{"id":10611,"date":"2026-07-14T00:00:22","date_gmt":"2026-07-14T00:00:22","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10611"},"modified":"2026-08-08T05:40:11","modified_gmt":"2026-08-08T05:40:11","slug":"screen-ink-additives","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/it\/screen-ink-additives\/","title":{"rendered":"Screen Ink Additives: Wetting, Leveling & Foam Control"},"content":{"rendered":"

Choose screen ink additives by the first failed stage: substrate wetting, printed-film leveling, or foam control.<\/strong> CHLUMIWE\u00ae 3280 is the screen-ink wetting route, CHLUMILE\u00ae 3432 is the broad leveling route, and CHLUMIAF\u00ae 3062 is the printing-ink defoamer route. Every trial must preserve mesh release, edge definition, opacity, cure, and adhesion.<\/p>\n

Before changing chemistry, stabilize mesh and stencil, off-contact, squeegee hardness\/angle\/speed, flood stroke, ink temperature and viscosity, substrate treatment, film deposit, flash, and cure. An additive cannot reliably repair a damaged stencil, poor snap-off, uncontrolled rheology, or insufficient radiation\/thermal drying.<\/p>\n

Screen ink additive decision map<\/h2>\n
\n\n\n\n\n\n\n\n
First repeatable failure<\/th>\nFirst route<\/th>\nPrint guardrail<\/th>\n<\/tr>\n<\/thead>\n
Ink pulls back, leaves voids, or wets the substrate unevenly<\/td>\nCHLUMIWE\u00ae 3280<\/td>\nStencil\/mesh release, edge definition, foam, adhesion, and blocking<\/td>\n<\/tr>\n
Deposit transfers but retains flow lines, orange peel, or uneven gloss<\/td>\nCHLUMILE\u00ae 3432<\/td>\nPrint height, line resolution, slumping, overprint, and recoatability<\/td>\n<\/tr>\n
Mixing or printing produces persistent bubbles or pinholes<\/td>\nCHLUMIAF\u00ae 3062<\/td>\nCraters, opacity, compatibility, and storage stability<\/td>\n<\/tr>\n<\/tbody>\n<\/table>
Original screen-print diagnostic map: fix the earliest failed stage without sacrificing transfer geometry or downstream performance.<\/figcaption><\/figure>\n\n\n\n\n\n\n\n
Prodotto<\/th>\nPublished system fit<\/th>\nSupplier starting guidance<\/th>\nBest first-screen role<\/th>\n<\/tr>\n<\/thead>\n
CHLUMIWE\u00ae 3280<\/strong><\/a><\/td>\nUV, solvent, and water-based; screen-printing ink wetting agent<\/td>\n0.2\u20133%; grind, stir, or post-add<\/td>\nDifficult-substrate wetting with a process-specific product starting point<\/td>\n<\/tr>\n
CHLUMILE\u00ae 3432<\/strong><\/a><\/td>\nUV, a base di solventi e a base d'acqua<\/td>\n0.05\u20131%; any stage<\/td>\nLeveling and printed-surface appearance after transfer is stable<\/td>\n<\/tr>\n
CHLUMIAF\u00ae 3062<\/strong><\/a><\/td>\nUV, a base di solventi e a base d'acqua<\/td>\n0.1\u20130.5% for printing inks<\/td>\nFoam and microbubble control with compatibility checks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Use 3280 when substrate wetting fails<\/h2>\n

3280 is a polyether-modified polysiloxane whose product page explicitly includes screen-printing ink wetting. It is listed for water, solvent, and UV systems with a 0.2\u20133% starting range and surface tension no more than 25 mN\/m.<\/p>\n

Verify substrate treatment, cleanliness, and ink rheology before dosing. Compare a blank with a short ladder and record wetting voids, edge definition, mesh\/stencil release, foam, opacity, print height, blocking, adhesion, and downstream coating or lamination. The wider supplier range is not a reason to begin at the maximum.<\/p>\n

Use 3432 when the deposit needs controlled leveling<\/h2>\n

3432 should move first when transfer is already complete but the deposited film retains flow lines, orange peel, or uneven gloss. It is 100% active and listed for water, solvent, and UV systems at 0.05\u20131%.<\/p>\n

Screen printing often relies on controlled rheology and deposit height. Excess flow can reduce edge sharpness, close fine features, or increase slumping. Measure leveling together with line\/halftone resolution, print height, opacity, sag, tack, cure, adhesion, and recoatability.<\/p>\n

