Whakarāpopototanga: Ki te hiahia koe ki te hanga i tētahi tukanga matū kore-whakarewa mā te whakamahi tonu, he mea nui kia tika te whiriwhiri i te piripiri hiato. Ka whakamāramahia e tēnei tuhinga me pēhea te whiriwhiri i te piripiri hiato kore-whakarewa tino pai mō ngā papa me ngā hanganga hiato.
I te pakari me te rongonui haere o te hangarau hiato kore-whakarewa, ka nui haere ngā papa kiriata angiangi ka taea te whakamahi mō te hiato kore-whakarewa. Hei whakamahi pumau i te hangarau hiato kore-whakarewa, he mea nui te whiriwhiri i te piripiri hiato tika. Kei raro nei, i runga i ngā wheako o te kaituhi, ka whakamāramahia e mātou me pēhea te whiriwhiri i te piripiri kore-whakarewa e tika ana.
I tēnei wā, kei te noho tahi te whakapiringa maroke me te whakapiringa kore-whakarewa. Nō reira, hei whakau i te whakamahinga o te hangarau whakapiringa kore-whakarewa, ko te mea tuatahi ko te mārama ki te hanganga hua o te wheketere takai, te whakarōpū i te hanganga hua me te taipitopito, te whakarōpū i ngā hanganga hua ka taea te whakamahi mō te whakapiringa kore-whakarewa, kātahi ka whiriwhiri i te piripiri kore-whakarewa e tika ana. Nō reira, me pēhea te whiriwhiri whai hua i ngā piripiri kore-whakarewa? Tātaitia tētahi i muri i tētahi mai i ngā āhuatanga e whai ake nei.
- kaha piri
Nā te uaua me te kanorau o ngā rauemi tākai, he rerekē rawa te maimoatanga mata o ngā papa. He rerekē anō hoki ngā āhuatanga o ngā rauemi tākai ngāwari noa, pērā i te PE, BOPP, PET, PA, CPP, VMPET, VMCPP, me ētahi atu. Tērā anō hoki ētahi rauemi kāore i te whakamahia whānuitia i roto i ngā tākai ngāwari, pērā i te PS, PVC, EVA, PT, PC, pepa, me ētahi atu. Nō reira, ko te piripiri kore-whakarewa e whiriwhiria ana e ngā umanga me piri pai ki te nuinga o ngā rauemi tākai ngāwari.
- Ātete pāmahana
E rua ngā āhuatanga o te ātete pāmahana. Ko tētahi ko te ātete pāmahana teitei. I tēnei wā, he maha ngā kai me whakahoromata i te pāmahana teitei, ko ētahi ka whakahoromatahia i te 80-100° C, ko ētahi ka whakahoromatatia i te 100-135° C. He rerekē te wā whakahoromata, ko ētahi e 10-20 meneti te roa, ko ētahi e 40 meneti te roa. Ko ētahi ka whakahoromatatia tonutia ki te ethylene oxide. He rerekē ngā tikanga whakahoromata o ia rauemi. Engari me tutuki i te piripiri kore-whakarewa kua tīpakohia ēnei whakaritenga pāmahana teitei. Kāore e taea e te putea te wehewehe, te whakapē rānei i muri i te pāmahana teitei. Hei tāpiri, ko te rauemi kua whakahoromatatia ki te piripiri kore-whakarewa me tu atu ki ngā pāmahana teitei o te 200° C, tae atu rānei ki te 350° C tonu. Ki te kore e taea tēnei, ka ngāwari te hiri wera o te putea ki te wehewehe.
Ko te tuarua ko te ātete pāmahana iti, e mōhiotia ana ko te ātete hukapapa. He maha ngā rauemi takai ngohengohe kei roto ngā kai tio, e hiahiatia ana he piripiri kore-whakarewa kia taea ai te tu atu i ngā pāmahana iti. I ngā pāmahana iti, ko ngā rauemi i whakapakeketia e ngā piripiri ka ngāwari ki te whakapakeke, ki te pakarukaru, ki te wehewehe, ki te pakaru hoki. Mena ka puta ēnei āhuatanga, he tohu tēnei kāore e taea e ngā piripiri kua tohua te tu atu i ngā pāmahana iti.
