Drying method for processing wood slab raw materials

Abstract

The invention discloses a drying method for processing wood slab raw materials, which belongs to a drying method for wood slab materials. The drying method includes cutting a portion, nearby the middle, of a wood slab raw material in a core dividing manner; and carrying out drying process so that moisture in the wood slab raw materials is completely or partially evaporated. After fast-growing log used as the wood slab raw material is cut from the middle in the core dividing manner, internal stress of the fast-growing log is released, deformation rate in a drying process is low, the original shape of the fast-growing log is basically kept after the drying process, the drying method is favorable for later-stage production and processing of wood slabs, utilization rate of the wood slab raw material is improved, simultaneously, the wood slab raw material is dried under a vacuum condition, temperature required by evaporation of the moisture is reduced, accordingly, the wood slab raw material is dried at relatively low temperature, loss of the raw material due to over high temperature is avoided, and a drying tank which is transversely placed is favorable for heating the outside of the raw material. In addition, steps of the drying method for processing wood slab raw materials are simple, and the drying method is applicable to drying various wood materials and is wide in application range.

Description

technical field [0001] The invention relates to a drying method for wood board raw materials, more specifically a drying method for processing wood board raw materials. Background technique [0002] With the continuous maturity of the panel furniture market, more and more large-scale furniture manufacturers and even forest and wood research institutes have begun to focus on the research and innovation of wood panel production technology, while the existing wood panel processing technology is to cut the dried raw materials It is composed of multi-layer thin boards of different thicknesses. Since most of the raw materials for wood boards are fast-growing forest woods with high water content, they need to be completely dried before they can be used for processing wood boards. However, the drying of existing wood board raw materials The process is mainly divided into three types. The first one is to place the raw materials directly at room temperature and wait for them to dry na...

AI Technical Summary

Problems solved by technology

[0002] With the continuous maturity of the panel furniture market, more and more large-scale furniture manufacturers and even forest and wood research institutes have begun to focus on the research and innovation of wood panel production technology, while the existing wood panel processing technology is to cut the dried raw materials It is composed of multi-layer thin boards of different thicknesses. Since most of the raw materials for wood boards are fast-growing forest woods with high water content, they need to be completely dried before they can be used for processing wood boards. However, the drying of existing wood board raw materials The process is mainly divided into three types. The first one is to place the raw materials directly at room temperature and wait for them to dry naturally. However, the drying principle of this drying method is relatively simple, and the drying speed is slow. The impact of air temperature and the surrounding environment of the storage place; the second is to place the wooden board raw material (that is, the whole fast-growing tree) in a vacuum environment, and dry it by heating in the vacuum environment. This drying process is relatively Compared with the aforementioned one, the drying speed is faster, but under the action of the internal stress of the fast-growing forest, it is easy to crack the raw material of the wood board, causing cracks to occur in the finished wood board in the later processing and reducing the quality of the product; After the fast-growing forest wood used as the raw material of wood boards is processed into thicker wood blocks, they are then dried according to the second method mentioned above. This method can improve the cracking situation in the second drying method above, but the dried wood blocks will still be damaged. During the drying process, affected by its internal stress, its thickness changes, resulting in some of the dried wood blocks being unusable and reducing the utilization rate of wood board raw materials. further improvement