Drying capacity
Cross-check oven length, effective temperature, nozzle velocity, and per-color drying budget before turning any knob.
Gravure print · Water-based ink retrofit
Before you change the ink,
map the drying envelope.
The drying envelope is the combination of speed, heat, airflow, and exhaust where your oven actually gets the job done. If your line stalls once speed climbs past a certain point, the ink is rarely the first problem — the oven has to remove more water in less time, and the rest of the line has to keep up. We start with on-site oven data, then size the retrofit.
Three decades in gravure
Field-first retrofit
Water-ink focus since 2018
Drying outcomes depend on airflow, heat load, exhaust balance, and material; always verified on site.
AirflowHeatExhaustAir distribution
Diagnose first, retrofit second
Break the problem into
measurable parameters.
Before quoting any kit, we measure what the oven is actually delivering against the job the line asks it to do.
Exhaust balance
Confirm the wet-air path can keep up under humidity; in many plants this, not heat, is the real ceiling on speed.
Process fit
Match the retrofit to web width, color count, ink system, and target speed; sometimes the answer is a process tweak.
About · Hangzhou Yuehua
From Wenzhou Yaohua to Hangzhou Yuehua,
three decades with gravure printers.
Hangzhou Yuehua Printing & Packaging Machinery Co., Ltd. traces back to Wenzhou Yaohua, founded in 1992. We have built gravure presses, laminators, and slitters through every generation of drive technology.
Working alongside printers taught us that registration is no longer the hard part. With VOC regulation tightening, the constraint has moved: the switch from solvent to water-based ink lives or dies on the drying oven.
That is where we are investing now. Our water-based ink drying line started with a simple heat-pump module and has grown into a system view of heat, airflow, exhaust, heat recovery, and control interlocks. The goal is to give printers a complete equipment path for the solvent-to-water transition.
Equipment showcase
See the layout,
then size the retrofit.
A short 3D preview of the drying and heat-recovery unit to show body layout, duct interfaces, and service clearance. Final configuration is set against your press model, web width, color count, and on-site conditions.
Request a fit review3D preview · 5 seconds · click to play
Field evaluation checklist
Bring these six data points
and the call is quicker.
- 01Press make, model, and color count
- 02Web width, current speed, target speed
- 03Ink system: water-based or alcohol-water
- 04Oven length per zone and set temperature
- 05Fan configuration, airflow, exhaust arrangement
- 06Where in the process the issue appears
Technical topics
Start with the right
engineering question.
English technical briefs are being prepared. For a current line, send the six field data points and we will return the relevant diagnostic path first.
Speed still unstable?
Start with drying capacity, exhaust balance, and process window before assuming the ink is to blame.
Request an English brief →Is an oven retrofit worth it?
Six field data points make the retrofit value and scope much easier to judge.
Request an English brief →Why does humidity change drying?
Look at inlet air, exhaust balance, zoning, and material handling around a humid plant.
Request an English brief →Where does energy go?
Match airflow, temperature, exhaust, and heat recovery instead of chasing a single setting.
Request an English brief →Start the evaluation
Send your line data,
we will tell you whether a retrofit is worth it.
Please include press model, color count, web width, current and target speeds, and the ink system you run or plan to run. We respond with a retrofit value and direction first, before any equipment quote.
Technical contact
Mr. Dong
For discussions on water-based ink drying, oven air path, or exhaust balance fit-up, please reach out by phone or WeChat.
Contact: Mr. Dong
Tel / WeChat: +86 186 5813 5055
Tel / WeChat: +86 186 5813 5055