{"id":8398,"date":"2026-02-12T11:52:35","date_gmt":"2026-02-12T03:52:35","guid":{"rendered":"https:\/\/www.honorpigment.com\/en\/pigment-red-48-2-ultimate-guide-solvent-gravure-inks\/"},"modified":"2026-05-02T22:32:50","modified_gmt":"2026-05-02T14:32:50","slug":"pigment-red-48-2-ultimate-guide","status":"publish","type":"post","link":"https:\/\/www.honorpigment.com\/ko\/pigment-red-48-2-ultimate-guide\/","title":{"rendered":"\uadf8\ub77c\ube44\uc5b4 \uc778\uc1c4\uc5d0\uc11c \uc194\ubca4\ud2b8 \uae30\ubc18 \uc789\ud06c\uc6a9 \uc548\ub8cc \uc801\uc0c9 48:2 - \ud2b9\uc131, \uc800\ud56d\uc131 \ubc0f \ubc30\ud569 \uace0\ub824 \uc0ac\ud56d"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\" data-rm-block-id=\"block-1\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1536\" height=\"1024\" class=\"wp-image-8397\" src=\"https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/02\/image_1770867490-iws4wfle.webp\" alt=\"\ud06c\ub86c \uc2e4\ub9b0\ub354\uc5d0 \ub8e8\ube48 \ub808\ub4dc \uc194\ubca4\ud2b8 \uadf8\ub77c\ube44\uc544 \uc789\ud06c\ub97c \ube14\ub808\uc774\ub529\ud558\uc5ec \uad11\ud0dd \ud544\ub984\uacfc \uac01\uc778\ub41c \uc140\uc744 \ubcf4\uc5ec\uc8fc\ub294 \ub9e4\ud06c\ub85c \ubdf0\uc785\ub2c8\ub2e4.\" srcset=\"https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/02\/image_1770867490-iws4wfle.webp 1536w, https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/02\/image_1770867490-iws4wfle-300x200.webp 300w, https:\/\/www.honorpigment.com\/wp-content\/uploads\/2026\/02\/image_1770867490-iws4wfle-18x12.webp 18w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/><\/figure>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-2\">Pigment Red 48:2 (PR48:2), also known as Calcium Red 2B (C.I. 15865:2), is a staple rubine-shade monoazo lake in solvent-based packaging inks. If you formulate nitrocellulose (NC) gravure reds for BOPP or PET, balance alcohol\/ethyl acetate systems, or qualify inks for PU\/PA laminations, you\u2019ve likely weighed PR48:2\u2019s color strength, gloss, bleed behavior, and cost-in-use against alternatives. This guide distills what matters in real production: where PR48:2 excels, where it needs risk controls, and how to set up dispersion, QC, and migration tests so the press run is as predictable as the lab.<\/p>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-3\">Who this is for: ink formulators, QC\/QA chemists, technical managers, and procurement engineers working on solvent-based gravure (and related flexo) inks for flexible packaging.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-4\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-5\">Identity and shade positioning<\/h2>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-6\">PR48:2 is the calcium salt of a Lithol Rubine monoazo pigment. In inks it typically presents as a bluish rubine shade, semi\u2011transparent, with high tinting strength and good gloss. Particle morphology and moderate oil absorption help flow and leveling in low-viscosity gravure vehicles. In day\u2011to\u2011day formulation, it\u2019s the \u201cworkhorse rubine\u201d for process reds, matches requiring a bluish bias, and vivid spot reds that still need clean overprints.<\/p>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-7\">When sourcing or qualifying supply, ensure grade-level surface treatments and PSD are compatible with your solvent blend and NC backbone. For a concise view of pigment categories used in inks, see the printing-ink portfolio overview from <a class=\"link\" href=\"https:\/\/www.honorpigment.com\/ko\/\" target=\"_self\" rel=\"follow\">\uba85\uc608 \uc548\ub8cc<\/a>. This reference is provided neutrally for context.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-8\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-9\">Why Pigment Red 48:2 for solvent-based inks remains widely used<\/h2>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-10\">Formulators continue to specify Pigment Red 48:2 for solvent-based inks because it balances three practical levers:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-11\">Coloristic performance: strong tinting strength with a clean bluish rubine shade and semi\u2011transparency that supports high gloss in thin gravure films.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-12\">Resistance profile: generally good resistance to common packaging solvents (alcohols, esters, aromatics) when dispersed correctly and protected against flocculation; overprint bleed is typically moderate and must be managed by test method and formulation.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-13\">Cost\u2011in\u2011use: efficient milling to target fineness, compatibility with common NC vehicles, and high strength can reduce pigment loading for a given density.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-14\">Here\u2019s the deal: PR48:2 isn\u2019t the most bleed\u2011resistant option available, but with disciplined dispersion, solvent balance, and QC, it\u2019s a reliable, economical choice for many NC gravure and lamination\u2011capable systems.