A large quantity of timber used in India is not properly dried or seasoned & treated resulting into development of defects like warping, cracking, splitting or decay and insect attack in the products.
In Western countries Timber is not allowed to come out from saw mill unless it is seasoned and treated. It is compulsory to season and treat.
A scientific study of wood seasoning process is important, as a large number of commercially important timber species is very problematic to seasoning. Climatic conditions also are very exacting for various wood works such as joinery, furniture, handicraft products etc. During recent years the need of seasoning in timber has become imperative due to the compulsion of use of timber from short rotation plantations. The Wood Seasoning branch undertakes research work related to the drying behavior of wood, study of shrinkage and wood-water relation ship and evaluation of kiln drying schedules. Other priorities include investigation for suitability of Indian timber for industrial uses such as pencil making, wooden accessories used in cotton & jute mills, and shoe lasts as well as investigation of bending behavior of different timber species for making bent wood articles.
Wood, a renewable material, occupies a prime position as a raw material, Its versatile Nature has made it unique in many applications. In most of the uses of wood, longevity of wood is very important.
Green Wood in growing trees contains considerable quantities of water/moisture. Most of this moisture has to be removed in order to obtain satisfactory performance from the wood in use. Freshly felled wood contains moisture roughly 100 percent based on the oven dry weight of wood. A well seasoned piece of wood should on other hand contain only 10 to 12 percent moisture. An important object of seasoning is to dry the timber to the equilibrium moisture content before use, so that gross dimensional changes through shrinkage, which inevitably occurs in green wood as it tends to attain equilibrium with the surrounding atmosphere, are eliminated.
The method and technology we use is "KILN", which happens to be the most energy intensive amongst wood processing operations claiming an estimated 50-70 percent of the total energy consumed in manufacturing wood products. The timber is stacked in the chamber. Then with Air blower heat exchanges in chamber at pressure. Timber is kept in chamber for 6 to 12 days as per its fiber property. These removes all possible unwanted moisture through fibers.
The seasoning Kiln is a chamber equipped with arrangements for heating and dehumidifying the drying air to desired conditions of temperature and relative humidity and its circulation over the surfaces of timber stacked inside. Fans are used for faster circulation of air.
+91-11-64990008
+91-11-6817099+91-11-26811832
+91-11-41811832+91-11-26817098
ac@tripti.in
