UV printing on polypropylene (PP), hard

Folders, containers, buckets, cups, stationery. What the printer and primer makers publish about polypropylene (PP), hard: primer, white ink, flat or rotary, how long prints last and what goes wrong.

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Desktop UV: Limited
Primer: Needed
White ink: Not stated
Shape: Flat or curved

Plastics and rubber. Things people make: folders, containers, buckets, cups, stationery. From the sources at the end, checked October 11, 2026; we haven't tested it ourselves.

What it needs

Desktop UV printers: Limited Makers agree PP has low surface energy and needs a primer or flame, corona or plasma treatment; Mimaki's own table rates PP/PE Bad even with its PR-100 primer. [1] [2] [7]
Primer or adhesion promoter: Needed. Polyolefin primer such as LogoJET P2 Adhesion Promoter for PP & PE, or Nazdar 7020 for fluted PP at 44 dynes/cm or higher; or flame, corona or plasma treatment. [1] [2] [3] [4] [5]
White ink: Not stated
Flat or curved: Flat or curved. eufyMake lists PP in its flatbed and rotary-attachment material tables, without extra prep notes. Flatbed height limit 60 mm. [10]

How long it lasts

None of the sources gives dishwasher, outdoor or scratch figures for polypropylene (PP), hard. Test a sample the way it will be used before you sell it.

What goes wrong

Ink peels without treatment because of the low surface energy (eufyMake, xTool).
Mimaki's table rates PP/PE Bad with and without its PR-100 primer on both of its ink sets.
eufyMake says the effect of flame, corona or plasma treatment fades over hours to a day or two, so print soon after treating.
The same plastic can behave differently by maker, finish or formulation (Longer).

[2] [3] [6] [7] [8]

Before you print

LogoJET: UV inks do best at 40-50 dyne; a dyne-level test kit shows where your stock sits.
Wipe primer on with a lint-free cloth; LogoJET says it can sometimes go on up to 24 hours ahead if not touched.
Run a cross-hatch tape test on a sample before a batch (Roland, Longer).

[6] [8] [9]

Supplies

Look for an adhesion promoter sold for UV printing on polypropylene (PP), hard, and read its data sheet for how long to let it dry: adhesion promoter (Amazon US), adhesion promoter (Amazon UK). Clean with isopropyl alcohol wipes first. Test one piece before a batch.

Every material in one table: what a UV printer can print on. Weighing up other machines? See UV against DTF, sublimation and a Cricut.

Has a maker published something different, or does your printer's manual disagree? Email hello@homeuvprinter.com and we'll check it against the source.

Sources

Checked October 11, 2026.