Ko te waikawa Polylactic (PLA) he rauemi pirau hou, he mea hanga mai i ngā rauemi mata māngaro i whakaarohia e ngā rauemi tipu hou (pērā i te kānga). Ka whiwhihia te hukahuka mai i ngā rauemi mata māngaro mā te whakapūkara, kātahi ka hangaia te waikawa lactic tino parakore mā te whakapūkara o te hukahuka me ētahi huakita, kātahi ka hangaia te waikawa polylactic me te taumaha ngota motuhake mā te tikanga hanga matū.
He pai te pirau o tēnei rauemi. I muri i te whakamahinga, ka taea te whakangaro rawa e ngā moroiti o te taiao, ā, ka puta he hauhā me te wai, kāore e whakapoke i te taiao, he mea tino pai mō te tiaki i te taiao. E mōhiotia ana he rauemi e pai ana ki te taiao.
Ko te tikanga maimoatanga o ngā kirihou noa ko te tahunga me te tahu, ka hua ake he nui ngā hau kati kōtuhi ka tukuna ki te rangi, ko ngā kirihou waikawa polylactic ka tanumia ki te oneone hei pirau, ā, ka uru tika te hauhā waro i hangaia ki roto i te oneone, ka mimitihia rānei e ngā tipu, e kore e tukuna ki te rangi, ā, e kore e puta te pānga kati kōtuhi.
