Kraft pepala lakhala chisankho chokondedwa chifukwa champhamvu zake, kusinthasintha, komanso kuchepa kwa chilengedwe. Ndi 100% yobwezeretsanso komanso yogwirizana ndi chilengedwe, yokhala ndi mbiri yakale yopangidwa yomwe imaphatikizapo ulusi wamatabwa, madzi, mankhwala, ndi kutentha. Pepala la Kraft ndi lamphamvu komanso lamphamvu kwambiri, ndikupangitsa kuti likhale loyenera njira zapadera. Amagwiritsidwa ntchito kwambiri popakira, monga makatoni ndi zikwama zamapepala, ndipo pali mitundu yosiyanasiyana yosankhidwa malinga ndi chikhalidwe chawo komanso cholinga chake.
1.Chianindi kraft paper?
Pepala la Kraft limatanthawuza mapepala kapena mapepala opangidwa kuchokera ku zamkati zamankhwala pogwiritsa ntchito kraft papermaking process. Chifukwa cha njira ya kraft pulping, pepala la kraft lili ndi kulimba kwambiri, kukana madzi, komanso kukana misozi, ndipo mtundu wake nthawi zambiri umakhala wachikasu-bulauni.
Kraft zamkati zimakhala ndi mtundu wakuya kusiyana ndi zina zamatabwa, koma zimatha kutsukidwa kuti zipange zamkati zoyera kwambiri. Kraft zamkati zoyera bwino zimagwiritsidwa ntchito popanga mapepala apamwamba kwambiri pomwe kulimba, kuyera, komanso kukana chikasu ndikofunikira.
2. Mbiri ndi Kupanga Njira ya Kraft Paper
Pepala la Kraft, chinthu chomwe chimagwiritsidwa ntchito nthawi zambiri, chimatchedwa kuti pulping. Njira yopangira mapepala inapangidwa ndi Carl F. Dahl ku Danzig, Prussia (tsopano Gdańsk, Poland) mu 1879. Dzina lakuti kraft limachokera ku mawu achijeremani akuti "Kraft," omwe amatanthauza mphamvu kapena nyonga.
Zomwe zimapangidwira kupanga kraft zamkati ndi ulusi wamatabwa, madzi, mankhwala, ndi kutentha. Kraft zamkati amapangidwa posakaniza ulusi wa nkhuni ndi yankho la caustic soda ndi sodium sulfide ndikuphika mu digester.
Pambuyo podutsa njira zosiyanasiyana zopanga zinthu monga impregnation, kuphika, kuthirira kwa zamkati, kumenya, kukula, kuyera, kuyeretsa, kuwunikira, kupanga, kutaya madzi m'thupi ndi kukanikiza, kuyanika, kusungirako, kupukuta, ndi kupiringiza, pamodzi ndi ndondomeko yokhwima, zamkati za kraft zimasandulika kukhala. pepala la kraft.
3. Kraft Paper vs
Ena angatsutse kuti ndi pepala, ndiye chapadera ndi chiyani pa pepala la kraft?
Mwachidule, pepala la kraft ndilolimba.
Chifukwa cha kraft pulping process yomwe tatchula kale, lignin yochulukirapo imachotsedwa ku ulusi wa matabwa a kraft, ndikusiya ulusi wambiri. Izi zimapereka pepala kukana kung'ambika ndi kulimba.
Mapepala a kraft osasungunuka nthawi zambiri amakhala ndi porous kuposa pepala wamba, zomwe zingapangitse kuti pakhale zosindikiza zochepa. Komabe, porosity iyi imapangitsa kuti ikhale yoyenera kwambiri pazinthu zina zapadera, monga embossing kapena masitampu otentha.
4.Magwiritsidwe a Kraft Paper mu Packaging
Masiku ano, mapepala a kraft amagwiritsidwa ntchito makamaka m'mabokosi a malata komanso kupanga matumba a mapepala opanda zoopsa za pulasitiki, monga zomwe zimagwiritsidwa ntchito popanga simenti, chakudya, mankhwala, katundu wogula, ndi ufa.
Chifukwa cha kulimba kwake komanso kuchita bwino, mabokosi a malata opangidwa ndi mapepala a kraft ndi otchuka kwambiri pamakampani operekera zinthu komanso katundu. Mabokosiwa amateteza bwino katundu ndipo amatha kupirira zovuta zamayendedwe. Kuphatikiza apo, kukwera mtengo kwa pepala la kraft kumapangitsa kukhala chisankho choyenera pakukula kwa bizinesi.