Nō reira, i te wā e whiriwhiri ana i ngā piripiri kore-whakarewa, me mārama me te whakamātautau hōhonu i te ātete pāmahana.
3. Hauora me te Haumaru
Me pai te akuaku me te haumaru o ngā piripiri kore-whakarewa e whakamahia ana i roto i ngā takai kai me ngā rongoā. He tino pakari ngā ture kei ngā whenua maha o te ao. E whakarōpūtia ana e te US FDA ngā piripiri e whakamahia ana i roto i ngā rauemi takai hiato mō te kai me ngā rongoā hei tāpiri, e whakawhāiti ana i ngā rauemi mata e whakamahia ana hei hanga piripiri, ā, e aukati ana i te whakamahinga o ngā matū kāore i roto i te rārangi rauemi mata kua whakaaetia. Ā, ko ngā rauemi hiato i hangaia me tēnei piripiri kua whakarōpūtia, ā, kua whakawhāitihia hoki te awhe pāmahana tono, tae atu ki te whakamahinga pāmahana rūma, te whakamahinga patu huakita kohua, te whakamahinga whakahoromata korohū 122°C, te whakamahinga whakahoromata korohū pāmahana teitei 135°C me runga ake rānei. I taua wā anō, kua whakaritea hoki ngā tūemi tirotiro, ngā tikanga whakamātautau, me ngā tohu hangarau mō ngā rauemi takai. Kei roto hoki i te paerewa GB9685 a Haina ngā whakaritenga me ngā here e tika ana. Nō reira, me tutuki ngā piripiri kore-whakarewa e whakamahia ana mō ngā hua kaweake hokohoko ke ki ngā ture ā-rohe.
4. Te whakatutuki i ngā hiahia o ngā tono motuhake
Nā te whānui o te whakamahinga o ngā rauemi kore-whakarewa i roto i te ao o ngā takai ngāwari kua horapa atu ki ngā ao e pā ana. I tēnei wā, kei reira ētahi wāhanga motuhake kua whakamahia ai:
4.1 Tākai pepa PET hiato kore-whakarewa
Ko te nuinga o ngā rau PET he mea hanga ki ngā rauemi PET, he matotoru 0.4mm, neke atu rānei. Nā te matotoru me te pakari o tēnei rauemi, me whiriwhiri he piripiri kore-whakarewa, he nui te piri me te matotoru o te tīmatanga hei hanga i tēnei rauemi. Ko te hua kua oti te hanga mai i tēnei momo rauemi hiato me hanga ki ngā momo āhua rerekē, ko ētahi me tā, nō reira he teitei hoki ngā whakaritenga mō te kaha kiri. Ko te WD8966 i hangaia e Kangda New Materials he teitei te piri me te ātete ki te tā, ā, kua angitu te whakamahi i roto i te hiato rau PET.
4.2 Tākai papanga kore-whatu hiato kore-whakarewa
He whānuitia te whakamahinga o ngā papanga kore-whatu, ā, he maha ngā momo. Ko te whakamahinga o ngā papanga kore-whatu i roto i ngā taiao kore-whakarewa, e whakawhirinaki ana ki te matotoru o te papanga kore-whatu me te mātotoru o ngā muka. I te taha whakataurite, ko te mātotoru o te papanga kore-whatu, ko te pai ake o te hiato kore-whakarewa. I tēnei wā, ko te piripiri rewa wera polyurethane kotahi-wāhanga te nuinga o te wā e whakamahia ana mō ngā papanga kore-whatu hiato kore-whakarewa.
Wā tuku: Hakihea-12-2023