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Introducing PrimaLoft® Bio™

PrimaLoft® Bio™ is an additive technology that enables polyester and fabric fibers to biodegrade* in the environment

PrimaLoft® Bio™ has been specifically designed to biodegrade* in the environments where the vast majority of plastics eventually find themselves: landfills and ocean water.


PrimaLoft® Bio™ is a revolutionary breakthrough that offers a previously unattainable level of performance and climate footprint, reducing microplastics in our landfills and oceans, PrimaLoft® Bio™ is a first-of-its-kind technology and represents a critical component to a product’s lifecycle – a safety net should the product shed during laundering or end up in a landfill.

It is designed to return to materials found in nature.

Designed to biodegrade* 

According to independent testing, PrimaLoft® Bio™ reached 93.8% biodegradation* in 646 days when exposed to an accelerated landfill environment. At the conclusion of this test, the remaining material was found to contain no trace of plastic, leaving behind only natural, carbon based elements!

What is even better, additional independent testing concluded that the soil left behind remains perfectly suitable for plant growth. 


Fit for chemical recycling and works with virgin and recycled pet Biodegradability is an end-of-life solution that works in harmony with the circularity model, and fibers maintain a 95% yield rate through the chemical recycling process. 


PrimaLoft® Bio™ biodegrades* only by hydrolytic-degradation, the destruction of plastics by hydrolysis exposure to moisture under certain conditions, that results in the scission of molecular bonds, and PrimaLoft® Bio™ will eventually leave no traces of microplastic behind. 

UV degradation and OXO-degradability testing confirmed the resistance of PrimaLoft® Bio™ fibers to degrade and fragment into smaller pieces of plastic. 

Fibres for hygiene and wipes

The PrimaLoft® Bio™ technology makes synthetic materials biodegrade in a hydrolytic process, leaving only elements that can be found in nature, and works in harmony with viscose, cotton, wool and other biodegradable materials. 

We make biodegradable fibers for these applications and technologies:

  • Spunlace – in Virgin and Recycled PET 
  • Solid PET for ADL 
  • Bico fibers CoPET/PET, PE/rPET, Bio-based PE/rPET, PE/PP 

The tests don’t lie. 

And neither does nature. PrimaLoft® Bio™ has been tested on 40 fibers and fabrics in more than 200 independent tests, and we continuously update the test results as new information becomes available. You will always find our latest result right here.  

Please contact us if you want to know more about PrimaLoft® Bio™ 


Is PrimaLoft® Bio™ available today?

YES! PrimaLoft® Bio™ is already available from several locations worldwide, both virgin and recycled from a controlled supply chain. There is full capacity and delivery guarantee. And that’s why we can start fixing polyester right now.

How can we be sure it works on our set-up?

Before initiating full production, a sample is sent to 3rd party lab for an accelerated test that measures the initial behavior of the fiber. After the QC test for up to 90 days, we can verify that the technology works, and the staple fibers are approved.

Who else is using PrimaLoft® Bio™?

A long range of well-known brands within outdoor garments have already implemented PrimaLoft® Bio™ in their fabrics and insulation, from Jack Wolfskin, Maloja and Katmandu to 4F and Icebug.

Can PrimaLoft® Bio™ be used for my products?

PrimaLoft® Bio™ can be added toany type of polyester and fabric fiber, from wadding, filtration, and automotive to acoustics, medical, and hygiene products.

Will PrimaLoft® Bio™ biodegrade on shelves?

No, PrimaLoft® Bio™ only biodegrades in environments with naturally occurring microbes, such as landfills, oceans, and wastewater. PrimaLoft® Bio™ comes in normal bales and has a normal shelf life with no need for special care or treatment during storage and transportation.

Is PrimaLoft® Bio™ scalable?

Yes, we are already commercial with BICO (low melting fibers), solid, and hollow fibers – and have no capacity issues.

Does PrimaLoft® Bio™ require a change in production set-up?

No, PrimaLoft® Bio™ has the same characteristics and performance as regular PET fibers with the same output and same whiteness, and it blends well with natural fibers.

Will PrimaLoft® Bio™ biodegrade during usage?

Again, it’s a no. PrimaLoft® Bio™ fibers in products do not biodegrade during usage. Only microplastics that leave products ending up in landfills or oceans will biodegrade, so there really is no special care required.

How does PrimaLoft® Bio™ work with EU’s single-use plastic directive?

Polyester is a polymer, and therefore the end product could be considered as a “plastic”. This means that different measures from Single-Use Plastic Directive can be applied to your product.

Can PrimaLoft® Bio™ be recycled?

Yes, PrimaLoft® Bio™ can be chemically recycled and fits perfectly in a circular lifespan, and PrimaLoft® Bio™ maintain a 95% yield rate through the chemical recycling process.

How does PrimaLoft® Bio™ work?

Polyester is a complex molecule that naturally occuring microbes have a hard time digesting, why standard polyester does not biodegrade. PrimaLoft® BioTM optimizes the polyester or fabric fiber with a simple sugar, making the fibers easier and more pleasant for microbes to digest. Essentially, we make your fiber a Boston Cream Donut for microbes.