{"id":5784,"date":"2022-12-13T14:44:32","date_gmt":"2022-12-13T14:44:32","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5784"},"modified":"2026-04-28T11:19:24","modified_gmt":"2026-04-28T11:19:24","slug":"plasticizer-in-ink","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/pt\/plasticizer-in-ink\/","title":{"rendered":"Como os plastificantes afetam a ades\u00e3o das tintas no PVC?"},"content":{"rendered":"<h1><strong>Como os plastificantes afetam a ades\u00e3o das tintas no PVC?<\/strong><\/h1>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>Quick answer:<\/strong> For plasticizer topics, buyers usually compare flexibility, migration behavior, processing fit, and compliance together because end-use requirements can vary sharply between food contact, flexible plastics, and general industrial products.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<p>Com uma nova rodada de provas experimentais, desta vez adicionaremos 2 partes de aditivos transparentes a 1 parte da tinta de impress\u00e3o original. Neste ponto, a tinta de impress\u00e3o pigmentada \u00e9 apenas 33% do total e pode-se constatar que a capacidade de impress\u00e3o dessa mistura foi ainda mais otimizada e as cores ainda est\u00e3o dentro da faixa aceita para a maioria dos produtos dos fabricantes. Ao configurar as tintas de impress\u00e3o, \u00e9 necess\u00e1rio testar diferentes marcas de tintas de impress\u00e3o, pois h\u00e1 muitas tintas de impress\u00e3o cuja cor \u00e9 dilu\u00edda quando misturadas com aditivos 50%, enquanto algumas n\u00e3o sofrem nenhuma altera\u00e7\u00e3o. Os aditivos e plastificantes usados pelos fabricantes para formular as tintas de impress\u00e3o s\u00e3o os fatores mais importantes que causam diferen\u00e7as na qualidade das tintas de impress\u00e3o, sendo os plastificantes o ingrediente mais importante, tamb\u00e9m chamados de redutores na maioria dos casos.<\/p>\n<p>A mistura da quantidade certa de tinta de impress\u00e3o com a quantidade certa de agente redutor tornar\u00e1 a tinta menos viscosa, melhorando assim a capacidade de impress\u00e3o da tinta de impress\u00e3o. Normalmente, na impress\u00e3o em quatro cores, n\u00e3o \u00e9 necess\u00e1rio adicionar agente redutor e, no processo de impress\u00e3o em tela, a forma\u00e7\u00e3o de pontos de tinta de impress\u00e3o \u00e9 determinada pelo tamanho da malha da tela. Se a malha sair da superf\u00edcie do substrato, haver\u00e1 distor\u00e7\u00e3o do ponto de tinta, e a imagem impressa ficar\u00e1 borrada. O agente redutor no recipiente \u00e9 t\u00e3o claro e transparente quanto a \u00e1gua; se voc\u00ea pegar uma colherada, ele parecer\u00e1 um pouco com \u00f3leo claro, e as instru\u00e7\u00f5es do fabricante devem ser rigorosamente seguidas ao us\u00e1-lo. Se voc\u00ea adicionar muito agente redutor, ser\u00e1 dif\u00edcil para a tinta de impress\u00e3o se combinar com o tecido, independentemente da quantidade de agente secante que voc\u00ea adicionar, da velocidade de impress\u00e3o e do tempo necess\u00e1rio para passar pelo agente secante. Portanto, \u00e9 preciso ter cuidado ao adicionar agentes redutores.<\/p>\n<p>Os plastificantes s\u00e3o produtos qu\u00edmicos que tornam os materiais impressos mais flex\u00edveis e male\u00e1veis, e seu uso em PVC (cloreto de polivinila) \u00e9 muito comum. O tipo e a quantidade de plastificante adicionado ao PVC flex\u00edvel ou a outros pl\u00e1sticos dependem muito das propriedades mec\u00e2nicas, t\u00e9rmicas e el\u00e9tricas exigidas do material impresso. Os plastificantes t\u00eam o potencial de migrar para a superf\u00edcie do substrato e afetar a ades\u00e3o da tinta. Os plastificantes deixados na superf\u00edcie do substrato s\u00e3o um tipo de contamina\u00e7\u00e3o que reduzir\u00e1 a energia da superf\u00edcie do substrato. Quanto mais contamina\u00e7\u00e3o houver na superf\u00edcie, menor ser\u00e1 a energia da superf\u00edcie e menor ser\u00e1 a ades\u00e3o \u00e0 tinta. Para evitar isso, \u00e9 poss\u00edvel limpar os substratos com um solvente de limpeza suave antes da impress\u00e3o para melhorar sua capacidade de impress\u00e3o.<\/p>\n<p>2. Quantas luzes preciso usar para a cura?<br \/>\nEmbora os sistemas de tinta e os tipos de substrato variem, em geral, um sistema de cura com uma \u00fanica l\u00e2mpada \u00e9 suficiente. Obviamente, se voc\u00ea tiver or\u00e7amento suficiente, tamb\u00e9m poder\u00e1 escolher uma unidade de cura com duas l\u00e2mpadas para aumentar a velocidade de cura. O que torna duas l\u00e2mpadas de cura melhores do que uma \u00e9 o fato de um sistema de l\u00e2mpada dupla fornecer mais energia ao substrato com a mesma velocidade de transfer\u00eancia e configura\u00e7\u00f5es de par\u00e2metros. Uma quest\u00e3o que precisamos enfocar \u00e9 se a unidade de cura pode ser suficiente para secar a tinta impressa em velocidades normais.