Wood fibre is used to manufacture Medium Density Fibreboard.
Particleboard uses wood reduced to flakes or similar particles of varying size and shape depending on its application. Boards required for veneering or laminating with a decorative overlay are manufactured to have a dense stable surface made from finely ground particles with high resin content. When higher strength is required, flakes which are relatively large and thin are used.
Particleboard and MDF are formed in a "dry process" using thermosetting synthetic resins as binders which play a key role in the stability of the board and its resistance to moisture. Paraffin wax is added to provide water repellency and other chemicals such as insecticides, fungicides and fire-retardants can also be added to provide specific protection.
For Particleboard and MDF (dry process panels), glued particles are formed into mat which is pressed at high temperature to consolidate the particles and cure the resin. Hot pressing can use single or multi-opening presses or a continuous process using one of several proprietary systems. The hot boards are further conditioned to equilibrate board moisture content, complete the resin cure, and to improve board stability.
Particleboard and MDF are sanded on both faces to provide a close thickness tolerance with the required surface quality. All boards are sawn to stock sizes or to suit special orders.
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