<\/p>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-15\">For solvent resistance context, directories and a representative TDS consistently position PR48:2 for solvent-based and offset inks, with strong performance in alcohols\/esters\/aromatics. See this summary in the DCL\/DCC\u2011LANSCO technical document, where ethanol is rated very good, ethyl acetate excellent, and aromatics very good in typical scales: <a class=\"link\" href=\"https:\/\/www.pigments.com\/wp-content\/uploads\/1482_2B_RED_48_2_EN_TDS.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><strong>PR48:2 resistance properties \u2014 DCL\/LANSCO 1482 TDS<\/strong><\/a>. Broader ink brochures echo this positioning; for example, <a class=\"link\" href=\"https:\/\/vibrantz.com\/wp-content\/uploads\/2023\/02\/110-Ferro-Pigments-for-Inks_DIGITAL-BROCHURE_new-.pdf\" target=\"_blank\" rel=\"nofollow noopener\"><strong>Vibrantz\u2019s pigments for inks overview<\/strong><\/a> describes rubine pigments with high intensity, gloss, and transparency.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-16\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-17\">Typical performance profile and what to verify in your lab<\/h2>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-18\">Because published, ink\u2011specific numeric data vary by grade and testing method, use the following as directional guidance and lock final values with your supplier\u2019s TDS and in\u2011house tests:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-19\">Solvent\/chemical resistance (qualitative expectations in solvent-based inks):<\/p>\r\n<ul>\r\n<li>\r\n<p data-rm-block-id=\"block-20\">Alcohols (e.g., ethanol, IPA): very good<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-21\">Esters (e.g., ethyl acetate): excellent<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-22\">Aromatics (e.g., toluene\/xylene proxies): very good<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-23\">Ketones (e.g., MEK): good to very good<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-24\">Aliphatics (e.g., mineral spirits): very good to excellent<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-25\">Overprint bleed\/solvent bleed: moderate; depends strongly on solvent ratios, film build, resin polarity, and substrate.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-26\">Lightfastness in inks: mid\u2011range typical of monoazo lakes; confirm per your end\u2011use exposure.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-27\">Heat stability in inks: commonly acceptable for solvent gravure drying profiles; confirm for your oven conditions and lamination cure.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-28\">Anchor your resistance checks to recognized standards and application workflows:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-29\">Use the solvent\/liquid resistance framework in <a class=\"link\" href=\"https:\/\/www.iso.org\/standard\/76452.html\" target=\"_blank\" rel=\"nofollow noopener\">ISO 2836:2021 \u2014 assessment of resistance to solvents and liquids<\/a> to define and document ethanol, ethyl acetate, and aromatic rub tests and overprint bleed assessments.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-30\">Prepare gravure lab prints per <a class=\"link\" href=\"https:\/\/www.iso.org\/standard\/82263.html\" target=\"_blank\" rel=\"nofollow noopener\">ISO 2834\u20112:2022 \u2014 laboratory preparation of solvent-based gravure test prints<\/a> so your resistance results are comparable across trials and suppliers.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-31\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-32\">System-by-system guidance<\/h2>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\" data-rm-block-id=\"block-33\">NC\/toluene gravure inks (surface print)<\/h3>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-34\">NC\/toluene systems often deliver excellent wetting and fast release, which helps PR48:2 reach gloss and density quickly. Two points deserve attention:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-35\">Solvent power and bleed: high aromatic content can increase the risk of overprint bleed, especially over white or on low\u2011surface\u2011energy films. Control by optimizing solvent balance (aromatics\/alcohol\/ester), reducing local film build in overprints, and verifying with ISO 2836 rub\/bleed on production substrates.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-36\">Storage stability: toluene\u2011rich systems may mask early flocculation; monitor viscosity drift and gloss\/strength retention over time, and use NC\u2011compatible dispersants to stabilize the final PSD.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-37\">Action items: design a rubric for acceptable bleed (e.g., no visible stain after X double rubs with ethanol or EA swab, and no halo after Y minutes of wet overprint contact), then test on target BOPP\/PET at production coatweights.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\" data-rm-block-id=\"block-38\">Alcohol\/ethyl acetate NC gravure inks \u2014 PR48:2 for gravure inks in balanced alcohol\/EA systems<\/h3>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-39\">Alcohol\/EA blends are widely used for flexible packaging. PR48:2 typically disperses readily and maintains gloss if the PSD tail is controlled.