Developed in Norway, the Kebony® technology is an environmentally friendly, patented process that enhances the properties of sustainable softwood with a bio-based liquid. The process permanently modifies the wood cell walls, giving Kebony premium hardwood characteristics and a rich brown colour.
There are various wood modification methods, all of which permanently alter the structure of the cell walls. These include methods like heat treatment, acetylation and polymer grafting.
The Kebony® technology modifies wood by forming stable, locked-in furan polymers in the wood cell walls. These increase the dimensional stability, as well as durability and hardness, of the wood. The process is based on impregnation with furfuryl alcohol, which is produced from agricultural crop waste. Kebony thus uses a plant-derived waste product to give enhanced strength and durability to another plant product – namely wood.
Step 1: Impregnation
Impregnation is the process in which the wood is soaked in a bio-based liquid. During impregnation, furfuryl alcohol produced from a bio-based liquid is imparted into the wood to make it dimensionally stable wood.
Step 2: Curing and Drying
After impregnation the wood is heated – whereby the polymerisation of the furfuryl alcohol occurs. This step is referred to as the curing step. The resulting polymer, which is now permanently locked into the wood cells, is stable and will not disintegrate or leak out of the wood.
Step 3: Kebony Wood
After treatment, the wood cell walls are 50 percent thicker due to the stable, locked-in polymers. This permanent modification of the wood cell walls gives the final wood product outstanding stability, the maximum amount of hardness and a guaranteed long life. Kebony wood also provides a high level of safety as the wood does not splinter and contains no toxins or chemicals, nor does the wood get too hot in the summer.
Furthermore, Kebony wood is resistant against rot and fungi and other wood-destroying microorganisms in above-ground context. Kebony is a low-maintenance material that does not require any additional treatment beyond normal cleaning, thus, no oils or other impregnation solutions.