Kua wehea ngā kirihou kai-kai ki: PET (polyethylene terephthalate), HDPE (polyethylene kiato teitei), LDPE (polyethylene kiato iti), PP (polypropylene), PS (polystyrene), PC me ētahi atu wāhanga.

PET (polyethylene terephthalate)

Ngā whakamahinga noa: ngā pounamu wai kohuke, ngā pounamu inu warowaihā, me ētahi atu.
He mea hanga ngā pounamu wai kohuke me ngā pounamu inu warowaihā ki tēnei rauemi. Kāore e taea te hangarua i ngā pounamu inu mō te wai wera, ā, he ātete tēnei rauemi ki te wera tae atu ki te 70°C. He pai anake mō ngā inu mahana, inu tio rānei, ā, he ngāwari te whakapē i te āhua ina whakakīia ki ngā wai wera nui, ina werahia rānei, ka rere atu ngā matū kino ki te tangata. Heoi anō, kua kitea e ngā kaipūtaiao i muri i te 10 marama o te whakamahinga, ka tukuna pea e tēnei hua kirihou ngā matū carcinogen he paitini ki te tangata.

Mō tēnei take, me maka atu ngā pounamu inu ina pau, kaua hoki e whakamahia hei kapu, hei ipu rokiroki rānei mō ētahi atu taonga hei karo i ngā raruraru hauora.
I whakamahia tuatahitia te PET hei muka hangai, tae atu ki te kiriata me te rīpene, ā, i te tau 1976 anake i whakamahia ai i roto i ngā pounamu inu. I whakamahia te PET hei whakakī i roto i te mea e mōhiotia whānuitia ana ko te 'pounamu PET'.

He tino pakari, he pakari hoki te pounamu PET, he māmā (1/9 ki te 1/15 noa iho o te taumaha o te pounamu karāhe), he ngāwari ki te kawe me te whakamahi, he iti ake te kaha e pau ana i te wā e hangaia ana, ā, he ātete ki te uruhanga wai, he kore e memeha, ā, he ātete ki ngā waikawa me ngā kawakore.

I ngā tau tata nei, kua waiho hei ipu whakakī nui mō ngā inu warowaihā, te tī, te wai hua, te wai inu kua tākaihia, te waina me te ranu pīni, me ētahi atu. Hei tāpiri, kua whakamahia ngā kai horoi, ngā hopi horoi makawe, ngā hinu kai, ngā mea kakara, ngā kai reka, ngā rongoā, ngā mea whakapaipai, me ngā inu waipiro i roto i te tini o ngā pounamu tākai.

HDPE(Polyethylene Kiato Teitei)

Ngā whakamahinga noa: ngā hua horoi, ngā hua kaukau, me ētahi atu.
Ko ngā ipu kirihou mō ngā hua horoi, ngā hua kaukau, ngā putea kirihou e whakamahia ana i ngā hūpāmakete me ngā toa hokohoko he mea hanga ki tēnei rauemi, ka taea te tu atu ki te pāmahana teitei o te 110 ℃, kua tohua ki te kai. Ka taea te whakamahi anō i ngā putea kirihou mō ngā hua horoi me ngā hua kaukau i muri i te horoinga āta, engari kāore i te tino horoia ēnei ipu, ka waiho ngā toenga o ngā hua horoi taketake, ka huri hei wāhi whakatipu huakita me te horoinga kāore i oti, nō reira he pai ake kia kaua e hangarua.
Ko te PE te kirihou e whakamahia whānuitia ana i roto i te ahumahi me te oranga, ā, e rua ngā momo e wehea ana: te polyethylene kiato-teitei (HDPE) me te polyethylene kiato-iti (LDPE). He teitei ake te ira rewa o te HDPE i te LDPE, he mārō ake, ā, he ātete ake ki te mimiti o ngā wai waikura.

He mea noa te LDPE i roto i te ao hou, engari ehara i te mea nā te momo ipu i hangaia ai, engari nā ngā putea kirihou e kitea ana i ngā wāhi katoa. Ko te nuinga o ngā putea kirihou me ngā kiriata he mea hanga ki te LDPE.

LDPE (Polyethylene Matotoru Iti)

Ngā whakamahinga noa: kiriata piri, me ētahi atu.
He mea hanga katoa tēnei rauemi ki te kiriata piri, ki te kiriata kirihou, me ērā atu mea. Kāore i te kaha te ātete ki te wera, i te nuinga o te wā, ka puta he āhua rewa wera mō te kiriata piri PE i te pāmahana neke atu i te 110 ℃, ā, ka kore e taea e te tinana te pirau i te kirihou. Waihoki, ina werahia te kai i roto i te kiriata piri, ka ngāwari te whakarewa i ngā matū kino o te kiriata e te hinu i roto i te kai. Nō reira, he mea nui kia tangohia tuatahitia te takai kirihou mai i te kai i roto i te ngaruiti.

