CHLUMIWE® 2100, CHLUMIWE® 3280, and CHLUMIAG® 3501 solve different stages of an ink-surface problem. 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.
For this comparison, use the matching CHLUMIWE® 2100 technical page. Its WordPress URL retains “chlumiwe-100,” while the visible product title and technical data identify the grade as CHLUMIWE® 2100.
2100 vs 3280 vs 3501 decision map
| First confirmed failure | Start with | Primary evidence to collect |
|---|---|---|
| General poor spread or coverage across packaging surfaces | CHLUMIWE® 2100 | Contact/coverage, adhesion, print density, foam |
| Known difficult, smooth, coated, or screen-print substrate | CHLUMIWE® 3280 | Dynamic wetting, pinholes, leveling, foam, adhesion |
| Ink wets acceptably but sticks, marks, or releases poorly | 클루미아그® 3501 | Rub, blocking, friction, tape/lamination/overprint |
| 제품 | Supplier starting range | Published system fit | Best first-screen use |
|---|---|---|---|
| CHLUMIWE® 2100 | 0.1–1% on total formulation | UV, solvent, and water-based; broad dilution options | General wetting/anti-sticking benchmark where the exact difficult-substrate mechanism is not yet isolated |
| CHLUMIWE® 3280 | 0.2–3% | UV, solvent, and water-based; polyether-modified polysiloxane | Difficult-substrate or screen-ink wetting; supplier data lists surface tension ≤25 mN/m at 25°C |
| 클루미아그® 3501 | Request the current supplier recommendation | UV, solvent, and water-based; can be added at any stage or later | Anti-sticking and print-side handling after wetting and film formation are already acceptable |
Use CHLUMIWE® 2100 as the broad wetting benchmark
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.
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.
Use CHLUMIWE® 3280 for a defined difficult-substrate problem
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.
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.
Use CHLUMIAG® 3501 when the failure occurs after laydown
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.
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.
A practical ink-additive comparison
- Characterize the substrate. Record polymer/paper type, coating, surface treatment, surface energy method, age after treatment, cleanliness, and storage.
- Freeze the ink. Hold resin, pigment, solids, pH, viscosity, solvent/water balance, foam control, and print method constant.
- Run separate dosage ladders. Use one product per ladder and document addition stage, dilution, shear, and hold time.
- Measure the wet print. Compare coverage, pinholes, craters, leveling, foam, transfer, density, and edge definition at production speed.
- Measure the finished construction. Compare adhesion, rub, friction, blocking, overprint, lamination, gluing, sealing, and aging.
ASTM D5264 covers Sutherland-rub testing of printed materials. ASTM D1894 covers static and kinetic friction for plastic film and sheeting, and ASTM D3359 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.
Common comparison mistakes
Choosing the product with the lowest published surface tension
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.
Testing 3501 to fix unprinted areas
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.
Approving improved rub without checking lamination
A surface-active additive can improve handling while reducing the bond needed for lamination, overprint, adhesive, or sealing. Challenge the complete package construction.
Ignoring foam after adding a wetting agent
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.
Food-packaging caution
This comparison does not establish food-contact compliance. Review current EuPIA raw-material selection guidance, obtain composition/regulatory statements, and validate migration and set-off for the complete printed structure, intended food, time, temperature, and jurisdiction.
Frequently asked questions
What is the main difference between 2100 and 3280?
Use 2100 as the broader first wetting benchmark. Move 3280 ahead when the difficult-substrate or screen-ink wetting requirement is already defined.
When should 3501 be tested first?
When wetting and print formation already pass, but blocking, release, friction, rub, or downstream handling remains the commercial failure.
Why does the 2100 product URL contain “chlumiwe-100”?
That is the current WordPress slug of the CHLUMIWE® 2100 product page. The visible product title and technical data identify it as 2100.
Request a controlled ink-additive shortlist
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.