Matumba a kraft amanyamula mapepala opangidwa ndi pepala lonse lamatabwa. Kotero mtunduwo umagawidwa kukhala pepala loyera la kraft ndi chikasu pa pepala la kraft.

PP filimu angagwiritsidwe ntchito pa pepala kuteteza ku madzi. Kuphatikizana, kusindikiza ndi kupanga thumba. Njira zotsegulira ndi kumbuyo zimagawidwa kukhala kusindikiza kutentha, kukulunga pamapepala ndi edging.

Ponena za thumba loyamba logulira mapepala a kraft, linabadwa mu 1908 ku St. Paul, Minnesota, USA. Mwiniwake wina wa golosale wa m’deralo, Wald Duvena, wayamba kufunafuna njira zololeza ogula kugula zambiri nthawi imodzi kuti akweze malonda. Duvina amakhulupirira kuti iyenera kukhala thumba lopangidwa kale lomwe ndi lotsika mtengo komanso losavuta kugwiritsa ntchito, ndipo limatha kunyamula pafupifupi mapaundi 75.

Pambuyo zoyeserera mobwerezabwereza, iye anatseka kapangidwe ka thumba pa kraft pepala chifukwa anapangidwa kuchokera conifers ndi ulusi wautali matabwa, ndipo ankachitira ndi milder caustic koloko ndi alkali sulfide mankhwala pa kuphika ndondomeko, kupanga The original mphamvu ya nkhuni CHIKWANGWANI ndi zochepa kuonongeka, kotero pepala lomaliza opangidwa ndi zolimba kugwirizana ndi CHIKWANGWANI, ndipo pepala ndi olimba ndipo akhoza kupirira kusweka lalikulu ndi kukanikiza popanda kusweka kolimba.

Zaka zinayi pambuyo pake, thumba loyamba la kraft logulira linabadwa. Pansi pake ndi amakona anayi ndipo ali ndi voliyumu yokulirapo kuposa matumba apepala a V-pansi. Chingwe chimadutsa pansi ndi m'mbali mwake kuti chiwonjezere mphamvu yake yonyamula katundu, ndipo malupu awiri amapangidwa kumapeto kwa thumba la pepala kuti anyamule mosavuta. Duvena adatcha chikwama choguliracho m'dzina lake ndipo adachipatsa patent mu 1915. Panthawiyi, kuchuluka kwa malonda a pachaka a matumba ogulira otere kudaposa 100 miliyoni.

Guangdong Chuangxin atanyamula Gulu ndi kutsogolo kwa katundu ndi kulongedza makampani apamwamba chatekinoloje mabizinezi kafukufuku ndi chitukuko, kupanga, malonda .Pali zizindikiro mtundu monga Yinuo,zhonglan, Huanyuan,Tronson,Crratrusrtndi ma patent opitilira 30 opangidwa. Chiyambireni kukhazikitsidwa kwake mu 2008, ntchito yamakampani ndi "kupangitsa kuti dziko lapansi likhale lokonda zachilengedwe komanso laubwenzi" ndikudzipereka kukhala mtsogoleri wapadziko lonse pantchito zoteteza zachilengedwe - mabizinesi apamwamba 500 padziko lonse lapansi.