{"id":10243,"date":"2026-06-23T00:00:50","date_gmt":"2026-06-23T00:00:50","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10243"},"modified":"2026-06-23T02:07:25","modified_gmt":"2026-06-23T02:07:25","slug":"sachet-ink-photoinitiator","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/ko\/sachet-ink-photoinitiator\/","title":{"rendered":"\ud30c\uc6b0\uce58 \ud3ec\uc7a5\uc6a9 \uc789\ud06c\uc758 \uad11\uac1c\uc2dc\uc81c: TPO-L, BMS, 551 \uc911 \uc120\ud0dd \ubc29\ubc95"},"content":{"rendered":"<p><strong>\ube60\ub978 \ub2f5\ubcc0:<\/strong> for many sachet-packaging ink projects, buyers can start with a disciplined three-product shortlist instead of treating all UV-curing routes as interchangeable. <a href=\"https:\/\/longchangchemical.com\/ko\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">\uad11\uac1c\uc2dc\uc81c TPO-L<\/a> deserves early attention when the sachet graphics need a <strong>liquid route, low yellowing, and stronger support for white or colored inks<\/strong>. <a href=\"https:\/\/longchangchemical.com\/ko\/product\/photoinitiator-bms\/\">\uad11\uac1c\uc2dc\uc81c BMS<\/a> \ub77c\uc778\uc774 \ub354 \ub098\uc544\uc838\uc57c \ud560 \ub54c \uc704\ub85c \uc62c\ub77c\uac11\ub2c8\ub2e4 <strong>\ud45c\uba74 \uacbd\ud654\uc640 \uc2ec\ubd80 \uacbd\ud654\uc758 \uade0\ud615<\/strong>\ud2b9\ud788 \ud50c\ub809\uc18c\uadf8\ub798\ud53d \ud3ec\uc7a5 \uc778\uc1c4, \ubc31\uc0c9 \uc2dc\uc2a4\ud15c \ubc0f UV-LED \uc804\ud658\uacfc \uad00\ub828\ud558\uc5ec \uadf8\ub807\uc2b5\ub2c8\ub2e4. <a href=\"https:\/\/longchangchemical.com\/ko\/product\/photoinitiator-551-cas-591773-90-9\/\">\uad11\uac1c\uc2dc\uc81c 551<\/a> becomes more attractive when the sachet job behaves like a <strong>\ub354\uc6b1 \uae68\ub057\ud55c \uc591\uc774\uc628 \ud3ec\uc7a5 \ud45c\uba74 \uacbd\ub85c<\/strong> \ub192\uc740 \uc811\ucc29\ub825, \ub0ae\uc740 \uc218\ucd95\ub960, \ub0ae\uc740 \ub0c4\uc0c8, \uadf8\ub9ac\uace0 365~395nm\uc758 \ub113\uc740 \ud30c\uc7a5 \ub300\uc5ed\uc744 \uc9c0\uc6d0\ud558\ub294 LED\uac00 \uc911\uc694\ud55c \uacbd\uc6b0.<\/p>\n<p>This page is intentionally narrower than a broad packaging-ink article. The buyer question here is more specific: <strong>which photoinitiator route makes sense when the printed pack is a small flexible sachet, often built from laminated plastic film or foil structures, and the commercial target is clean graphics, cure reliability, low odor, and stable performance on real packaging lines?