Cov Ntsiab Lus Tseem Ceeb ntawm Cov Khoom Noj Khoom Noj Khoom Haus Yas Tsob Ntoo:
Polyethylene (PE): Cov nyiaj ntau dua 70% ntawm ib zaug - siv hnab khoom noj (Source: Plastics Europe 2021 tsab ntawv ceeb toom).
Cov yam ntxwv: Lub teeb yuag, tsis muaj dej, tsis muaj nqi, tab sis tsis yog - biodegradable.
Sub- hom:
Tsawg-qhov ntom ntom polyethylene (LDPE): Feem ntau yog siv rau kev ntim khoom yooj yim, xws li lub hnab khob cij.
High-density polyethylene (HDPE): Kev nruj dua, siv rau lub khob dej haus, thiab lwm yam.
Polypropylene (PP): Tus nqi kwv yees li 15% -20%.
Qhov zoo: Kub kub tsis kam (siab tshaj 120 degree), haum rau microwaveable zaub mov ntim.
Qhov tsis zoo: Kev rov ua dua tshiab tsawg dua 30% (raws li UN Environment Program 2020 cov ntaub ntawv).
Qhov nce thiab qhov nyuaj ntawm Biodegradable Materials
Polylactic acid (PLA):
Source: Fermentation ntawm cov nroj tsuag xws li pob kws starch; carbon emissions yog 60% qis dua PE (Nature journal 2022 txoj kev tshawb fawb).
Kev txwv: Yuav tsum muaj kev ua liaj ua teb ua liaj ua teb; qeeb degradation tus nqi nyob rau hauv ib puag ncig ntuj.
PBAT / PBS Composite Khoom:
Feem ntau: PBAT (40% -60%) + Starch (20% -30%) (Tuam Tshoj National Light Industry Council Standard).
Qhov teeb meem: Qee cov khoom khaws cov microplastics tom qab degradation.
Kev cuam tshuam ntawm Kev Muaj Peev Xwm ntawm Kev Nyab Xeeb Khoom Noj
PE/PP: Stable at room temperature, but may release plasticizers (such as phthalates) at high temperatures (>80 degree).
Cov Khoom Siv Degradable: PLA txoj kev nyab xeeb kev tsiv teb tsaws chaw tau lees paub los ntawm EU EFSA, tab sis cov khoom ntxiv hauv PBAT yuav tsum tau kuaj xyuas ntxiv.
Environmentally Friendly Alternatives thiab yav tom ntej Trends
Daim ntawv-raws li Composite Bags: Muaj PE txheej txheej (kwv yees li 5%-10%), yuav tsum tau sib cais rau kev rov ua dua tshiab.
Seaweed Extract: Kev sim theem, tus nqi yog 3 npaug ntawm PLA (MIT txoj kev tshawb fawb, 2023).
