XF-581 (1 mil) and XF-582 (2 mil) thermal transfer printable white polyimide label stocks were provided to Zestron America for compatibility tests with water-based and solvent-based agents.
Both materials were tested before and after reflowing various PCBs. In all cases, print remained clear with no visible effects.
The polyimide label materials coated with a permanent pressure-sensitive acrylic adhesive and a high opacity, medium gloss white topcoat are designed for thermal transfer printing. Barcode labels made from the material reportedly demonstrate excellent performance in lead-free wave solder environments, which range from 260º to 290ºC.
Designed for barcode or alphanumeric identification of PCBs or related electronic components. Can withstand mixed circuit board processes on top or bottom side of the board. Said to have excellent resistance to harsh fluxes, cleaning agents, saponifiers and wave solder environments.
Polyonics, www.polyonics.com