Quick answer: buyers comparing CHLUMIWE® 2100, CHLUMIAG® 3501, and CHLUMIAF® 3062 for printing inks should not test them as if they solve the same first problem. 2100 should move first when the project still looks like a substrate-contact wetting, spread, or laydown problem. 3501 deserves earlier review when the ink already lays down reasonably well but still needs a broader anti-sticking, print-side compatibility, or downstream handling route. 3062 belongs earlier when the system is directionally right but foam, entrained air, or process-side instability is still undermining production or print quality.
That is the commercially useful split. This page is not another broad label or packaging application article. It is a comparison page for buyers already down to three realistic CHLUMICRYL® routes and trying to decide which one deserves the first sample round.
Why this page deserves to exist beside the live printing-ink application pages
Longchang already has live CHLUMICRYL® application pages for label inks, paper cup inks, shrink sleeve inks, metal packaging inks, blister packaging inks, and process pages such as flexographic inks, gravure inks, screen inks, offset inks, and inkjet inks. Those pages answer application or process questions first.
This page answers a narrower buyer question that appears later in the funnel: if the shortlist is already down to 2100, 3501, and 3062, which route should be tested first, and why? That is a different search intent from another application page. It is additive-comparison intent inside the CHLUMICRYL® branch.
It also follows the cleaner publishing direction for a mature packaging-and-print cluster. Instead of adding another near-duplicate substrate page, this comparison gives buyers a reusable decision tool that can route back into several existing application pages and core product pages.
What the current company-supported facts actually separate
- CHLUMIWE® 2100 is supported by the current Longchang product page for printing inks, overprint varnishes, and inkjet inks. The page lists 0.1% to 1.0% recommended dosage, addition during grinding, stirring, or after production, optional dilution with water, alcohols, alkanes, and aromatics, and applicability across UV, solvent, and water-based systems.
- CHLUMIAG® 3501 is supported as a multi-component modified polysiloxane that can be added at any stage or later and used across UV, solvent, and water-based systems. The current product page directly lists printing inks, inkjet inks, screen printing inks, overprint varnishes, release coatings, and anti-sticking-agent use.
- CHLUMIAF® 3062 is the defoamer-first route. Longchang supports it for printing inks with a recommended dosage of 0.1% to 0.5%, plus broader dosage references for coatings families, and supports use in UV, solvent, and water-based systems. The current page also adds a process watchpoint: if solvent dilution is used, stability and defoaming performance should be tested first.
That is enough company-supported separation to build a real shortlist without inventing unsupported end-use claims. Light external research was used only for the conservative framing that printing-ink additive selection is commonly split between wetting behavior, surface-handling compatibility, and efficient defoaming rather than one generic additive story.
Quick comparison table: which route deserves the first screen?
| Buyer priority | 2100 | 3501 | 3062 |
|---|---|---|---|
| Main first-screen job | Substrate-contact wetting, spread, and laydown | Broader anti-sticking, print-side compatibility, and downstream handling | Process-side foam control, air release, and production stability |
| Supported dosage | 0.1% to 1.0% | Current page emphasizes stage flexibility rather than a dosage band in the visible recommendations section | 0.1% to 0.5% for printing inks |
| System window | UV, solvent, water-based | UV, solvent, water-based | UV, solvent, water-based |
| Addition logic | Grinding, stirring, or after production | Any stage or later addition | Use directly or verify solvent-dilution stability first |
| Best use when | The printed surface still needs cleaner first contact and spread | The ink already wets acceptably but still needs broader handling or anti-sticking support | The process is being limited by foam, entrained air, or circulation-side instability |
| Main watchpoint | Do not use it as a vague cure-all if the real issue is anti-sticking or foam | Do not force it into a pure wetting-first problem just because it has broad compatibility | Do not use a defoamer-first route to hide a basic wetting or finished-surface handling problem |
When CHLUMIWE® 2100 is the better first move
2100 should move first when the printing-ink project still looks like a wetting and spread problem. This is often the cleaner benchmark when the substrate may be film, paper, coated stock, or mixed packaging-print surfaces, but the team is not yet at the point where it needs a broader print-side compatibility route or a dedicated defoamer decision.
The current Longchang page gives 2100 a practical operating window for that job. It supports 0.1% to 1.0% dosage, flexible addition during grinding, stirring, or after production, and dilution with water, alcohols, alkanes, and aromatics. The same page directly lists printing inks, overprint varnishes, and inkjet inks.
2100 is usually the better first route when:
- the project still needs a broad substrate-contact wetting benchmark,
- the visible failure is weak spread, poor first contact, or uneven laydown,
- the buyer wants a route that can still cross several printing-ink families before narrowing further, or
- the first question is still how well the ink meets the substrate, not how it behaves later on press or after drying.
In short, 2100 is the more useful first move when the system still needs a better surface-entry route.
When CHLUMIAG® 3501 is the better first move
3501 deserves earlier review when the project is no longer only about first contact. It becomes the stronger route when the ink already lays down reasonably well, but the buyer still needs a broader anti-sticking, release-oriented, or print-side compatibility path.
