Cov yam ntxwv tseem ceeb ntawm polyethylene terephthalate (PET)
Cov yas feem ntau siv hauv cov txheej txheem ntawm lub thawv yas tiaj tus yog cov khoom siv PET, lub npe tshawb fawb yog polyethylene terephthalate. PET ntshiab puag ncig lub thawv yas thiab lub hau tau tsim nyob rau xyoo 1940 thiab siv hauv kev lag luam textile. Nyob rau xyoo 1970, nws tau siv los hloov cov iav fwj ua cov ntim dej haus carbonated, uas tau pib siv PET ua cov khoom ntim lub raj mis uas tsim nyog tshaj plaws, thiab nrog kev txhim kho sai, txog tam sim no, cov khoom ntim PET tseem loj hlob sai txhua xyoo. .
PET dub yas ntim nrog lub hau lub raj mis raws li ntim, piv nrog cov tsoos iav raj mis thiab lwm yam PE thiab PP fwj, PET zawv plaub hau lub raj mis loj muaj cov nram qab no zoo thiab nta:
1. Muab piv nrog cov iav fwj, PET yog sib zog dua iav, thiab nws qhov ceev tsuas yog 30-40 feem pua ntawm iav. Ntxiv rau qhov sib txawv ntawm lub zog thiab cov txheej txheem molding, yog tias qhov yuav tsum tau ua tiav, lub raj mis PET tsuas yog xav tau 10 feem pua ntawm qhov hnyav ntawm lub raj mis.
2. Muaj kev cuam tshuam lub zog, ua tau raws li qhov yuav tsum tau ua ntawm cov khoom siv dav dav rau kev poob.
3. Zoo pob tshab thiab nto gloss, piv rau iav fwj, uas kuj yog ib qho nrov feature ntawm PET fwj. High transparency thiab nto gloss, muab qhov zoo nkauj thiab huv si.
4. Nws muaj cov khoom siv roj hmab siab, thiab nws cov khoom tiv thaiv rau huab cua, oxygen, thiab carbon dioxide yog qhov siab tshaj plaws ntawm txhua yam khoom siv. Nws tuaj yeem ua tau raws li qhov xav tau ntawm cov khoom siv nrog ntau dua airtightness.
5. Muaj tshuaj lom neeg ruaj khov thiab kev nyab xeeb.
6. Cov khoom siv tus nqi qis dua.
7. Kev kub siab ua haujlwm tsis zoo. Ordinary txhaj tshuaj stretch tshuab PET fwj yog yooj yim rau shrink thiab deform thaum rhuab, thiab tsis haum rau high-temperature txheem. Rau cov khoom uas yuav tsum tau kub filling, nws yog ib qhov tsim nyog los xaiv cov hom phiaj cov khoom qib thiab cov txheej txheem ntau lawm kom ua tau raws li qhov yuav tsum tau ua.
8. Cov dej tsis kam yog me ntsis tsis zoo, tsis zoo li PE thiab PP cov ntaub ntawv, tab sis zoo dua li PC, PS, thiab lwm yam ntaub ntawv, thiab tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm cov khoom siv feem ntau, tab sis cov khoom uas muaj cov kev cai tshwj xeeb rau cov dej tsis kam yuav tsum tau soj ntsuam.
