He aha te tinta flexo e tika ana mō te whakaprint i te tere mo te pakihi parakiru?

Ngā Āhua Marino Marino Me Tōna Pānga Ki Te Taupanga Flexo Tere

Kei te pēhea te marino o ngā Tinta Flexo mā te Wai ā-Kaha ki te Whai i ngā Tere Tere Tāone

Mō ērā e mahi ana ki te whakapakanga papaku tere, ko ngā inki tōrau māmā inaianei te mea e nui ana te whakamahi i te mea ka maroke tāwhai. Kei roto i ēnei inki ngā kaiwhakaputua e iti ana te wātai rātou ko te etanōli, te akitōni rānei. Ko te tikanga ka ngaro i te wā e hau teka ana ki te 40 ki te 60 tāmiti Celsius, ka waiho i ngā whakaahua kua panuihia ki runga i ngā kiriata polietilēni i te hawhe hoki tāmi. Ko te tere o te maroke kia mārama ai kia taea e ngā kaiwhakaputa te haere ki ngā tere whakapākehātanga e 1000 kēkē i te meneti kaore he whirinakitanga mō ngā panui kua pakaru. Ā, ko tēnei he mea nui rawa ki ngā whakatinanaga pakanga kua whakaritea i ngā rārangi hui e hiahiatia ana kia neke tonu te neke mai i te tīmatanga ki te mutunga.

UV-Curable me ngā Inki Flexo LED-Cured: Te Whakapai Tūturu mō te Panui Tonu

Kua whakakaha ngā inki UV curable i ngā wā whakamātau mōhio ki te pānga ki tētahi tikanga e mōhiotia ana ko te photopolymerization. Ko ngā inki nei ka whakamātau tika i raro i te 0.1 hēkona i te wā e pakaru ana i te whakamātautau UV kei waenganui 300 ki te 400 nanometers. Ko ngā putanga LED hōu ake he tino pai ake hoki ki te whakamahi i te hiko, e iti iho ana i te hiko e 85% tata ki ngā kōpae hurihuri mātātā ona hurihuri ai i mua. Ko ngā whakapai ake i ngā LED arrays kua whakakaha i te āheitanga ki te whakahaere i ngā roopu motuhake i te wā o te whakamātau. Kātahi ka tūhono tēnei ki te pupuri i ngā taputapu, he mea nui tēnei mō ngā kiriata whakaae maha. Anō hoki ka taea e ngā kaihanga te whakahaere i ā rātou rārangi ki ngā tere whakapī kua eke ki te 1500 feet ia meneti kia kaua e whara.

Ngā Tikanga Whakamātau ki runga i ngā Kiriata Kore-porohia: Whakaputanga, Whakauru, me te Whakamātau Iriiria

Kei te whakamahi ngā pōnaha flexo hōu i tētahi tikanga takitahi hei whakamātau i ngā inki ki runga i ngā papanga kore-porohia:

1. Whakaputanga : Hau makariri kaha (80–120°C) e whakakorea ai ngā tōtika mata
2. Whakawhanaketanga : Mātua whakauru hoki ngā kiriata ki te pātata ki te tukatuka inu mā te whakamahi i ngā rino motuhake
3. Whakapānga : Ko ngā punaha UV/EB e hāpai i ngā kiriata tūturu korekau he wera

Kei te aukati tēnei kōaro i te whakaputanga inu me te whakapono ki te tōtika i waenganui i ngā tāpoi pērā i te BOPP me te PET.

Te whai pai i te Kōwhiringa Horutia mō te Whakamātutu Āhua me te Whaitua Whaitua

Ko ngā kaitā te pāwhiri i ngā horutia mā runga i te āhua whakamātutu, ngā whakaputanga, me te aronga ki te wera:

Ko ngā kauta azeotropic kua whakaratohia ka whakamaroke i te 40% tere ake me te 30% iti ake ngā whakaputanga i ngā rāwekenga kotahi, ka whakapai ake i te mahi me te aronga ki te taiao.