<\/strong><\/p>\n<h2>Why sachet-packaging ink selection is different from generic packaging-ink selection<\/h2>\n<p>General industry packaging references commonly describe sachets as <strong>small single-dose flexible packets<\/strong> built from <strong>laminated plastic films, foil laminates, or similar barrier structures<\/strong>. They are widely used across food, personal-care, and pharmaceutical-style packaging and are often produced on horizontal or vertical form-fill-seal lines. The print route is also not one-size-fits-all. Flexible-packaging references commonly discuss <strong>gravure, flexographic, and digital printing<\/strong> depending run length, design complexity, and cost pressure.<\/p>\n<p>That matters because sachet buyers are usually not solving a generic ink question. They are balancing:<\/p>\n<ul>\n<li>\uc678\ubaa8 <strong>film or foil-based packaging faces<\/strong>,<\/li>\n<li>white or colored graphic cure on less-forgiving flexible structures,<\/li>\n<li>seal-area cleanliness and downstream handling expectations,<\/li>\n<li>odor and package-cleanliness pressure for consumer-facing small packs,<\/li>\n<li>and whether the line behaves more like a routine free-radical print job or a tighter cationic packaging route.<\/li>\n<\/ul>\n<p>That is why the first screening questions are usually:<\/p>\n<ul>\n<li>Is the sachet mainly a film-based graphics job, or does the structure push you toward a stricter packaging-surface route?<\/li>\n<li>Are the inks clear, lightly colored, strongly pigmented, or white-heavy?<\/li>\n<li>Is the production line closer to flexographic packaging print, mixed packaging-print plus OPV work, or a cationic packaging system?<\/li>\n<li>Is the main commercial risk yellowing, poor through-cure, weak surface cure, shrinkage, or odor?<\/li>\n<li>Does the plant need a conventional UV benchmark only, or broader UV-LED-ready screening?<\/li>\n<\/ul>\n<h2>TPO-L, BMS \ub610\ub294 551\uc774 \uc77c\ubc18\uc801\uc73c\ub85c \uc801\ud569\ud55c \uacbd\uc6b0\ub97c \uc815\ub9ac\ud55c \ud45c<\/h2>\n<table>\n<thead>\n<tr>\n<th>\ud3ec\ud1a0 \uc774\ub2c8\uc2dc\uc5d0\uc774\ud130<\/th>\n<th>Best fit in sachet-packaging ink work<\/th>\n<th>\uad6c\ub9e4\uc790\ub4e4\uc774 \uc65c \uadf8\uac83\uc744 \ud6c4\ubcf4\uc5d0 \uc62c\ub9ac\ub294\uac00<\/th>\n<th>\uc8fc\uc694 \uc8fc\uc758\uc0ac\ud56d<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\ud2f0\ud3ec\uc5d8<\/td>\n<td>White or colored sachet inks, low-yellowing graphics, liquid-formulation preference, broader offset or flexo language<\/td>\n<td>Longchang positions TPO-L as a liquid photoinitiator for low-yellowing and low-odor systems, with a relatively wide absorption range that can support white deep-layer systems, and directly lists flexo, inkjet, screen, and offset inks.<\/td>\n<td>It is not automatically the best first answer when the sachet project is really a cationic packaging-surface problem rather than an appearance-first ink screen.