When we buy furniture, in addition to observing whether the shape is exquisite, we also need to pay attention to the quality of its plates. There are many kinds of plates on the market at present, among which plywood and multi-layer plates are the plates that we often come into contact with in our lives. So what is the difference between plywood and multilayer board , and what are the advantages and disadvantages of plywood, the following article will introduce it to you.
What is plywood
The base material of plywood is made of wood and veneer or thin wood cut from wood, which is glued with a special adhesive to form a three-layer or more than three-layer board. Plywood is a kind of artificial board, which is often used in furniture, construction, transportation and other fields, which greatly improves the utilization rate of wood and can effectively save wood.
What is a multilayer board
Multi-layer board is also known as triple plywood or plywood, which is a kind of board that we often use in furniture making. Multi-layer board is also a kind of artificial board. It is a board composed of a group of veneers that are perpendicular to each other according to the direction of wood grain. The texture is light, the strength is excellent, and it has excellent elasticity and toughness. It is widely used in our home Under renovation.
The difference between plywood and multilayer board
What is the difference between plywood and multilayer board? Although the two have different names, they actually belong to the same kind of board. The multi-layer board is actually a kind of plywood. The plywood is made of three-layer or multi-layer solid wood veneers pressed by glue. The adhesive layer board is processed with the inner layer graphics first, and then made by printing the outer single-sided or binocular substrate, and then added with adhesive to hot press, but there are certain differences in the manufacturing process, other The aspects are basically the same.
Advantages of plywood
1. Light texture, natural texture, high strength, not easy to deform
2. Plywood is not prone to warping, and has excellent tensile strength and bending performance.
3. The plate is relatively complete and the price is relatively low.
Disadvantages of plywood
1. The surface of the plywood is relatively porous. If it is left outdoors for too long, it will easily become wet and heavy.
2. If the plywood is not completely dried or the production process is poor, it is easy to deform.
3. When glue is added in the production process of plywood, a certain amount of formaldehyde will be released.
Summary of the article: The above is the introduction about the difference between plywood and multi-layer board, and the advantages and disadvantages of plywood. If you have other related needs, please pay attention to Qijia Information.
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Pneumatic valve is a kind of valve controlled by air pressure, which is widely used in industrial automation control system. Its main applications include the following aspects:
1. Fluid control: pneumatic valve can be used to control the flow and direction of liquid or gas, such as controlling the flow in the pipeline, exhaust gas emission, etc.
2. Pressure control: pneumatic valve can be used to control the pressure of fluid, such as controlling the pressure of compressed air, regulating the pressure in the hydraulic system, etc.
3. Temperature control: pneumatic valve can be used to control the temperature of fluid, such as the temperature of heating or cooling system.
4. Automatic control: pneumatic valve can be linked with sensors, PLC and other equipment to realize automatic control, such as automatic production lines, robots, etc.
5. Safety control: pneumatic valve can be used for safety control, such as controlling emergency stop, preventing overload, etc.
In general, pneumatic valve plays an important role in industrial automation control system, which can improve production efficiency, reduce costs, and ensure safety.
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