Ngā Inka Flexo Whai Tikanga: Ngā Tōaitanga o te Tere Whakamaroke me te Whakawhanaketanga

Kua pakaru ake ngā inki mā runga wai i ngā whakaputanga VOC ki te tata ki te 85%, he pai hoki tēnei ki te taiao. Heoi anō, kāore ngā inki nei i te maru tere no te mea he nui rawa te kaha o te wai hei whakaputangia. Ko te wā e maru ai tēnei he tawhātanga mai i te 1.2 ki te 2 hēkona. Engari, kei te tū mai ana ētahi hua hou e mōhiotia ana hei hangarau nanoemulsion e whakarerekē ai i ngā mea. I ētahi tāpari tuatahi i whakaatu mai ai kua maru ētahi inki mā runga wai i te 0.8 hēkona anake ki ngā mata o LDPE ina kawea ki te 90 wāhi Celsius. He whakapāhunu tēnei, āe? Heoi anō, kei te tango mai tēnei tikanga hou i te 15 ki te 20% atu i te utu kaha i ngā tikanga tawhito ake. Heoi anō, kei te hiahia ngā kaihanga maha ki te utu i te nui ake mō ngā painga taiao.

Whakapiringa Kaha ki ngā Papanga Plastics Iti Kaiwhakaputa

Whakawātea i ngā Wero Kaiwhakaputa o ngā Papanga Polyolefins me PET

Ko ngā Polyolefins pērā i te PE me te PP he kaha ki te raro i te 34 dynes/cm², e here ana i te inu inu. Ko ngā inu inu hou ka whakawhitinga i tēnei ka whakamahi i ngā rāpoi pōkai me ngā taumahatanga ka whakaiti i te kaha o te takotoranga. Mō te PET, ko ngā kaiwhakangungu ester ka whakapai i te mata, ka whakatairanga i te takotoranga tātai ki ngā tere e 600 fpm.

Ngā Rautaki Whakarite Rāpoi mō te Whakapai ake i te Kaha o te Flexo Ink

Kei te pā ana ngā rāpoi Acrylic me te nitrocellulose mō te tōtika o te kaha me te whakahaerenga. Ko ngā pūnaha pūrua e whakakotahi ana i ngā panoni polyurethane me ngā polyolefins kua kiriata kua whakaatu i te whakapai ake o te 42% i te kaha peeling ki te polypropylene kāore i te raweke. Ko ngā āhuatanga matua ko:

• Te mōhio o te mōhio (Tg) e tō ana ki te kaha o te pāpaku
• Te roa molekua kua whakaritea hei whakauru ki te takotoranga
• Ko ngā tūāpapa e āwhina ai i te hononga covalent ki ngā mata kua rawekea

Whakaritenga Mata me ngā Kaiwhakanao Kaha ki te Whakapakanga i te Whakapakanga Kauta

Ina tāia te tāone ake ki te 10 ki te 12 kilowatt ia mita tapawhā, ka whakakaha ake i ngā taumata kaha o ngā kiriata polypropylene hōu ake i te 45 dynes ia mita tapawhā. Ki te pai ake te whakakaha, ko ngā kaiwhakakaha hoki hoki he paku rawa atu. Ko ēnei e whai ana i ngā mea pērā i ngā polymer kaihau, i ngā silanes rānei, e whakakaha ana tino ki ngā mea PET kua whakamahia kua whakaurua ngā kaiwhakarewa. Ko te kāinga hoki he whakapai ake i ngā wā kua pahure ake nei me ngā kaihāngai pāpaku e hangaia ana i te lignin kua whakarereke. Kei te tū katoa rātou ki ngā kōwhiringa hinu tawhito mō te kaha o te hononga, e whai hua ana rātou hei kōwhiringa whaihua mō ngā kamupene e mahi ana ki ngā rautaki whakauru whirinakitanga ā-ahurea.

Te Whakaritenga a Corona me te Plasma: Te Whakarite i ngā Paparorohiko hei Whakapai i te Hononga Inu Flexo

Ko te atamira paraikete e whai ana i ngā molekau pāpaku penei i te ozōni, me ngā oksīti nitrogene e taea ai e ngā paparangi polimer te huringa i te mātāpuna inu, kia mātāpuna katoa te whakakaha. Ina tāpirihia te 500 ki te 750 joule ki te mita tapawhā, ka hinga te kaha o te polietilene iti ki te 31 dynes ki te centimita, ka eke ki te 58 dynes cm. Ko te tikanga o te ASTM D5264 e whakamātau ana i te kaha o te inu e toru te wā nui ake. He mea whakamāria. Ko te mea hoki kia pai ake ko te aronga ki ngā raina whakaputa e haere ana ki te 1200 ōkawa ina hāngai ana i te tukatuka tātai. Kāore he hinga kaha ki te hua pai.

