How to Apply Mounting Tape to a Flexo Sleeve (Step-by-Step Guide)
To apply mounting tape to a flexo sleeve, start by cleaning the sleeve with isopropyl alcohol, then align and apply the tape evenly using a roller or applicator. Smooth out any air bubbles, trim the edges, and inspect the surface before mounting the plate.
Proper tape application ensures consistent pressure and high-quality print results, while mistakes can lead to air pockets, print defects, and plate lifting.
Why Proper Tape Application Is Important
Incorrect mounting tape use can result in:
- Air pockets under the plate
- Vibration during the print run
- Inconsistent impression quality
- Plate edge lifting
- Material waste and rework
What You’ll Need
- Clean flexo sleeve or cylinder
- Foam-backed double-sided flexo mounting tape
- Tape applicator or manual roller
- Lint-free cloth and isopropyl alcohol
- Cutting knife or scissors
Step-by-Step: How to Apply Mounting Tape to a Flexo Sleeve
1. Clean the Sleeve
Wipe the sleeve using isopropyl alcohol and a lint-free cloth in circular motions. Let it dry completely.
2. Align the Tape
Start the tape parallel to the sleeve axis, leaving 1–2 mm from the edge to avoid overhang.
3. Apply the Tape Evenly
Use a manual roller or tape machine. Spiral the tape at a slight angle to avoid overlap and minimize seams.
4. Eliminate Air Bubbles
Use the roller to press from center outward. Optional: inspect under light to find hidden bubbles.
5. Trim the Edges
Use a sharp blade to trim the ends cleanly, ideally at a 45° angle.
6. Final Inspection
Check for a flat, uniform surface with no ridges or bubbles. The tape should be tacky and ready for plate mounting.
Expert Tips for Better Tape Application
- Store tape in a cool, dry environment
- Avoid touching the adhesive side
- Use a tape mounting station for high-volume jobs
Frequently Asked Questions
What kind of tape is best for flexo sleeves?
Use double-sided, foam-backed flexographic mounting tape for optimal adhesion and cushioning.
Can I reuse mounting tape?
No. Always use fresh tape to ensure clean adhesion and print quality.
How do I avoid air bubbles when applying tape?
Apply the tape slowly with steady pressure and smooth it from the center outward using a roller.
Embrace Innovation: Automating Your Tape Application
While following the manual steps above is effective, the future of flexo is in automation. Letting innovation work for you can eliminate the variables and potential for human error that lead to print defects. For operations seeking maximum efficiency, consistency, and a guaranteed flawless finish, automated mounting machines are the next level.
The SAMM 3.0, for example, among other things, is designed to streamline this process. It applies mounting tape with robotic precision, ensuring zero bubbles and perfect alignment every time. See how it can revolutionize your prepress department in the video below.