Technology of Manufacturing Interior Doors

Wood reacts to moisture fluctuations. So, before beginning the work, timber must undergo dried up to the value of residual moisture content not exceeding 8%. Properties of the wood depend heavily on the wood drying technology.

For example, there are technologies in which the hardwood (for example, oak) is dried for 47 days with four time steaming. The material is steamed to achieve internal stress relief and to avoid cracking of billets. In the past, wood was kept for several years in a dry cool place, excluding the ingress of direct sunlight. Today, modern dryers greatly accelerate this process. But the accelerated drying doesn’t guarantee that the wood will not warp or crack, in future.

Unwell dried wood, as well as changes of temperature and humidity causes the internal stress for the door, and as a consequence, the deformation causes cracking, warping and sizing of the door. That’s why for some expensive imported models we have to constantly keep almost “hot-house” conditions with variations in temperature and humidity of not more than 8%.

Usually ready door leaf is offered to be installed in an opening with the door frame, which is usually made on the same technology and the same materials as the frame of the canvas. Technological junctions of boxes are open and closed with frames, which are essential elements of design and are made of wood, MDF. They can be colored, tinted and covered with fine wood veneer.