Te Whakahaere Whakapiringa me te Whakapiringa Rereke ki te Whakapai Inu

Ngā rohe whakapiringa tino pai mō ngā inu pāpara me ngā inu UV flexo

Kei te pai rawa ngā inka whakarewa papaku e whakahaere ana i te 30–70 poise, i te wā e whakahaere ana ngā whakarōpū UV-curable ki roto i te 50–150 poise kia tōtika ai te rere me te whakapai. Ko te whakahaere tere tāwhai (± 5 poise) e iti ai te whakapai ake i ngā takotoranga halftone me te whakapumau i te tōtika o te tae. Ko ngā rheometer matua e ine ana i te kaha o te whakakaha ki ngā tere e whai pānga ana ki te whakaputa (100–500 s⁻¹), e whakatōtika ana i ngā hua o te wāhi ako ki ngā tikanga pani o te ao mōhio.

Te whakapai ai i te mātā me tana tūranga ki te tuku inka anilox ki te tere nui

Ko ngā inki Flexo kei te wā o nāianei he āhua whai hua te whai anō hua ko te thixotropy i āwhina ai i te kaha o te inu e heke i waenganui i te 30 ki te 60% ina pāngia ki ngā kaha tāpoko kaha (kei te tata ki te 3,000 ki te 5,000 te hui tāpoi) mai i ngā rōpere anilox. Ko te mea pai ko te āhua tere ki te hokia mai i muri i taua, ā, ko tēnā ka aukati i te inki kia kaua e pakaru. Ko te putanga? He pai ake te whakahaere i te inki ki roto i ngā kāri 1200 LPI. Kei te kōrero mātou mo ngā kiriata inki e hangaia ana i raro i te 4 microns te rahi, he mea nui tēnā ki te kounga o te whakaprint. Ā, ākene hoki ki ngā tere kaha e neke ake i te 600 ōrau kia miniti, kei te herea ngā inki i ngā raru misting e āwheru ana i ētahi atu pūnaha. Ki te tiro ki ngā tau o te ahumoni, ko ngā kamupene e whakamahi inki inaianei e whakatairite inu rapu ana i te heke o te 18% i ngā wā katoa i runga i te mahi pai ki te tuku i ngā tikanga whakaprint rereke.

He iti noa ngā here o te rahi o te kiri inki i ngā pōturi narrow-web flexo o nāianei

Ko ngā kaihuri narrow-web e whai ana i ngā kiriata tinta 1.2–2.8 µm kia eke ake i te 95% te opaqueness ki te OPP kāore i te here. Ko ngā tinta ki te whakahaere i te viscoelasticity (tan δ = 0.3–0.7) e mahi tūhono ana ki ngā rōpere anilox 2–3 BCM, e iti ake ana i te whakamahinga tinta 22–35% mō te whakauru tāone.

Ngā punaha aroturuki inihua ake hei whakapumau i te tere o te whanaketanga

Ko ngā tapawhā inihua tūmatanui me te tika o ±0.5 poise ka whirihau ā-whakarewa i ngā ōrau kaiwhakangungu i te wā o ngā rere, e whakapono ana i te rere o te tāone ki te ±3% o te whāinga. Ko ngā punaha tūhono e tohu ana i ngā whakarahi ina eke ake te recovery thixotropic i te 45 hēkona - tētahi whakatupato tuatahi mō ngā ngoikera o te whakaprinti i ngā wheronga e eke ake ana i te 400 mita i te meneti.

Te whakapaukara me te whai i ngā tikanga i roto i ngā tono pakonga whaihua

Me whakamātau ngā tinta flexo hou i te whakapā ki te hinengaro me te whai i ngā tāone haumaru, katoa i te wā kotahi ka tuku i ngā whakaahua rerehua. Ko ngā kaihuri e mōhiotia ana he uaua te whakapaukara tae atu ki te whakawhanake, me te whai i ngā tikanga o te ao.

