What is the difference between a multi-layer board and a plywood? I believe this is a question for many people. In fact, plywood is also called multi-layer board, plywood, commonly known as thin core board. Because plywood is a three-layer or multi-layered sheet material that is glued with an adhesive, it is also called a laminate, which is a major way to improve wood utilization and save wood. The following small series introduces you to the knowledge of plywood.
Basic knowledge of plywood
Plywood is one of the
commonly used materials for furniture. It is one of the three major
boards of wood-based panels. It is made of three-layer or multi-layered
plate material which is cut into veneers by wood segments or cut into
thin wood by wood and then glued with adhesive. Usually, an odd number
of veneers are used, and the fiber directions of the adjacent veneers
are vertically glued to each other.
Usage of plywood
Mainly used in
furniture manufacturing, interior decoration, various panels for
residential construction. Followed by industrial sectors such as
shipbuilding, car manufacturing, various military, light industrial
products and packaging.
Plywood specification thickness
Plywood is made up of
thin wood chips, with plywood, plywood, etc., and occasionally odd
numbers. The plywood specifications are generally 2440mm long and 1220mm
wide. According to the combination of different laminates, the
thickness of the plywood is also different. Generally, there are several
specifications such as 3 PCT, 5 PCT, 9 PCT, 12 PCT, 15 PCT, and 18 PCT.
Of course, depending on the special circumstances. Other thicknesses.
Advantages of plywood
It can make
reasonable use of logs and does not produce sawdust. Light weight, high
strength, beautiful texture, small insulation, small deformation,
convenient construction, no warping, and good tensile mechanical
properties.
Disadvantages of plywood
The cost is higher, not as smooth as the MDF. If there is insufficient drying or there is a problem with the production process, the external force is difficult to adjust when the sheet is deformed. When the splint is used as the base layer, and the surface of the veneer board, aluminum-plastic board and other decorative sheets are bonded, the medium-density board is not as strong as the base layer.
Type of plywood
Category one
1. Plywood for
finishing: This kind of plywood is mainly used for furniture such as
furniture, sewing machine table and various electrical enclosures that
need to be coated with transparent paint.
2. Plywood for decoration: This type of plywood is mainly used as
decoration materials for buildings, furniture, vehicles and ships.
3. General plywood: This type of plywood is suitable for packaging, padding and other purposes.
4. Thin wood decorative plywood: This type of plywood is mainly used
as a high-grade decorative material for buildings, furniture, vehicles,
ships, etc.
Category two
1. One type of
plywood is weather-resistant and boiling-resistant plywood, which has
the advantages of high temperature resistance and steam treatment.
2. The second type of plywood is water resistant plywood, which can
be immersed in cold water and impregnated with hot water for a short
time.
3, the three types of plywood is moisture-resistant plywood, can be
dipped in cold water for a short time, suitable for indoor use at room
temperature, for furniture and general construction purposes.
4. The four types of plywood are non-durable plywood, which can be
used under normal indoor conditions. The general purpose plywood is made
of beech, eucalyptus, ash, birch, elm, poplar, etc.
purchase of plywood
quality of plywood
When buying, don't
just buy cheaper. The most expensive decoration in the market is the
imported Liuqi three-ply board. The "printing board" is better than the
"horse board". The price of this kind of plywood is also two or three
yuan.
The material of wood
When choosing, be sure to pay attention to whether the panel is willow wood or other hardwood. In contrast, the willow noodles are better, and it is better to use imported willow veneer
The grade of plywood
Imported willow wood plywood is mainly BB and CC grades, and AA grade is rare. Be wary of bad business flicker, carefully observe the packaging, the general imported plywood is printed on the outer packaging with the import mark, marked with English import origin.
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