**4.2 Air drying process**

All the compressed oil palm fronds then have been dried in sun-drying for 12 hours until almost the moisture is removed from the fibre and their moisture

**Figure 16.** *The skin peeled off oil palm fronds.*

**Figure 17.** *The compressed oil palm fronds.*

**Figure 18.** *Compressed oil palm fronds under sun-drying.*

*Processing and Properties of Oil Palm Fronds Composite Boards from* Elaeis guineensis *DOI: http://dx.doi.org/10.5772/intechopen.98222*

content was about 12% measured by MC meter as shown in **Figure 18**. This air-drying mainly enhance their durability against fungi and insect attacks.
