Starting in 2009, SINTRA began filing new patents based on the development of innovative technologies known as QPE (Quality Performance Efficiency). More than just products, these patents focus on technical solutions applicable to projects using perforated ducts.
In 2009, the SPIROPACK patent marked a turning point for SINTRA, enabling the company to scale up through a high-capacity automated production line: fabric ducts were progressively replaced by metal ducts.
