Development and Market Potential of Particle Board

Discusses the impact of particle board on existing wood-using industries and outlines its future potential. Lists specifications for composition boards used as core material for veneered furniture panels. One of the basic technical advantages of particle board is the fact that a specific board can be designed to accomplish a specific purpose. For example, the requirements of a board for making wood-veneered panels should have the following physical properties: Density–40-45 lbs. per cu. ft. (Sp. Gr. 0.64-0.72). Transverse strength (MOR)–over 1500 psi. Tensile strength–over 700 psi. Water absorption–4 inches by 4 inches by 3/4 inch specimens–2 hrs. 0.3 percent–12 hours. 15 percent hardness–800 lbs. Thermal conductivity–approximately 0.75. Screwholding power–No. 8 wood screw driven 3/4 inch in l/8 inch pilot hole requires over 300 lbs. for withdrawal. Good dimensional stability, machinability, gluability, warpage resistance, and finish. A core board having these properties can also serve as a base for the application of plastic laminates. The point of maximum operating efficiency is a plant having 24-hour capacity of at least 50,000 sq. ft. of 3/4 inch board.

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