Functional inks designed for printed electronics

Printed electronics inks are functional formulations that deposit conductive tracks, insulating layers or active elements directly onto a flexible substrate, without chemical etching or vacuum deposition. Unlike conventional PCB processes, they enable the manufacture of lightweight, conformable circuits produced at high volumes by screen printing.

Printed electronics inks are functional formulations that deposit conductive tracks, insulating layers or active elements on a substrate. Selection depends on the required function, support, printing process and curing cycle. Applicable characteristics must be confirmed for each grade in its technical documentation.

Flexible circuits, printed sensors, antennas and interfaces require a suitable selection of conductive, resistive and insulating layers. An architecture can combine a silver track, carbon function and dielectric layer when the project requires it. The choice of each grade must be confirmed with the substrate, process and qualification conditions.

For membrane keypads and interfaces, the combination of conductive, carbon and dielectric layers is defined from the function, substrate and qualification conditions. Mechanical performance must be checked for each grade and assembly.

VFP supports its clients from the prototype stage through to production volumes. During development, the R&D team formulates and adjusts ink rheology according to screen mesh count, target deposit thickness and selected substrate. Detailed technical data sheets specify measured resistivity, curing conditions and chemical resistance values.

From prototype to production, a grade is evaluated with the support, printed geometry, deposit thickness and process constraints. Applicable curing conditions and results are those stated in the grade’s technical data sheet, then confirmed during project qualification.

Three structural trends are reshaping the printed electronics markets. In-mold electronics (IME) integrates circuits directly into thermoformed plastic parts: the ink is printed onto a film that is then moulded, eliminating connectors and reducing component weight. E-textiles use flexible, wash-resistant conductive inks to embed sensors or NFC antennas in functional garments. Smart packaging uses low-cost printed antennas to activate traceability or authentication functions directly on the pack.

Printed electronics projects can include formed parts, functional textiles or connected packaging. These uses require specific validation of the substrate, printing, curing cycle and assembly. Grades are assessed case by case from their technical documentation.

A printed electronics architecture can combine conductive tracks, resistive functions, insulation layers and active elements as required. Selection is based on the required function, substrate, printing process and curing conditions. Applicable data are those in each grade’s technical data sheet and in validation on the project assembly.

See also the conductive range: Conductive inks for printed electronics.

Grades and technical data sheets to consult: SILVER ELECTRON (TDS), CEL001 (TDS), ECV003 (TDS), PIEZO ELECTRON UV (TDS).