A cikin masana'antar takarda, ilimin halittar fiber yana ɗaya daga cikin mahimman abubuwan da ke ƙayyade kaddarorin ɓangaren litattafan almara da ingancin takarda na ƙarshe. Halin halittar fiber ya ƙunshi matsakaicin tsayin fibers, rabon kauri na bangon fiber cell zuwa diamita ta tantanin halitta (wanda ake magana da shi a matsayin rabon bango-zuwa rami), da adadin heterocytes marasa fibrous da tarin fiber a cikin ɓangaren litattafan almara. Waɗannan abubuwan suna hulɗa da juna, kuma tare suna shafar ƙarfin haɗin ɓangaren ɓangaren litattafan almara, ingancin bushewa, kwafin aikin, kazalika da ƙarfi, tauri da ingancin takarda gabaɗaya.
1) Matsakaicin tsayin fiber
Matsakaicin tsayin zaruruwa ɗaya ne daga cikin mahimman alamun ingancin ɓangaren litattafan almara. Dogayen zaruruwa suna samar da sarƙoƙin cibiyar sadarwa mai tsayi a cikin ɓangaren litattafan almara, wanda ke taimakawa haɓaka ƙarfin haɗin gwiwa da abubuwan ɗaurewar takarda. Lokacin da matsakaicin tsayin fibers ya karu, adadin abubuwan da aka haɗa tsakanin firam ɗin yana ƙaruwa, ƙyale takarda ta fi rarraba damuwa lokacin da aka yi wa sojojin waje, don haka inganta ƙarfin da ƙarfin takarda. Saboda haka, yin amfani da tsawon matsakaicin tsayin fiber, irin su spruce coniferous ɓangaren litattafan almara ko auduga da ɓangaren litattafan almara, na iya samar da ƙarfin mafi girma, mafi kyawun taurin takarda, waɗannan takaddun sun fi dacewa don amfani da buƙatun mafi girman kayan jiki na lokacin, kamar kayan tattarawa, takarda bugu da sauransu.
2) Matsakaicin kaurin bangon fiber cell zuwa diamita na cavity (rabo na bango-zuwa rami)
Matsakaicin bango-zuwa-rago wani muhimmin al'amari ne da ke shafar kaddarorin ɓangaren litattafan almara. Ƙananan bango-zuwa rami rabo yana nufin cewa bangon fiber cell yana da ɗan ƙaramin bakin ciki kuma raƙuman tantanin halitta ya fi girma, don haka zaruruwa a cikin tsarin pulping da takarda ya fi sauƙi don sha ruwa da laushi, mai dacewa da gyaran fibers, watsawa. da yin cudanya. A lokaci guda kuma, filaye masu bakin ciki suna ba da mafi kyawun sassauƙa da daidaitawa yayin ƙirƙirar takarda, yana sa takarda ta fi dacewa da hadaddun sarrafawa da aiwatarwa. Sabanin haka, zaruruwa masu girman bango-zuwa ramuka na iya haifar da wuyar wuce kima, takarda mai karyewa, wacce ba ta da amfani ga sarrafawa da amfani na gaba.
3) Abun ciki na heterocytes marasa fibrous da daure fiber
Kwayoyin da ba su da fibrous da ƙullun fiber a cikin ɓangaren litattafan almara sune abubuwa marasa kyau da ke shafar ingancin takarda. Wadannan ƙazanta ba kawai za su rage tsabta da daidaituwa na ɓangaren litattafan almara ba, amma har ma a cikin tsarin yin takarda don samar da kulli da lahani, yana tasiri mai laushi da ƙarfin takarda. Heterocytes marasa fibrous na iya samo asali daga abubuwan da ba su da fibrous irin su haushi, resin da gumis a cikin albarkatun kasa, yayin da fiber bundles ne fiber aggregates kafa a sakamakon gazawar da albarkatun kasa rabuwa da isasshen lokacin shiri tsari. Don haka, ya kamata a cire waɗannan ƙazanta kamar yadda zai yiwu yayin aikin bugun jini don inganta ingancin ɓangaren litattafan almara da yawan amfanin takarda.
Lokacin aikawa: Satumba-28-2024
