Swiss Robotics Revolution: On's Single-Robot Shoe Factory

One robot. Three minutes. That is all it takes to dismantle the traditional manufacturing hierarchy. In a staggering display of industrial evolution, Swiss running shoe giant On has unveiled a production facility in Zurich that renders the conventional assembly line obsolete. Where standard footwear production demands the hands of nearly 300 workers to stitch, glue, and assemble a single pair, On’s new automated system accomplishes the same feat with a single robotic arm.

This is not merely an incremental improvement; it is a complete upheaval of the labor model. Caspar Coppetti, co-founder of On, states plainly that the work of hundreds is now executed by one machine. The implications for the industry are seismic. By condensing a complex, labor-intensive supply chain into a solitary, autonomous unit, On is challenging the very definition of mass production. The Zurich facility stands as a bold testament to Swiss precision, signaling a future where human dexterity is replaced by relentless robotic efficiency.

The technology driving this revolution, dubbed "Lightspray," abandons the needle and thread entirely. Developed in close collaboration with industrial titan ABB, the robot sprays a continuous, wafer-thin plastic filament in a precise spiral directly onto the shoe last. The result is a seamless upper that fuses instantly with the sole—no glue, no seams, no weak points.

This process creates a shoe that fits like a second skin, offering a level of structural integrity that traditional manufacturing struggles to match. The speed is blistering: a fully formed shoe emerges every three minutes. This is additive manufacturing pushed to its absolute limit. The resulting footwear, the Cloudboom Strike LS, weighs a mere 170 grams, a critical advantage for elite athletes who wore the prototype at the Paris 2024 Olympic Games. On has effectively turned a shoe factory into a 3D printer, eliminating waste and rewriting the rules of material science in real-time.

The environmental impact of this automation is as dramatic as its speed. On reports a staggering 75% reduction in CO2 emissions compared to conventional shoe production methods. By stripping away the need for multiple component shipments, glues, and excess materials, the Lightspray process represents a critical leap toward sustainable manufacturing.

In an industry often criticized for its heavy carbon footprint and waste, these numbers are revolutionary. The single-material construction not only simplifies production but drastically streamlines the recycling process at the product's end-of-life. While competitors grapple with complex supply chain emissions, On has engineered a solution that cuts pollution at the source. This is not greenwashing; it is a quantifiable engineering victory that proves high performance and low impact are no longer mutually exclusive.