Dyeing synthetic fibers is an energy-intensive process, responsible for a significant share of global water pollution and greenhouse gas emissions. French startup Everdye proposes a radical alternative, with a new dyeing process that promises to reduce energy consumption by up to eight times, without requiring textile companies to replace existing machinery.

From academic research to industrial application

Everdye's technology stems from the doctoral research of Amira Erokh, co-founder of the company. During her studies, Erokh discovered a chemical mechanism that later proved applicable to textile dyeing. After working in the paint industry, Erokh transformed her scientific discovery into an industrial opportunity, founding Everdye in 2021.

An innovative room-temperature process

Unlike traditional methods, which use high temperatures and petroleum-based chemicals to force the bond between dye and fiber, Everdye's process harnesses electrostatic attraction. The fibers are pretreated to create negatively charged anchoring points, while the pigment is positively charged. The pigment then binds to the fiber at room temperature, without the need for high heat or toxic additives. Polymerization during drying then permanently fixes the pigment.

Environmental and economic benefits

Everdye's process offers numerous advantages:

  • Significant reduction in water and energy consumption.
  • Reduced use of chemicals.
  • Richer and longer-lasting colors.
  • Simplification of the dyeing process.

The company aims to achieve cost parity with traditional methods, combining environmental benefits with economic competitiveness. Adoption of the technology is facilitated by the fact that it does not require investment in new equipment.

Challenges and future prospects

Textile dyeing is a complex process, with several technical variables to consider. Everdye initially focuses on primary colors and the development of pigments for cellulosic fibers such as cotton, hemp, and linen. The development of pigments for polyester, the world's most widely used fiber, is in advanced stages. The main challenge, according to Everdye, is cultural and financial, rather than technical. The transition to more sustainable practices requires a change of mindset and overcoming resistance related to traditional systems.