PP (polypropylene)

Ngā whakamahinga noa: ngā pouaka tina i roto i te ngaruiti
He mea hanga ngā pouaka tina mō te ngaruiti ki tēnei rauemi, he ātete ki te 130°C, ā, he iti te mārama. Koinei anake te pouaka kirihou ka taea te whakauru ki roto i te ngaruiti, ā, ka taea te whakamahi anō i muri i te horoinga āta.

He mea nui kia mōhiotia ko ētahi ipu ngaruiti he mea hanga ki te PP 05, engari ko te taupoki he mea hanga ki te PS 06, he mārama pai engari kāore e ātete ki ngā pāmahana teitei, nō reira kāore e taea te whakanoho ki roto i te ngaruiti me te ipu. Hei haumaru, tangohia te taupoki i mua i te whakanoho i te ipu ki roto i te ngaruiti.
E taea te kī he teina te PP me te PE, engari he pai ake ētahi āhuatanga ā-tinana me ā-mīhini i te PE, nō reira he maha ngā wā ka whakamahia e ngā kaihanga pounamu te PE hei hanga i te tinana o te pounamu, ā, ka whakamahia te PP me te pakeke me te kaha ake hei hanga i te taupoki me te kakau.

He teitei te pāmahana rewa o te PP, arā, 167°C, ā, he ātete ki te wera, ā, ka taea te whakahoromata i ana hua ki te mamaoa. Ko ngā pounamu e tino hangaia ana mai i te PP ko ngā pounamu miraka pīni me te miraka raihi, tae atu ki ngā pounamu mō te wai hua parakore 100%, te miraka kawa, ngā inu wai hua, ngā hua miraka (pēnei i te pūtini), me ētahi atu. Ko ngā ipu nui ake, pērā i ngā peere, ngā ipu para, ngā totohu horoi, ngā kete, ngā kete, me ētahi atu, he mea hanga te nuinga mai i te PP.

PS (polystyrene)

Ngā whakamahinga noa: ngā peihana pouaka nūru, ngā pouaka kai tere
Ko te rauemi e whakamahia ana hei hanga peihana nūru me ngā pouaka kai tere pahuka. He ātete ki te wera me te makariri, engari kāore e taea te whakanoho ki roto i te oumu ngaruiti hei karo i te tukunga o ngā matū nā te pāmahana teitei. Kaua e whakamahia mō ngā waikawa kaha (hei tauira, te wai karaka) me ngā matū kawakore, nā te mea ka pirau te polystyrene, he mea kino ki te tangata. Nō reira, me karo koe i te tākai kai wera ki roto i ngā ipu kai tere i ngā wā katoa e taea ana.
He iti te mimiti wai o te PS, ā, he pumau te āhua, nō reira ka taea te werowero, te pēhi, te whakaputa, te hanga rānei i te wera. Ka taea te werowero, te pēhi, te whakaputa me te hanga i te wera. Ko te tikanga, ka whakarōpūtia hei pahuka, hei kore pahuka rānei i runga i te mea kua pā ki te tukanga "huka".

PCme ētahi atu

Ngā whakamahinga noa: ngā pounamu wai, ngā kapu, ngā pounamu miraka
He rauemi whānui te PC e whakamahia ana, inā koa i roto i te hanga i ngā pounamu miraka me ngā kapu mokowā, ā, he mea tautohenga nā te mea kei roto ko te Bisphenol A. E kī ana ngā tohunga, i roto i te ariā, mena ka hurihia te BPA 100% ki te hanganga kirihou i te wā e hangaia ana te PC, ko te tikanga he kore rawa te BPA o te hua, me te kore e whakahuatia te tukunga. Heoi, ki te kore he iti o te BPA e hurihia ki te hanganga kirihou o te PC, ka tukuna pea ki roto i te kai, ki ngā inu rānei. Nō reira, me tino tupato i te whakamahi i ēnei ipu kirihou.
Ka teitei ake te pāmahana o te PC, ka nui ake te BPA ka tukuna, ā, ka tere ake te tukunga. Nō reira, kaua e tukuna he wai wera ki roto i ngā pounamu wai PC. Mena ko te nama 07 tō ipu wai, ka taea e ēnei te whakaiti i te mōrearea: Kaua e whakamahana i te wā e whakamahia ana, kaua hoki e whakaatu ki te rā tika. Kaua e horoia te ipu wai ki roto i te mīhini horoi rihi, i te mīhini horoi rihi rānei.

I mua i te whakamahinga tuatahi, horoia ki te houra tunutunu me te wai mahana, ka whakamaroke mā te taiao i te pāmahana rūma. He mea tika kia mutu te whakamahi i te ipu mēnā he maturuturu, he pakaru rānei, nā te mea ka taea e ngā huakita te noho ki roto i ngā huakita i roto i ngā hua kirihou mēnā he kikokore te mata. Āta karohia te whakamahi anō i ngā taputapu kirihou kua pakaru.