneka bwino. Pamwamba; Pepala loyera lokutidwa lili ndi zochulukira bwino, zoyera kwambiri, zowoneka bwino za PPS komanso zonyezimira bwino. Zamkati zopangira nyuzipepala ndi zamkati zamakina, zomwe zimasunga lignin momwe zingathere panthawi yopanga, ndi zoyera zochepa komanso zochulukira zabwino, koma zolemba zamanyuzipepala zimakhala ndi zolemetsa zochepa komanso zowoneka bwino poyerekeza ndi pepala lokutidwa. Mapepala okutidwa ndi bolodi loyera amapaka utoto pamwamba pa pepala loyambira, ndipo pigment mu zokutira imadzaza madontho osagwirizana pamapepala. Pambuyo pa calendering ndi kumaliza, tinthu tating'onoting'ono ta pigment timakonzedwa mwadongosolo, zomwe zimachepetsa kuuma kwa pepala lophimbidwa ndi bolodi loyera la PPS ndikuwonjezera kusalala. Popeza gloss makamaka zimadalira kusalala kwa pepala pamwamba, gloss wa pepala (bolodi) ali mu dongosolo losiyana ndi roughness wa PPS, ndiye pepala TACHIMATA> makatoni woyera> newsprint.

Kuwala kosindikiza kumakhudzidwa ndi kusalala kwa pepala pamwamba ndi ntchito ya inki mayamwidwe. Kupaka pepala kumatha kusintha kwambiri kusindikiza kwa pepala. Pamwamba pa nyuzipepala ndi yovuta ndipo imayamwa bwino inki. The kusindikiza gloss ndi 17.6% yokha, ndi pamwamba kusalala kwapepala lopaka utoto ndi mkulu. , Mayamwidwe a inki ndi apakati, gloss yosindikiza ndi 86.6%, ndipo gloss yosindikiza ya bolodi loyera ndi 82.4%.

Mapepala okhala ndi mayamwidwe a inki pang'ono, komanso owoneka bwino kwambiri, amatulutsa mitundu yodzaza kwambiri. Pepala la matte lomwe limayamwa 100% limasindikiza mitundu yoyipa kwambiri. Kuchita bwino kwa mapepala okutidwa ndipamwamba kwambiri, kutsatiridwa ndi bolodi loyera lokutidwa, ndipo kugwiritsa ntchito bwino kwa pepala pamapepala ndikotsika kwambiri. Kuchepetsa moyenerera mayamwidwe a inki a nyuzipepala ndi kuchepetsa kukhwima kwa PPS kwa nyuzipepala kudzathandiza kuti mapepala ake azikhala bwino.