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HomeIndustry InformationPlywood standard specifications What are the main points of purchasing plywood

Plywood standard specifications What are the main points of purchasing plywood

2019-07-30

Building materials are used by everyone in our lives, and some people often deal with the building materials industry. Nowadays, new building materials in shopping malls are also increasing. Understanding some of the relevant building materials information is still very good for our lives, here we come to understand the plywood standard specifications, and what are the points of purchase plywood related content.

Plywood standard specifications

1. Plywood must have been seen by everyone. It is made by cutting a thin piece of wood board using a wooden planer, and then using an adhesive to combine three or more layers of glue into a sheet of material. Usually odd-numbered veneers are used, and the fibres of adjacent veneers are glued perpendicular to each other. The length and width of plywood are generally 1220×2440mm, and the thickness specifications are 3, 5, 9, 12, 15, and 18mm. The main tree species are hawthorn, willow, poplar, eucalyptus, etc. The main producing areas of plywood are Indonesia and Malaysia.

2. Plywood is also one of the most widely used materials for furniture construction, and it is also one of the three major panels of wood-based panels. It can provide aircraft, ships, trains, automobiles, construction and packaging materials. A set of veneers are usually formed by gluing the vertical layers of the adjacent layers in the direction of the wood grain. Usually, the front plates and the inner plates are symmetrically arranged on both sides of the layer or the core. The slabs that are arranged in a criss-cross pattern in the wood grain direction by the glued veneer are pressed under heating or no heating conditions. The number of layers is generally odd, even few are even, and the physical and mechanical properties of the vertical and horizontal directions are different. small. Types of plywood commonly used are plywood, plywood and the like. Plywood can increase wood utilization and is a major way to save wood.

What are the main points of purchasing plywood

1, in the purchase of plywood, we should first look at the material issues, then for different materials in the price will be different, when the decoration can be selected according to the fitting budget of the appropriate species. Any type of decorative material is oversupply in the current market, and many low-priced Lufthansa core plywood occupy the corner of the material market. Such plywood is made by surface coloring the poplar core board. The appearance is basically the same as that of the Liuxin core board, but the quality is quite different. The quality and density of the Liuxin core board are higher than that of the poplar core. Therefore, everyone must be careful when purchasing.

2, there are plywood appearance we need to check carefully to see if there is no small cracks or blisters and other incomplete traces. There is also a kind of plywood that is affixed by two veneers with different textures. Therefore, when buying, it is necessary to check whether the plywood patchwork is tight and whether there is unevenness or not. The furniture made with plywood with cracks is not good to see, because some plywood is glued, so we must observe whether its color is consistent and the texture is consistent. And whether the color of the wood is coordinated with the color of the furniture paint, the color of the plywood to be purchased must be coordinated with the overall effect of the decoration.

3, in the next step is to look at its work is not very fine, precisely because plywood by the two veneer combination paste, so there will be points on the opposite side. Plywood board surface should be clear wood grain, smooth front and flat, the reverse is not a good feeling of rough hand, so do not have nodes, if degummed plywood, not only affect the construction, but also cause pollution. Therefore, when the selection is made, the plate can be lightly tapped. If a crisp sound is emitted, the plate is stuck well. If a heavy sound is given, it indicates that the plate is degummed.

The relevant contents of the plywood standard specifications and the points for purchasing plywood have been introduced here. I hope this helps everyone. If you still don't understand where you can pay attention to more news, if you want to learn more about this news, please continue to pay attention to our website.

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