The current Longchang page makes that broader positioning unusually clear. 3501 is directly listed for printing inks, inkjet inks, screen printing inks, overprint varnishes, release coatings, and anti-sticking-agent use. It can also be added at any stage or later and stays open across UV, solvent, and water-based systems.
3501 is usually the better first route when:
- the printed surface already wets acceptably, but the project still has stacking, handling, or downstream compatibility pressure,
- the buyer wants one route that can sit credibly across inks, OPV, and release-adjacent conversations,
- the first screening decision needs to stay commercially aligned with finished-surface behavior instead of only initial spread, or
- the team needs a product that is easier to slot into different production stages during screening.
That makes 3501 the better first move when the real question is not will the ink wet the substrate? but will the printed surface behave properly afterward?
When CHLUMIAF® 3062 is the better first move
3062 should move first when the printing-ink project already has a plausible wetting route but the system keeps failing because of foam, entrained air, or poor process stability. That is a different job from improving first contact or broader anti-sticking compatibility, and it can waste a lot of development time if the team keeps screening more surface additives before solving the gas-management problem.
Longchang supports 3062 as a polyether-modified polysiloxane defoamer for printing inks, with a recommended dosage of 0.1% to 0.5% and applicability across UV, solvent, and water-based systems. The product page also adds a practical note that if solvent dilution is used, the team should verify stability and defoaming performance first.
3062 is usually the better first route when:
- the visible failure is foam during manufacture, letdown, circulation, or printing,
- the line is directionally correct on wetting but still unstable because of entrained air,
- the buyer wants a dedicated printing-ink defoamer route rather than another broad surface-control additive, or
- the first task is to clean up production behavior before optimizing finished-surface handling.
So 3062 belongs first when the project is being limited by gas management and process stability, not by missing wetting or print-side compatibility.
Why 3280 is not on this page
Some buyers may expect a difficult-substrate wetting route such as 3280 in every printing-ink shortlist. That would make this page less clean, not more helpful. Longchang’s live CHLUMICRYL® branch already covers more difficult-substrate or narrower application splits elsewhere.
This page is intentionally about a different three-way decision: one broad wetting route, one broader print-side compatibility route, and one defoamer route. If the buyer already knows the project is a more specific difficult-substrate wetting problem, the next step is a narrower wetting-focused shortlist, not a broader printing-ink decision page like this one.
How buyers should choose before the first sample round
1. Start with the first visible bottleneck
If the printing surface still is not accepting the ink cleanly, start with 2100. If the ink already wets but still needs handling or anti-sticking support, move 3501 earlier. If the process keeps failing because of foam or entrained air, move 3062 up.
2. Keep wetting, handling, and defoaming separate
One of the easiest formulation mistakes is to keep testing more wetting agents when the project has already shifted into print-side handling, or to keep changing surface additives when the real blocker is foam control. This shortlist works only if the first job stays clear.
3. Use the supported operating notes, not only the headline role
2100 has flexible addition timing plus solvent-dilution flexibility. 3501 can be added at any stage or later. 3062 can be diluted, but dilution stability and defoaming performance should be checked first. Those are part of the selection logic, not minor footnotes.
4. Keep the page type honest
This is not a catch-all “best additive for all inks” page. It is a product-comparison page for buyers already comparing three specific CHLUMICRYL® routes. That narrower comparison intent is exactly why it can coexist with the broader application pages.
Recommended Longchang path from this comparison
- Wetting-first route: CHLUMIWE® 2100
- Broader print-side compatibility route: CHLUMIAG® 3501
- Defoamer-first route: CHLUMIAF® 3062
- Cluster overview: CHLUMICRYL® Coating and Ink Additives
- Related application page: How to Choose Additives for Label Inks
- Related application page: How to Choose Additives for Blister Packaging Inks
- Related application page: How to Choose Additives for Metal Packaging Inks
- Related process page: How to Choose Additives for Flexographic Inks
- Related process page: How to Choose Additives for Screen Inks
- Related process page: How to Choose Additives for Inkjet Inks
FAQ
Which product should I test first if a printing ink is not spreading cleanly?
Usually CHLUMIWE® 2100, because it is the cleaner wetting-first benchmark when the real problem is substrate contact and spread.
When should 3501 move ahead of 2100?
3501 should move ahead when the ink already wets reasonably well but the project still needs broader anti-sticking, print-side handling, or downstream compatibility support.
When should 3062 move ahead of the other two?
3062 should move ahead when persistent foam, entrained air, or process-side instability is the main barrier to acceptable manufacturing or print quality.
Can one of these three additives solve every printing-ink issue?
No. Their supported first-screen logic is different enough that buyers should not treat them as interchangeable. The faster route is to identify whether the problem starts at wetting, handling compatibility, or foam control.
Is this page replacing the existing label or packaging-ink pages?
No. Those pages still answer application questions first. This page is narrower and serves the buyer who is already comparing these three specific additive routes.
Need a tighter first shortlist?
If your printing-ink project is stuck between substrate wetting, print-side compatibility, and foam control, stop testing 2100, 3501, and 3062 as if they solve the same first problem. Separate the actual bottleneck first. That usually makes the next CHLUMICRYL® sample decision much faster.