He putea noa te putea PE i roto i tō tātou oranga o ia rā, e whakamahia ana mō ngā momo takai huarākau me huawhenua katoa, ngā putea hokohoko, ngā takai hua ahuwhenua, me ētahi atu. He uaua ake te hanga i tētahi putea kiriata kirihou māmā noa iho. Ko te tukanga hanga putea PE kei roto ko ngā matūriki kirihou - te whakaranu i te whakarewanga wera - te totoro i te extrusion - te maimoatanga hiko -; ko te putea PE te nuinga o ngā tukanga kua whakahuatia ake nei, ā, kua whakangawaritia i muri i ngā tukanga e toru: te pupuhi kiriata ------ tā ------ hanga putea.
Me aro atu ki te aha te tukanga tā putea PE?
He tino pai te polyethylene ki te ātete ki ngā pāmahana iti (tae atu ki te -70 ~ -100 te pāmahana whakamahi), he pumau te matū, he tino memeha te waikawa me te kawakore (me te kore e manawanui ki te waikawa waikura), kāore e rewa i roto i ngā whakarewa whānui i te pāmahana rūma, he iti te mimiti, he pai te mahi ārai hiko. Heoi, he tairongo te polyethylene ki te ahotea taiao (te mahi matū me te mahi miihini) ā, he ngoikore ki te koroheketanga wera. He rerekē ngā āhuatanga o te polyethylene i ia momo, ko te nuinga kei runga i te hanganga ngota me te mātotoru. Ka taea te whiwhi hua he rerekē ngā mātotoru (0.91-0.96 G/CM3) mā ngā tikanga whakaputa rerekē. Ka taea te tukatuka i te polyethylene mā ngā tikanga hanga thermoplastic noa (tirohia te tukatuka kirihou).
He aha ngā tuhipoka e pā ana ki te tukanga kei raro nei?
Me aro te tukanga pupuhi kiriata ki ngā āhuatanga e whai ake nei:
1. Te ōwehenga o ngā rauemi mata: kia rite ki ngā whakaritenga rerekē o ngā putea PE, ka whakaritea ngā ōwehenga rerekē o ngā rauemi mata. Hei tauira: te ārai-pūmau, te ārai-waikura, te whakaiti, te kawe hiko, te pirau koiora me ētahi atu whakaritenga, tāpirihia he momo tāpiri āwhina hei tauira: te whakamahi i te whero, te mangu, te tae me ētahi atu tae, tāpirihia he momo taupoki tae. Kia rite ki te māramatanga, te pakari, te kaha haehae, te tango korehau me ētahi atu whakaritenga, whakakapia he momo waitohu, he waitohu rānei o ngā rauemi PE. Hei tauira: kia rite ki ngā whakaritenga motuhake, kia whakanuia ngā whakaritenga o te māramatanga teitei, te haehae kaha, te tuwhera pai, kia rerekē ai te ōwehenga o ngā rauemi mata.
2. Ko te tukanga pupuhi kiriata tā, me tukatuka hiko, i tēnei wā me aro ki te kaha o te tukatuka hiko, kia mōhio ai he nui te kaha tukatuka hiko o te rauemi pahu PE (DAYIN) hei whakarite kia piri te waituhi.
3. i roto i te tukanga pupuhi kiriata, kia rite ki ngā whakaritenga motuhake o te kiriata, whakatuwheratanga kotahi, whakatuwheratanga rua, whakapiko, pakaru ira pēhanga, whakairo, whakawhānui me ētahi atu mahi.
Me aro te tukanga tā putea PE ki ngā mea e whai ake nei:
1. waituhi tā: waituhi wai, waituhi maroke tere, waituhi kore e kitea, waituhi huri-tae, waituhi ārai-tinihanga, waituhi whakapūmau, waituhi kawe, waituhi hiko iti, waituhi matte me ētahi atu āhuatanga waituhi he waituhi.
2. Pereti tā: e ai ki ngā whakaritenga pai o te ihirangi tā, ka whakamahia te tā gravure (pereti parahi) me te tā flexography (whakakē). E rua ngā tikanga tā rerekē.
3. Kōwhiria te tikanga tā e ai ki te uauatanga o te ihirangi tā me te uauatanga o te tae: tānga tae kotahi, tānga taha-rua kotahi, tānga tae taha-kotahi, tānga tae taha-rua.
4. E ai ki ngā whakaritenga motuhake o ngā tauira tā, e ai ki ngā āhuatanga o te tae-kore, te ārai-tinihanga, te kawe hiko, ngā piripiri me ērā atu, whiriwhiria he waituhi rerekē, he tāpiringa rānei.
Wā tuku: Maehe-03-2022
