Cov hnab tawv nqaij yog feem ntau ua los ntawm ib qho ntawm peb cov khaubncaws sab nraud povtseg ntawm cov ntaub ntawv. Tus qauv tsim ua lub hnab ntawv yog: txheej txheej txheej yog ib qho xim ntawm polyester rau qhov cuab tam; cov txheej nruab nrab yog txhuas cov ntawv ci, siv rau kev tiv thaiv lub teeb, ntaub pov thawj, thiab pov thawj; sab hauv txheej yog polyolefin. Films (xws li cov yeeb yaj duab polypropylene) rau cov dej khis thiab cov zaub mov sib chwv.
Hauv cov ntawv ntim zaub mov, cov hnab tawv nqaij muaj ntau yam tshwj xeeb tshaj cov kaus poom ntim hlau thiab cov khoom noj khov:
1 Saib xyuas cov xim, hnov tsw, saj thiab cov khoom noj. Lub hnab ntim khoom noj ua nyias nyias thiab ua kom tau raws li qhov yuav tsum tau ua kom tsis haum hauv ib lub sijhawm luv luv. Cov xim qub, tsw ntxhiab, saj thiab cov duab ntawm cov zaub mov raug fwm ntau li ntau tau.
2 yooj yim mus use. Ua noj tau yooj yim thiab muaj kev nyab xeeb. Thaum noj mov, muab khoom noj tso rau hauv hnab thiab muab tso rau hauv dej kub li 5 nas this tig rau zaub mov, txawm tias tsis muaj cua sov.
3 yooj yim cia thiab tsheb thauj mus los. Lub hnab ntim khoom noj yog lub teeb rau hauv qhov hnyav thiab tuaj yeem teem tau thiab khaws tau. Nws occupies ib qhov chaw me me. Tom qab ntim khoom noj, nws muaj chaw seem tsawg dua hlau cov kaus poom. Nws tuaj yeem ua kom tiav ntawm qhov chaw cia thiab txuag cia thiab nqi tsheb thauj mus los.
4 Txuag lub zog. Txij thaum lub hnab ntim khoom kuj yau, lub hnab yuav tuaj yeem ncav cuag cov kab mob ua kom mob thaum lub ntsuas sov, thiab lub zog uas noj tau yog 30 mus rau 40% tsawg tshaj li ntawm cov hlau tau.
5 yog ib qho yooj yim los muag. Ua noj cov hnab ntim tau lossis ntim nrog lwm cov khoom noj raws li kev xav tau ua lag luam. Cov neeg muas zaub tuaj yeem yuav lawv dawb. Tsis tas li ntawd, vim yog kho kom zoo nkauj, qhov muag ntim tau zoo heev.
6 tseg ib lub sijhawm ntev. Cov zaub mov ntim hauv cov hnab ntim khoom noj tsis tas yuav tsum tau muab tso rau hauv tub yees los yog khov, muaj lub neej khov ruaj khov, muaj peev xwm ua rau cov hlau poom, muag yooj yim, thiab nws kuj yooj yim rau tsev siv.
7 Cov nqi tsim khoom qis dua. Cov yeeb yaj kiab uas siv los ua cov hnab tawv nqaij yuav tsis tshua kim tshaj hlau daim hlau, thiab nws cov txheej txheem thiab cov khoom siv yuav tsum yooj yim. Yog li ntawd, lub hnab ntim khoom noj yog pheej yig.
