The Difference Between Particle Board and Density Board
Particleboard is made of wood after high temperature and high pressure processing. The middle layer of particleboard is wood chips, and the two sides are finely organized wood chips, which are pressed into a board. The density board is made of plant wood fiber as the main raw material by hot grinding, paving, hot pressing and other processes.
The difference between particle board and density board:
1, Density board is wood powder after the limitation of molding, appearance flatness is good, so when the appearance needs to be milled, molding, and the appearance is soft texture (such as stencil panels), often use the medium density board to ensure that the appearance is flat after the film. However, because the material is all very fine wood powder, from the moisture-proof function, if the particleboard is soaked in water, because the particleboard has wood long fibers, more of the wood structure is retained, so the particleboard expansion to a certain extent will no longer expand (8%-10%). Therefore, the moisture-proof comprehensive function can be said that particleboard is better than density board. Therefore, there is a certain reason that European and American furniture kitchen cabinet companies do not use density boards as box materials.
2, Europe and the United States almost all the furniture, kitchen cabinet factories are using particleboard, such as Germany's prestigious BERLONIROSSI, S-BEKA, etc. are using particleboard, several domestic factories due to the use of a full set of imported equipment (investment of more than 200 million yuan), can also produce molecular structure tight, high bending strength particleboard. In general, if the exterior decoration surface is imported from Germany, most of them are produced by large factories, and are used for high-end furniture, buyers and suppliers pay more attention to the promise of the market, so there are fewer problems. Only now there are some domestic small factories can only produce some common white plate, beech wood grain board, due to the backward equipment, production process, the production of the plate in load-bearing and resistance to zigzag, deformation strength are poor, the furniture made after fastening simple loose, loose and then fastening strength lack, rapid expansion after water. And the formaldehyde content is very high, dozens of times more than the national standard, great damage to the human body. It is the quality of this board that tarnishes the reputation of particleboard, and consumers mistakenly believe that particleboard is of low quality. The density board has not been very long in the past, and the original trees are becoming more and more rare, so a board is needed to replace it. So there is a density board, but because the density board production process will use a lot of glue, if the quality of these glue is not up to standard, perhaps unstable density board formaldehyde is too high, the density board mainly detects formaldehyde emission and structural strength, density board according to formaldehyde emission E1 and E2, formaldehyde emission beyond 30mg/100g unqualified. Generally speaking, most of the density boards of large-scale manufacturers are qualified. Most of the density boards on the market are E2, and the E1 is less, from the whole, the environmental protection coefficient of particleboard is much higher than that of density board. And the density board is mostly used for door panels or modeling, and is not practical for making cabinet bodies.
3, The density board is composed of powder, water is easy to swell. Therefore, it can not do the box, and because of its poor nail eating, under normal circumstances, the density board nail hit the surface and then pulled out, so that it can not be repeated 5 times, it can not be used. However, particleboard is made of wood chips, limited into a board, has the characteristics of wood, has a certain nail holding force, and can be repeated about 10 times under normal circumstances.
4. The middle layer of particleboard is wood long fiber, and both sides are arranged with fine wood fiber, which is limited into a board. The molecular structure is tight and the bending strength is high. We did the same test and selected MDF with the same thickness and density and pellet board with the same weight of 50 kg. After 2 months, MDF was seriously deformed, while pellet board was slightly deformed). Particleboard because of its strong hardness, nail grip can be strong, lateral load-bearing can be good, so suitable for making the connection between the cabinet and the laminate, now all the cabinet factories in Europe and the United States are using particleboard, and the well-known domestic cabinets are basically using particleboard as the cabinet. The density board is suitable for door panels because of its uniform density. Some brands make the cabinet full of particleboard or density board, which is unscientific, and it is very simple to deform when it is long.
