Hauv cov txheej txheem cowhide, kom ntseeg tau tias qhov zoo thiab kev siv tus nqi ntawm cowhide, yuav tsum tau ceev faj hauv qab no:
1. Txoj kev Peeling:
Thaum tev cowhide, nws yuav tsum tau txiav nyob rau hauv ib txoj kab ncaj nraim los ntawm rab rawg ntawm lub taub hau mus rau lub hauv paus ntawm tus Tsov tus tw, thiab cov ceg yuav tsum tau txiav nyob rau hauv ib txoj kab ncaj nraim kom tsis txhob muaj teeb meem xws li khawb, riam raug mob, qhov, claws, thiab crotch leakage.
Hniav daim duab: Ua ib qho kev txiav ntawm daim tawv nqaij, tab sis qhov tob ntawm lub qhov txhab tsis tshaj ib nrab ntawm daim tawv nqaij tuab.
Riam txhab: Ib qhov txhab uas tsis muaj qhov nkag yog hu ua riam qhov txhab.
Qhov: Ib qho hlais ntawm daim tawv nqaij yog hu ua lub qhov. Raws li cov kev cai ntawm kev yuav, thawj-chav tawv tawv tuaj yeem nqa qhov siab tshaj plaws ntawm 2 rab riam, nrog thaj tsam tsis tshaj 50 square centimeters, lossis tsuas yog nqa tau ib lub qhov.
Rov qab Claw: Txiav daim tawv nqaij ntawm caj dab diagonally.
Leakage crotch: Cov tawv nqaij ntawm lub pob tw yog txiav rau lub duav.
2. Kev kho kom qhuav:
Tom qab tshem tawm cov cowhide, nws yuav tsum tau txiav tawm hooves, pob ntseg, di ncauj, thiab tails, tshem tawm cov seem ntawm cov nqaij thiab roj ntawm daim tawv nqaij, ntxuav thiab tshem tawm cov sludge, quav, thiab ntshav stains ntawm daim tawv nqaij.
Nyob rau hnub tshav ntuj, lub cowhide yuav tsum tau ncab thiab kis mus rau hauv av tiaj tus kom qhuav, nrog cov plaub saum npoo ntawm downwards thiab cov plaub board tig upwards. Thaum lub hnub nce mus txog 8000, tig nws los ua kom qhuav cov ntaub plaub. Thaum yuav luag tag nrho cov cowhide qhuav, nws yuav tsum tau muab tais rau sab hauv thiab muab tso rau hauv qhov chaw txias thiab qhov cua.
Nyob rau hauv cov ntaub ntawv ntawm nag, lub cowhide yuav tsum tau muab tso rau ntawm ib tug xyoob ncej thiab qhuav nyob rau hauv ib tug zoo ventilated thiab sheltered qhov chaw. Txawm li cas los xij, nws yuav tsum tsis txhob roasted los yog coated nrog tshauv kom tsis txhob txo qhov zoo ntawm cowhide.
3. Kev kho corrosion:
Cov tawv nqaij tev tawm los ntawm slaughtered nyuj feem ntau tsis tuaj yeem xa ncaj qha mus rau tanneries rau kev ua, yog li yuav tsum tau kho kev tiv thaiv corrosion.
Kev kho kom qhuav tuaj yeem siv tau, uas suav nrog kev sib npaug ntawm cov ntsev ntawm cov tawv nqaij ntxuav thiab ntws tawm, kho rau 7 hnub, thiab siv 20% ntawm daim tawv nqaij hnyav li ntsev.
Lwm txoj kev yog txoj kev xaiv dej ntsev, uas suav nrog cov tawv nqaij nyoos hauv dej ntsev nrog cov ntsev ntsev ntawm 22% ntawm cov dej. Tom qab 10 teev, nws raug tshem tawm thiab sprinkled nrog 20% ntsev ntsev ntawm daim tawv nqaij.
