Thaum nws los txog rau kev ntim cov dej haus, yas yog ib qho kev xaiv khoom vim nws lub teeb yuag, durability, thiab nqi-zoo. Muaj ntau ntau hom yas siv hauv kev tsim cov raj mis thiab ntim, txhua tus muaj nws tus kheej cov khoom thiab kev siv.
Hom yas siv ntau tshaj plaws hauv cov ntim dej haus yog polyethylene terephthalate (PET). PET yog cov yas muaj zog, hnav, thiab pob tshab uas muab cov khoom thaiv zoo heev, ua rau nws tsim nyog rau khaws cia cov dej haus carbonated thiab tsis yog carbonated. Nws kuj yog ib qho yooj yim rau rov siv dua thiab tuaj yeem rov ua dua tshiab tsis tas yuav poob nws cov khoom. PET lub raj mis feem ntau ntsia hlau los yog muaj lub caj dab nqaim uas ua rau lawv yooj yim qhib thiab kaw.
Lwm hom yas siv hauv ntim dej haus yog polypropylene (PP). PP yog cov yas ruaj khov nrog cov cua sov zoo, ua rau nws haum rau cov dej kub xws li kua txiv hmab txiv ntoo, tshuaj yej, thiab kua zaub. Nws kuj muaj cov khoom thaiv zoo thiab yooj yim los ntxuav. PP lub raj mis feem ntau dav-qhov ncauj thiab yooj yim sau thiab huv dua li lub raj mis PET.
Polyethylene (PE) yog lwm cov yas siv dav hauv ntim dej haus, tshwj xeeb tshaj yog rau cov dej haus uas tsis yog carbonated thiab cov khoom siv mis nyuj. PE yog cov yas softer dua PET lossis PP thiab tsis muaj zog lossis pob tshab, tab sis nws pheej yig thiab yooj yim rau kev ua. PE hnab kuj tseem siv los khaws cov kua xws li mis nyuj thiab kua txiv hmab txiv ntoo.
Ntxiv rau PET, PP, thiab PE, lwm hom yas xws li polystyrene (PS) thiab polyvinyl chloride (PVC) qee zaum siv hauv ntim dej haus. PS feem ntau yog siv los tsim cov ntim khoom nruj thiab lub teeb, thaum PVC feem ntau yog siv rau cov ntawv ntim qhwv lossis lwm hom ntim khoom yooj yim.
Kev xaiv ntawm cov yas ntim dej haus yog nyob ntawm ntau yam xws li lub neej txee lub neej ntawm cov khoom, hom dej haus ( carbonated lossis non-carbonated), txoj kev sau, thiab qhov xav tau ntawm lub raj mis lossis lub thawv. Raws li cov neeg siv khoom paub ntau ntxiv txog qhov cuam tshuam ntawm ib puag ncig ntawm cov khoom ntim, kev siv cov yas yas thiab rov ua dua tshiab tau dhau los ua qhov tseem ceeb hauv kev lag luam dej haus.
Polyethylene terephthalate (PET) yog hom yas siv ntau tshaj plaws hauv kev ntim dej haus vim nws cov kav ntev, pob tshab, thiab cov khoom thaiv. Txawm li cas los xij, lwm hom yas xws li polypropylene (PP) thiab polyethylene (PE) kuj tau siv dav nyob ntawm daim ntawv thov tshwj xeeb. Raws li kev ruaj ntseg tseem ceeb dua, kev lag luam dej haus tau tshawb nrhiav cov ntaub ntawv tshiab thiab thev naus laus zis uas txhawb nqa rov ua dua tshiab thaum tswj hwm cov qauv kev ua haujlwm.
