Flexographic Printing Machine with Corona Treatment
Surface treatment before printing on PE and PP film is critical for ink adhesion. We map corona-ready unwind/rewind integrations to Master and King CI platforms.
Specified for surface print and lamination prep.
Web width context used in selection on this page.
Process-limited band — not a generic catalog maximum.
Principle, machine fit, and parameters
How it works
Corona discharge raises film surface energy so ink and adhesive wet out. Dyne level must be measured after treatment, not assumed from a power setpoint. Over-treatment can embrittle thin PE; under-treatment causes pinholing and poor adhesion.
Machine fit
Master and King CI lines printing PE/PP usually integrate corona at unwind or before the first print unit. Honor stack on paper may skip corona unless the plant also runs polyolefin webs.
Parameter range
Food and flexible packaging films commonly target about 38–42 dyne/cm after treatment, verified with dyne pens or contact-angle checks. Power density (W·min/m²) should be quoted against web width and speed.
Common faults
Ozone smell without dyne gain, striping from dirty electrodes, and dyne fall-off after storage are common. Film that was pre-treated by the supplier can still need a light boost after long inventory time.
Options & add-ons
Specify electrode width, power supply headroom, ozone extraction, and inline dyne verification ports. Optional nitrogen-blanket corona is rare on mid-width CI and usually unnecessary.
Plant example
A PE snack-film converter often fixes ink rub-off by adding measured corona before station one, instead of changing anilox or blaming the ink alone.
LISHG AI Press Selector
Your production profile
Adjust application, substrate, width, speed, budget, and automation — the selector ranks live Master, King, and Honor series and updates the recommendation on the right.
Master Series
Based on your profile: surface print and lamination prep · PE, PP, and other low-energy films · 800–1450mm · matched to press line speed
Master Series is the strongest fit for surface print and lamination prep because Best fit when converters need a reliable CI platform for mixed film, paper, non-woven, and FFS jobs without the highest investment. At your target speed of matched to press line speed, this platform keeps register stable, startup waste low, and changeovers practical for repeat jobs.
You selected PE, PP, and other low-energy films. Master Series is engineered for film, paper, non-woven fabric, ffs heavy-duty sack. Core substrate window: film, paper, non-woven fabric, ffs heavy-duty sack. This reduces tension surprises and ink-transfer issues on your primary material.
Width target 800–1450mm and speed matched to press line speed sit inside the Master Series envelope (1000-1600mm, 500m/min). Budget Mid to high range and High automation align with high-automation workflows at this output level.
Key advantages: Balanced CI stability; fast job changeover; wide substrate window. Tradeoff to confirm: Less suitable than King for ultra-high-speed thin-film repeat jobs. If your mix shifts toward ultra-thin film at 400–500 m/min, compare with another LISHG line before finalizing.
Corona Treatment FAQs
Is factory-treated film enough without corona on press?
Often not after storage. Many PE/PP rolls lose dyne in the warehouse and need a boost before print or lamination.
Where should corona sit on a CI line?
Usually at unwind or immediately before the first print unit so treated film does not sit long enough to decay before ink laydown.
Machine family matrix
Compare Master, King, and Honor for this process module—not a generic film brochure table.
| Key Specifications | Master | King | Honor |
|---|---|---|---|
| Best fit | Wide PE/PP CI with integrated corona | Standard film CI + treatment package | Only when stack also runs polyolefin |
| Speed focus | Matched to 400–500 m/min | Matched to 300–400 m/min | As needed for PE trials |
| Automation | Inline dyne-ready corona | Unwind corona + extraction | Optional add-on |
| Decision value | Export PE/PP volume | General flexible film | Paper-first plants |
Process-fit press comparison
Compare drive architecture, substrate compatibility, speed, automation, ROI logic, and industrial use cases.