Te kounga o ngā tauira PET
Ko te Polyethylene terephthalate (PET), e mōhiotia whānuitia ana ko te polyester, he rauemi kirihou e whakamahia whānuitia ana. Ko te hanga o Ngā pounamu PET ka taea te wehewehe ki ngā tukanga matua e rua i runga i te momo o te preform: te werohanga totoro pupuhi (ISBM) me te extrusion totoro pupuhi (ESBM). I roto i ēnei tikanga e rua, ko te ISBM te mea noa ake nā te ngāwari o te whakahaere, te pai o te whakaputa, me te iti o te tere para. I roto i te tukanga hanga pupuhi-whakarewa ngā pounamu whakapaipai, ka werohia ngā maramara PET ki roto i te tauira. 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 o te 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 tauira i hangaia mā te werohanga mō te neke atu i te 24 hāora i mua i te whakamahinga. Me penapena ngā tauira kāore i whakamahia i muri i te whakamahana mō te neke atu i te 48 hāora i mua i te whakamahana anō.
Te wā rokiroki o ngā pounamu whakapaipai kaua e neke atu i te ono marama. Ko te kounga o ngā preforms e whakawhirinaki nui 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 ngāwari ake te pupuhi-pokepoke i ngā preforms i hangaia mai i ngā rauemi mata kawemai i ērā i hangaia mai i ngā rauemi mata o te kāinga me te matotoru ōrite. Heoi, mō ngā preforms o te puranga kotahi, ka hiahiatia pea he tukanga pupuhi-pokepoke rerekē mō ngā rā whakaputa rerekē. Ko te kounga o ngā preforms e whakatau ana i te uauatanga o te tukanga pupuhi-pokepoke. Ko ngā whakaritenga mō ngā preforms o Ngā pounamu PET kia parakore, kia mārama, kia kore he poke, he tae rānei, me te roa e tika ana mō te pūwāhi werohanga me te āwhiowhio huri noa.
Tuatahi, ko te rahi o te whakaaturanga o Ngā pounamu PET he mea nui mō te ipu tākai whakamutunga. I te whakatau i te rahi o te tauira, ko te whakaaro tuatahi ko te kaupapa o ngā pounamu whakapaipaiMō te kai, te inu, te whakapaipai, ētahi atu mara rānei? Tērā pea he rerekē ngā āhua me ngā kaha o ngā pounamu whakapaipai mō ngā kaupapa rerekē. Mā te āta whakaaro ki ngā whakaritenga kaha o te hua, ka taea te whakatau i te kaha o te tauira, ā, ka taea te whiriwhiri i te āhua e tika ana, pērā i te porowhita, te tapawhā, te porowhita rānei.
Tuarua, ko te whānui o te kaki (te waha rānei) he tawhā matua. I te ine i te kaki, me whakarite kia whakapae te ine kia tika ai te rahi o te whānui. Ka pā tika te rahi o te kaki ki te mahi whakakī me te ringihanga o Ngā pounamu PET. Tērā pea he rerekē te rahi o te kaki o ngā hua rerekē, nō reira me whiriwhiri tika te kaki i te wā e hoahoa ana i te pounamu.
Hei whakamutunga, ko te taumaha o te tauira e pā ana ki te taumaha o ngā pounamu whakapaipai, tae atu ki te tinana me te kaki. Ka taea te ine tika i te taumaha mā te pauna, mā te whakamahi rānei i te tauine porowhita. Ko te whakatau i te taumaha e pā tika ana ki te kaha me te pakari o te pounamu. Ina whakaarohia te taumaha, me whakataurite te kaha hanganga o te pounamu me te utu rauemi kia tino kaha te hua whakamutunga, kia tutuki ai hoki ngā whakaritenga ōhanga.
Ko te rahi, te whānui o te kaki, me te taumaha o te tauira o Ngā pounamu PET he mea nui ngā whakaaro i te wāhanga hoahoa o ngā pounamu kirihouMā te ine me te whiriwhiri tika i ēnei tawhā, ka taea te whakarite kia tutuki i te pounamu whakamutunga ngā whakaritenga hua me ngā paerewa ahumahi, kia pai ai te mahi takai. I te wā o te tukanga hanga pounamu, mā te aro tonu ki te whakahaere i ēnei tawhā ka āwhina i te whakaputa i ngā pounamu kirihou kounga teitei.