Ishishini le-inki ye-UV litshintsha kakhulu ngenxa yokunyuka kwemigangatho yokusingqongileyo kunye nempilo. Enye indlela ephambili elawula imarike kukukhuthazwa kweendlela zokwenziwa kwe-“NVP-Free” kunye ne-“NVC-Free”. Kodwa kutheni kanye kanye abavelisi be-inki beshiya i-NVP kunye ne-NVC?
Ukuqonda i-NVP kunye ne-NVC
**I-NVP (i-N-vinyl-2-pyrrolidone)** sisinyibilikisi esiphendulayo esiqulethe i-nitrogen esinefomula yemolekyuli i-C₆H₉NO, enesingqi se-pyrrolidone esine-nitrogen. Ngenxa ye-viscosity yayo ephantsi (idla ngokunciphisa i-inki viscosity ukuya kwi-8–15 mPa·s) kunye ne-reactivity ephezulu, i-NVP isetyenzisiwe kakhulu kwiingubo ze-UV kunye nee-inki. Nangona kunjalo, ngokutsho kwe-BASF's Safety Data Sheets (SDS), i-NVP ihlelwe njenge-Carc. 2 (H351: i-carcinogen esolwayo), i-STOT RE 2 (H373: umonakalo we-organ), kunye ne-Acute Tox. 4 (ubuthi obuqatha). I-American Conference of Governmental Industrial Hygienists (ACGIH) inciphise kakhulu ukuvezwa emsebenzini kwixabiso lomda womda (TLV) we-0.05 ppm kuphela.
Ngokufanayo, i-**NVC (i-N-vinyl caprolactam)** isetyenziswa kakhulu kwii-inki ze-UV. Malunga nowama-2024, imithetho ye-CLP ye-European Union yanikezela ngeentlobo ezintsha zeengozi ze-H317 (ukuzwela ulusu) kunye ne-H372 (umonakalo welungu) kwi-NVC. Iifomyula ze-inki eziqulethe i-10 wt% okanye ngaphezulu ze-NVC kufuneka zibonise ngokucacileyo uphawu lwengozi ye-skull-and-crossbones, nto leyo eyenza kube nzima kakhulu ukwenziwa, ukuthuthwa, kunye nokufikelela kwimarike. Iimpawu ezidumileyo ezifana ne-NUtec kunye ne-swissQprint ngoku zibhengeza ngokucacileyo "ii-inki ze-UV ezingenayo i-NVC" kwiwebhusayithi zazo kunye nezixhobo zokukhuthaza ukugxininisa iziqinisekiso zazo ezinobuhlobo nokusingqongileyo.
Kutheni le nto "i-NVC-Free" ibizwa ngokuba yindawo yokuthengisa?
Kwiibrendi, ukusebenzisa "i-NVC-free" kuthetha ukuba kukho iingenelo ezininzi ezicacileyo:
* Ulwahlulo lweengozi ze-SDS oluncitshisiweyo
* Imiqathango ephantsi yezothutho (ayisachazwa njengeyingozi 6.1)
* Kulula ukuthobela iziqinisekiso zokukhupha ukungcola okuncinci, ingakumbi kumacandelo anobuzaza afana neemeko zonyango nezemfundo.
Ngamafutshane, ukususwa kwe-NVC kubonelela ngomahluko ocacileyo kwintengiso, isiqinisekiso esiluhlaza, kunye neeprojekthi zethenda.
Ubukho bembali be-NVP kunye ne-NVC kwii-Inks ze-UV
Ukususela ekupheleni kweminyaka yoo-1990 ukuya ekuqaleni kweminyaka yoo-2010, i-NVP kunye ne-NVC zazizizinto ezisetyenziswa kakhulu kwiinkqubo ze-inki ze-UV ngenxa yokunciphisa i-viscosity yazo ngempumelelo kunye ne-reactivity ephezulu. Iifomyula eziqhelekileyo zee-inki ze-inkjet ezimnyama zazine-15–25 wt% NVP/NVC, ngelixa ii-flexographic clear coats zazine-5–10 wt%.
Nangona kunjalo, ekubeni i-European Printing Ink Association (EuPIA) ithintele ukusetyenziswa kwee-monomers ezibangela umhlaza kunye ne-mutagenic, iifomyula zemveli ze-NVP/NVC zitshintshwa ngokukhawuleza zizinye iindlela ezikhuselekileyo ezifana ne-VMOX, i-IBOA, kunye ne-DPGDA. Kubalulekile ukuqaphela ukuba ii-inki ezisekelwe kwisinyibilikisi okanye ezisekelwe emanzini azizange zifake i-NVP/NVC; ezi lactam ze-vinyl ezine-nitrogen zifunyenwe kuphela kwiinkqubo zokuphilisa ze-UV/EB.
Izisombululo ze-UV ze-Haohui zabavelisi be-inki
Njengenkokeli kwishishini lokunyanga i-UV, i-Haohui New Materials izinikele ekuphuhliseni ii-inki ze-UV ezikhuselekileyo nezinobuhlobo nokusingqongileyo kunye neenkqubo ze-resin. Sixhasa ngokukodwa abavelisi be-inki abaguqukayo ukusuka kwii-inki zemveli ukuya kwizisombululo ze-UV ngokujongana neendawo eziqhelekileyo zentlungu ngenkxaso yobugcisa eyenzelwe wena. Iinkonzo zethu ziquka isikhokelo sokukhetha imveliso, ukulungiswa kwefomyula, ukulungiswa kwenkqubo, kunye noqeqesho lobungcali, olwenza abathengi bethu baphumelele phakathi kwemithetho yokusingqongileyo eqinileyo.
Ukuze ufumane iinkcukacha zobugcisa ezithe vetshe kunye neesampuli zemveliso, ndwendwela iwebhusayithi esemthethweni yeHaohui, okanye uqhagamshelane nathi kwiLinkedIn kunye neWeChat.
Ixesha leposi: Julayi-01-2025
