METHOD OF DRYING JAPANESE CEDAR BOARD AT LOW TEMPERATURE, CAPABLE OF DECREASING MOISTURE CONTENT IN JAPANESE CEDAR BOARD DOWN TO ABOUT 10

摘要

To make a Japanese cedar board nearly free from deformation (warp, crack or the like) caused by absorbing moisture in air, which is a characteristic of timber, and suitable for use in a variety of applications.SOLUTION: First, drying of Japanese cedar boards is started using a dryer and is continued for 27 operating days at a rate of 9 hours a day using the dryer (the drying schedule is confirmed every time), while supplying the dryer with steam for drying from an in-house boiler. Second, the degree of drying is checked on the 26th day and the 27th day of the operating days by measuring the moisture content thereof using an in-house measuring apparatus, which is carried out by temporarily stopping the dryer and entering thereinto from a checking door of the dryer (to prevent the timber from contacting air present outside the dryer to an extent practicable), and if the moisture content reaches a specified value (8 to 10%), the drying by the dryer is finished at the 27th day of the operating days.SELECTED DRAWING: Figure 1