{"id":10719,"date":"2026-07-18T00:00:25","date_gmt":"2026-07-18T00:00:25","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=10719"},"modified":"2026-08-08T04:27:37","modified_gmt":"2026-08-08T04:27:37","slug":"2100-vs-3280-vs-3501","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/nl\/2100-vs-3280-vs-3501\/","title":{"rendered":"2100 vs 3280 vs 3501: Ink Additive Selection Guide"},"content":{"rendered":"

CHLUMIWE\u00ae 2100, CHLUMIWE\u00ae 3280, and CHLUMIAG\u00ae 3501 solve different stages of an ink-surface problem.<\/strong> Start with 2100 for a broad wetting benchmark, 3280 when the difficult substrate or screen-ink wetting requirement is already clear, and 3501 when laydown is acceptable but anti-sticking or downstream print handling still fails.<\/p>\n

For this comparison, use the matching CHLUMIWE\u00ae 2100 technical page<\/a>. Its WordPress URL retains \u201cchlumiwe-100,\u201d while the visible product title and technical data identify the grade as CHLUMIWE\u00ae 2100.<\/p>\n

2100 vs 3280 vs 3501 decision map<\/h2>\n
\n\n\n\n\n\n\n\n
First confirmed failure<\/th>\nBegin met<\/th>\nPrimary evidence to collect<\/th>\n<\/tr>\n<\/thead>\n
General poor spread or coverage across packaging surfaces<\/td>\nCHLUMIWE\u00ae 2100<\/td>\nContact\/coverage, adhesion, print density, foam<\/td>\n<\/tr>\n
Known difficult, smooth, coated, or screen-print substrate<\/td>\nCHLUMIWE\u00ae 3280<\/td>\nDynamic wetting, pinholes, leveling, foam, adhesion<\/td>\n<\/tr>\n
Ink wets acceptably but sticks, marks, or releases poorly<\/td>\nCHLUMIAG\u00ae 3501<\/td>\nRub, blocking, friction, tape\/lamination\/overprint<\/td>\n<\/tr>\n<\/tbody>\n<\/table>
Original comparison map: distinguish ink-to-substrate wetting from the behavior of the dried print surface.<\/figcaption><\/figure>\n\n\n\n\n\n\n\n
Product<\/th>\nSupplier starting range<\/th>\nPublished system fit<\/th>\nBest first-screen use<\/th>\n<\/tr>\n<\/thead>\n
CHLUMIWE\u00ae 2100<\/strong><\/a><\/td>\n0.1\u20131% on total formulation<\/td>\nUV, solvent, and water-based; broad dilution options<\/td>\nGeneral wetting\/anti-sticking benchmark where the exact difficult-substrate mechanism is not yet isolated<\/td>\n<\/tr>\n
CHLUMIWE\u00ae 3280<\/strong><\/a><\/td>\n0.2\u20133%<\/td>\nUV, solvent, and water-based; polyether-modified polysiloxane<\/td>\nDifficult-substrate or screen-ink wetting; supplier data lists surface tension \u226425 mN\/m at 25\u00b0C<\/td>\n<\/tr>\n
CHLUMIAG\u00ae 3501<\/strong><\/a><\/td>\nRequest the current supplier recommendation<\/td>\nUV, solvent, and water-based; can be added at any stage or later<\/td>\nAnti-sticking and print-side handling after wetting and film formation are already acceptable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Use CHLUMIWE\u00ae 2100 as the broad wetting benchmark<\/h2>\n

2100 should enter first when the ink shows general spread or coverage difficulty across film, plastic, coated paper, or another packaging surface, but the team has not yet isolated a narrower mechanism. The supplier lists flexible addition during grinding, stirring, or after production and dilution with water, alcohols, alkanes, or aromatics.<\/p>\n

Because the product is also positioned for anti-sticking, record both wetting and dried-film behavior. Do not approve it from a drawdown alone: check print density, pinholes, foam, adhesion, rub, blocking, and later lamination or overprinting.<\/p>\n

Use CHLUMIWE\u00ae 3280 for a defined difficult-substrate problem<\/h2>\n

3280 belongs earlier when the substrate is already known to be difficult, smooth, coated, or linked to screen-print wetting. Its wider published dosage range is not permission to start high. Use a compact ladder and measure whether coverage improves without foam, cratering, over-wetting, intercoat-adhesion loss, or print defects.<\/p>\n

Surface tension of the additive is not the same as dynamic wetting of the complete ink. Evaluate the actual resin, solvent\/water balance, pigment, viscosity, printing speed, substrate treatment, and time between treatment and printing.<\/p>\n