Use 3062 when bubbles are the first failure<\/h2>\n

3062 is a nonionic, 100% active polyether-modified polysiloxane with a published 0.1\u20130.5% printing-ink range. Diagnose whether air enters during pigment dispersion, let-down, recirculation, squeegee action, or substrate porosity before testing it.<\/p>\n

Use a defined agitation or print cycle and record foam generation, foam decay, microbubbles, pinholes, craters, opacity, gloss, density, and storage stability. If the product is solvent-diluted, the supplier calls for separate stability and defoaming-performance checks.<\/p>\n

Build a repeatable screen-print trial<\/h2>\n
    \n
  1. Lock the ink.<\/strong> Hold resin, pigment, solids, pH where relevant, viscosity\/rheology method, and temperature constant.<\/li>\n
  2. Lock the screen.<\/strong> Use the same mesh count, thread, tension, stencil thickness, image, and cleaning history.<\/li>\n
  3. Lock printing.<\/strong> Fix off-contact, squeegee hardness\/angle\/speed\/pressure, flood stroke, print passes, and dwell.<\/li>\n
  4. Lock cure.<\/strong> Record flash, oven or UV source, irradiance\/dose where applicable, and line speed.<\/li>\n
  5. Change one route at a time.<\/strong> Compare a blank and two or three levels inside current supplier guidance.<\/li>\n<\/ol>\n

    Measure transfer, cure, and end use<\/h2>\n

    Record screen release, ink buildup, line and halftone resolution, edge definition, deposit thickness, opacity\/density, wetting voids, foam, pinholes, craters, leveling, gloss, tack, cure, adhesion, flexibility, blocking, rub\/scuff, and overprint or laminate performance. Repeat after production-relevant ink dwell on screen and after storage.<\/p>\n

    ASTM D5264<\/a> provides a comparative abrasion method for printed materials, ASTM D3359<\/a> describes tape adhesion ratings on suitable surfaces, and ASTM D5402<\/a> describes solvent-rub assessment for chemically curing organic coatings. D5402 also cautions that solvent resistance alone does not prove full cure. Choose methods suitable for the ink\/substrate and define conditioning and pass\/fail criteria.<\/p>\n

    Protect packaging and restricted-use requirements<\/h2>\n

    For packaging, labels, or sensitive articles, review print side, cure\/dry conditions, set-off, barrier, customer exclusions, migration risk, and regional requirements. The EuPIA raw-material selection framework<\/a> explains why suitability of one raw material does not by itself establish compliance of the finished ink or printed article.<\/p>\n

    Obtain current regulatory statements and test the finished construction. Do not infer food-contact suitability, low migration, or medical suitability from an additive family name.<\/p>\n

    Common screen-print troubleshooting patterns<\/h2>\n

    Wetting improves but fine edges spread<\/h3>\n

    Reduce 3280 and recheck viscosity\/rheology, stencil, off-contact, squeegee settings, substrate energy, and cure timing. Wetting and resolution must pass together.<\/p>\n

    Leveling improves but deposit height falls<\/h3>\n

    Reduce 3432 and review the rheology target. A surface-control additive cannot be approved if it changes the geometry needed for opacity, conductivity, or tactile build.<\/p>\n

    Foam falls but craters appear<\/h3>\n

    Reduce 3062 and review dispersion, compatibility, contamination, and addition order. Confirm the result after ink dwell and storage, not only immediately after mixing.<\/p>\n

    Related printing-ink guides<\/h2>\n

    Use the gravure ink guide<\/a> for engraved-cylinder transfer, the flexographic ink guide<\/a> for anilox\/flexo conditions, or the UV ink photoinitiator guide<\/a> when spectral overlap and cure depth are the first problem.<\/p>\n

    Request a screen ink additive comparison<\/h2>\n

    Send the resin and carrier, pigment, solids and rheology data, substrate and treatment, mesh\/stencil, squeegee and print settings, deposit thickness, flash\/cure, defect photos, current additives, and required adhesion\/rub\/overprint tests. Ask Longchang Chemical for a 3280, 3432, or 3062 screen-ink trial<\/strong><\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

    Scopri come scegliere gli additivi per gli inchiostri serigrafici separando la bagnabilit\u00e0 del substrato, la livellatura e lo scorrimento della superficie di stampa e la disaerazione in fase di processo lungo i percorsi CHLUMICRYL\u00ae.<\/p>","protected":false},"author":6,"featured_media":10612,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10611","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"\nScreen Ink Additives: Wetting, Leveling & Foam Control<\/title>\n<meta name=\"description\" content=\"Choose screen ink additives for substrate wetting, print leveling or foam control. 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