Qhov no nyob ntawm cov khoom tshwj xeeb ntawm lub khob yas. Feem ntau ntawm cov hnab yas noj su / khob yas siv hauv kev noj zaub mov dav dav tuaj yeem rov ua dua.
Cov khoom siv yas rov ua dua tshiab No. 1-7 yog tsim los ntawm cov koom haum cuam tshuam hauv kev lag luam yas hauv Tebchaws Meskas.
Tsis yog 1
PET (polyethylene terephthalate), lub thawv ua los ntawm cov khoom no yog ib lub raj mis yas rau cov dej qab zib, uas feem ntau hu ua "poly lub raj mis".
Cov dej ntxhia hauv cov fwj dej, cov fwj dej carbonated, thiab lwm yam. Thaum tshav kub kub-resistant mus rau 70 degree, nws yog ib qho yooj yim deform, thiab qee yam khoom tsis zoo yuav yaj tawm. Tsis txhob muab tso rau hauv lub tsheb kom bask nyob rau hauv lub hnub; tsis txhob khaws cawv, roj, thiab lwm yam.
No. 2
HDPE (high-density polyethylene), ntim rau cov tshuaj ntxuav tes, tshuaj zawv plaub hau, da dej gels, edible oils, tshuaj tua kab, thiab lwm yam. feem ntau yog ua los ntawm HDPE. Cov ntim khoom feem ntau yog semi-opaque thiab zoo li siv quav ciab.
Hom tshuaj dawb lub raj mis, cov khoom siv tu, thiab cov khoom siv da dej. Tsis txhob siv nws ua lub khob dej lossis ua lub thawv rau lwm yam khoom. Yog tias kev ntxuav tsis huv, tsis txhob rov ua dua.
No. 3
PVC (polyvinyl chloride) feem ntau yog siv los ua cov kav dej, lub tsho tiv nag, lub hnab tsev kawm ntawv, cov khoom siv hauv tsev, cov yeeb yaj kiab yas, cov thawv yas thiab lwm yam khoom siv.
Hom raincoats, cov khoom siv hauv tsev, cov yeeb yaj kiab yas, cov thawv yas, thiab lwm yam. Nws muaj cov yas zoo heev thiab tus nqi qis, yog li nws yog dav siv. Nws tsuas tuaj yeem kub txog 81 degree. Nws yog ib qho yooj yim los tsim cov khoom tsis zoo ntawm qhov kub thiab txias, thiab nws yog qhov nyuaj rau kev ntxuav thiab yooj yim kom nyob twj ywm. Tsis txhob rov siv dua.
No. 4
LDPE (tsawg-density polyethylene), hnab yas uas tuaj yeem pom txhua qhov chaw feem ntau yog ua los ntawm LDPE.
Feem ntau cling zaj duab xis, yas zaj duab xis, thiab lwm yam. Cov khoom tsis zoo yog tsim los ntawm qhov kub thiab txias, thiab cov tshuaj lom neeg nkag mus rau tib neeg lub cev nrog cov zaub mov, uas yuav ua rau muaj kab mob xws li mob qog noj ntshav mis thiab yug me nyuam tsis zoo. Tsis txhob muab cov yas qhwv rau hauv lub qhov cub microwave.
No. 5
PP (polypropylene) feem ntau yog siv los ua cov thoob dej, cov thoob khib nyiab, pob tawb, pob tawb thiab cov thawv ntim khoom noj rau lub qhov cub microwave.
(Cov fwj kua mis ntau, yogurt fwj, kua txiv hmab txiv ntoo fwj, microwave noj su lub thawv. Nws tuaj yeem tiv taus qhov kub siab txog 130 degree. Nws yog tib lub thawv yas uas tuaj yeem muab tso rau hauv qhov cub microwave. Nws tuaj yeem rov siv tau tom qab ntxuav tu. Nco ntsoov tias qee qhov microwave ncu Lub thawv noj su, lub thawv lub cev yog ua los ntawm No. 5 PP, tab sis lub hau yog ua los ntawm No. 4 PE. Vim tias PE tsis tuaj yeem tiv taus qhov kub siab, nws tsis tuaj yeem muab tso rau hauv microwave ua ke nrog lub thawv. )
No. 6
PS (polystyrene), vim nws qhov nqus dej tsawg, feem ntau yog siv los ua cov khoom siv hauv tsev, cov khoom ua si, cov ntawv sau, cov menyuam, nrog rau cov thawv khob lossis cov tais diav pov tseg rau cov dej haus hauv cov khw muag khoom noj ceev.
(Cov tais ntim cov thawv ntim khoom noj thiab cov thawv ntim khoom noj ceev. Tsis txhob muab tso rau hauv lub qhov cub microwave kom tsis txhob tso cov tshuaj vim qhov kub thiab txias. Tom qab thauj cov kua qaub (xws li kua txiv kab ntxwv) thiab cov tshuaj alkaline, cov carcinogens yuav decomposed. Ceev ceev Cov zaub mov ntim cov zaub mov kub hauv lub thawv. Tsis txhob siv lub microwave los ua cov noodles hauv ib lub tais.)
No. 7
lwm yam. (Cov PCs feem ntau, xws li lub raj mis dej, qhov chaw khob, thiab lub raj mis me me. Cov khw muag khoom feem ntau siv khob dej ua los ntawm cov khoom siv no. PA, uas yog, nylon, feem ntau yog siv hauv textiles thiab qee yam khoom siv hauv tsev thiab lwm yam khoom. PC yog ib qho yooj yim. Cov tshuaj bisphenol A yog tsim los rau tib neeg lub cev, tsis txhob ua kom sov thaum siv nws, thiab tsis txhob raug tshav ntuj ncaj qha.)