What innovations exist regarding materials for seatbelts?

Some relevant developments in this field:

1. Bio-based or recycled materials: Some studies focus on using strong, sustainable fibers such as flax, hemp, or recycled plastics to make seatbelts more environmentally friendly.
2. Improved synthetic fibers: Companies like BASF (Germany) are developing high-performance polymers that are both sustainable and safe.
3. EU safety standards: There are strict requirements for seatbelts (e.g., ECE R16 and EU 2019/2144), meaning new materials must meet high safety standards.