<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-40\">Ester\u2011rich risks: ester\u2011driven swelling of some resin domains can soften the film early in drying, increasing transient bleed. Manage with flash zones and solvent balance (slightly higher alcohol content for faster surface set), and check overprint intervals.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-41\">Viscosity control: monitor for slow drift during storage, which can hint at flocculation; ensure your dispersant selection matches the NC and plasticizer package, not just the pigment surface.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-42\">Action items: define NPIRI grind acceptance at ink stage, verify density\/gloss vs. coarse tail on the grind gauge, and correlate to on\u2011press mottle or cell plugging risk.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\" data-rm-block-id=\"block-43\">PU\/PA lamination\u2011compatible inks<\/h3>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-44\">You can use PR48:2 in inks intended for downstream lamination with PU\/PA adhesives, but migration\/bleed controls must be explicit. The workflow matters more than any single pigment property.<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-45\">Build your test plan around the packaging route: surface print on PET\/OPP, adhesive lamination to PE, cure, then migration screening with appropriate food simulants and time\/temperature per regulation.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-46\">Follow the screening\/verification logic in the industry guidance: see the <a class=\"link\" href=\"https:\/\/www.eupia.org\/wp-content\/uploads\/2023\/06\/2023-05-03-EuPIA-Guidance-on-Migration-Test-Methods.pdf\" target=\"_blank\" rel=\"nofollow noopener\">EuPIA Guidance on Migration Test Methods (2023 update)<\/a>. For regulatory conditions and simulants, consult <a class=\"link\" href=\"https:\/\/eur-lex.europa.eu\" target=\"_blank\" rel=\"nofollow noopener\">Regulation (EU) No 10\/2011 on plastic materials<\/a> and the plastics migration test methods in <a class=\"link\" href=\"https:\/\/www.iso.org\/ics\/67.250\/x\/\" target=\"_blank\" rel=\"nofollow noopener\">EN 1186<\/a>. A complementary adhesive perspective appears in <a class=\"link\" href=\"https:\/\/www.bfr.bund.de\/cm\/349\/XXVIII-Cross-Linked-Polyurethanes-as-Adhesive-Layers-for-Food-Packaging-Materials.pdf\" target=\"_blank\" rel=\"nofollow noopener\">BfR Recommendation XXVIII on polyurethane adhesives (2024)<\/a>.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-47\">Practical note: if low migration is a hard requirement and your screenings show elevated set\u2011off or adhesive\u2011side staining, evaluate alternate reds or different PR48 salts via head\u2011to\u2011head laminated stack testing before scale\u2011up.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-48\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-49\">Dispersion and milling best practices for gravure<\/h2>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-50\">Think of dispersion like cooking sugar syrup: you want it smooth, clear, and controlled\u2014no burnt edges and no gritty crystals. For PR48:2, the goals are a narrow particle size distribution (low coarse tail), stable deflocculation, and low\u2011viscosity flow that releases cleanly from gravure cells.<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-51\">Fineness target and QC: use the NPIRI grind gauge as your common language. Establish acceptance using <a class=\"link\" href=\"https:\/\/www.astm.org\/d1316-20.html\" target=\"_blank\" rel=\"nofollow noopener\">ASTM D1316 \u2014 Fineness of Grind by the NPIRI Grindometer<\/a>. Document the largest particle size observed and correlate to gloss and density.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-52\">Bead milling: select bead size to control energy input without excessive heat (small to medium beads commonly favored for organic reds). Control temperature to prevent flocculation and resin softening.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-53\">Wetting\/dispersing aids: choose NC\u2011compatible anionic\/nonionic systems that adsorb to PR48:2 surfaces and remain effective in your solvent polarity; avoid over\u2011addition that can lower film integrity.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-54\">Anti\u2011settling and storage: consider rheology modifiers compatible with NC to mitigate hard\u2011settling without hurting transfer. Record viscosity at defined temperatures over time as part of QC.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-55\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-56\">Test methods and acceptance criteria you can adopt<\/h2>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-57\">Standardized methods align teams and suppliers, and they help you troubleshoot faster when something shifts on press.