<\/td>\n<\/tr>\n<tr>\n<td>BMS<\/td>\n<td>Harder-to-cure sachet inks, flexographic packaging print, white or colored systems, UV-LED transition, OPV crossover<\/td>\n<td>\ub871\ucc3d\uc740 \ud50c\ub809\uc18c\uadf8\ub798\ud53d, \uc2a4\ud06c\ub9b0, \uc624\ud504\uc14b \ubc0f \uc789\ud06c\uc82f \uc789\ud06c\ub294 \ubb3c\ub860 \uc624\ubc84\ud504\ub9b0\ud2b8 \ubc14\ub2c8\uc2dc\uae4c\uc9c0 BMS\ub97c \uc801\uc6a9\ud558\uc5ec \ud45c\uba74 \uacbd\ud654 \ubc0f \uc544\ubbfc \uc0c1\uc2b9\uc81c\ub97c \uc0ac\uc6a9\ud55c \uc2ec\uce35 \uacbd\ud654, \uc800\ucde8\uc131, \ucd5c\uc18c\ud55c\uc758 \ud669\ubcc0 \ud604\uc0c1, \ubc31\uc0c9 \uc2dc\uc2a4\ud15c \uc801\ud569\uc131\uc744 \uac15\uc870\ud569\ub2c8\ub2e4.<\/td>\n<td>\uc544\ubbfc \ubcf4\uc870 \ud569\uc131\ubc95\uc740 \ub9cc\ub2a5 \uc6d0\ud074\ub9ad \ub300\uccb4\uc81c\ub85c \ucde8\uae09\ud574\uc11c\ub294 \uc548 \ub418\uba70, \uc81c\ud615 \ud328\ud0a4\uc9c0\ub85c\uc11c \ud3c9\uac00\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/td>\n<\/tr>\n<tr>\n<td>551<\/td>\n<td>Cleaner cationic sachet-packaging routes on plastic or foil-like packaging surfaces with strong adhesion and low shrinkage demands<\/td>\n<td>\ub871\ucc3d\uc740 \ud50c\ub77c\uc2a4\ud2f1 \ubc0f \uae08\uc18d \ud3ec\uc7a5 \ud45c\uba74\uc5d0 \ub192\uc740 \uc811\ucc29\ub825\uacfc \ub0ae\uc740 \uc218\ucd95\ub960\uc744 \uc694\uad6c\ud558\uba70, \uc0b0\uc18c \ubbfc\uac10\ub3c4\uac00 \ub0ae\uace0, \ud669\ubcc0 \ud604\uc0c1\uc774 \uc5c6\uace0, \uc774\uc5fc\uc774 \uc5c6\uace0, \ub0c4\uc0c8\uac00 \uc5c6\uc73c\uba70, 365\/385\/395nm LED \uacbd\ud654\uc5d0 \uc801\ud569\ud55c \uc591\uc774\uc628\uc131 UV \uacbd\ud654 \uc789\ud06c\uc5d0 \ub300\ud574 551\ubc88 \uc704\uce58\ub97c \uc120\uc815\ud588\uc2b5\ub2c8\ub2e4.<\/td>\n<td>\uc5ec\uc804\ud788 \uc591\uc774\uc628 \uacbd\ub85c\uc774\uae30 \ub54c\ubb38\uc5d0 \ud30c\uc7a5 \ud45c\uae30\ub9cc\uc73c\ub85c \uc120\ud0dd\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \uc804\uccb4 \uc218\uc9c0 \ud328\ud0a4\uc9c0, \uae30\ud310 \ud63c\ud569\ubb3c \ubc0f \uacbd\ud654 \uc124\uc815\uc744 \uc2e0\uc911\ud558\uac8c \ub9de\ucdb0\uc57c \ud569\ub2c8\ub2e4.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>TPO-L\uc774 \ub354 \uc801\ud569\ud55c \uacbd\uc6b0<\/h2>\n<p>TPO-L deserves the first sample slot when the sachet-packaging project is constrained by <strong>\ud770\uc0c9 \ucee4\ubc84\ub9ac\uc9c0, \uc0c9\uc0c1 \uc548\uc815\uc131 \ub610\ub294 \uc81c\ud615 \ud3b8\uc758\uc131<\/strong>\ub871\ucc3d\uc740 TPO-L\uc744 \ub2e4\uc74c\uacfc \uac19\uc774 \uc124\uba85\ud569\ub2c8\ub2e4. <strong>\uc561\uccb4 \uad11\uac1c\uc2dc\uc81c<\/strong> \uc801\ud569\ud55c <strong>\ud669\ubcc0 \ud604\uc0c1\uacfc \uc545\ucde8\uac00 \uc801\uc740 \uc2dc\uc2a4\ud15c<\/strong>\uc81c\ud488 \ud398\uc774\uc9c0\uc5d0\ub294 \ub610\ud55c \ube44\uad50\uc801 \ub113\uc740 \ud761\uc218 \ubc94\uc704\uac00 \uacbd\ud654 \uacfc\uc815\uc744 \uc9c0\uc6d0\ud55c\ub2e4\uace0 \uba85\uc2dc\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. <strong>\ubc31\uc0c9 \uc2ec\uce35 \uc2dc\uc2a4\ud15c<\/strong>.