UV printing on polycarbonate (PC)

Machine labels, control panels, housings, protective covers. What the printer and primer makers publish about polycarbonate (PC): primer, white ink, flat or rotary, how long prints last and what goes wrong.

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Desktop UV: Prints as is
Primer: Helps
White ink: On dark or clear
Shape: Flat or curved

Plastics and rubber. Things people make: machine labels, control panels, housings, protective covers. From the sources at the end, checked October 11, 2026; we haven't tested it ourselves.

What it needs

Desktop UV printers: Prints as is xTool says polycarbonate prints well straight out of the box and Mimaki rates PC Good with and without its primer. [1] [2] [5]
Primer or adhesion promoter: Helps. Nazdar 7030 wipe-on adhesion promoter lists Lexan (polycarbonate). [4]
White ink: On dark or clear. xTool: white ink is most important on clear plastics, colored plastics and dark surfaces. [1]
Flat or curved: Flat or curved. eufyMake lists it for both its flatbed and rotary-attachment material tables. Flatbed height limit 60 mm; rotary takes round objects 45-100 mm wide, 80-245 mm tall. [7] [8]

How long it lasts

Dishwasher: xTool says its UV ink layer cannot withstand dishwasher cycles (general statement, not specific to this plastic). [6]
Outdoors: eufyMake says UV prints on plastic can be used outdoors (license plates, pool labels); the statement is not specific to this plastic. [9]
Scratches and wear: xTool: with primer, normal wiping and handling will not remove the ink; keys, blades or sanding will. A UV varnish coat is its top suggestion. [6]

What goes wrong

Whole print peels off when primer is missing, the wrong type, or the surface was not cleaned (xTool).

[6]

Before you print

Clean with ethanol or isopropyl alcohol first; it also reduces static (Mimaki).
Print a test sample first; Mimaki's table results are not guaranteed.

[2] [3]

Supplies

Look for an adhesion promoter sold for UV printing on polycarbonate (PC), 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.