Ko te tukanga inihua he wāhanga matua i te wātaka o te whakakīnga inihua, e pa ana mo te mahi whaihua me te kounga o te hua mutunga. I roto i tenei tukanga, ko te pāpaku paraihe kua runga te inihua ki roto i te takotoranga rāwekenga, ā, ko te tere o tenei mahi whakakīnga e pa ana nui ki ngā kaute hui. Ko te tere inihua me te totohu tika he mea nui hei whakaiti i te wātaka me te prevetia i ngā ngoikera pērā i ngā tohumu noa rānei. Mēnā ka inihua tino tere, tino kaha rānei te totohu, ka puta ngā ngoikera; mēnā ka inihua tino uaua, ka roa ake te wātaka. Ka tūmanako te hoahoa mōhiotia o te mōhi tinana ka tāutuhia te tere whakakīnga kia taea ai te hui tere ake i te wa e mau ai te kounga, na reira ka pai ake te mahi ake o te whakaputa.
Ko te wā kōhinu he wā herekenga mō te whakapumautanga i te wāhanga hangaia, ā, ko te tino roa pea tēnei wā o te taraiwa whakauru. Ko ngā aronga kōhinu e pono ana, pērā i te kōhinu ōrite me te whakahaere tika i te hihiani, kei te matua here ki te whakaiti i tēnei wā me te whakaiti i te wā taraiwa. Mā te whakawhanui ake i te nekehanga o te wera mai i te pāpaku ki te pāpaka huri, ka whakapumaua te wāhanga tere ake me te ōrite, ka iti ake te kōpiko me te whakapai ake i te pumau o te rahi. Kua whakaatu mai ngā tūhinga kei te tautohe he nui te whakaiti i te wā taraiwa me te whakapai ake i te mahi ake o te whakaputa. Hei tauira, ko te whakauru i ngā ara kōhinu tōtika kua whakaatu i te iti ake o te wā kōhinu e 30%, e hāngai ai ki te putanga o ngā kaiwhakaputa.
Ko ngā tikanga ejection kei te tōaitanga o te whakapai me te tere o te wa mātai. Ko te tikanga e whakawhitinga ai i te wāhanga mai i te torehuruhuru kāore i te pa ki te roa o te wa, engari ko te pa ki te whānuitanga hoki o te whanaketanga. E ērangi ana ngā tikanga ejection, pērā i ngā karu mekanikai, te whakaputanga hau, te papa tāpene rānei e whakapai ai i te hua. Hei tauira, ko te nekehanga mai i te tikanga ringa ki ngā tikanga ejection awhomahi e iti noa ai te wa mātai i te tere me te whirinakitanga ki te tango i ngā wāhanga mai i te torehuruhuru. Ko ngā tikanga ejection tere ka iti ake i te wā kua pau ai i waenganui i ngā wa mātai me te whakapai ake i te kaha o te mahi mātai. Ko ngā tikanga ejection angitu he mea matua ki te eke atu ki ngā tere whanake teitei i te wā e tiaki ana i te kounga me te whakapapa o ngā wāhanga mātai.
Ko te hoahoa o ngā ara whakakau he mea matua nui ki te whakapai ake i te mahi ake o te pōrotohi me te whakaiti i ngā wā tapawhāwhā ki te whakapūoro. Āwhina i te ara whakakau tētahi e ū ana i te wera katoa o te pōrotohi, ka tūtohu ai i te wā iti ake i te wāhi i hangaia. Ko ngā tautohotanga pai pea, pērā i te whakakau tōpito, e āki ai te huarahi whakakau, arā ka poto ake ngā wā tapawhāwhā. I te kaha, ko ētahi rangahau e whakaatu mai ana ka taea e ngā hoahoa ara whakakau tika te whakapai ake i te tere tapawhāwhā kia 20%. Kātahi ka rite ake te hua o te mahi me te kounga o ngā hua i te wā e whakaputu ana i te wāhi i te mutunga.
Ko te whakarite i ngā tatau me te āhua he wāhi matua nui ki te āwhina i te rere me te kaha o te hōhonu whakakī mā te mōhini. Ko te āhua tatau pai e whakatau ana i te kaha o te pāpaku paraihe ina tū ana ki te kōpae, ka āwhina i te wā kia kīia me te roa o te taraiwa. Ko ngā momo tatau rerekē, pērā i ngā tatau tapa, neke atu ki ngā punaha kaiwhakarewa, e whai ana i ngā painga me ngā uaua rerekē; hei tauira, ko ngā punaha kaiwhakarewa ka wehe kore e hiahiatia ai te tapa, ka iti ake i ngā mahi i muri mai o te whanaketanga. Kua whakaaturia e ngā tononga ake ko ngā panonitanga ā-tatau e āwhina ana i te tere whanaketanga, ka whakaponoa ko te whakarite tatau tino whakaaro he tino āwhina i te tere o te hanga.