<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-58\">Solvent\/liquid resistance and bleed: Define rub and overprint bleed criteria using <a class=\"link\" href=\"https:\/\/www.iso.org\/standard\/76452.html\" target=\"_blank\" rel=\"nofollow noopener\">ISO 2836:2021<\/a>. Specify test liquids (ethanol, ethyl acetate, toluene\/xylene proxies where appropriate), rub pressure\/cycles, contact time for wet overprint, and pass\/fail visual ratings.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-59\">Gravure lab prints: Prepare test prints per <a class=\"link\" href=\"https:\/\/www.iso.org\/standard\/82263.html\" target=\"_blank\" rel=\"nofollow noopener\">ISO 2834\u20112:2022<\/a> to control film build, drying, and substrate selection. This removes \u201capples vs oranges\u201d debates in vendor trials.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-60\">Fineness of grind: Use <a class=\"link\" href=\"https:\/\/www.astm.org\/d1316-20.html\" target=\"_blank\" rel=\"nofollow noopener\">ASTM D1316<\/a> and couple the gauge reading to spectrodensitometry and gloss so PSD targets are meaningful.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-61\">Lamination\/migration workflow: For food\u2011contact\u2011adjacent use cases, build screening around the <a class=\"link\" href=\"https:\/\/www.eupia.org\/wp-content\/uploads\/2023\/06\/2023-05-03-EuPIA-Guidance-on-Migration-Test-Methods.pdf\" target=\"_blank\" rel=\"nofollow noopener\">EuPIA Guidance on Migration Test Methods<\/a> and regulatory conditions from <a class=\"link\" href=\"https:\/\/eur-lex.europa.eu\" target=\"_blank\" rel=\"nofollow noopener\">EU 10\/2011<\/a> with plastic test methods in <a class=\"link\" href=\"https:\/\/www.iso.org\/ics\/67.250\/x\/\" target=\"_blank\" rel=\"nofollow noopener\">EN 1186<\/a>. Keep records tied to each laminate stack and cure schedule.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-62\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-63\">Comparative view: PR48 family and a common alternative<\/h2>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-64\">Below is a qualitative comparison to help frame screening priorities. Values are generalized and must be confirmed with your chosen grade and tests.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table class=\"has-fixed-layout\"><colgroup><col data-rm-block-id=\"block-65\" \/><col data-rm-block-id=\"block-66\" \/><col data-rm-block-id=\"block-67\" \/><col data-rm-block-id=\"block-68\" \/><col data-rm-block-id=\"block-69\" \/><col data-rm-block-id=\"block-70\" \/><col data-rm-block-id=\"block-71\" \/><\/colgroup>\r\n<tbody>\r\n<tr>\r\n<th colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-72\">Pigment (salt\/chemistry)<\/p>\r\n<\/th>\r\n<th colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-73\">Shade note in inks<\/p>\r\n<\/th>\r\n<th colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-74\">Solvent resistance (alcohol\/EA\/aromatics)<\/p>\r\n<\/th>\r\n<th colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-75\">Overprint bleed tendency<\/p>\r\n<\/th>\r\n<th colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-76\">Lightfastness in inks<\/p>\r\n<\/th>\r\n<th colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-77\">Heat handling in inks<\/p>\r\n<\/th>\r\n<th colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-78\">Typical use note<\/p>\r\n<\/th>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-79\">PR48:1 (barium)<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-80\">Rubine, slightly yellower<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-81\">Very good \/ Excellent \/ Very good<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-82\">Moderate<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-83\">Mid\u2011range<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-84\">Suitable for normal drying<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-85\">Broadly used in solvent\/offset<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-86\">PR48:2 (calcium)<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-87\">Bluish rubine, semi\u2011transparent<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-88\">Very good \/ Excellent \/ Very good<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-89\">Moderate (manage by test\/formulation)<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-90\">Mid\u2011range<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-91\">Suitable for normal drying<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-92\">Workhorse for NC gravure<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-93\">PR48:3 (strontium)<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-94\">Rubine, often slightly yellower than 48:2<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-95\">Very good \/ Excellent \/ Very good<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-96\">Often lower bleed risk in some systems<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-97\">Mid\u2011range<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-98\">Suitable for normal drying<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-99\">Consider when