Makampani opanga inki ya UV akusintha kwambiri chifukwa cha kukwera kwa miyezo ya chilengedwe ndi thanzi. Chimodzi mwa zinthu zomwe zikulamulira msika ndi kukwezedwa kwa mitundu ya "NVP-Free" ndi "NVC-Free". Koma nchifukwa chiyani opanga inki akusiya kugwiritsa ntchito NVP ndi NVC?
Kumvetsetsa NVP ndi NVC
**NVP (N-vinyl-2-pyrrolidone)** ndi chosakaniza chotulutsa nayitrogeni chokhala ndi formula ya molekyulu C₆H₉NO, yokhala ndi mphete ya pyrrolidone yokhala ndi nayitrogeni. Chifukwa cha kukhuthala kwake kochepa (nthawi zambiri kumachepetsa kukhuthala kwa inki kufika pa 8–15 mPa·s) komanso kukhuthala kwakukulu, NVP yagwiritsidwa ntchito kwambiri mu zokutira za UV ndi inki. Komabe, malinga ndi BASF's Safety Data Sheets (SDS), NVP imagawidwa ngati Carc. 2 (H351: carcinogen yomwe ikuganiziridwa), STOT RE 2 (H373: kuwonongeka kwa ziwalo), ndi Acute Tox. 4 (poizoni woopsa). Msonkhano wa American Conference of Governmental Industrial Hygienists (ACGIH) uli ndi kukhudzana kochepa ndi mtengo wokhazikika (TLV) wa 0.05 ppm yokha.
Mofananamo, **NVC (N-vinyl caprolactam)** yagwiritsidwa ntchito kwambiri mu inki za UV. Cha m'ma 2024, malamulo a CLP a European Union adapereka magulu atsopano a H317 (kuzindikira khungu) ndi H372 (kuwonongeka kwa ziwalo) ku NVC. Ma inki okhala ndi 10 wt% kapena kuposerapo NVC ayenera kuwonetsa bwino chizindikiro cha ngozi ya chigaza ndi mafupa, zomwe zimapangitsa kuti kupanga, mayendedwe, ndi mwayi wopeza msika ukhale wovuta kwambiri. Makampani otchuka monga NUtec ndi swissQprint tsopano akulengeza momveka bwino "inki za UV zopanda NVC" patsamba lawo lawebusayiti ndi zida zotsatsira kuti agogomeze ziyeneretso zawo zosamalira chilengedwe.
Nchifukwa chiyani "Wopanda NVC" Akukhala Malo Ogulitsira?
Kwa makampani, kugwiritsa ntchito "opanda NVC" kumatanthauza zabwino zingapo zomveka bwino:
* Kuchepetsa magulu a zoopsa za SDS
* Zoletsa zoyendera zochepa (sizilinso m'gulu la zoopsa 6.1)
* Kutsatira mosavata ziphaso zochepetsa mpweya woipa, makamaka zothandiza m'magawo ovuta monga azachipatala ndi maphunziro.
Mwachidule, kuchotsa NVC kumapereka kusiyana komveka bwino pa malonda, satifiketi yobiriwira, ndi mapulojekiti a ma tender.
Kupezeka kwa NVP ndi NVC m'mbiri yakale mu UV Inks
Kuyambira kumapeto kwa zaka za m'ma 1990 mpaka kumayambiriro kwa zaka za m'ma 2010, NVP ndi NVC zinali zosakaniza zofala kwambiri mu makina achikhalidwe a inki ya UV chifukwa cha kuchepetsa kwawo kukhuthala komanso kuchita bwino kwambiri. Ma formula wamba a inki zakuda anali ndi 15–25 wt% NVP/NVC, pomwe ma flexographic clear coats anali ndi pafupifupi 5–10 wt%.
Komabe, popeza bungwe la European Printing Ink Association (EuPIA) linaletsa kugwiritsa ntchito ma monomers omwe amayambitsa khansa komanso kusintha kwa zinthu, njira zachikhalidwe za NVP/NVC zikusinthidwa mwachangu ndi njira zina zotetezeka monga VMOX, IBOA, ndi DPGDA. Ndikofunikira kudziwa kuti inki zokhala ndi zosungunulira kapena zochokera m'madzi sizinaphatikizepo NVP/NVC; ma vinyl lactam awa omwe ali ndi nayitrogeni amapezeka mumakina ochiritsira a UV/EB okha.
Mayankho a UV a Haohui kwa Opanga Inki
Monga mtsogoleri mumakampani oyeretsera UV, Haohui New Materials yadzipereka pakupanga ma inki a UV ndi ma resin otetezeka komanso osawononga chilengedwe. Timathandizira makamaka opanga inki omwe amasintha kuchoka ku inki yachikhalidwe kupita ku mayankho a UV pothana ndi mavuto omwe amakumana nawo kudzera mu chithandizo chaukadaulo chopangidwa mwamakonda. Ntchito zathu zimaphatikizapo chitsogozo chosankha zinthu, kukonza kapangidwe kake, kusintha njira, ndi maphunziro aukadaulo, zomwe zimathandiza makasitomala athu kuti azichita bwino pakati pa malamulo okhwima okhudza chilengedwe.
Kuti mudziwe zambiri zaukadaulo ndi zitsanzo za zinthu, pitani patsamba lovomerezeka la Haohui, kapena lumikizanani nafe pa LinkedIn ndi WeChat.
Nthawi yotumizira: Julayi-01-2025
