Density board is also called "fiberboard"
≫ & gt; & gt; & gt; a kind of man-made board, which is made of wood fiber or other plant fiber and applied with urea formaldehyde resin or other applicable adhesive, and pressed under the condition of heating and pressure.
According to the different density, it can be divided into high density board, medium density board and low density board.
Characteristics of density board: soft and impact resistant, easy to reprocess.
At ordinary times, the most commonly used is medium density (MDF), which is 450-880kg / m3. MDF is a kind of man-made board which is the closest to natural wood in all kinds of board making. Its structure is uniform, density is moderate, board surface is smooth and delicate, it is easy to carry out various finishing treatment, size stability is good, core layer is uniform, board surface and edge have good mechanical processing and molding performance at the same time, thickness and size specifications change a lot, which can meet a variety of needs. MDF has more physical and mechanical properties than particleboard, even it is stronger than natural wood, so it has a wide range of applications, such as high-end furniture manufacturing, cabinet door panel, sound shell, musical instruments, car and ship interior decoration, construction and other industries. In addition, most of our common laminates are high-density boards.
In foreign countries, the density board is a good material for making furniture, but because the national standard for height board is several times lower than the international standard, the use quality of density board in our country still needs to be improved. The biggest disadvantage of density board is that it is easy to get wet and deform. Some density boards with serious moisture will even make the surface veneer black. Particleboard
≫ & gt; & gt; & gt; it is a thin plate made of wood chips as the main raw material, then infiltrated with glue, and then pressed with additives.
According to the pressing method, it can be divided into extruded particleboard and flat pressed particleboard.
The difference between particleboard and density board is that the raw material of particleboard is not completely crushed into fibers, but crushed into particles, which is generally known as shavings, and then added with glue for pressing; while density board is completely crushed into fibers and then added with glue for pressing. Because particleboard is mainly composed of larger wood fiber (compared with density board), its expansion rate is only 8% - 10% even when it is soaked in water, so it will not expand as much as density board.
The intermediate base material of the melamine board for making the cabinet is particleboard.
In fact, particleboard is a widely used board in foreign countries. Almost all cabinet factories in Europe and America use particleboard. But the domestic people generally think that particleboard is a kind of low quality board. The problem is that the particleboard sold on the market at present is the products of some small factories. Because of the backward equipment and production technology, the particleboard produced by these factories is very poor in bearing capacity, bending resistance and deformation strength. It is the quality of this kind of board that tarnishes the reputation of particleboard, which makes consumers mistakenly think that Particleboard Poor quality.
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