Advansa, based in Hamm, Germany, has introduced ADVAterra, a biodegradable polyester fiber manufactured from 100% recycled feedstock that can be degraded by microbes in biologically active environments.

ADVAterra fibers are made from 100 percent post-consumer PET bottles and have been developed with patented modifications to provide biodegradability without compromising the benefits of PET's mechanical characteristics.

The novel fiber is offered in a variety of finenesses and cut length combinations as a water-dispersible short cut fiber for the paper and wet-laid nonwovens industries, as well as a staple fiber for dry-laid nonwovens and tow for the flock sector. It can be utilized in manufacturing for a wide range of end-use applications, including food-contact applications.

ADVAterra products offer the same characteristics as non-biodegradable standard fibers and can be handled in the same way, reducing environmental impact while maintaining quality and performance.

Furthermore, after the fiber's lifespan is complete, it may be recycled. ADVAterra is projected to biodegrade to between 30-60% after 12 months, according to the company's laboratory research based on the STM D5511 test scheme — a pace equivalent to some natural fiber materials, which can take months to years to biodegrade.

Degradation rates, however, strongly depend upon individual factors such as surface area, moisture, exposure of the final article in the soil, temperature, types of microorganisms, etc.