<\/p>\n<p>\ub530\ub77c\uc11c TPO-L\uc740 \ub2e4\uc74c\uacfc \uac19\uc740 \uacbd\uc6b0\uc5d0 \ud2b9\ud788 \ub9e4\ub825\uc801\uc785\ub2c8\ub2e4.<\/p>\n<ul>\n<li>the sachet graphics include <strong>\ud770\uc0c9 \ub610\ub294 \ub354 \ubd88\ud22c\uba85\ud55c \uc0c9\uc0c1 \uc601\uc5ed<\/strong>,<\/li>\n<li>the brand artwork is appearance-sensitive and cannot tolerate obvious yellowing drift,<\/li>\n<li>\uc81c\ud615 \uac1c\ubc1c\ud300\uc740 \ub2e4\uc74c\uc744 \uc6d0\ud569\ub2c8\ub2e4. <strong>\uc561\uccb4 \uacbd\ub85c<\/strong> \uc774\ub294 \uac1c\ubc1c \uc791\uc5c5\uc5d0\uc11c \ub2e4\ub8e8\uae30\uac00 \ub354 \uc27d\uc2b5\ub2c8\ub2e4.<\/li>\n<li>\uc778\uc1c4 \uc5b8\uc5b4\ub294 \uc774\ubbf8 \uc874\uc7ac\ud569\ub2c8\ub2e4. <strong>\ud50c\ub809\uc18c, \uc2a4\ud06c\ub9b0, \uc624\ud504\uc14b \ub610\ub294 \uc789\ud06c\uc82f<\/strong> workflows,<\/li>\n<li>\uad6c\ub9e4\uc790\ub294 \ubcf4\ub2e4 \uc804\ubb38\uc801\uc778 \uc591\uc774\uc628 \ud328\ud0a4\uc9c0\ub85c \ub118\uc5b4\uac00\uae30 \uc804\uc5d0 \uc2e4\uc6a9\uc801\uc778 \ubc29\ubc95\uc744 \uc6d0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<p>For sachet work that is still largely an ink-selection problem rather than a full cationic packaging redesign, TPO-L is often the strongest first answer for appearance-sensitive print.<\/p>\n<h2>BMS\uac00 \ub354 \uc801\ud569\ud55c \uacbd\uc6b0<\/h2>\n<p>BMS becomes more attractive when the buyer is solving a broader production problem instead of only a basic sachet-ink cure problem. Longchang describes BMS as a <strong>\ub178\ub9ac\uc26c \uc720\ud615 II \uad11\uac1c\uc2dc\uc81c<\/strong> \uc804\ub2ec\ud558\ub294 <strong>\ub192\uc740 \ubc18\uc751\uc131, \ud45c\uba74 \uacbd\ud654 \ubc0f \uc2ec\uce35 \uacbd\ud654<\/strong> UV \ubc0f LED \uacbd\ud654\ud615 \uc81c\ud615\uc5d0 \uc544\ubbfc \uc0c1\uc2b9\uc81c\ub97c \ucca8\uac00\ud558\uc5ec \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \ud68c\uc0ac \ud398\uc774\uc9c0\uc5d0\uc11c\ub3c4 \ud574\ub2f9 \uc81c\ud488\uc744 \ud2b9\uc815 \uc6a9\ub3c4\uc5d0 \ub9de\uac8c \uc9c1\uc811\uc801\uc73c\ub85c \uc18c\uac1c\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. <strong>\ud50c\ub809\uc18c\uadf8\ub798\ud53d, \uc2a4\ud06c\ub9b0, \uc624\ud504\uc14b \ubc0f \uc789\ud06c\uc82f \uc789\ud06c<\/strong>\uadf8\ub9ac\uace0 ~\uc744 \uc704\ud574 <strong>\uc624\ubc84\ud504\ub9b0\ud2b8 \ubc14\ub2c8\uc2dc<\/strong>.