Zhejiang Anji Hengchang Chair Industry Co., Ltd.

Why Should Wooden Dining Tables and Chairs Reserve Expansion Joints?

Have you ever observed high-end wooden furniture, especially mahogany furniture, you will find that there is often a gap not wide or narrow at the side of the furniture panel. This seems to be one of the characteristics of a wooden chair and table. The wooden dining room table is made of solid wood as the main material.

Generally, the furniture made of solid wood is rarely mixed with other materials. The main materials and auxiliary materials are rarely used. The four legs and the panel are all solid wood. Most of the connections between the holes and the panels are the same. We will introduce to you why the wooden dining chairs and tables should leave an expansion joint.

Ⅰ. Reserve expansion joints to prevent the deformation of wooden dining chairs

The longitudinal shrinkage of the wood is not large, and generally, there is no need to leave expansion joints at both ends. Some manufacturers leave seams on all sides, which look relatively good. There are also some manufacturers who make furniture without leaving expansion joints, but not leaving them does not mean that there are no expansion joints.

Because the manufacturer does not have absolute certainty about the drying of wood, the moisture content of wood is generally higher than that of air, so even if no expansion joints are left during production, there will be seams after the furniture is made, and a considerable part of furniture has seams regardless of the dry and wet seasons.

In those areas with large differences in dryness and humidity throughout the year, the expansion joints of wooden dining chairs must be made. The air humidity in the rainy season is high. Although the wood is artificially dried, it will still absorb moisture during the production process of furniture, and the volume will increase. Generally, no expansion joints are required.

Expansion joints will also appear when the climate is dry in winter; in spring and winter, when the air is dry, and artificially dried wood is used to make furniture, expansion joints are generally left, otherwise, after the arrival of wet summer, the large edges will be swelled.

Ⅱ. Reserve expansion joints in the wooden dining tables and chairs to prolong the service life

1. The expansion joint is to prevent the frame or corner tenon of the furniture from cracking when the wood shrinks or expands under the influence of the external environment, resulting in the loosening of various parts of the furniture and cannot be used normally.

2. In order to reduce the deformation of wood, wood has a strict drying process before it is made into furniture, and some may take more than a month to bake.

In order to control the quality of standard manufacturers, the water content of wooden dining chairs sold in different regions is also different. Even so, in order to prevent the deformation of furniture, expansion joints must be reserved.

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