Cov ntawv ntim khoom suav nrog cov ntawv kraft, daim ntawv nqaij qaib, ntawv hnab ntawv, ntawv parchment, cellophane, tar ntawv, ntawv pov thawj noo noo, phom ntim ntawv, ntawv ntim cov ntawv tsis zoo, daim ntawv translucent, ntawv tiv thaiv xeb, ntawv roj pov thawj, ntim khoom noj ntawv, paraffin ntawv, tshuaj yej hnab ntawv, liab teeb phom ntawv, nqus aluminized ntawv, composite ntawv, thiab lwm yam.
Daim ntawv siv rau ntim ntau yam khoom siv. Feem ntau, nws muaj lub cev muaj zog thiab qee yam dej tsis kam. Raws li cov yam ntxwv ntawm cov khoom lag luam, ntawm cov ntaub ntawv ntim nrog cov khoom tshwj xeeb, cov ntawv ntim ntau tshaj plaws yog cov ntawv ntim cov ntawv siv rau ntim cov hmoov nplej thiab cov khoom siv ua liaj ua teb, xws li cov cement, chiv, thiab lwm yam., uas yog feem ntau. ua los ntawm ntau tshaj 3 mus rau 4 txheej ntawm daim ntawv, yog li nws tseem hu ua ntau txheej ntawv hnab ntawv, kom paub qhov txawv ntawm lwm lub hnab ntawv siv rau ntim lub teeb thiab cov khoom zoo. Hom ntawv ntim no tsuas yog xav tau lub zog siab, hnyav hnyav, cuam tshuam tsis kam, thiab huab cua permeability. Cov ntawv ntim zaub mov muaj ntau yam thiab specifications. Nws kuj tau muab faib ua ob pawg: ntim sab hauv thiab ntim sab nraud. Daim ntawv ntim sab hauv uas ncaj qha rau cov khoom noj yog hu ua inner packing paper. Nws yog tsuas yog yuav tsum tau ua kom huv si, tsis muaj kab mob, thiab muaj cov yam ntxwv ntawm noo noo-pov thawj, roj-pov thawj, anti-sticking thiab mildew-proof. Cov ntawv ntim sab nrauv yog siv los ua kom zoo nkauj thiab tiv thaiv cov khoom. Ntxiv nrog rau qee lub zog lub cev, nws kuj yuav tsum tau ua kom huv thiab zoo nkauj, haum rau kev luam tawm cov khoom siv ntau xim thiab cov cim. Daim ntawv ntim rau cov dej haus xws li mis nyuj thiab zaub kua txiv yuav tsum yog impermeable. Txhawm rau ua kom tau raws li qhov xav tau ntawm kev khaws cia thiab khaws cia ntev ntev, cov ntawv ntim tshwj xeeb rau cov dej haus (saib cov thawv ntim khoom noj) nrog cov ntawv thiab hlau zaj duab xis sib xyaw, ntawv thiab yas thiab hlau zaj duab xis sib xyaw tau tsim. Txhawm rau kom ua tau raws li qhov xav tau los tiv thaiv xeb ntawm cov cuab yeej hlau thiab cov cuab yeej, cov ntawv tiv thaiv xeb tau tsim. Feem ntau ntawm cov duab los qhia kuj yog siv rau cov khoom ntim khoom, feem ntau yog siv rau kev tsim cov thawv ntawv, cov thawv ntawv thiab cov hnab ntim khoom.
qhwv ntawv; ntim ntawv
Ib lo lus dav dav rau ib hom ntawv siv rau kev ntim khoom. Nws tuaj yeem muab faib ua cov ntawv ntim zoo tib yam, cov ntawv ntim tshwj xeeb, cov ntawv cim lag luam, cov ntawv ntim roj pov thawj thiab cov ntawv ntim cov ntawv pov thawj. Nws feem ntau muaj lub zog siab thiab toughness. Txhua hom ntawv ntim ntawv muaj cov khoom sib txawv thiab siv. Piv txwv li, daim ntawv ntim cov txiv hmab txiv ntoo tshwj xeeb yog nyias thiab mos. Photosensitive tiv thaiv daim ntawv yog opaque. Cov ntawv ntim roj pov thawj (cog parchment ntawv, thiab lwm yam) muaj cov cuab yeej los tiv thaiv cov roj nkag. Cov ntawv ntim cov ntawv pov thawj (asphalt ntawv, ntawv roj, ntawv txhuas ntawv ci, thiab lwm yam) yog cov ntaub ntawv pov thawj noo noo. Daim ntawv cim lag luam yog siv rau ntim tom qab luam ntawv. Cov ntawv ntim khoom siv feem ntau yog siv rau kev ntim khoom, thiab cov kev cai zoo tsis nruj.
Nws tuaj yeem muab faib ua: cov ntawv ntim khoom zoo tib yam, cov ntawv ntim tshwj xeeb, cov ntawv ntim khoom lag luam, ntawv pov thawj roj, ntawv pov thawj noo noo, thiab lwm yam. raws li kraft ntawv, nqaij qaib daim ntawv, thiab lwm yam. Cov ntawv ntim tshwj xeeb muaj npe raws li nws lub hom phiaj, thiab nws cov khoom kuj txawv, xws li cov ntawv ntim cov txiv hmab txiv ntoo yog nyias thiab mos, cov ntawv tiv thaiv photosensitive yog dub thiab opaque, thiab cement hnab ntawv yog tawv thiab tsis yooj yim rau tawg. Kev lag luam wrapping ntawv yog siv rau ntim tom qab luam ntawv, xws li khoom qab zib wrapping ntawv. Cov ntawv pov thawj roj muaj qhov ua tau zoo ntawm kev tiv thaiv cov roj nkag, xws li zaub parchment, butter ntawv, thiab lwm yam. Cov ntawv pov thawj noo noo muaj cov khoom pov thawj, xws li tar paper, oil paper, aluminium foil paper, thiab lwm yam.
