deep thermo US southern pine board

Heat treatment is a new wood processing method already adopted in commercial production.ThermoTimber is manufactured under controlled heating conditions at temperatures of 170...230°C. The degree of heat depends on what type of wood is being processed and what type of characteristics are desired. The process involves no chemicals or additives. Since the only outside agent used is moisture, we can proudly claim this to be a natural product. During the ThermoTimber process, the cellular structure changes. The hemicellulose starts to break down and the pitch in coniferous woods evaporate.

During the ThermoTimber treatment, the following changes occur:

1. colour changes from light to dark brown
2. deformation due to moisture variations decreases by 50-90%
3. equilibrium moisture content lowers
4. thermal conductivity decreases by 0-30%
5. overall heat-transfer coefficient k improves
6. bending strength decreases by 0-30%
7. elasticity decreases, but rigidity increases
8. wear resistance improves
9. wood becomes lighter in weight
10. biological durability improves
11. pitch evaporates
12. dead knots fall out
13. cellular structure changes - wood "ages" structurally

As it appears from the above, ThermoTimber offers a quite new opportunity e.g. for the carpentry industry to produce environment-friendly wood products of a new kind of structure