Fiberboard is typically categorized into two main types based on its density: non-compressed and compressed. Non-compressed fiberboard is a soft material with a density below 0.4 g/cm³, offering a lightweight and porous structure. Compressed fiberboard includes medium-density fiberboard (MDF), also known as semi-hardboard, with a density ranging from 0.4 to 0.8 g/cm³, and hardboard, which has a density greater than 0.8 g/cm³. These products can also be classified by the slab-forming process—wet fiberboard, dry fiberboard, and oriented fiberboard—and by post-processing methods, such as ordinary fiberboard or oil-treated fiberboard.
Soft fiberboard is ideal for interior applications in public buildings due to its low weight, high void ratio, and excellent thermal insulation and sound absorption properties. It can also be specially treated to create a highly porous, lightweight version with adsorption capabilities, making it useful for air purification. Medium-density fiberboard offers a balanced structure with moderate strength and good workability, making it suitable for a wide range of uses, including furniture, TV housing, and more. Hardboard, available in thicknesses from 3 to 8 mm, is known for its high strength and durability. A 3 to 4 mm thick hardboard can even replace 9 to 12 mm of traditional sawn timber, and is commonly used in construction, shipbuilding, and vehicle manufacturing.
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