Why is pine wood difficult to dry?

Pine is considered one of the difficult woods to dry, primarily due to its woody structure and composition.

1. Uneven density: The fibers of pine wood are relatively thin and soft, resulting in uneven density within the wood. This causes the wood to dry at an inconsistent rate and is prone to cracking and warping.

2. High moisture content: Compared with other woods, pine has a higher moisture content. It takes longer for the moisture inside the wood to evaporate completely. If moisture is removed too quickly, the surface of the wood dries too quickly while moisture remains inside, causing the wood to crack.

3. High resin content: The resin content in pine wood is relatively high, and the resin plays a hindering role in the drying process of the wood. The resin forms a film that blocks moisture loss, making the pine wood dry more slowly.

Therefore, in order to obtain high-quality dried pine wood, it is necessary to adopt appropriate drying methods and strictly control parameters such as humidity and temperature during the drying process to avoid problems such as cracking and warping.