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Te Whakaaetanga Inka Tūāpapa Māriri Kai mō ngā Copa Paparanga
Te Tutuki i te FDA 21 CFR me te Ture Piriti EU mō te Whakapā atu Tūmatanui ki te Kai
Mō ngā kaihanga ipu pukapuka, he mea nui te tika o ngā inka whakapaipai, nā te mea me āhua tikangia ngā ture hauora kai. I roto i Te Aho Peirihana, kei te ture e ki ana ko FDA 21 CFR Part 175.300 e pā ana ki ngā mea e pā ana ki te kai. Ko te tikanga, me iti ake i ētahi wāhi ina pā ana ki ngā kai paraihe, pērā i ngā karaihe paraihe, ā, rānei ki ngā inu wai. Kāore he rerekē rawa te āhuatanga ki Ūropi. Ko te Ture Pāriha EU No 10/2011 e whakaratohia ana i ngā here whakamāmā mo te rahinga o ngā mea e nekehia ana mai i te taraka ki ngā hua kai. Hei tauira ko ngā kaiwhakaara ara – e herea ana ki te 0.01 mg ia kg e ai ki ngā whakamātautau i mahia ai i ngā tikanga e rite ana ki ngā āhuatanga whakamahinga pono pērā i ngā inu wera i waenganui i te 60 ki te 90 degrees Celsius tāpiripiri hoki te roanga o te wā kura. Mēnā kāore te inka i āhua tikangia, ka rere ai ngā kimikime ārai i runga ake i te 10 wāhitau i ia piriona, ā, ko te mutunga pea, ka tīmata ngā mahi ki ngā kamupene, tāpirihia pea ka whakawātea i rātou te hua. Ka whakahaere ngā kaihanga mātau i ā rātou matū i ngā whakamātautau GC-MS i mua kia āhua tika katoa, ka arataki hoki i ngā tohutohu mai i ngā mana hauora kai o Amerika me Ūropi e pā ana ki ngā tikanga tātai tika.
Whakataunga Tūponotanga Migrātahi vs. Te Whakaiti i te VOC i te Tauira Parera Tere-Whaitua Rawa
Ko ngā whakangao panui i te tauira nui me whai mātātoko ki ētahi raru e rua: kia āki ai ngā huinga kimikara kia kaua e neke, me te pupuri i ngā huinga kimikara pōturi (VOCs) kia kaua e piki ake. Ka pēra rawa te raru ina tīmata ana te panui whakapakari tere (flexographic) i runga ake i te 300 mita i roto i te meneti, nā te mea mēnā kāore ngā mea katoa e whakapūmau tino, ka wātea tonu ētahi hua whakarewa pērā i ngā oligomer me ngā photoinitiators e noho ana anake e tatari ana kia rere atu. Ko ngā tinta UV e iti ake ai ngā VOCs ki waenganui i te 60 ki te 70 ōrau tērā i ngā kōwhiringa tinta tuanui e horo ana, engari me ngā wāhi tino tohu o te hiko LED, aronga ki te 800 millijoules i runga i te cm², i teitei ake rānei kia eke ki te 95 ōrau, pea, te polymerization kia kaua anō ai ngā mea e rere ana. Ko ngā punaha e horo ana ki te wai kāore he raru rere haere, ā, ka wehe tōnu i ngā ngoikera VOCs, engari he rerekē tōna āhuatanga nā te roa ake te wā e horo ai, arā, ka taea anake e ngā rārangi huringa te rapu tere o te 250 mita i te meneti, ā, ko ngā taipitopito anuanu hoki e kino ake ai. Ko te tinihanga o te tika he kite i te wāhi pai i waenganui i ētahi take matua e toru: te pono o te whakapūmautanga o ngā rauemi, te pupuri i ngā lepel VOCs i raro i te 25 grama i runga i te mitamita tapawhā, me te tiaki kia noho haumaru te rere haere, he haurua anake i te whakaritenga e mana ana. Inaianei, ko te nuinga o ngā toihanga panui nui e horoi ana i ngā spectrophotometer tārā, tahi ana me ngā tinta reka e iti ana te rere haere e ū ana ki ngā paerewa FDA 21 CFR, me ngā here o Te Tōpuni Piritania i raro i te 10/2011 hei wāhanga o tō rātou tikanga mahi.
