Pla (polylactic acid) yog ib cov khoom siv biodegradable thiab cov khoom siv hluav taws xob tau muab los ntawm cov khoom siv txuas tau yooj yim xws li cov hmoov av starch, suab thaj, lossis lwm qhov chaw cog qoob loo. PLA tau txiav txim siab muaj kev nyab xeeb rau siv nyob rau hauv ntau yam kev siv, suav nrog ntim zaub mov ntim khoom thiab tais diav. Txawm li cas los xij, nws yog ib qho tseem ceeb kom nco ntsoov tias pla nws tus kheej tsis yog qhov kev noj zaub mov lossis khoom noj. Nws yog feem ntau siv raws li cov khoom siv rau ntim thiab cov khoom siv pov tseg.
Thaum twg cov PLA siv hauv cov hnab tshuaj yej lub hnab, nws tsis yog xav tau noj. Lub pla cov hnab ntim tshuaj yej ua lub thawv rau cov tshuaj yej nplooj, tso cai rau lawv mus rau hauv dej kub. Thaum cov tshuaj yej tau npaj, cov pob kws fiber fiber lub hnab ntim ib txwm muab pov tseg.
Los ntawm kev saib xyuas kev noj qab haus huv, cov khoom siv feem ntau suav tias yog kev nyab xeeb thiab tsis - toxic. Nws tsis tso tshuaj rau cov phom sij thaum siv raws li npaj siab. Txawm li cas los xij, yog tias PLA yuav tsum tau noj nyob rau hauv ntau cov teeb meem loj, nws tuaj yeem ua rau cov teeb meem digitalities zoo ib yam li haus cov khoom noj uas tsis yog - Hnab Ntim, koj yuav tsis cia nws tshwm sim
Yog tias koj muaj kev txhawj xeeb txog kev nyab xeeb ntawm PLA lossis ib qho khoom tshwj xeeb, nws yog ib qho kev pom zoo lossis kev tswj hwm kev noj qab haus huv lossis cov tub txawg.

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