E 200 tau te roa o te pirau mō te 20 meneti noa iho o te whakamahinga. He mea iti te kakau witi e whakamahia whānuitia ana i roto i ngā whare kai. He mea hanga i Mesopotamia, heoi anō kei te whakawehi i te heke mai o ēnei rā. Pērā i ngā miro miro, he hua kirihou kotahi te whakamahinga o ngā kakau witi. Mena he iti noa iho ēnei mea ki a koe, e 70% o ngā para e poke ana i ngā moana. Kua whakapau kaha te Kotahitanga o Ūropi ki te whakakore i ngā kakau witi kirihou i te tau 2021. Heoi, kāore tēnei whakapau kaha e aro katoa ana ki te take o te kirihou. Me pēhea tātou e tīmata ai i tētahi huringa i roto i ō tātou oranga o ia rā? Ka kitea e koe i roto i tēnei tuhinga ngā take e huri ai ki kakau witi pirau-ora he take nui.

Ko te kakau witi tuatahi i roto i te hītori

He tino māmā te whakamahinga o te ngongo. He tokotoko porotaka kua werohia ki waenganui i ngā pito e rua. Kua whakamahia e te tangata hei inu wai mai i te wā o ngā Sumerians i Mesopotamia. Ko ngā ngongo tuatahi o te hītori i kitea tuatahitia i te mano tau 4 BC. Ko te tauira tawhito rawa atu o te mea e rite ana ki ā tātou ngongo o nāianei kei roto i te te tāone tawhito o Ur i Sumeria Kei roto i te urupā o Kuini Puabi, he tino tangata rongonui o te hapori Sumeria, te kakau witi.

He aha i pēnei ai te ingoa o te kakau witi?

I te whanaketanga o te kakau witi, ka rerekē rawa te āhua o te kakau witi. I te rautau 19, i whakamahia e te tangata te kakau witi rai hei mimiti i te wai mai i tā rātou inu. Ina hoki, i taua wā he ngāwari te kimi i te kakau witi, kāore i te utu nui, he ātete ki te wai, ā, he ārai wai hei whakatutuki i tana mahi. Ko te ingoa o te kakau he kakau witi nā te mea ka whakamahia noa e te tangata hei inu. Hei tiki i ētahi, me tango noa e koe te kākano kakau witi i ō rātou taringa.

kakau witi pirau-kore e taea te whakamahi

Pērā i te kakau witi, he kakau pirau pai ētahi atu rauemi, ka taea te whakamahi kotahi. Pēnei te āhua o ngā kakau i hangaia mai i te tō, ngā ngongo i hangaia ki te rimurapa, te pepa, te kāri rānei ngā kakau witi e taea te kai. Mena he āhua takaro ēnei, ko ngā kakau PLA te mea tino ātete.

Kakaho pirau PLA

Ka taea hoki te whakapūkara i te kakau witi pirau-ora PLA. He matū koiora-polymer te PLA i hangaia ki te koranu o ngā māngaro tipu rerekē, ko te nuinga he māngaro kānga. He māngaro ngāwari ki te whakahou, ā, he rauemi pirau-ora 100%, nō reira he hauora mō te taiao. He pai ake ngā mea katoa e pā ana ki te kakau witi PLA mō te taiao tae noa ki tōna hanganga, he iti ake ngā hau kati kōtuhi e tukuna ana i te hanga kakau witi ahumahi.

Hei tauira, ko te momo kakau witi pirau-PLA e tukuna ana e mātou he pakari, he ngāwari hoki. Kāore he haunga, ā, he ātete ki ngā pāmahana iti. Kei te wātea ā mātou kakau witi PLA i roto i ngā rahi me ngā āhua rerekē, ā, ka taea hoki te whakaatu i ngā waitohu. Nā tēnei ka pai hoki tā mātou tauira kakau witi PLA mō te whakawairakau ahumahi.