Mabokosi amapepala a Kraft amagwiritsidwanso ntchito ndi makampani kuti akwaniritse zolinga zachitukuko, zomwe zikuwonetseratu zoyesayesa zoteteza chilengedwe kudzera mu mawonekedwe owoneka bwino a pepala la brown kraft. Pepala la Kraft lili ndi ntchito zambiri ndipo limatha kupereka zosiyanasiyanama CD mwanzerumayankho pamakampani azonyamula masiku ano.
5. Mitundu ya Kraft Paper
Pepala la Kraft nthawi zambiri limakhalabe ndi utoto wofiirira wachikasu, zomwe zimapangitsa kuti zikhale zoyenera kupanga matumba ndi mapepala okulunga. Pali mitundu yosiyanasiyana ya mapepala a kraft kutengera zomwe ali nazo komanso ntchito zake. Kraft pepala ndi mawu wamba pamapepala ndipo alibe miyezo yeniyeni. Nthawi zambiri amagawidwa molingana ndi katundu wake komanso momwe amagwiritsidwira ntchito.
Mwa mtundu, mapepala a kraft amatha kugawidwa mu pepala lachilengedwe la kraft, pepala lofiira la kraft, pepala loyera la kraft, pepala la matte kraft, pepala lokhala ndi mbali imodzi, mapepala amtundu wapawiri, ndi ena.
Kutengera momwe amagwiritsidwira ntchito, pepala la kraft litha kugawidwa m'mapaketi oyika ma kraft, pepala lopanda madzi, pepala lokhala ndi dzimbiri, pepala lotsimikizira dzimbiri, pepala lopangidwa ndi kraft, insulating kraft paperboard, zomata za kraft, ndi zina zambiri.
Malinga ndi kapangidwe kake, pepala la kraft litha kugawidwanso kukhala mapepala obwezerezedwanso a kraft, pepala la kraft core, kraft base paper, kraft wax paper, wood zamkati kraft paper, composite kraft paper, ndi ena.
Mitundu Yodziwika ya Kraft Paper
1. Lokutidwa Papepala Lopanda Bleached Kraft (CUK)
Izi zimatengedwa kuti ndizofunika kwambiri pamapepala a kraft. Sichikhala ndi "bleaching" kapena zina zowonjezera mankhwala, kupatulapo mankhwala omwe amagwiritsidwa ntchito pa kraft pulping process. Zotsatira zake, imadziwikanso kuti kraft yolimba yosakanizika kapena sulfite, yokhala ndi 80% ya namwali fiber wood zamkati/ma cellulose kraft zamkati. Imawonetsa kukana kwamisozi komanso kuuma kwakukulu popanda kukhuthala kwambiri. M'malo mwake, ndiye woonda kwambiri pazitsulo zonse zamapepala a kraft.
2. Solid Bleached Kraft Paper (SBS)
Ngakhale mapepala a kraft osasungunuka amaonedwa kuti ndi ochezeka kwambiri chifukwa cha mtundu wake wachilengedwe komanso kusowa kwa mankhwala opangira mankhwala, sizingakhale zabwino nthawi zonse pazinthu zina, monga kulongedza zinthu zapamwamba kapena zapamwamba. Pazifukwa izi, pepala la kraft la bleached likhoza kukondedwa chifukwa limakhala ndi mawonekedwe osalala komanso owoneka bwino, omwe amatha kupititsa patsogolo khalidwe losindikiza ndikupereka mawonekedwe apamwamba kwambiri.
3. Coated Recycled Board (CRB)
Bolodi yokonzedwanso imapangidwa ndi pepala la kraft 100%. Chifukwa sichimapangidwa kuchokera ku ulusi wa namwali, mawonekedwe ake ndi kulolerana kwake ndizochepa poyerekeza ndi mapepala olimba opangidwa ndi bleached kraft. Komabe, mapepala a kraft obwezerezedwanso ndi gawo laling'ono lopangira zinthu zotsika mtengo, zomwe zimapangitsa kuti likhale loyenera kugwiritsa ntchito zomwe sizifunikira kukana misozi kapena mphamvu, monga mabokosi a phala. Kwa mabokosi a malata, mitundu yambiri imatha kupezeka powonjezera zigawo za mapepala a kraft.
Nthawi yotumiza: Apr-06-2024
