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A bunkie board is thin mattress support originally intended for a bunk bed. It was invented in the early 20th century to provide a thinner platform support than box-springs , and more uniform support than slats.
Bed of Queen Hetepheres I, with headrest (near end). 4th Dynasty of Egypt , circa 2575-2528 B.C. Bed is 177 cm (5ft 9in) long. The 600s (7th-century) Anglo-Saxon Trumpington bed burial held a 60cm by 155cm bed with pieces of looped wrought iron , which may have held the bed base.
Advertisement for Beaver Board, 1917. Beaverboard (also beaver board) is a fiberboard building material, formed of wood fibre compressed into sheets. It was originally a trademark [1] for a lumber product built up from the fibre of clean white spruce [2] made from 1906 until 1928 by the Beaver Manufacturing Company at their plant in Beaver Falls and marketed from their headquarters on Beaver ...
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Magnesium oxide wallboard (10 mm thickness) Magnesium oxide, more commonly called magnesia, is a mineral that when used as part of a cement mixture and cast into thin cement panels under proper curing procedures and practices can be used in residential and commercial building construction.
These boards are made of a homogeneous mixture and hence are formed as single layer for any thickness. Cement fibre boards are more used in decorative applications and can be manufactured from 1 ⁄ 8 to 13 ⁄ 16 inch (3 to 20 mm) thickness. Fibre boards are made in very thin layers, making it extremely difficult to manufacture high thickness ...
Perforated hardboard and similar systems are made of a variety of materials, each of which has different characteristics that affect the range of possible uses. Standard perforated hardboard is made of wood fibers, usually with the addition of resin , and tempered by coating with a thin layer of linseed oil and baking at a high temperature to ...
a wet process similar to pulp mills in which the fibers are softened and under heat and pressure the ligin in the fibres is used to create boards. The boards are limited to approximately 25 mm thickness; thicker boards are made by gluing (with modified starch or PVA wood glue). Additives such as latex or bitumen are added to increase water ...