bleed risk is critical<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-100\">PR53:1 (naphthol)<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-101\">Redder, less bluish<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-102\">Very good \/ Very good \/ Good<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-103\">Variable by grade<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-104\">Mid to higher in some systems<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-105\">Acceptable with care<\/p>\r\n<\/td>\r\n<td colspan=\"1\" rowspan=\"1\">\r\n<p data-rm-block-id=\"block-106\">Alternate for specific shades<\/p>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-107\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-108\">Practical examples and stepwise workflows<\/h2>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\" data-rm-block-id=\"block-109\">A. NC\/toluene gravure red (surface print) \u2014 example workflow<\/h3>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-110\">Objective: high\u2011gloss rubine process red for BOPP with controlled overprint bleed over white.<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-111\">Pigment selection: PR48:2 with NC\u2011compatible surface treatment.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-112\">Vehicle: NC (RS grades), plasticizer as required, solvent blend leaning to toluene with supporting ethyl acetate\/ethanol for balance.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-113\">Dispersant: NC\u2011friendly wetting\/dispersing aid dosed to pigment surface area.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-114\">Milling: high\u2011speed disperser pre\u2011mix, then bead mill with temperature control; target narrow PSD with low coarse tail per your NPIRI acceptance.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-115\">Letdown: adjust solids for gravure viscosity and cell release; add anti\u2011settling if storage requires it.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-116\">QC checkpoints: NPIRI grind at production temperature, density and gloss on PET\/BOPP lab prints per ISO 2834\u20112, overprint bleed per ISO 2836 with ethanol and ethyl acetate rubs, visual halo check after wet\u2011on\u2011wet contact.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-117\">Neutral supplier example: PR48:2 from Honor Pigments can be incorporated following the process above; validate PSD, gloss, and bleed to your internal acceptance criteria before press trials.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\" data-rm-block-id=\"block-118\">B. PU\/PA lamination\u2011compatible ink \u2014 screening and verification workflow<\/h3>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-119\">Objective: surface\u2011printed PET subsequently laminated to PE using a PU\/PA adhesive; limit set\u2011off and potential migration.<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-120\">Formulation base: PR48:2 in an alcohol\/EA\u2011balanced NC system tuned for fast surface set and controlled film weight.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-121\">Cure and laminate: print on PET, dry, apply PU\/PA adhesive per spec, laminate to PE, and cure under production\u2011representative time\/temperature.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-122\">Screening: conduct set\u2011off checks under pressure, then migration screening with food simulants and time\/temperature conditions aligned with <a class=\"link\" href=\"https:\/\/eur-lex.europa.eu\" target=\"_blank\" rel=\"nofollow noopener\">Regulation (EU) No 10\/2011 on plastics<\/a> and the plastic test methods in <a class=\"link\" href=\"https:\/\/www.iso.org\/ics\/67.250\/x\/\" target=\"_blank\" rel=\"nofollow noopener\">EN 1186<\/a>, following the structure proposed in the <a class=\"link\" href=\"https:\/\/www.eupia.org\/wp-content\/uploads\/2023\/06\/2023-05-03-EuPIA-Guidance-on-Migration-Test-Methods.pdf\" target=\"_blank\" rel=\"nofollow noopener\">EuPIA Guidance on Migration Test Methods (2023)<\/a>.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-123\">Decision gate: if screenings are marginal, consider reducing film build, extending cure, or testing alternate reds (including other PR48 salts) under identical laminate conditions.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-124\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-125\">Troubleshooting and QC checklist<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-126\">Overprint bleed observed on press<\/p>\r\n<ul>\r\n<li>\r\n<p data-rm-block-id=\"block-127\">Likely causes: excessive aromatic fraction; insufficient flash\/dry; high local film build; flocculation increasing free dye sites.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-128\">Correctives: rebalance solvent (increase alcohol\/EA for surface set), adjust anilox\/cell volume, improve flash\/oven zoning, optimize dispersant level and milling temperature.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-129\">Loss of gloss or density vs. lab<\/p>\r\n<ul>\r\n<li>\r\n<p data-rm-block-id=\"block-130\">Likely causes: coarse PSD tail; press temperature rise causing flocculation; substrate energy mismatch.