The difference between multilayer plywood and mdf board
Multilayer plywood characteristics
1. Multilayer plywood is processed from solid wood material, this kind of board is also called plywood because it is the use of crisscrossed multilayer plywood as the base material, in the selection of high-quality precious wood as the panel, and then after resin glue in the hot press through high temperature and high pressure processing. The production method of multilayer plywood is often made by the inner graphics first, and then printed etching method into a single or double sided substrate, and incorporated into the specified layer, heated, pressurized and bonded, after the drilling is the same as the double-panel plating through hole method.
2. Healthy and environmentally friendly solid wood multilayer plywood avoids the more use of liquid glue in the process of sheet forming. Formaldehyde exists in liquid glue, so solid wood multilayer plywood is more environmentally friendly and healthier than plywood. Solid wood multilayer plywood with crisscross arrangement of multilayer plywood as the base material, through cold pressing, hot pressing, sanding, health and other several processes produced. The unique production technology and raw material selection of solid wood multilayer plywood determine its unique quality.
3. The advantage of solid wood multi-layer board is strong compressive ability, not easy to deformation cracking, dry shrinkage expansion system is very small, has a better ability to adjust indoor temperature and humidity, surface layer can show natural wood grain, simple pavement.
4. The solid wood multilayer plywood because in the production process after the coating resin glue in the hot press through high temperature and high pressure production, so in terms of environmental protection, how much will have the release of formaldehyde, there is glue pollution, but it is the least amount of plastic artificial board.
MDF board features
1. Density board also known as fiberboard, is a man-made board made of wood fiber or other plant fiber as raw material and urea formaldehyde resin or other applicable adhesives. According to the different density, it is divided into high density board, medium density board and low density board.
2. The density board is easy to be coated and processed. All kinds of paints and coatings can be evenly coated on the surface of the density board, which is the first base material for the paint effect.
3. Excellent physical performance, uniform material, no dehydration problem.
4. The surface of the density board is smooth, the material is fine, the performance is stable, the edge is firm, and the shape is easy, so as to avoid the problems of decay and moth eating.
Density board and multilayer board, which is good?
Comparison of mechanical properties
Each sheet has its own advantages and disadvantages, so we need to compare from different angles. From the mechanical properties, the strength of the multilayer board is better than that of the density board. Because the raw material comes from the wood of the whole tree, it retains the original fiber connection strength after the processing is finished, so it is more load-bearing. The raw material of density board is mostly from wood processing waste material, including many branches that can not be used directly, completely separated into fiber and then pressed into board, the strength is much worse.
Comparison of waterproofing performance
In general, the waterproof performance of the two boards is not particularly good, but the density board is worse. Because in the process of production, it has broken all the fibers, and then glue to glue, but certainly not as dense as the original wood. However, after treatment, these two kinds of plates can make waterproof performance significantly improved, especially through the surface covered with decorative paper, can be directly made into a desktop, even if it is directly sprinkled on the above is no problem at all. However, unprotected edges should be kept out of the water as much as possible, or they will be the first to be damaged.