Ko ngā rau GPPS, arā, ko ngā rau Polystyrene Whānui, he rauemi kirihou mārō, mārama hoki, he mea hanga mai i te kapia polystyrene. E mōhiotia ana mō tōna māramatanga pai, tōna kanapa, me tōna ngāwari ki te hanga. He mea whakamahi noa te GPPS i roto i ngā momo ahumahi pēnei i te takai, te tā, me te hikohiko.
He mama, he pakari, ā, he pai te pumau o ngā āhua o ngā rau GPPS. He tino mārama, he ātaahua hoki te mata kanapa. Hei tāpiri, he pai ngā āhuatanga ārai hiko o te GPPS, ā, he ngāwari ki te whakamahana.
E whakamahia whānuitia ana ngā pepa GPPS i roto i ngā whakaaturanga hokohoko, ngā tohu, ngā takai, me ngā ipu kai whakakorekore. Kei roto hoki i ngā pouaka CD, ngā mea whakamarara rama, me ngā paepae pouaka whakamātao. Nā te mārama o ēnei, he maha ngā wā ka whiriwhiria mō ngā tono e hiahia ana kia ātaahua te tirohanga.
Ae, e kiia ana he haumaru ngā rau GPPS mō te kai ina hangaia kia rite ki ngā paerewa kai. He mea whakamahi noa ēnei i roto i te hanga kapu, paepae, me ngā taupoki whakakorekore. He mea nui kia whakaūhia te tiwhikete mai i te kaiwhakarato mō te tutuki i ngā whakaritenga mō te pa ki ngā kai.
He mārama, he pakarukaru, he pakari hoki ngā rau GPPS, ko ngā rau HIPS ia he mātotoru, he pakari, he ātete ki te pānga. He pai ake te GPPS mō te mārama o te tirohanga me te ataahua. He pai ake te HIPS mō ngā tono e hiahia ana kia kaha ake te kaha me te ngāwari o te miihini.
Ae, he tino pai ngā rau GPPS mō ngā tukanga hanga wera. Ka whakangawari i ngā pāmahana iti, ka ngāwari te hanga me te pokepoke. Nā tēnei āhuatanga ka pai te GPPS mō ngā takai ritenga me ngā hua whakaaturanga kua hangaia.
Ka taea te hangarua i ngā rau GPPS i raro i te waehere hangarua kirihou #6 (polystyrene). Ka taea te kohikohi, te tukatuka, me te whakamahi anō i roto i ngā momo mahi tuarua. Heoi, ko te wātea o te hangarua ka whakawhirinaki pea ki te hanganga whakahaere para o te rohe.
He whānuitia ngā matotoru o ngā pepa GPPS, mai i te 0.2 mm ki te 6 mm te nuinga. Ko te whiriwhiri i te matotoru ka whakawhirinaki ki te tono me ngā whakaritenga mahi. He maha ngā wā ka taea e ngā kaihanga te whakaputa i ngā matotoru ritenga ina tonoa.
Me penapena ngā rau GPPS ki tētahi wāhi hauhautanga, maroke, kia matara atu i te rā tika. Mēnā ka roa te pānga ki ngā hihi UV, ka kōwhai, ka pakarukaru rānei. Hei ārai i te piko, i te pakaru rānei, me penapena kia papatahi, kia tū tika rānei, me te tautoko tika.
Ae, ka tautokohia e ngā rau GPPS ngā momo tikanga tā, tae atu ki te tā mata me te tā UV. Nā te maeneene me te kanapa o te mata ka taea te whakaputa whakairoiro kanapa me te taipitopito. Me tika pea te maimoatanga mata, te paninga rānei kia pai ai te piri o te waituhi.
Ahakoa he mārama noa ngā pepa GPPS, he maha ngā tae e wātea ana. Kei roto i ngā tae paerewa ko ngā tae mārama pērā i te kikorangi, te whero, te hina auahi rānei. Ka taea te whakaputa tae ritenga i runga i ngā whakaritenga motuhake o te kaupapa.