<\/p>\n<p>&nbsp;<\/p>\n<p>3. Como a viscosidade da tinta afeta a capacidade de impress\u00e3o?<\/p>\n<p>A maioria das tintas \u00e9 tixotr\u00f3pica, o que significa que sua viscosidade muda com o cisalhamento, o tempo e a temperatura. Al\u00e9m disso, quanto maior for a taxa de cisalhamento, menor ser\u00e1 a viscosidade da tinta; quanto maior for a temperatura ambiente, menor ser\u00e1 a viscosidade anual da tinta. As tintas para serigrafia geralmente alcan\u00e7am bons resultados na prensa, mas ocasionalmente apresentam problemas de impress\u00e3o, dependendo das configura\u00e7\u00f5es da prensa e dos ajustes pr\u00e9-impress\u00e3o. Al\u00e9m disso, a viscosidade da tinta na impressora \u00e9 diferente da viscosidade que ela tem no cartucho. Os fabricantes de tintas definem uma faixa de viscosidade espec\u00edfica para seus produtos. Para tintas muito finas ou com viscosidade muito baixa, o usu\u00e1rio tamb\u00e9m pode adicionar um agente espessante, conforme apropriado, enquanto para tintas muito grossas ou com viscosidade muito alta, o usu\u00e1rio tamb\u00e9m pode adicionar um diluente.<\/p>\n<h2><\/h2>\n<p><!-- lc-commercial-start --><\/p>\n<h2>How buyers usually evaluate plasticizers and flexibility modifiers<\/h2>\n<p>Plasticizer sourcing usually goes more smoothly when the end-use exposure, migration limit, and processing route are reviewed before price negotiations. That usually gives a clearer answer on whether a phthalate, terephthalate, or citrate route is commercially strongest.<\/p>\n<ul>\n<li><strong>Start from the end-use requirement:<\/strong> food contact, toys, medical, and general industrial plastics need different screening priorities.<\/li>\n<li><strong>Review migration and permanence:<\/strong> flexibility alone is not enough if the application is sensitive to extraction, volatility, or long-term loss.<\/li>\n<li><strong>Check process fit:<\/strong> compatibility, viscosity effect, and thermal stability often decide whether a plasticizer is easy to scale.<\/li>\n<\/ul>\n<h3>Recommended product references<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/pt\/product\/acetyl-tributyl-citrate-cas-77-90-7\/\">CHLUMIFLEX ATBC<\/a>:<\/strong> A practical non-phthalate plasticizer reference for food-contact and compliance-sensitive discussions.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/pt\/product\/dotp-cas-6422-86-2\/\">CHLUMIFLEX DOTP<\/a>:<\/strong> A common terephthalate-plasticizer benchmark when balancing processability, migration profile, and compliance needs.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/pt\/product\/dbp-dibutyl-phthalate-cas-84-74-2\/\">CHLUMIFLEX DBP<\/a>:<\/strong> A conventional plasticizer comparison point when historical formulation routes or substitution choices are being reviewed.<\/li>\n<\/ul>\n<h3>FAQ for buyers and formulators<\/h3>\n<p><strong>Why is a lower-cost plasticizer not always the better sourcing choice?<\/strong><br \/>Because compliance, migration profile, and process stability can quickly outweigh the unit-price difference.<\/p>\n<p><strong>Should plasticizer selection be based on flexibility only?<\/strong><br \/>Usually no. The strongest choice also needs to match migration expectations, thermal behavior, and the real end-use standard.<\/p>\n<p><!-- lc-commercial-end --><\/p>\n<h2><strong><b>Entre em contato conosco agora!<\/b><\/strong><\/h2>\n<h4><strong><b>Se precisar de COA, MSDS ou TDS, preencha suas informa\u00e7\u00f5es de contato no formul\u00e1rio abaixo. Normalmente, entraremos em contato em at\u00e9 24 horas.<\/b><\/strong> Voc\u00ea tamb\u00e9m pode me enviar um e-mail <a href=\"mailto:info@longchangchemical.com\"><span style=\"color: #0000ff;\">info@longchangchemical.com<\/span><\/a> durante o hor\u00e1rio comercial (das 8h30 \u00e0s 18h UTC+8 de segunda a s\u00e1bado) ou use o bate-papo ao vivo do site para obter uma resposta imediata.<\/h4>","protected":false},"excerpt":{"rendered":"<p>With a new round of experimental proofs, this time we will add 2 parts of transparent additives to 1 part of the original printing ink. At this point the pigmented<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5784","post","type-post","status-publish","format-standard","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How do plasticizers affect the adhesion of inks on PVC? - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"With a new round of experimental proofs, this time we will add 2 parts of transparent additives to 1 part of the original printing ink. 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