Whanaketanga Tinta Flexo ā-Pūtau ki ngā Tahumaero Kōpae
Nga Papahiko Piri, Kāore i te Piri, PE-Laminated, me ngā Papahiko PLA-Piri: Te Huinga, Te Piri, me te Whanaketanga Pūpara
Ko ngā īngoa o te pereka kōpae pepa he take nui ki te mahi a ngā tinta māmā i ngā whakangao panui. Ina mahi ana me ngā pepa kore-kākahu, ka hū ana ki te tinta tino marino, nō reira me whakamahi ngā kaimātai i ngā tinta tino iti te uaua, e tere ana te tautotongia kia kaua ai te maroke tōna wā, kia kati ai ngā parirau i ngā wāhi rahi. Kāore ngā pepa kākahu e hū ana i te nui, engari he wāhanga atu tēnei e here ana i te aronga ki te whakahaere i ngā āhuatanga o te rere o te tinta kia kaua ai te tae e wehe ana, kia kotahi ai te nekehanga o te kapa ki runga ki ngā mata panui. Ko ngā pepa kua paopaoia ki te polyethylene te nuinga o te wā e whiriwhiria ana hei pupuri i ngā wai, engari me mātai te kaha o te mata kia pai ai te herehere. Ko ngā whakamātautau e whakaatu ana ina piki ake te kaha o te mata o ēnei papamuri ki runga ake i te 38 dynes per centimita, e hāngai ana te mātauranga corona, ka piki ake te manawaroa ki te wehenga umanga mai i te 40%. He painga taiao ngā pepa kua paopaoia ki te PLA engari he raru hoki mō te kounga o te panui. Ko ō rātou mata e pehi ana i te wai ka pāngia te kirihiko e 15% ake i te PE tikanga i te 150 ngā raina i ngā inchi, arā ko te huringa i ngā rama anilox me te tautohe i te tinta e hiahiatia ana. Ko te mea nui rawa, e whakaatu ana ngā whakamātautau māruria, ehara i te mea kei roto i te tinta anake, engari ko te āhua o te mahi tahi ki te papamuri e panuitia ana, e tohu nei he aha te take o te whakamātautau whānui o te punaha katoa tae atu ki ngā matapae, ngā tinta, me ngā tikanga tukatuka hei whakaiti i ngā mōrearea mōrearea.
Te Rerehua o te Tinta Flexo me te Pūmahara o te Tikanga mō te Whanaketanga Katoa
Te Whakapai ake i te Viscosity, te Whanonga Shear-Thinning, me te Pūmahara o te Fountain ki te 120–180 LPI
He nui te take o te tika o te rheology ina hāngia ana ngā ipu pepai mō te pauna. Ina mahi ana i te pae o te 120 ki te 180 ngā raina ia inihi, me noho tonu te tiova i roto i ētahi tauira kirīmeka kia kaua ai e raru ki ngā raru pērā i te whānuitanga o ngā tohu, engari anō hoki e hāngai ai i ngā ahua maamaa. Ko te whanonga o te tiova he wehe atu anō hoki i te parikara – arataki ka tino pakari ake pea ina takirua ana e ngā kōpae anilox e huri haere ana i te nekeneke o te 2500 anuanu ka hoki tūpono i muri i te tuku ki runga i te papanga. Ko tēnei momo whanonga e āwhina ana kia tukuna tika ai te tiova kia kaua ai e pupuhi, heke ranei. Ka nui ake te herekenga o te rahi o te kapa ina ka piki ake ngā mīhini ki te 150 mita ia meneti. Ko te pumau o te puna anō hoki he take nui rawa. Ko ngā tiova kounga pai me mōhio ki te noho i te wā roa i roto i ngā hororongo kia kaua ai e wehe ki ngā wāhanga rerekē, kia kaua ai hoki e hanga i ngā mapihikete e kore e hiahiatia – ēnei katoa ka paku ai te hinga o ngā mahi hāngai e hiahiatia ana kia mau tonu mō ngā miriona o ngā kauweka. Ki te titiro ki ngā raraunga o te ahumāra, ko ngā kamupene e whakapakari ana i ō rātou āhuatanga rheology e kitea ana e iti ake te whānuitanga o ngā tohu ki te 12% ki te 18% mā te whakarereke i ngā reanga Newtonian. Anō hoki, e roa ake ai te haerenga mua i te hiahia ki ngā wā tapa-tapahia, i etahi wā e roa ake ana te haerenga hāngai mā te 30%. Ka huri ēnei whakapai ake ki ngā hua pai ake, ā, ki ngā tae anuanu anuanu mō ngā kapuni nui o ngā hua hāngai.
