1. Cov ntaub ntawv ntim khoom
Cov ntawv ntim ntawv yog ib qho kev xaiv zoo tshaj plaws thiab ib puag ncig zoo hauv kev lag luam khoom noj. Cov ntaub ntawv ntim cov ntawv muaj xws li cov duab los qhia dawb, kraft ntawv, thiab corrugated cardboard.
Dawb cardboard, vim nws qhov huv si thiab du, feem ntau yog siv rau ntim khoom siab -kawg zaub mov xws li chocolates thiab pastries. Nws cov txiaj ntsig suav nrog kev luam ntawv zoo, tso cai rau cov qauv zoo nkauj thiab xim, thaum tseem muaj qee qhov kev nruj thiab kev tiv thaiv. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov ntawv dawb uas tuaj rau hauv kev sib cuag ncaj qha nrog cov zaub mov yuav tsum yog cov khoom noj- qib, zam ntau yam uas muaj cov tshuaj fluorescent whitening.
Kraft daim ntawv yog nyiam rau nws lub ntuj thiab rustic tsos thiab feem ntau yog siv rau ntim khob cij, txiv hmab txiv ntoo qhuav, thiab lwm yam khoom noj. Unbleached, nkauj xwb kraft ntawv yog qhov zoo tshaj plaws, tab sis nws cov luam ntawv zoo yog txwv los ntawm nws cov xim. Kraft daim ntawv muaj qhov ua tau zoo, ua rau nws tshwj xeeb tshaj yog tsim rau ntim uas yuav tsum tau muaj qee qhov kev tiv thaiv noo noo.
Cartons feem ntau yog siv rau sab nrauv ntim thiab thauj ntim khoom noj. Lawv zoo heev cushioning ua tau zoo tiv thaiv cov ntsiab lus. Thaum xaiv ib lub thawv, ua tib zoo saib seb cov khoom txheej sab hauv puas ua tau raws li cov qauv kev sib cuag zaub mov.
2. Cov khoom ntim yas
Kev ntim khoom yas ua lub luag haujlwm tseem ceeb hauv kev ntim khoom noj vim nws lub teeb yuag, tsis muaj dej, thiab tus nqi- ua tau zoo. Cov khoom siv xws li PET, PP, thiab PE.
PET (polyethylene terephthalate) muaj cov pob tshab siab thiab feem ntau siv rau hauv lub raj mis haus thiab pob tshab pastry thawv. Nws qhov txiaj ntsig yog nyob rau hauv nws cov khoom thaiv zoo heev, tiv thaiv cov pa oxygen los ntawm kev nkag mus thiab txuas ntxiv lub neej txee. PET yog recyclable, tab sis nws yuav tso tawm cov teeb meem ntawm qhov kub thiab txias, ua rau nws tsis haum rau cov zaub mov kub.
PP (polypropylene) muaj cov cua kub zoo thiab tuaj yeem siv rau hauv microwaveable ntim zaub mov. Nws yog hloov tau ntau dua li PET thiab feem ntau siv hauv cov khob yogurt thiab ntim khoom noj ceev. PP kuj muaj kev nyab xeeb, tab sis nws yuav ua nkig thiab laus nrog kev siv ntev.
PE (polyethylene) tuaj nyob rau hauv ob hom: HDPE thiab LDPE. HDPE yog ib qho nyuaj thiab siv rau lub raj mis mis, thaum LDPE yog softer thiab siv rau cling zaj duab xis. PE yog pheej yig thiab muaj kev nyab xeeb, tab sis nws cov khoom thaiv tsis zoo.
Thaum xaiv cov ntim yas, nws yog ib qho tseem ceeb kom ntseeg tau tias cov khoom ua tau raws li cov qauv kev sib cuag zaub mov thiab tsis txhob siv cov khoom siv rov ua dua lossis ntau yam uas muaj cov yas yas.
3. Cov khoom ntim khoom sib xyaw
Cov ntaub ntawv sib xyaw ua ke muab qhov zoo ntawm cov khoom sib txawv kom tau raws li cov kev xav tau ntim ntau dua. Cov piv txwv muaj xws li aluminium-plastic composites thiab ntawv-plastic composites.
Aluminium-cov khoom sib xyaw yas muaj cov khoom thaiv zoo heev, tiv thaiv lub teeb, oxygen, thiab noo noo, thiab feem ntau siv rau cov khoom noj ua kua xws li mis nyuj thiab kua txiv hmab txiv ntoo. Hom ntim no muaj lub neej ntev ntev, tab sis kev rov ua dua tshiab yog qhov nyuaj.
Daim ntawv-cov ntaub ntawv yas sib xyaw ua ke cov ntaub ntawv ib puag ncig zoo nrog cov dej tsis zoo ntawm cov yas, thiab feem ntau yog siv rau cov noodles instant tais, khob kas fes, thiab lwm yam. Thaum xaiv cov ntawv-cov ntaub ntawv yas, ua tib zoo saib seb cov txheej yas sab hauv puas tau raws li cov khoom noj- cov qauv qib thiab xyuas kom nws tsis haum rau kev siv ntev ntev -.