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-131\">Correctives: tighten NPIRI acceptance, increase cooling in milling, confirm corona treatment and cleanliness of film.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-132\">Viscosity drift in storage<\/p>\r\n<ul>\r\n<li>\r\n<p data-rm-block-id=\"block-133\">Likely causes: slow flocculation; incompatible dispersant; solvent loss.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-134\">Correctives: adjust dispersant chemistry\/dose, incorporate NC\u2011compatible anti\u2011settling, improve container closure and headspace control.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-135\">Lamination set\u2011off or staining<\/p>\r\n<ul>\r\n<li>\r\n<p data-rm-block-id=\"block-136\">Likely causes: insufficient dry\/cure; adhesive interaction; excessive film build.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-137\">Correctives: extend drying or cure, tune adhesive mix\/cure profile, lower coatweight, verify with laminate stack tests.<\/p>\r\n<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-138\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-139\">When to consider alternatives or different PR48 salts<\/h2>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-140\">Switch when your tests (not assumptions) indicate an unacceptable risk envelope. Triggers include:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-141\">Persistent overprint bleed in aromatic\u2011leaning systems despite solvent balance and PSD control.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-142\">Low\u2011migration laminate targets that fail screening\/verification despite process optimization.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-143\">Shade targets requiring a different hue location or higher outdoor fastness than typical monoazo lakes provide.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-144\">In these cases, design a controlled comparison: hold vehicle, solvent balance, PSD target, film build, substrate, adhesive, and cure constant; swap only the red pigment family or salt. Evaluate against the same ISO 2836\/2834\u20112 and laminate migration workflow. The result is data you can defend in a customer audit.<\/p>\r\n\r\n\r\n<hr class=\"wp-block-separator\" data-rm-block-id=\"block-145\" \/>\r\n\r\n\r\n<h2 class=\"wp-block-heading\" data-rm-block-id=\"block-146\">Closing: actionable next steps<\/h2>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>\r\n<p data-rm-block-id=\"block-147\">Lock your lab methods: ISO 2836 for resistance\/bleed, ISO 2834\u20112 for gravure lab prints, ASTM D1316 for grind control.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-148\">Codify acceptance criteria that tie NPIRI readings to gloss and density on your target films.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-149\">For lamination, implement the EuPIA\u2011aligned screening\/verification workflow before scale\u2011up.<\/p>\r\n<\/li>\r\n<li>\r\n<p data-rm-block-id=\"block-150\">Keep a slim alternate\u2011red matrix ready for quick A\/B testing when bleed or migration tightens.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p data-rm-block-id=\"block-151\">For a concise view of pigment categories commonly used in printing inks, explore the neutral, high\u2011level overview at <a class=\"link\" href=\"https:\/\/www.honorpigment.com\/ko\/product-category\/%ec%9c%a0%ea%b8%b0-%ec%95%88%eb%a3%8c\/%ec%9d%b8%ec%87%84-%ec%9e%89%ed%81%ac%ec%9a%a9-%ec%95%88%eb%a3%8c\/\" target=\"_self\" rel=\"follow\">Pigments for Printing Inks \u2014 Honor Pigments<\/a>. Validate all selections with internal tests before commercial production.<\/p>\r\n\r\n<p data-rm-block-id=\"block-152\">\u00a0<\/p>","protected":false},"excerpt":{"rendered":"<p>Comprehensive ultimate guide to Pigment Red 48:2 for solvent-based inks\u2014properties, solvent resistance, dispersion, and gravure\/lamination formulation tips. Read now.<\/p>","protected":false},"author":2,"featured_media":8397,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_focus_keyword":"Pigment Red 48:2 for solvent-based","rank_math_description":"","rank_math_robots":"","_rank_math_focus_keyword":"pigment red 48:2","rank_math_seo_score":"79","footnotes":""},"categories":[1],"tags":[],"class_list":["post-8398","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/posts\/8398","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/comments?post=8398"}],"version-history":[{"count":1,"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/posts\/8398\/revisions"}],"predecessor-version":[{"id":9207,"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/posts\/8398\/revisions\/9207"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/media\/8397"}],"wp:attachment":[{"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/media?parent=8398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/categories?post=8398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.honorpigment.com\/ko\/wp-json\/wp\/v2\/tags?post=8398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}