He whakarōpūtanga kirihou ā-ao tēnei. He rerekē ngā rauemi e tohuhia ana e ngā tau rerekē. Ko te tapatoru e karapotia ana e ngā pere e toru e tohu ana ko te kirihou kai-kai te mea e whakamahia ana. Ko te "5" i roto i te tapatoru me te "PP" i raro i te tapatoru e tohu ana i te kirihou. He mea hanga te hua ki te rauemi polypropylene (PP). He haumaru te rauemi, ā, kāore he paitini. Ko te mea nui, he tino pai te ātete ki te pāmahana teitei me te mahi pumau. He rauemi kirihou ka taea te whakanoho ki roto i te oumu ngaruiti.
E whitu ngā momo tohu mō ngā hua kirihou. I roto i ngā momo e whitu, ko te Nama 5 anake, koinei anake te mea ka taea te whakamahana i roto i te oumu ngaruiti. Ā, mō ngā peihana karāhe motuhake me ngā taupoki mō te ngaruiti me ngā peihana uku me ngā taupoki, me tohu hoki te tohu o te rauemi polypropylene PP.
Kei waenga i te 1 ki te 7 ngā tau, e tohu ana i ngā momo kirihou rerekē, ā, ko te "1" kei roto i ā tātou pounamu wai kohuke noa, wai hua, houra waro me ētahi atu pounamu inu i te pāmahana rūma, arā, ko te PET, he pai te kirihou, he mārama, he iti hoki te ātete ki te wera. He ngāwari te whakapohehe me te tuku i ngā matū kino ina neke atu i te 70°C.
He maha ngā wā ka whakamahia te HDPE "Nama 2" i roto i ngā pounamu taonga horoi tinana, he mea ngāwari ki te whakaputa huakita, ā, kāore e pai mō te whakamahinga roa.
Ko te "3" te PVC tino noa, ko te ātete pāmahana mōrahi he 81°C.
He maha ngā wā ka whakamahia te LDPE "Nama 4" hei takai kirihou, ā, kāore tōna ātete wera i te kaha. Ka rewa pinepine i te 110°C, nō reira me tango te kiriata i te wā e whakamahana ana i te kai.
He kirihou kai-kai te rauemi PP o te "5", ko te take he taea te hanga tika me te kore e tāpiri i ngā tāpiringa kino, ā, ka taea hoki te tu atu i ngā pāmahana teitei o te 140°C. He mea whakamahi motuhake mō ngā oumu ngaruiti. He maha ngā pounamu pēpi me ngā pouaka tina whakamahana e hangaia ana ki tēnei rauemi.
Me mārama ko ētahi pouaka tina ngaruiti, he mea hanga te tinana o te pouaka ki te PP Nama 5, engari ko te taupoki o te pouaka he mea hanga ki te PE Nama 1, ki te PS rānei (kei roto i ngā tohutohu whānui mō te hua te whakamārama), nō reira kāore e taea te whakauru ki roto i te oumu ngaruiti me te tinana o te pouaka.
Ko te "6″ PS te rauemi matua mō te hanga pahuka i ngā taputapu tēpu. Kāore e pai mō te waikawa kaha me te kawakore, ā, kāore e taea te whakamahana i roto i te oumu ngaruiti.
Kei roto i te kirihou "7" ētahi atu kirihou i tua atu i te 1-6.
Hei tauira, he pai ki ētahi tāngata te whakamahi i ngā pounamu wai hākinakina tino mārō. I mua, he kirihou PC te nuinga. Ko te mea i whakahēngia ko te mea kei roto ko te bisphenol A, he mea whakararuraru endocrine, ā, ka ngawari te tuku i runga ake i te 100°C. Kua tangohia e ētahi waitohu rongonui ngā momo kirihou hou hei hanga kapu wai, ā, me aro te katoa ki ēnei.
Pēke kai korehau kohua mō te ngaruiti mō te kete tio, te pēke kai RTE pāmahana teitei, he mea hanga noa iho i te PET/RCPP, PET/PA/RCPP rānei.
He rerekē tēnei i ngā pēke kirihou kua pania ki te konumohe, ā, he mea hanga te pēke ngāwari ki te ngaruiti, he mea pani ki te kiriata polyester motuhake kua pania ki te alumina (AIOx) hei paparanga tiaki, kaua ki te paparanga konumohe paerewa. Mā tēnei ka taea te whakamahana i te pēke katoa i roto i te ngaruiti, me te ārai hoki i ngā mura hiko. He āheinga motuhake tēnei ki te whakaputa hau, ā, ka ngāwari ake te whakamahi i te pēke ngāwari ki ngā kaiwhakamahi i te wā e taka kai ana mā te kore e hiahiatia he wāhi hei waiho i roto i te pēke ina whakamahana ana i te kai i roto i te ngaruiti.
He pēke tū e taea ai e ngā kaihoko te kai tika i ā rātou kai, kāore e hiahiatia kia horoia ngā peihana, ngā pereti rānei. He haumaru te pēke ngāwari ki te whakamahi i te ngaruiti mō te tānga whakairoiro ritenga, e taea ai e ngā kamupene te whakaatu i ā rātou waitohu me ngā mōhiohio hua.
Tēnā koa, tukua mai he pātai. Ka whakaratohia e mātou ētahi atu taipitopito hei tohutoro māu.
Wā tuku: Hakihea-13-2022