Ngā Pūnaha Tinte Kōkiri Kōkori: Ngā Whakarahinga a UV-Curable ki te Mōhiotia e te Wai
Ko te whiriwhiri i te tinta mātāmira tika mō te hanga maha i ngā ipu pepa he mahi āhuatanga mō ngā kaihuri i waenganui i ngā kōwhiringa UV-curable me ngā rārangi wai hou. He aha te mea ka nui ake te whakapono ki ngā tintare UV? Ka maroke tonu rātou ina eke ana ki te arahi UV, arā ka taea e ngā pēhi te rere mai i te 30 ki te 40 ōrau tere ake tērā i ngā kōrero wai. Anō, ko ēnei tinta ka iti ake te whakamahi i te hiko pea ki te haurua, e ai ki ngā raraunga o te ahumahi. Ko te wā maroke tere anō hoki e āwhina ana i te whakahaere i ngā take pātata ki te 120 ki te 180 ngā raina ia inihi, ā, ka pupuri i te whakaritenga tuhituhi tika hoki i te wā roa o te whakangao. Engari kei te tino take he mea hei whakaaro. Ko te timatanga ki te hangarau UV e hiahiatia ana he utu nui i te timatanga mō ērā taputapu motuhake LED, pērā i ngā mīhini mercury vapor. Me kaua hoki te wareware ki ngā pepa: me whakamātau tino mātaihanga mō te whakawhitinga photoinitiator i ngā rautaki FDA (21 CFR Part 175.300) me ngā tikanga o te European Union (EU 10/2011). Kāore ēnei tirotiro whakaaetanga i te mahi iti.
Kāore ngā tioata hauauru e whakawhitinga VOC katoa ā, i te tikanga ka iti ake te utu ki te whakarerekē i ngā taputapu e wātea ana, nā reira ka tino pai mō ngā toihanga e mataara ana ki te kounga o te hau o roto me te tutuki i ngā paerewa EHS. Ahakoa kua whai te whakaeke hou o ngā tioata takitahi kua whai whakaekenga kimikime me ngā tere tere tere ake i ngā kowhiringa tuku iho, engari kei te tere tonu i te 15 ki te 20 miriona taua atu i ngā papahiko UV. Ka taea tēnei te whakarohe i ngā mea ina ngana kia eke ki aua whāinga rahi, pērā i te 20 mano ipu i ia haora, pea ranei. Ina comes to printing directly on food contact surfaces, he iti ake te tūpono o te nekenga o ngā tioata hauauru i te nuinga, āhuareka ina uru ana ki ngā rīhinā iti rawa atu i te nekenga, i ngā karaihe ā-piritia hoki. Heoi anō, kāore he mea māmā te kōwhiri i waenganui i ēnei kōwhiringa. Me titiro te toihanga ki ngā rahi o te whakangao i te pūmahara, ngā momo matapihi e piripono ana ratou ki te print, ngā ture e pā ana ki ō rātou mātāpuna, me te taumata o tō rātou whakapono ki ngā whāinga kaitiakitanga mua i te whakatau he aha e pai ana mō tō rātou take motuhake.
Wāhanga FAQ
He aha te whai mātai i te tinta flexo mō ngā ipu pepa?
Ko te whai mātai i te tinta flexo mō ngā ipu pepa he tiaki kia haumaru te tinta mō te whakapā atu ki te kai tīpako, mā te arataki i ngā tikanga pērā i te FDA 21 CFR me te Ture Pārihau EU.
Me pēhea e rerekē ai te tinta UV-curable mai i te tinta flexo huinga wai?
Ka maroke tūmatawhānui te tinta UV-curable ina eke ana te ao UV, ā, ka tere ake te takotoranga, engari ko te tinta huinga wai kāore e whakawhitinga VOC engari e roa ake te wā kia maroke.