<\/p>\n<p>That matters in sachet packaging because flexible packs often combine graphics pressure, high line speed, and finish sensitivity. BMS deserves earlier screening when:<\/p>\n<ul>\n<li>the sachet line behaves like a <strong>\ud50c\ub809\uc18c\uadf8\ub798\ud53d \ud3ec\uc7a5 \uc778\uc1c4 \uacf5\uc815<\/strong>,<\/li>\n<li>\uc789\ud06c \uc2dc\uc2a4\ud15c\uc5d0\ub294 \ub2e4\uc74c\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4. <strong>\ubc31\uc0c9 \uc774\uc0b0\ud654\ud2f0\ud0c0\ub284 \uc2dc\uc2a4\ud15c<\/strong> \ub610\ub294 \uae68\ub057\ud558\uac8c \uacbd\ud654\uc2dc\ud0a4\uae30 \uc5b4\ub824\uc6b4 \ub2e4\ub978 \uc0c9\uc0c1\uc758 \uc2dc\uc2a4\ud15c,<\/li>\n<li>\uadf8 \uc2dd\ubb3c\uc740 \ub354 \ub098\uc740 \uade0\ud615\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. <strong>\ud45c\uba74 \uac74\uc870 \ubc0f \uc644\uc804 \uacbd\ud654<\/strong>,<\/li>\n<li>\uad6c\ub9e4\uc790\ub294 \uc591\ucabd \ubaa8\ub450\ub97c \ub9cc\uc871\uc2dc\ud0ac \uc218 \uc788\ub294 \uacbd\ub85c\ub97c \uc6d0\ud569\ub2c8\ub2e4. <strong>\uc804\ud1b5\uc801\uc778 \uc218\uc740 \ub7a8\ud504\uc640 UV-LED<\/strong>,<\/li>\n<li>or the sachet project overlaps with <strong>\uc624\ubc84\ud504\ub9b0\ud2b8 \ubc14\ub2c8\uc2dc \ub610\ub294 \ub9c8\uac10 \ub808\uc774\uc5b4 \uacb0\uc815<\/strong>.<\/li>\n<\/ul>\n<p>For harder sachet jobs, BMS is often the better commercial answer than forcing a simpler benchmark route to do too much work.<\/p>\n<h2>551\uc774 \ub354 \uc801\ud569\ud55c \uacbd\uc6b0<\/h2>\n<p>551 should move up when the sachet-packaging job behaves less like a routine film-graphics problem and more like a <strong>\uccad\uc815 \uc591\uc774\uc628 \ud3ec\uc7a5 \ud45c\uba74 \uacbd\ub85c<\/strong>Longchang\uc740 551\uc744 \uc591\uc774\uc628\uc131 \uad11\uac1c\uc2dc\uc81c\ub85c \uc124\uba85\ud569\ub2c8\ub2e4. <strong>\ub192\uc740 \uad11\uac1c\uc2dc \ud65c\uc131, \uc6b0\uc218\ud55c \ud45c\uba74 \uac74\uc870, \ud669\ubcc0 \ud604\uc0c1 \uc5c6\uc74c, \uc774\uc5fc \ud604\uc0c1 \uc5c6\uc74c, \ubb34\ucde8<\/strong>\uac19\uc740 \ud398\uc774\uc9c0\uc5d0\ub294 \ud761\uc218\uc728\uc774 \ub2e4\uc74c\uacfc \uac19\ub2e4\uace0\ub3c4 \ub098\uc640 \uc788\uc2b5\ub2c8\ub2e4. <strong>365, 385, 395 nm<\/strong> \uadf8\ub9ac\uace0 \ub2e4\uc74c\uacfc \uac19\uc740 \uc6a9\ub3c4\ub85c \uc0ac\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4: <strong>LED \uacbd\ud654<\/strong>.<\/p>\n<p>More importantly for sachet packaging, Longchang directly places 551 in <strong>\ud50c\ub77c\uc2a4\ud2f1 \ubc0f \uae08\uc18d \ud3ec\uc7a5 \ud45c\uba74\uc5d0 \ub192\uc740 \uc811\ucc29\ub825\uacfc \ub0ae\uc740 \uc218\ucd95\ub960\uc774 \uc694\uad6c\ub418\ub294 \uc778\uc1c4 \uc751\uc6a9 \ubd84\uc57c\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4.<\/strong>\ud574\ub2f9 \ud398\uc774\uc9c0\uc5d0\ub294 \ub610\ud55c \ub2e4\uc74c\uacfc \uac19\uc740 \ub0b4\uc6a9\uc774 \uc788\uc2b5\ub2c8\ub2e4. <strong>\ub0ae\uc740 \uc0b0\uc18c \ubbfc\uac10\ub3c4\uc640 \ud0c1\uc6d4\ud55c \ud45c\uba74 \uacbd\ud654 \uc131\ub2a5<\/strong>\ub530\ub77c\uc11c 551\uc740 \ub2e4\uc74c\uacfc \uac19\uc740 \uacbd\uc6b0\uc5d0 \ud2b9\ud788 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n<ul>\n<li>the sachet structure pushes the buyer toward a <strong>\ub354\uc6b1 \uae4c\ub2e4\ub85c\uc6b4 \ud3ec\uc7a5 \ud45c\uba74 \uacb0\uc815<\/strong>,<\/li>\n<li>high adhesion and lower shrinkage matter on film or foil-faced packages,<\/li>\n<li>\ud328\ud0a4\uc9c0 \ud615\uc2dd\uc740 \ub354 \ub9ce\uc740 \uc555\ub825\uc744 \uac00\ud569\ub2c8\ub2e4. <strong>\ub0c4\uc0c8\uac00 \uc801\uace0 \ub354 \uae68\ub057\ud55c \uce58\ub8cc\ubc95<\/strong>,<\/li>\n<li>\uc120\uc774 \uc810\uc810 \ub113\uc5b4\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4. <strong>365\/385\/395nm LED \uc9c0\uc6d0 \uc0dd\uc0b0<\/strong>,<\/li>\n<li>\ub610\ub294 \uad6c\ub9e4\uc790\uac00 \ub871\ucc3d\uc774 \uc2dd\ud488 \ud3ec\uc7a5 \uc791\uc5c5\uc5d0\uc11c 550\uc744 \ub300\uccb4\ud560 \uc218 \uc788\ub294 \uac00\ub2a5\ud55c \uacbd\ub85c\ub85c \uc81c\uc2dc\ud558\ub294 \uacbd\ub85c\ub97c \uc6d0\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<p>If the sachet project is really about packaging-surface performance, not only visual graphics, 551 often deserves to move ahead of a routine free-radical first screen.<\/p>\n<h2>\uad6c\ub9e4\uc790\ub294 \uc5b4\ub5bb\uac8c \uc120\ud0dd\ud574\uc57c \ud560\uae4c\uc694?<\/h2>\n<ol>\n<li><strong>Start with the real job type.<\/strong> If the sachet project is mainly a white or colored film-graphics problem, TPO-L or BMS may be the right first routes. If it is a tighter packaging-surface and cleanliness problem, 551 deserves earlier attention.<\/li>\n<li><strong>\uc0c9\uc18c \uce68\ucc29 \uc815\ub3c4\ub97c \uc815\ud655\ud558\uac8c \ud655\uc778\ud558\uc138\uc694.<\/strong> White-heavy or more opaque sachet graphics should not use exactly the same first shortlist as clear or lightly colored systems.<\/li>\n<li><strong>\ud45c\uba74 \uacbd\ud654\uc640 \uc2ec\ubd80 \uacbd\ud654\ub97c \ubd84\ub9ac\ud558\uc2ed\uc2dc\uc624.<\/strong> On small flexible packs, a surface that looks acceptable is not always the same as a package that will behave cleanly through filling, sealing, transport, and handling.<\/li>\n<li><strong>\uc778\uc1c4 \uacbd\ub85c \uc801\ud569\uc131\uc744 \uc2dc\uac01\uc801\uc73c\ub85c \ud655\uc778\ud558\uc138\uc694.<\/strong> Flexographic packaging print, OPV crossover work, and cationic packaging lines reward different first assumptions.<\/li>\n<li><strong>\uccab \ubc88\uc9f8 \uc0d8\ud50c \ub77c\uc6b4\ub4dc\ub97c \uaf49 \uc870\uc5ec \uc720\uc9c0\ud558\uc138\uc694.<\/strong> \uc11c\ub85c \uc798 \ub9de\ub294 \ub450\uc138 \uac00\uc9c0 \uacbd\ub85c\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \uc5ec\ub7ec \uad00\ub828 \uc5c6\ub294 \uad11\uac1c\uc2dc\uc81c\ub97c \ud558\ub098\uc758 \ud14c\uc2a4\ud2b8 \uc138\ud2b8\uc5d0 \ud63c\ud569\ud558\ub294 \uac83\ubcf4\ub2e4 \ub354 \uba85\ud655\ud55c \uacb0\uacfc\ub97c \uc81c\uacf5\ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ol>\n<h2>\ucd94\ucc9c \ub871\ucc3d \uc81c\ud488 \uacbd\ub85c<\/h2>\n<ul>\n<li><a href=\"https:\/\/longchangchemical.com\/ko\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">\uad11\uac1c\uc2dc\uc81c TPO-L<\/a> for low-yellowing white or colored sachet inks and easier liquid-formulation handling<\/li>\n<li><a href=\"https:\/\/longchangchemical.com\/ko\/product\/photoinitiator-bms\/\">\uad11\uac1c\uc2dc\uc81c BMS<\/a> \ud45c\uba74 \ubc0f \uc2ec\uce35 \uacbd\ud654 \uade0\ud615, \ud50c\ub809\uc18c\uadf8\ub798\ud53d \ud3ec\uc7a5 \uc778\uc1c4 \ubc0f \ub354 \ub2e8\ub2e8\ud55c \ubc31\uc0c9 \uc2dc\uc2a4\ud15c\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4.<\/li>\n<li><a href=\"https:\/\/longchangchemical.com\/ko\/product\/photoinitiator-551-cas-591773-90-9\/\">\uad11\uac1c\uc2dc\uc81c 551<\/a> \ub192\uc740 \uc811\ucc29\ub825, \ub0ae\uc740 \uc218\ucd95\ub960, \uadf8\ub9ac\uace0 \ub354\uc6b1 \ud3ed\ub113\uc740 LED \ud638\ud658 \ubc94\uc704\ub97c \uac16\ucd98 \ub354\uc6b1 \uae68\ub057\ud55c \uc591\uc774\uc628\uc131 \ud328\ud0a4\uc9d5 \ud45c\uba74 \uad6c\ud604<\/li>\n<\/ul>\n<p>\ub3d9\uc77c\ud55c \uc0c1\uc5c5 \ud074\ub7ec\uc2a4\ud130 \uad00\ub828 \uc790\ub8cc:<\/p>\n<ul>\n<li><a href=\"https:\/\/longchangchemical.com\/ko\/packaging-ink-photoinitiator\/\">\ud3ec\uc7a5\uc6a9 \uc789\ud06c\uc6a9 \uad11\uac1c\uc2dc\uc81c<\/a><\/li>\n<li><a href=\"https:\/\/longchangchemical.com\/ko\/plastic-packaging-ink-photoinitiator\/\">\ud50c\ub77c\uc2a4\ud2f1 \ud3ec\uc7a5 \uc789\ud06c\uc6a9 \uad11\uac1c\uc2dc\uc81c<\/a><\/li>\n<li><a href=\"https:\/\/longchangchemical.com\/ko\/food-packaging-ink-photoinitiator\/\">\uc2dd\ud488 \ud3ec\uc7a5 \uc789\ud06c\uc6a9 \uad11\uac1c\uc2dc\uc81c<\/a><\/li>\n<li><a href=\"https:\/\/longchangchemical.com\/ko\/blister-foil-photoinitiator\/\">Photoinitiator for Blister Foil Printing Inks<\/a><\/li>\n<li><a href=\"https:\/\/longchangchemical.com\/ko\/uv-flexo-ink-photoinitiator\/\">Photoinitiator for UV Flexo Ink<\/a><\/li>\n<\/ul>\n<h2>\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n<h3>Which photoinitiator is best for sachet packaging inks?<\/h3>\n<p>There is no single best answer. In Longchang\u2019s current product set, TPO-L is a strong first route for low-yellowing white or colored sachet graphics, BMS is the stronger balanced route for harder cure and flexographic packaging-print pressure, and 551 is the more specialized cationic answer when packaging-surface fit, adhesion, low shrinkage, and cleaner cure become the main priorities.<\/p>\n<h3>\uad6c\ub9e4\uc790\ub294 \uc5b8\uc81c BMS \ub300\uc2e0 TPO-L\ubd80\ud130 \uc2dc\uc791\ud574\uc57c \ud560\uae4c\uc694?<\/h3>\n<p>Start with TPO-L earlier when the sachet project is appearance-sensitive, white-heavy, or benefits from a liquid low-yellowing route. Start with BMS when the line needs a stronger surface-and-depth cure balance, especially around flexographic packaging print or harder white systems.