Hangarau Mate Whakaputa Motuhake mō te PLA Kore-Whatu Pirau-koiora e Whakatau ana i ngā Pakaru Rewa me ngā Koha Kakahu Kāore i te Taurite

Ahakoa te ia o te ao mō te kore waro, kua kitea te pikinga o te tono mō ngā takai, ngā rauemi akuaku me ngā rauemi hauora i roto i ngā papanga kore-whatu pirau PLA. Heoi, ko ngā āhuatanga rheological motuhake o te PLA e mau tonu ana ngā wero whakaputa: te pakaru pinepine o te rewa i te wā e miro ana, te koretake o te matotoru o te papanga, te iti o te hua kua oti me te nui o ngā para. Ko ā mātou raina mate extrusion ritenga motuhake mō te PLA kore-whatu e whakaoti ana i ēnei arai hangarau matua e rua, kua whakamanahia e ngā kaupapa whakaputa papanga koiora maha puta noa i Uropi me te Tonga-Rawhiti o Āhia.

Ko ngā mate tuku iho he mea hanga mō ngā rauemi mata PP, kāore e rite ki te matapihi pāmahana tukatuka pumau whaiti a te PLA me te aro nui ki te matotoru rewa. Ko te iti o te pēhanga i roto i ngā awa rere ka puta tika te pakaru o te miro i te wā e hurihuri tere ana. Ka whakamahia e tā mātou mate motuhake PLA te hoahoa whakaata awa rere whakairi-koti kua arotauhia mā te tātari huānga mutunga wai, ka whakataurite i te pēhanga rewa me te tohatoha pāmahana kia ōrite puta noa i te whānui katoa o te ngutu mate, ka whakakore i te kohikohi rauemi ā-rohe me ngā rohe mate e puta ai ngā miro pakaru. He hanganga whakakī aunoa waipēhi-whā-ara, ka taea e te mate te whakakapi mata tonu me te kore e aukati i te raina katoa, ka tapahia te wā kore pakaru o te miro neke atu i te 80%.

Ko te matotoru papanga kāore i te ōrite, tētahi atu hapa nui o te hanga PLA, i ahu mai i te putanga rewa koretake i te whānui o te mate. Ka whakauruhia e te mate hou ngā tīwiri ngutu mate ngāwari ka taea te whakarite moroiti me te miihini whakauru CNC tino tika, e whakahaere ana i te manawanui matotoru i roto i te ±3% puta noa i te whānui katoa o te papanga, he pai ake i te hapa ±8% o ngā mate paerewa. Ka roa ake te ora o te mate e te maitai koranu ātete-waikura pāmahana teitei mā te 40% i raro i te pa rewa PLA mō te wā roa, ka whakaiti i ngā huringa oro me te tiaki pinepine.

Ka rite te mati ki ngā raina whakaputa PLA spunbond, meltblown me te hiato whānui, e tautoko ana i ngā putea kore-whatu pirau-katoa, ngā tauera whakakorekore me ngā rauemi turanga tiaki hauora. Ka tino whakapiki ake i te hua hua kua oti ki runga ake i te 97% me te tapahi i ngā para rauemi mata neke atu i te 22% mō ngā kaihanga pirau-katoa.