Ko te whakamaumahara i te tino pāpaku o te tapa he kaupapa matua hei whakahaere i te wāti mō ngā wāhanga hāpai kua whakaputua. Ko te tikanga tuatahi ko ngā papaku iti ake e āwhina ana i te wā tiakina kia tere ake, nō reira ka poto ake te roa o te wā tonu. Heoi anō, he mea nui kia mau tonu ai te whai pāpaku, nō reira he mea nui kia kitea te tōtō (balance). E ai ki ngā whakaaro tohunga, ko te whakamaumahara i te tino pāpaku tapa e āwhina ai i ngā rawa me ngā here o te whakamahinga e āwhina ai i te tere o te whanaketanga. Hei tauira, te whakamahi i ngā rorohiko tātai hei whakatau i te mahi ake o ngā papaku tapa rerekē e āwhina ai i ngā kaihoahoa ki te tautoko i ngā takotoranga e huritao ai te makariri engari kia mau tonu te kounga, nō reira ka pai ake te whai wā i te whanaketanga.
Ko te whakarere i te takotoranga ka tūhono ki te ahurea o te whakapiripiri hou i roto i te hanga whakapiripiri, e whakanui ai i te whakapai ake i te huringa. Kua rerekētia ngā tikanga whakarere tawhito, ko te whakarere takotoranga ka whai wāhi ki te hoahoa i ngā ara whakarere e āki ai te takotoranga o te mōra. Ko tēnei ara ka tūhono ki te whakarere ū, e iti ai te wā huringa o te mōra. Ko te whakamahi i te whakarere takotoranga ka taea te whakanui ake i te mahinga whakarere, e āwhina ana i ngā whakauru huringa e iti ake ana i te 30% (kaupeka: Plastics Technology). I whakawhitinga ngā tohunga o te ao pakihi i tēnei whanaketanga, i whakaputua ai ngā whakauru angitu i āwhina ai i ngā kaihanga e kite ai i te tauwhāwhā me te kounga o te huinga. Hei tauira, i tata ki te kaihanga i ngā wāhanga motukā i whakaatu ai i te itinga o te wā huringa i te 20% i muri i te whakaaetanga ki te whakarere takotoranga, e whakaatu nei i te kaha o te aronga.
Ko te whiriwhiri i ngā tāpae he wāhi nui ki te whakapāho i ngā wā tapa whakauru. Ko ngā āhuatanga whakapaku a-roki o ngā pōrini e pa ana ki te horahia o te makariri me te roa katoa o te wa tahumaero. Hei tauira, ko ngā tāpae pērā i te polupuruhina me te ABS, e mōhiotia ana mō te whakapaku rahi a-roki, ka mutu pea i ngā wā iti ake i ngā tāpae pērā i te nylon, e hiahiatia ai pea ngā wā makariri roa ake. Kātahi ka whakaatu tētahi tātaritanga ōweoweko he rerekē pea te wā tahumaero e 40% kia māmā noa te tikanga o ngā tāpae whakamahia, e toa ana te whanonga o te whiriwhiri i ngā tāpae pai. Mā te tīariari i te pōrini tika, kātahi ka whakapai ake i te mahi whakangao, engari ko te utu hoki e herea ana ki ngā wā roa ake o te tahumaero i te wā tonu o ngā keehi pōrini.
Ko te whakamaumahara i ngā tūhono o ngā taputapu he mea matua hei whakanui ake i te kaha o te mōhiotia ki te whakaputa i ngā papanga. Ko te whakatakoto i ngā āhuatanga matua pērā i te roa, te pēhi, me ngā wā hura kai muri ka aronga ai ki te whakapai ake i te wā o te mōhiotia. Hei painga anō hoki te whakauru i ngā āhuatanga nei kia kotahi hei whakapai ake i te mahi. Ko ngā tikanga pai ko te whakamātao haere i ngā taputapu me te whirihau i ngā tautuhinga kia rite ki ngā whakaritenga o ngā kai me te hoahoa hua. Kua whakaaturia e ngā tauira mōrahi he iti ake te wā o te mōhiotia e 20%, arā pea he nui ake te kaha o te whakaputa me te iti ake ngā utu. Mā te aronga ki te whakamaumahara i ngā tūhono o ngā taputapu, ka taea e ngā kaihanga te eke huarahi, te whakaiti i te roa o te mōhiotia, me te whakanui i te kaha o te mahi.
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