Summary： Plywood is now mainly used on the outer surface of the model, such as a curved place, with good flexibility. Plywood generally has three plywood, five plywood,
Plywood is now mainly used on the outer surface of the model, such as a curved place, with good flexibility. Plywood generally has three plywood, five plywood, nine plywood and so on. One unit is one layer, and some are called three-layer boards. One-layer thickness is 1mm. Each layer of veneer is perpendicular to 90°, which not only increases strength but also reduces deformation.
1. Classification of composite flooring
The solid wood composite floor has the advantages of beautiful and natural solid wood floor, comfortable foot feeling and good thermal insulation performance; it also overcomes the shortage of the solid wood floor due to the contraction of the monomer and the easy cracking of the floor. Nowadays, in order to prevent the living environment from deteriorating, countries around the world generally attach importance to the protection of forest resources. Compared with solid wood flooring, parquet can save rare wood resources. In addition, the solid wood composite floor is easy to install, and generally no keel is required. But the ground leveling is required.
The solid wood composite floor can be divided into three categories: three-layer solid wood composite floor, multi-layer solid wood composite floor and joinery composite floor. Three-layer solid wood composite floor is mostly used in the room decoration.
The three-layer structure solid wood composite floor is formed by the staggered lamination of three layers of solid wood. The surface layer is made of high-quality hardwood slats. The commonly used tree species are ash, birch, beech, oak, maple and cherry wood. The middle is cork planks, and the bottom is spin-cut veneer, arranged in a crisscross pattern. This structural composition makes the three-layer solid wood composite floor not only have the advantages of ordinary solid wood flooring, but also effectively adjusts the internal stress between the wood, and improves the shortcomings of the large change of wood with seasonal dry humidity.
The solid wood floor has a good foot feel, natural texture and color, and the hardness is slightly worse. And because it is natural, the difference in texture and color is large, and the wooden keel is required when paving, and the price is relatively high.
High-strength composite flooring has higher hardness, good wear resistance, simple and convenient paving, and lower price, but the foot feel is slightly worse.
Solid wood flooring absorbs the advantages of the above two, the price is between the two, but the hardness is the worst of the three.