Plastics tau dav siv nyob rau hauv ntau lub teb vim lawv qhov zoo xws li lub teeb yuag, siab zog, ruaj khov khoom, thiab pheej yig. Kev lag luam yas tau txhim kho sai, tab sis tsis muaj txoj hauv kev kho kom zoo rau cov yas siv, uas ua rau muaj kev puas tsuaj loj rau lub ntuj tsim vim yog cov yas pov tseg. Cov yas tsis degradable feem ntau yog tsim los ntawm low-density polyethylene (LDPE) thiab linear low-density polyethylene (LLDPE), tom qab los ntawm high-density polyethylene (HDPE), polypropylene (PP), polystyrene (PS), thiab polyvinyl chloride (PVC) . Thiab cov plastics no feem ntau thaum kawg muab pov tseg raws li cov khoom pov tseg, ua rau tsim cov pa phem xws li cov kua qaub los nag hauv huab cua, uas ua rau muaj kev hem thawj rau peb lub neej.
Yog li ntawd, nws yuav tsum tsis txhob kawm txog cov peev txheej ntawm cov yas degradable! Kev pov tseg cov khoom pov tseg xws li yas tuaj yeem ua paug rau ib puag ncig, kev faus tob tuaj yeem nkag mus rau hauv av, thiab kev kub nyhiab tuaj yeem ua paug huab cua. Cov no tsis yog cov ntsiab lus daws teeb meem. Txoj hauv kev los daws qhov teeb meem yog los tsim cov yas degradable los hloov cov yas tsis degradable.
