Pounamu PET hopi horoi

2026-01-30

Ina tangohia e tātou tētahi pounamu hopi horoi makawe e whakamahia whānuitia ana, ka kitea he tapanga PET i raro i te pounamu, e tohu ana he pounamu PET tēnei hua. Ko ngā pounamu PET e whakamahia ana i te nuinga o te wā i roto i te umanga tiaki whaiaro, ā, he nui te kaha o te nuinga. Ko ngā pounamu PET he ipu kirihou i whiwhihia mā te tukatuka i ngā rauemi kirihou PET mā roto i ngā tikanga kotahi-taahiraa, e rua-taahiraa rānei. Ko ngā āhuatanga o te kirihou PET he māmā, he tino mārama, ā, he ātete ki te pānga me te pakaru.

Ko te PET, ko te polyethylene terephthalate rānei, e mōhiotia ana ko te polyester. Ko tōna ingoa Pākehā ko Polyethylene Terephthalate, ka puta mai i te tauhohenga polymerization (condensation) o ngā rauemi mata matū e rua: te waikawa terephthalic (PTA) me te ethylene glycol (EG). Ko ngā preforms he mea werowero. Hei hua haurua-oti mō te totoro biaxial me te pupuhi, ka hangaia te kaki o te preform i te wā werowero, ā, kāore tōna rahi e rerekē i te wā whakamahana me te totoro/pupuhi. Ko te rahi, te taumaha, me te matotoru o te pakitara o te preform he mea me aro nui ki te tukanga pupuhi o te pounamu.

I te wā e whakarite ana i ngā pounamu pupuhi-whakarewa, ka werohia tuatahitia ngā maramara PET ki roto i te preform. Me kaua e nui rawa te ōwehenga o ngā rauemi hangarua (iti iho i te 5%), ā, kaua e neke atu i te rua ngā wā hangarua. Kaua e iti rawa te taumaha ngota me te matotoru (taumaha ngota 31,000 - 50,000, matotoru ā-roto 0.78 - 0.85 cm³/g). E ai ki te Ture Haumaru Kai ā-Motu, kāore e whakaaetia te whakamahi i ngā rauemi hangarua mō ngā takai kai me ngā rongoā. Me penapena ngā preform i werohia-whakarewa mō te neke atu i te 24 hāora i mua i te whakamahinga. Me penapena ngā preform kāore i whakamahia i muri i te whakamahana mō te neke atu i te 48 hāora i mua i te whakamahana anō. Kaua e neke atu i te ono marama te roa o te rokiroki o ngā pounamu. Ko te kounga o te preform e whakawhirinaki ana ki te kounga o te rauemi PET, nō reira me whiriwhiri ngā rauemi e ngāwari ana ki te pupuhi me te hanga, me te whakawhanake i tētahi tukanga hanga preform e tika ana. E whakaatu ana ngā whakamātautau he māmā ake te pupuhi i ngā pokepokea ai i hangaia mai i ngā rauemi mata kawemai me te matotoru ōrite i ērā i hangaia mai i ngā rauemi mata o te kāinga. Heoi, mō te puranga kotahi o ngā pokepokea ai, ka hiahiatia pea he tukanga pupuhi rerekē mō ngā rā whakaputa rerekē. Ko te kounga o te pokepokea ai te mea e whakatau ana i te uauatanga o te tukanga pupuhi. Ko ngā whakaritenga mō te pokepokea ai ko te parakore, te mārama, te kore poke, te kore tae, te roa tika o te pūwāhi werohanga, me te āwhiowhio huri noa.

He tae totoka te nuinga o ngā pounamu rauemi PP me te PE, ko ngā rauemi PETG, PET, me te PVC he mārama, he tae mārama rānei, he āhua mārama, he ātaahua hoki, ā, kāore i te maha te whakamahinga o ngā tae totoka. Ka taea hoki te peita rehu i ngā pounamu rauemi PET. He pūwāhi kōpiko kei raro o te pounamu i hangaia ki te pupuhi, he kanapa ake i raro i te māramatanga. He rārangi here kei raro o te pounamu i hangaia ki te werohanga pupuhi. Ko ngā taputapu matua mō ngā pounamu i hangaia ki te pupuhi ko ngā aukati o roto (e whakamahia whānuitia ana mō ngā rauemi PP me te PE), ngā taupoki o waho (e whakamahia whānuitia ana mō te PP, ABS, me te kiriaku, ā, e wātea ana hoki i roto i ngā whakaotinga hiko, hiko-whakarewa, me te peita rehu, e whakamahia whānuitia ana mō ngā pounamu toner), ngā taupoki upoko papu (e whakamahia whānuitia ana mō te hinu me te hinu), ngā taupoki hurihuri, me ngā taupoki kati (e whakamahia whānuitia ana i roto i ngā raina matū o ia rā).