Tēnā te 12 o Pēpuere, 2020 He aha te Polieitena LDPE? He raua koa e kitea ana i roto i ngā mea e tino rerekē ana, he mea kitea i ngā mea pakaging kia mea hoki i ngā mea e whakamahi nei mā tātou i ngā ra o tēnei wā. Ko tēnei tuhinga ka mōhio ake tātou i te Polieitena LDPE i runga i ngā rima take matua.
LDPE: Polyethylene LDPE ko tērā e mohiotia ana hei āhua haki i te mea kōwhaiwahia, engari he whakapuakitanga nui me te wero iti. Ko tēnā i taea ai e ia te hoatu i ngā haukuru kei te motuhake, ā, ka taea e ia te kawea ki runga, ki raro, ki waenganui i ngā āhuatanga katoa. He mea nui rawa mo te LDPE e mohio ana koe, ka u ki te wāhi iti, ka whakatupu mai i te whakahaere, ka hanga mai i ngā āhuatanga katoa. Ka kitea te LDPE i roto i te maha o ngā mahi, ina whakaaetia nei e koe, pērā i ngā hīputi haki i whakamahiia e tātou mō ngā kai, ngā hīputi whakatauki i whakamahiia ki te tirotiro i te kai, me ngā pūhoro e mau ana i ngā monoi me ngā monoi karu. Maha ngā mahi i hanga i te polyethylene LDPE ka kitea i roto i tō whare i kitea e koe, nā reira ka kore rawa ngā tangata e mōhio ana ki tērā!
I whakarerekētia ngā whenua polyethylene LDPE i ngā pūtake me ngā hanga mahi. Ko tōna whakaaetanga o te karepe me te rangatira, he pai noa ki te hanga i te nui o ngā mahi. Hei tauira, ka whakamahi te LDPE ki te hanga i ngā paoro wai, i ngā rākau whakawhiwhi kaha e tiakina ana mātou i te hauora ki te itinga o ngā mate, ā, i ngā tuara tamariki e takaro ana. Noho iti ake te LDPE, koia nei he iti rawa atu te utu kawe, ā, e awhi ana i ngā wheako moni kawe. Ko tēnei e hāngai ana ki ngā pakihi e hiahia ana ki te whakaiti i ngā raupapa. Ahakoa, he iti noa te paepae whakairi o te LDPE, e taea ana e ia te whakairi me te hanga i ngā mahi hou. Nā tēnei ka ea te pūnaha whakahoki, koia nei he pai noa ki te taiao hei whakamahere pai mō te whakaiti waipiro me te whakangungu i ngā tikanga whakahaere.
Ēngari, he momo whakapapa pai āhe tonu me ngā whakapapa nui o te polyethylene LDPE i roto i te hanga mahi. Ko te nui nui nei o te LDPE ko te mea ka taea e ia te whakahoki. Arā, i te wa e kore nei te hua e whai pūmanawa ana, ka taea e ia e whakatupu hou ai i ngā hua hou, pērā i ngā takutai i ngā pātaka me etahi atu hanganga noa nui ki waho. Nō reira, kei te māhorahora te LDPE, ko ngā hua e hanga ana mai i a ia ka hokihoki iho ngā take moe waka hei whakamahia mo te tuku mai me te haere atu. Ko tēnei ka whai wāhi nui ki te whakanui i tō tātou tohu aniwaniwa, e whai wāhi nui ana ki te tiaki i tātou whenua. Kāore i konei, he raru ā-waha ētahi nei o te LDPE. He raru kotahi ko te mea ka kore e taea te whakahaere i te wera. Arā, ka riro e te whakaaweawe ki te wero i ngā wāhi wera nui. Kāore te LDPE i te pūhuruhuru, arā, kāore ia i te mea e taea te whakarereke naturally i te taiao. Nā ēnei tikanga, ka whai wāhi nui ki te whakaaro i ētahi momo matāmua mō ngā hua e taea ana ki te whitiwhiti i te wera nui ranei, e pūhuruhuru ana.
Kei te whakamahi te Polyethylene LDPE i tētahi mātao e mōhio ana hei 'polymerization'. Ko tēnei he kupu roa e tuhi ake ana i aha ko ngā mea e hangaia ai te rauropi. I tēnei mahi, ka wera te hāora e mōhio ana hei ethylene, ka whakapakari haere. Ki te pērā, ka hanga i ngā takotoranga roa o ngā molekūra e mōhio ana hei polymers. Ka maroke ngā polymers nei, ka huri noa atu ki te rauropi e mohio nei nei hei LDPE. Nā te mea kei roto i tana rārangi ā-horopaki o te LDPE ngā tohu tūruhe me ngā tohu taurangi, ko tana āhua nui rawa ko te nuinga o te wehewehenga. Ko tētahi hua pai anō o te hanga i te LDPE ko te mea kaore i te hokohoko o te wera me te pakari, e ai ki reira, he rauropi iti te utu kia hanga. He mea nui, he mea pai, he mea whai hua mo ngā kāwanatanga.
Te whiwhi i te taiao me te hua o te polieitena LDPE ki roto i ngā mahi hou me ngā whakarite hou. Hei tauira, ngā kaiwhakahaere hauora he wā ka tirohia ngā whakamahi LDPE mō ngā rīpe hokohoko. Ko tēnā nui rawa, nā tētahi tangata ko ngā rīpe latex e pānga ana ki a rātau, nā reira ka taea e te LDPE te whakamahi mo tērā. Ka whakamahia anō te LDPE mō te hanga i ngā rara mo te tuhinga 3D. Ko tērā e hiahia ana kia whakapono hei whiringa pai mō ngā hiranga me ngā kaihanga e hiahia ana ki te hanga i ngā mahi hou me ngā whakarite. Ko te polieitena LDPE he tūranga whakatipu nui, ā, ka mutu ia hei rauemi matua tonu i waenganui i ngā whenua iti nei.
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