ABSORA is a materials startup from Bopfingen that has created HSA3, an industrial micro-perforation technology able to absorb noise and vibration across a wide frequency range, reduce aerodynamic drag and remain extremely light and strong. Built on ten years of R&D by CTO Johannes Härle, the process makes micro-perforations economically viable at scale, positioning HSA3 as a sustainable alternative to traditional acoustic and structural materials such as stone wool and foam. The company seeks to replace conventional sheet metal wherever possible, offering lighter, quieter and more environmentally friendly solutions for sectors from power plants and HVAC equipment to buildings and vehicles. Initial pilot projects are underway in gas power stations, HVAC systems and other sound-damping installations, including a collaboration with Samsung-owned FläktGroup. Management estimates its addressable European market for lightweight construction, acoustic insulation and filtration at over €200 billion with annual growth above 8 percent. Proceeds from the latest financing will be used to scale HSA3 into serial production and launch additional industrial lighthouse projects. No revenue or user figures were disclosed in the article.

Total raised

$1M

Funding rounds

1

Latest round

Seed

Latest activity

Dec 2025