Use CHLUMIAG\u00ae 3501 when the failure occurs after laydown<\/h2>\n

Move 3501 forward when the ink already wets the substrate and prints evenly, but the dried surface blocks, marks, drags, or interferes with release. Reproduce the actual contact face, roll\/stack pressure, temperature, dwell time, and conditioning before judging the result.<\/p>\n

Request the current dosage guidance because the public product page does not provide a specific range. Measure rub, friction, blocking, adhesion, tape, overprint, lamination, gluing, and heat-seal behavior relevant to the final package.<\/p>\n

A practical ink-additive comparison<\/h2>\n
    \n
  1. Characterize the substrate.<\/strong> Record polymer\/paper type, coating, surface treatment, surface energy method, age after treatment, cleanliness, and storage.<\/li>\n
  2. Freeze the ink.<\/strong> Hold resin, pigment, solids, pH, viscosity, solvent\/water balance, foam control, and print method constant.<\/li>\n
  3. Run separate dosage ladders.<\/strong> Use one product per ladder and document addition stage, dilution, shear, and hold time.<\/li>\n
  4. Measure the wet print.<\/strong> Compare coverage, pinholes, craters, leveling, foam, transfer, density, and edge definition at production speed.<\/li>\n
  5. Measure the finished construction.<\/strong> Compare adhesion, rub, friction, blocking, overprint, lamination, gluing, sealing, and aging.<\/li>\n<\/ol>\n

    ASTM D5264<\/a> covers Sutherland-rub testing of printed materials. ASTM D1894<\/a> covers static and kinetic friction for plastic film and sheeting, and ASTM D3359<\/a> covers tape ratings for coating adhesion. Select only methods applicable to the construction and agree receptor, load, cycles, conditioning, film thickness, and pass limits with the converter.<\/p>\n

    Common comparison mistakes<\/h2>\n

    Choosing the product with the lowest published surface tension<\/h3>\n

    That single number does not predict dynamic wetting, foam, adhesion, or print quality in the complete ink. Test the real formulation on the real substrate at production speed.<\/p>\n

    Testing 3501 to fix unprinted areas<\/h3>\n

    If the ink never wets or transfers cleanly, diagnose wetting first and compare 2100 or 3280. 3501 becomes more relevant after laydown when handling or anti-sticking is the problem.<\/p>\n

    Approving improved rub without checking lamination<\/h3>\n

    A surface-active additive can improve handling while reducing the bond needed for lamination, overprint, adhesive, or sealing. Challenge the complete package construction.<\/p>\n

    Ignoring foam after adding a wetting agent<\/h3>\n

    Observe foam during mixing, recirculation, transfer, and printing. If a defoamer is added, run it as a controlled second factor rather than changing both products without a design.<\/p>\n

    Food-packaging caution<\/h2>\n

    This comparison does not establish food-contact compliance. Review current EuPIA raw-material selection guidance<\/a>, obtain composition\/regulatory statements, and validate migration and set-off for the complete printed structure, intended food, time, temperature, and jurisdiction.<\/p>\n

    Frequently asked questions<\/h2>\n

    What is the main difference between 2100 and 3280?<\/h3>\n

    Use 2100 as the broader first wetting benchmark. Move 3280 ahead when the difficult-substrate or screen-ink wetting requirement is already defined.<\/p>\n

    When should 3501 be tested first?<\/h3>\n

    When wetting and print formation already pass, but blocking, release, friction, rub, or downstream handling remains the commercial failure.<\/p>\n

    Why does the 2100 product URL contain \u201cchlumiwe-100\u201d?<\/h3>\n

    That is the current WordPress slug of the CHLUMIWE\u00ae 2100 product page. The visible product title and technical data identify it as 2100.<\/p>\n

    Request a controlled ink-additive shortlist<\/h2>\n

    Send the resin and carrier, pigment, solids, pH\/viscosity, substrate and treatment, printing method\/speed, defect photos, current additive package, rub\/blocking result, and downstream conversion steps. Ask Longchang Chemical for a 2100, 3280, or 3501 trial plan<\/strong><\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

    Compare CHLUMIWE\u00ae 2100, CHLUMIWE\u00ae 3280, and CHLUMIAG\u00ae 3501 by separating film-surface wetting, difficult-substrate paper or screen-ink wetting, and broader anti-sticking or print-side compatibility work.<\/p>","protected":false},"author":6,"featured_media":10720,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10719","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"\n2100 vs 3280 vs 3501: Ink Additive Selection Guide<\/title>\n<meta name=\"description\" content=\"Compare CHLUMIWE 2100, 3280 and CHLUMIAG 3501 for broad wetting, difficult substrates or anti-sticking and print handling.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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