Custom water-based ink color matching
Prepare the substrate, process, target reference, transfer setup, speed, drying, and trial feedback for a flexo or gravure color discussion.
Open color matching serviceTechnical support
Water-Based Ink Technical Support & Troubleshooting
Start water-based flexo or gravure ink troubleshooting with the visible press symptom, substrate, transfer setup, working-ink history, drying path, and downstream test. Varnish and color-matching routes are separated so the site describes assistance, not guaranteed correction.
Technical guides
Start with the job or press-side problem you can define
Each guide defines a planned validation or observed symptom, lists the evidence to collect, and gives a controlled trial path without promising a universal result.
Water-based ink not drying
When water-based ink is not drying as expected, the visible symptom may come from the ink, the amount transferred, the substrate, available air movement, the press condition, or what happens immediately after printing. A useful review separates those variables before changing the formulation.
Open diagnostic guideFoam in flexo or gravure ink
Foam in a flexo or gravure ink circuit is often a system problem before it is a formulation problem. Air can be pulled into the return, pump, chamber, hose connection, or falling stream, while ink condition and contamination determine whether those bubbles collapse or remain stable.
Open diagnostic guideInk adhesion on treated film
Water-based ink adhesion on film is a compatibility result, not a property of the ink alone. Film chemistry, print side, treatment age and uniformity, surface contamination, ink selection, transferred film, drying, overprints, and later converting steps all affect the observed result.
Open diagnostic guideInk and varnish rub resistance
Weak rub or scuff resistance is not a single defect. Damage may come from incompletely dried ink, poor binding to the substrate, an unsuitable ink or varnish direction, incorrect film weight, weak intercoat compatibility, a rough contact surface, or handling that is more severe than the original test requirement.
Open diagnostic guideWeak water-based flexo print
A weak flexo print does not by itself prove that the ink is weak. Compare the failing print with an approved or acceptable reference, then separate ink condition, transfer, plate and impression, substrate, dilution, and drying before selecting one controlled check.
Open diagnostic guideValidate varnish before overprinting
Use this guide to plan a controlled A0126 coating-to-print trial on the actual substrate. It separates material and surface preparation, coating and drying, the subsequent ink and print step, the agreed evaluation, and the records needed before a production decision.
Open validation checklistTroubleshooting
Diagnose the press symptom before choosing ink or varnish
Each issue should be discussed with real production details. The right adjustment may involve ink, varnish, substrate, drying, press control, or handling.
| Problem | Possible direction | What we need from you | Trial note |
|---|---|---|---|
| Slow drying | Review dryer capacity, press speed, substrate absorbency, ink film and dilution balance. | Substrate, process, speed, dryer condition, ink dilution and current drying time. | Assist analysis only; final drying window must be confirmed on the real press. |
| Foaming | Check circulation, pump condition, viscosity, pH, defoamer approach and press-side handling. | Circulation setup, foam timing, viscosity/pH readings, dilution and photos if available. | Foam control may involve both ink adjustment and press-side handling. |
| Poor adhesion | Review substrate type, surface treatment, ink selection, drying and downstream processing. | Substrate sample, treatment details, print structure, drying setup and adhesion test method. | Film and treated surfaces require case-by-case trial confirmation. |
| Weak rub resistance | Evaluate ink film, drying, varnish option, coating weight and handling requirement. | Printed sample, rub test method, finish target, substrate and downstream handling condition. | Varnish may help, but final performance depends on the full print structure. |
| Blocking / sticking | Check residual moisture, stack temperature, drying window, varnish film and pressure. | Stacking condition, time before stacking, dryer setup, substrate and coating details. | Trial should include realistic stack temperature and handling conditions. |
Product links
Connect the issue back to the product family
Technical support is more useful when the product, process, and application are all clear.
Water-Based Flexo Ink
For paper, paperboard, corrugated board, paper bags, and related paper packaging.
Water-Based Gravure Ink
For treated-plastic-film gravure trials with application-specific matching.
Water-Based Overprint Varnish
WOP inline gloss finishing for printed paper and paperboard packaging.
A0126 Water-Based Matte Print-Receptive Varnish
A0126 for a uniform matte, subsequent-print-receptive surface on paper, treated film, pearlized film, or a verified synthetic material.
Water-Based Soft-Touch Varnish for Paper and Treated Film
24-10-33 tactile water-based varnish for sample-led soft-touch and matte-finish trials on paper, board, and treated film.
Water-Based Laminating Adhesive for Metallized PET Film
L-2455 for trial-based wet lamination of metallized PET film to paper or paperboard.
JD Series Water-Based Transfer Adhesive for Paper
JD Series for structure-specific paper transfer lamination and peel-transfer trials.
Sample and trial workflow
Move from the buyer brief to a retained production reference
A useful technical-support cycle records the actual material and process, changes one controlled variable at a time, verifies downstream conversion, and retains the approved sample and conditions.
Six-stage sample and trial path
- 01Qualify the jobConfirm substrate, equipment, process route, and target result
- 02Prepare lab samplesUse representative materials and conditions wherever possible
- 03Run a controlled trialRecord equipment, speed, transfer or coating, and drying inputs
- 04Adjust one variableChange viscosity, pH, coating weight, speed, or drying only as applicable
- 05Verify downstreamCheck lamination, overprinting, cutting, folding, blocking, or the real next step
- 06Approve and retainDefine the process window and keep labeled reference samples
Can assist analysis of dryer capacity, press speed, substrate absorbency, ink film, and dilution balance.
Can help review circulation, pump condition, viscosity, pH, defoamer approach, and press-side handling.
Can support checks around substrate type, surface treatment, ink selection, drying, and downstream processing.
Can assist evaluation of ink film, drying, varnish option, coating weight, and handling requirement.
Can help review varnish selection, coating weight, drying consistency, substrate variation, and line conditions.
Can assist analysis of residual moisture, stack temperature, drying window, varnish film, and pressure.
FAQ
Technical support FAQ
What should be checked before changing the ink?
Confirm the substrate, surface treatment, press setup, ink film, dilution history, drying condition, and downstream process first. A visible symptom can come from several interacting factors, so an ink change should follow a structured review rather than replace it.
Why can the same water-based ink behave differently on another press?
Transfer system, circulation, dryer capacity, press speed, substrate condition, treatment level, ambient conditions, and operator control can all change the result. Compare the two press environments and printed samples before drawing a conclusion.
When is a controlled press trial necessary?
Use a controlled trial when the substrate, treatment, print structure, drying window, finish target, or downstream test differs from the available evidence. Record one change at a time and confirm the result with the agreed test method.
Have a press-side problem to review?
Send the substrate, press details, current issue, and target property. JLJ Coating can help analyze the matching direction and sample requirements.