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Plastics, film & foil coding

A thermal inkjet coder with Odyssey solvent ink for dates, lot codes and barcodes that stay on bottles, tubs, films and foils.

Plastics are the opposite of cardboard. Corrugated board soaks ink up; HDPE bottles, PP tubs, PET containers, films and foils are sealed and non-porous, so there's nothing for the ink to soak into. A water-based drop beads up and wipes off before it sets. Coding plastic reliably starts with an ink that bonds to the surface instead.

That's a solvent ink. Thermal inkjet runs Odyssey solvent ink from a sealed cartridge, so you get high-resolution dates, lot codes and barcodes on plastic with no make-up fluid and almost no scheduled maintenance.

What this job needs

  • A solvent ink. The solvent carrier flashes off and leaves a resin that grips the surface, giving a fast set and smudge resistance on plastics, foils, coated stock and metal. Odyssey solvent ink is the starting point for non-porous work.
  • The right surface. Untreated HDPE and PP have low surface energy, which resists wetting. PET, coated films and many foils take solvent ink well without treatment. If a code lifts on HDPE or PP, corona or flame treatment raises the surface energy so the ink anchors.
  • A test on your own pack. Adhesion depends on the exact plastic, any treatment and your line, and regrind and additives change the surface. Test on the real container: a tape test and a thumb-rub after full cure, and check that the code is dry before the next contact point. Tell us your substrate and we'll help you qualify the ink.
  • The head close to the surface. Thermal inkjet prints up to 6 mm from the surface. It suits flat or gently curved packs, so guide bottles past the head so the code area stays steady and within range.
  • Codes that keep pace with a moving web. On film and foil, an encoder tells the printer how fast the web is moving, so codes don't stretch or squash when the line speeds up or slows down. The X1, X1 Lite and A1 take an encoder directly; the Smart Printhead takes one through the I/O Box.
  • Honest speed for your resolution. 60 m/min (about 197 ft/min) at 300 dpi, and about 30 m/min at 600 dpi. "Up to 300 m/min" is a 60 dpi figure, too coarse for a readable code.

Best for this job

Pre-set for this job: ½" codes, balanced cost. All of these run Odyssey solvent ink.

X1 Lite + T2 Standard

One line, everyday coding on plastic: ½" or 1" codes on a 7" touchscreen controller.

Code height
½" or 1"
Resolution and speed
600 × 600 dpi at ½" · 60 m/min at 300 dpi
Screen
7" touchscreen at the operator station

A1

Everything in one unit with a 5" touchscreen; runs solvent cartridges at ½" or 1".

Code height
½" or 1"; 2" with two stitched
Resolution and speed
600 dpi at ½" · 60 m/min at 300 dpi
Screen
5" touchscreen built in

Smart Printhead

A ½" unit with no controller that builds into a packaging machine or onto a robot arm. Run it from a browser or the NexLink app (Android).

Code height
½" (2" with four)
Resolution and speed
600 × 600 dpi · 60 m/min at 300 dpi
Screen
None: a browser or the NexLink app

Also fits

Wet bottling areas, two lines, or long runs.

Support behind the line

We supply the Anser printers, the Odyssey inks and the on-site technical support behind them, and we work alongside your distributor, who handles the quote and local service. Plastic is where ink qualification matters most, so before you buy, we'll help you test the ink on your own bottles, tubs or film. Every Anser NexGen printer carries a 5-year warranty, honored by TPS.

Frequently asked questions

Can I use water-based ink on plastic?

Generally no. HDPE, PP and PET are non-porous, and untreated HDPE and PP also have low surface energy, so water-based ink beads up and rubs off. Use a solvent ink. If adhesion is still marginal on HDPE or PP, corona or flame treatment helps the ink anchor.

Can thermal inkjet code plastic bottles?

Yes, with a solvent ink. Thermal inkjet prints up to 6 mm from the surface and suits flat or gently curved areas, so guide the bottle past the head to keep the code area steady. Test on your real bottle: regrind and additives change how the ink holds.

Do I need to treat plastic before coding?

Not always. PET, coated films and many foils take solvent ink well without treatment. Treatment is most useful on untreated HDPE or PP, where an adhesion test shows the code lifting.

Can thermal inkjet print on film and foil?

Yes. Use a solvent ink, and run an encoder so the printer tracks the web speed and codes don't stretch or squash. The X1, X1 Lite and A1 take an encoder directly; the Smart Printhead takes one through the I/O Box.

How fast does a thermal inkjet coder print on plastic?

It depends on the resolution. At 300 dpi, 60 m/min (about 197 ft/min); at 600 dpi, about 30 m/min. The "up to 300 m/min" figure you'll see for thermal inkjet is at 60 dpi, which is too coarse for a readable code.

Is the ink safe for food packaging?

We don't make food-contact claims for any ink. Whether an ink is suitable depends on the ink, the package and how it's used, and it's confirmed product by product. If you're coding food packaging, tell us the pack and we'll work through it with you.

Thermal inkjet or continuous inkjet (CIJ) for plastics?

Continuous inkjet has long been the default for films and plastics. Thermal inkjet now runs solvent inks from sealed cartridges, so it codes plastic at high resolution with no make-up fluid and almost no scheduled maintenance. We supply thermal inkjet, and we're happy to talk through where CIJ still fits.

Related reading

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