Wɔ gua so no, yɛtaa hu plastic pon so nneɛma ahorow pii a wɔtow gu, a nea ɛka ho ne plastic awia aduan nnaka, ntaaboo a wɔde twitwa nneɛma, nsɔe, nnade, kyɛnsee, nkankyee, nnaka a wɔde sie a ɛyɛ foforo-bere a wɔde sie ne nnua a wɔde kankan. Wɔyɛ saa pon so nneɛma yi fi nneɛma ahorow mu, nanso wobetumi akyekyɛ mu titiriw anan: PET (polyethylene terephthalate), PE (polyethylene), PP (polypropylene) ne PS (polystyrene). Saa nneɛma yi yɛ nea asiane biara nni ho na ɛnyɛ awuduru, enni kɔla na enni hua. Sɛnea ɛbɛyɛ a ɛbɛyɛ mmerɛw sɛ wɔbɛsan de nneɛma adi dwuma bio no, wɔtaa de ahyɛnsode a wɔde yɛ nneɛma foforo a wɔde di dwuma bio no hyɛ saa plastic pon so nneɛma a wɔtow gu yi ase, na nɔma ahorow gyina hɔ ma plastic nneɛma ahorow.
PET nneɛma ne ahwɛyiye .
PET nni ɔhyew a ɛko tia, na ɛnsɛ sɛ ɔhyew a ɛsen biara a wɔde di dwuma no boro digrii 70 , enti wɔkamfo kyerɛ sɛ wɔmfa nni dwuma wɔ dan mu hyew mu. Nokwarem no, nsu a ɛwɔ nsu mu nkotoku ne anonne nkotoku a mframa bɔne wom a wɔtaa hu wɔ yɛn da biara da asetra mu no mu dodow no ara yɛ afieboa.
PE nneɛma ne ne su .
Wobetumi akyekyɛ PE nneɛma mu ayɛ no soro-Density polyethylene HDPE ne nea ɛba fam-Density polyethylene LDPE. Wɔn mu no, wɔtaa de HDPE di dwuma wɔ nneɛma a wɔde guare ne nea wɔde guare mu, na ɛnyɛ nea ɛfata sɛ wɔde kyekyere nnuan. Wɔde LDPE di dwuma de kora aduan so, ɛko tia ɔhyew yiye na nnuru no gyina hɔ pintinn, emu yɛ hare kakra, na ɛyɛ nea wotumi hu no yiye kodu baabi. Nea ɛka ho no, ɛwɔ ɔhyew a ɛko tia, awɔw a ɛko tia ne nnuru a ɛyɛ den, enti wɔtaa yɛ no aduan a wɔde kyekyere ho na ɛyɛ foforo-keeping bags.
