Name: -Hardboard
Sources: -Hardboards are a cheaper option than plywood where strength is not required.
Hardboard is made from wood fibre is extracted from chips and pulped wood waste. In the
production process the pulp is exploded under pressure. Heat and steam is applies to leave
a fine, fluffy brown fibres. These fibres are transformed into mats, which are held
together with lignum and other glues. The mats are than pressed between steam-heated metal
plates to give grainless sheets with one smooth, glossy surface and one textured surface.
To prevent warping, moisture is added in a humidification chamber.
Disadvantages: -Hardboard cannot be used outside because it absorbs water.
Advantages: -There are three basic types of hardboard are available - standard, medium
and oil-tempered. Oil tempered boards are impregnated with oil making them stiffer, harder
and more resistant to scratches and moisture. A number of specially hardboards are
available for specific purposes. These have either embossed, perforated, plastic-faced or
veneer surfaces.
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