Te polietilini rorohiko iti, rānei te LDPE, he mīhini ā-huamahi tērā. He haukainga noa iho ia – e kore e nui te mana o ia ki te whakaheke. Ko tēnei mīhini hoki he wawau, e āhei ana kia kawe, kia whati kē hoki ki te kawe me te whakapiri, kāore i te pūtahi. Ka moemoea te LDPE kia eke tonu ki te whitiwhiti i ngā wā e rite ana, paku hoki, me te mōhio. E ai ki te whakatipuranga o te LDPE, ka whakapuhi atu i ngā itiiti e mōhio ana hei etihana monomera. I te wā e whakariterite ana, ka hono ngā paenga nei ki te hanga i ngā taumata roa o ngā mīhini plastikina. Ko te LDPE he haukainga, he kawe, ko ēnei taumata roa he take nō reira, me pēhea te whaimana o tēnei matāmua.
Ko te PE whaiaro hei whakamahi i waenga o ētahi atu rēhita kei roto i tō tātou oranga nēhi. Pūrākau me ngā Pūtake Mahi: PE whaiaro Ko te PE whaiaro te pūoro i kitea rawa i roto i ngā kaweake. Mēnā ko te PE whaiaro e whakamahi ana mo ngā kete ki uta, ahakoa hoki mo ngā kaweake e whakarite nei i te kai. Nō reira he mea nui mō tātou kia tiakina ai ō mahi katoa hei reka me te haumaru. Ahakoa ngā kaweake, ko te PE whaiaro hoki e whakamahi ana hei hanga i ngā kiriwhera, ngā pīpu, me ngā mihini. Ko tana kotahi me te mana wehe ka pai hei hanga tamariki whakataki, me ngā mea tuhura, ā, ka taea hoki e ia te āwhina i ēnei i hiahia ki te haere me ngā mea pērā i ngā wae hokohoko. Nā tēnei ka whakaatuhia ai te kotahi o te PE whaiaro, ā, ka taea e koe te whakamahi i a ia i runga i ngā mea iti noa i tō marae.
Kei te whai ētahi pūtake pai mō te PEH. Ko tana taumata nui rawa ko te mea kua ea ki te hanga i roto i ētahi āhua. Ko tēnā ka hiahia ngā whare hanga ki te whakatū mai i ētahi atu mahi ki te maha me te iti o te moni. Ko te PEH anō hoki e whai ana i te whakamomori ki te wai, e āwhina ana ki te whakaiti i te mamae o te wai. Ko tēnā he mea nui rawa noa iho mō te whakahoki i ngā mea e hiahiatia ana kia mau ki te riro i te wai, me te whakahoki mai i te wai mō te whitiwhiti mahi rānei, me te whakaputu. Hei aha, he wehewehe ākona hoki te PEH. Engari kaore ia e mana ana i waenga i ētahi atu momo pūoro, e kitea ana e tērā pea ka ea ki te tahuri, ki te kawe pukapuka. Kaore hoki te PEH i te whai take ki te whakarite i ngā wā e tino uaua nei, e whakaheke ana tana whakamahi i waenga i ngā wā e hē ki te uru.
Kei tēnei e whakaae ana te LDPE he mōhiotanga anake o ngā motu, ā, he nui ngā momo kē, ēngari he āhuatanga rerekē ki ia. Ko te polyethylene matua (HDPE) he momo motu rawa ake, he whanikite rawa atu i te LDPE. Nā tēnei kei te tonu ai te HDPE hei whakamahi mo ngā mea pērā i ngā wāhi whakarato me ngā paipī. He momo atu, ko te polyvinyl chloride (PVC), e mohio ana ki tana maia me tana whiuhere ki te ahi. Kāorekaua, he iti noa iho tana hirere, e ārao ana i ōna whakamahi. He whakatenetene, nā te mōhio i ngā āhuatanga e waruwarutia ana i te LDPE ka taea e mātou te whiriwhiringa i te motu tika mō ngā whakamahi e hiahiatia nei. Ki te whakamatauria ngā pai me ngā hapa o ia momo motu, ka taea e ngā kaihangarau te whakatau pai i te motu e whakamahia nei i roto i ō rātou mahi.
Ki te whiwhi i te mōhiohio nui a ngā kaihokohoko ki te whakatika i te taiao, ko te LDPE kei te whēako tonu tana whakamahi hei rauropi. Ko te nui o te pai mea ko te LDPE ka taea e ia te whakahoki. Koia nei he pai nui, nā te mea, ina whakaiti te whakawhaowhao i ngā mahi LDPE, ka taea e mātau kia whakaawe nei ki ngā hua hou, koia he pai anō i te mea ka tūpono ai te whenua i runga i te kimi i ngā momo matāwhiorangi e pāngia ana i te āhua. He tari kotahi e kuhuna ana i mua i te kahikatoa i te hanga i ngā mahi LDPE pai taiao, ko Yuezheng. Kei te haere tonu hoki a rātou kia whakapai ake te wā i roto i te hokitanga LDPE, te iti iho i ngā waipiro, me te whakarite i ngā whakaaetanga pakirehua. Ko ia nei he whakamīharo nui ki te tiaki i tō tātou ao, me te hiahia kia whakahaere i ngā rauemi me te tangata.
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