Particle board

Particle board is an engineered wood product manufactured from wood chips, sawmill shavings, or even sawdust, and a synthetic resin or other suitable binder, which is pressed and extruded. Particle board is often confused with oriented strand board (also known as OSB), a different type of fiberboard that uses machined wood flakes and offers more strength.

History

The development of particle board began during the early 20th century, with the aim of utilizing waste wood from sawmills. Its popularity and production grew significantly after World War II, especially in Europe, due to the scarcity of solid wood.

Manufacturing Process

The manufacturing process of particle board involves several steps. Initially, wood particles are generated from various sources and then dried to reduce moisture content. These particles are then coated with a binder, after which they are arranged into a mat. This mat goes through a hot press, which compresses it into a dense, solid board. The density of the board can be adjusted by changing the pressure and heat applied during this process.

Types

There are several types of particle board, each serving different purposes:

• Standard Particle Board: Used for interior applications such as furniture, cabinetry, and flooring.
• Moisture Resistant Particle Board: Treated with a moisture repellent, making it suitable for areas with high humidity.
• Fire Retardant Particle Board: Treated with fire retardant chemicals to reduce flammability.

Advantages and Disadvantages

Particle board offers several advantages, including cost-effectiveness and efficient use of wood waste. It provides a smooth surface that is easy to paint or veneer, making it a popular choice for furniture and interior decoration. However, it also has disadvantages, such as lower strength compared to solid wood or plywood, susceptibility to moisture damage, and potential off-gassing of formaldehyde from certain binders used in its production.

Environmental Considerations

The production of particle board can have both positive and negative environmental impacts. On the positive side, it utilizes wood waste, reducing the need for logging of new trees. On the negative side, concerns have been raised about the use of formaldehyde-based resins, which can off-gas volatile organic compounds (VOCs) into the environment. However, many manufacturers now offer products made with reduced or no formaldehyde to address these concerns.

Applications

Particle board is widely used in the construction of furniture, cabinetry, and flooring. It is also used in building construction for underlayment, paneling, and in manufactured homes.

See Also

• Plywood
• Medium-density fibreboard (MDF)
• Oriented strand board (OSB)
• Engineered wood

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  Particle board

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  Cross section scan of particle board

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  Particle board manufacturing process