• Renewable Functional Fillers

Lighter, Cleaner, Stronger - elevate your product with Renewable Functional Fillers

What is the best RFF for your product?


What are RFFs?

RFF is a truly sustainable alternative offering performance features significantly improve the environmental footprint while at the same time adding technical benefits not present in today's product mix.


Reduce your Emissions

UPM BioMotionTM Renewable Functional Fillers (RFF) are made from responsibly sourced hardwood from regional, sustainably managed forests. The wood is sourced exclusively from certified and sustainable forest operations and we build local value chains with strict responsibility standards. Sustainably managed forests combine industrial use of wood with ecosystem protection and forest growth and play a vital role in mitigating climate change.


The unique properties of the RFF facilitate the transition towards a more sustainable rubber and plastics industry, helping to reduce the ecological footprint of rubber and plastics applications considerably. RFFs contain more than 94% renewable carbon (certified bio-based content by DIN CERTCO):


> 90% CO₂

have a 90% lower carbon footprint than standard furnace carbon black (see infographic).

> 25% lighter

are at least 25% lighter than conventional fillers – lighter means higher material-efficiency and better fuel economy.

PAH free

are free of polycyclic aromatic hydrocarbons (PAH).


Climate change, raw material scarcity, regulatory pressure, and consumer preferences for sustainable products are critical drivers for replacing fossil-based materials with innovative, renewable, and sustainable products.

Mechanical Rubber Goods (MRG) are used worldwide in many applications, including automotive parts, household articles, rubber parts that are daily in contact with humans.

Durability, processing characteristics like injection moulding, extrusion are significant for this industry. In specific applications, the ascetics properties are the key. These products are not made for single use but are designed for a longer lifetime.

UPM BioMotionTM RFF are a versatile product, built to increase the sustainability performance of a various end-use applications made from thermoplastics. We will provide more detailed data on benefits, technical performance as well as application specific information on thermoplastics end-used as we build our business.


Key Features

RFF are 100% electric insulating

This feature effectively prevents electrochemical corrosion when in direct contact with light metal alloys like magnesium and aluminium and improves the lifetime of the metal parts.

Surface functionalities

Driven by a total oxygen content of greater than 25wt%, it enables chemical bonding of RFF to polymer matrices.

Clean & safe

RFF is a PAH free product. The absence of carcinogenic substances banned by regulations, making it a safe solution to produce rubber and plastics products in contact with humans.


This is why you can trust us

Rubber Lab – Application Development Center

We have equipped our UPM Rubber Lab with the most modern rubber & testing appliances. We guide our customers to select appropriate grades, processing parameters and process techniques for various applications and provide after-sales services to solve technical problems.

Our experienced technical experts are here to shape your ideas and evaluate your requirements to facilitate a ready-to-use solution from mixing to testing.

Learn more


Exclusive distribution agreement with KRAHN Chemie


UPM Biochemicals and KRAHN Chemie Deutschland GmbH signed an exclusive distribution agreement to market UPM BioMotion™ Renewable Functional Fillers (RFF) in Germany, Austria and Switzerland. RFF are a completely new category of functional fillers, replacing fossil-based carbon black and precipitated silica.

Read the press release

Sustainability boost for an entire industry


UPM BioMotion™ Renewable Functional Fillers (RFF) is going to be a success. Why? “They are a real revolution for the approximately 15 million metric ton market for functional fillers in rubber and plastics, which is currently dominated by industrial carbon black and precipitated silica – two very CO₂-intensive products,” says Dr Christian Hübsch.

Read the article

Christian Hübsch on RFF


With its new, 100% wood-based Renewable Functional Fillers (RFF), UPM aims to revolutionize the rubber and plastic industry. But how exactly? And what makes the new material so superior? Christian Hübsch, Director Sales & Marketing at UPM Biochemicals, explains the details.

Read the interview

RFF Distribution Agreement


UPM Biochemicals Sales GmbH, Leuna, and Lehmann&Voss&Co. have reached an exclusive agreement regarding the distribution of renewable functional fillers from the UPM BioMotion™ X10, X20 and X40 product range in Germany, Austria, Switzerland and the United Kingdom for application in the field of elastomers.

Read the news release

Our Milestones

We plan to produce several thousand metric tons of RFF in our modern biorefinery located in Leuna, Germany. After the groundbreaking in 2020, the construction is in full swing. We expect the technical start-up for the end of 2022, with production ramped up in 2023.


Do you have any questions?

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