<\/p>\n<h3>Why would 551 appear in a sachet-ink shortlist if the page also compares free-radical routes?<\/h3>\n<p>Because some sachet projects are not just ordinary film-graphics jobs. When the pack behaves more like a packaging-surface problem, with higher pressure on adhesion, shrinkage, odor, and cleaner cationic cure, 551 becomes commercially relevant.<\/p>\n<h3>Does sachet packaging usually mean laminated flexible materials?<\/h3>\n<p>General industry packaging references commonly describe sachets as small flexible packets built from laminated film, foil, paper-based combinations, or similar barrier structures. Buyers should still confirm the actual target structure before finalizing the photoinitiator route.<\/p>\n<h2>\ub2e4\uc74c \ub2e8\uacc4<\/h2>\n<p>If your sachet-packaging project is mainly an appearance-sensitive white or colored print job, start by screening <a href=\"https:\/\/longchangchemical.com\/ko\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">\ud2f0\ud3ec\uc5d8<\/a>\ub77c\uc778\uc774 \uacbd\ud654 \uade0\ud615\uc774\ub098 \ud50c\ub809\uc18c\uadf8\ub798\ud53d \ud3ec\uc7a5 \uc778\uc1c4 \uc555\ub825 \ubb38\uc81c\ub85c \uc5b4\ub824\uc6c0\uc744 \uacaa\ub294 \uacbd\uc6b0, \uc774\ub3d9\ud558\uc2ed\uc2dc\uc624. <a href=\"https:\/\/longchangchemical.com\/ko\/product\/photoinitiator-bms\/\">BMS<\/a> higher. If the pack format is really a cleaner cationic packaging-surface decision, especially on plastic or foil-like packaging faces, bring <a href=\"https:\/\/longchangchemical.com\/ko\/product\/photoinitiator-551-cas-591773-90-9\/\">551<\/a> \uccab \ubc88\uc9f8 \uc0d8\ud50c \ub77c\uc6b4\ub4dc\uc5d0 \uc870\uae30\uc5d0 \ucc38\uc5ec\ud558\uc5ec \uc2e4\uc81c \uae30\ud310, \uadf8\ub798\ud53d \ubd80\ud558 \ubc0f \uacbd\ud654 \uae30\uac04\uc5d0 \ub9de\ucdb0 \uac80\uc99d\ud569\ub2c8\ub2e4.<\/p>","protected":false},"excerpt":{"rendered":"<p>A practical B2B guide to choosing a photoinitiator for sachet packaging inks by comparing TPO-L, BMS, and 551 for laminated film or foil print, low yellowing, cure balance, low odor, and packaging-surface fit.<\/p>","protected":false},"author":6,"featured_media":10244,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10243","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Photoinitiator for Sachet Packaging Inks: TPO-L vs BMS vs 551<\/title>\n<meta name=\"description\" content=\"Learn how to choose a photoinitiator for sachet packaging inks by comparing TPO-L, BMS, and 551 for laminated film or foil print, low odor, cure balance, and packaging-surface fit.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangchemical.com\/ko\/sachet-ink-photoinitiator\/\" 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