Ngā Kaha ki te Whetekanga, Te Mātāpuna, me te Whakapākanga Waka i ngā Kiriata Hōu

Ko ngā inka whakarewa performance te nui ka whakamahi i ngā kōpiko whakarewa kia tū ai te whakakaha i te wā e whakarewa ana, e eke ana i te 90% te whetekanga whetekanga i ngā whakamātau ASTM D5264. Ko ngā inka UV-huamua ka hanga i ngā whakapiringa huinga e whakarato ai i ngā aukati wai i raro i te 0.5 g/m²/rā WVTR—he mea matua hei whakamaru i ngā taonga kai.

UV Flexo Inks Moana-Migration mō te Whakakī Kai me te Whakakī Rongoā

Ko ngā punaha photoinitiator anō kei te heke i ngā monomer e toe ana ki te iti ake i te 0.01 ppm, e whakaae ana ki ngā rerekētanga a FDA 2023 mō te whakapā kai tuarua. Ko ngā hangarau mātua-tapawhā ka tuku i ngā takunetanga 100% te kaha, e whakakore ana i ngā toe kuaotia engari e tū ana i te iti noa o ngā takotoranga inka i raro i te 2 μm.

Te Ora i ngā Tīwittanga Whakahaere Tiriti Kei te Whakatau i te Kaha o te Whakapā

Ko ngā whakahoutanga o EU MDR kei te hiahiatia i ngā wā katoa ngā tautohenga tōtika e whakatau mō te nuinga i te 1,600 ngota, ka hāpai i te whakapono ki ngā tūhononga o ngā inka. Ko ngā punaha whakakotahi tae e whakauru ana i ngā pātengia herehere e whakapono i te tika o Pantone i te wā e āki ai i ngā tae kua herea pērā i te CI Pigment Violet 23.

Te Whakatōwhera Kaha ki te Whai Tikanga Me ngā Mea Whakarewa

Ko ngā inka whakapaparorohiko e whakapakari i te mahi me te whai tikanga trūwhitanga:

• Ko ngā acrylate mā runga wai e iti ake i te 5% te ihirangi VOC
• Ngā kimi heke kua whakaurua kia taea ai te 85% PET whakarewa
• Ko ngā pātītī hou e whakauru ana i te 98% te here i muri i te ono marama o te pakeke

Ko ēnei whakapai ake ka āwhina i ngā kaihuri e eke atu ki ngā taumata whakarewa EPREL kaua ko te whakapai ake i te āhua o te kaihoko - he mea tino nui ina 78% o ngā kaihoko e whai whakaaro ana ki te whakarewa i te wā e hoko ana (GreenPackage 2023).

FAQ

He aha ngā inka flexo mā runga kaiwhakarewa?

Ko ngā inka tōka tōka eke ana i ngā kaiwhakangao penei i te etanōli hei tau māmā te kaiwhakangao, ā, ka pāwhara tōrā anō ina kua whakakaha te kaiwhakangao. E āwhina ana i te maranga marino me te pehanga tere.

Me pēhea e rerekē ai ngā inka UV-curable mai i ngā inka tuku iho?

Ka pā atu ngā inka UV-curable ki te whakapiripiri inu ina eke ki te mārama UV, e āwhina ana i a rātou kia tūturu. E tuku ana i ngā whiringa pehanga e whai mana ana, ā, he whirihau hoki mō te whakamahi ki runga i ngā papanga rereke.

He aha te tūwāhi o ngā treamenta mata ki te pehanga tōka?

Ngā treamenta mata, pērā i ngā treamenta corona me te treamenta plasma, e whakarerekē ana i ngā mata polymer kia pai ake ai te hōhonu o ngā inka tōka. Ka pai ake te hōhonu me te kounga o te pehanga, ina heke te kaha o te mata o te papanga.

He aha te nuinga o te whakahaere i te kaha ki te pehanga tōka?

Ko te whakahaere i te kaha he mea matua ki te pehanga tōka kia tūturu ai te neke o te inka, kia iti ai te whakapai ake o ngā pātuki, kia tūturu ai te tae. E āwhina ana i te kounga pehanga pai rawa ki ngā tere tere.

He aha ngā painga aronuku o ngā inki mā te wai?

Ko ngā inki mā te wai e iti tērā i ngā whakaputanga VOC, nō reira ko ngā kōwhiringa aronuku tātou. Ko ngā whaiwhai hou pērā i te hangarau nanoemulsion e tere ake ai te rere wai i te wā e mau tonu ai te whakawhitinga.