Wood wool
Wood wool is a mechanically produced, multifunctional wood-based material in the form of fine and up to 500 mm long, elastic, virtually dust-free, loose and natural wood wool threads which, in contrast to wood chips, are largely free of splinters. These are made from deciduous and coniferous wood that has been debarked and - depending on the use - air-dried up to 13% wood moisture.
Even before this wood-based material became widespread in Europe in the 1880s, two products were called wood wool: In 1855, the French Eduard Guichard presented his "laine de bois" (French for wood wool ) as an inexpensive substitute for shear flakes (waste products of the Tuchscherers ) for the production of wallpapers. In 1883, the surgeon Gustav Adolf Walcher (1856–1935) described the antiseptic wound dressing made from wood fibers as a sublimate wood wool dressing in his dissertation.
Manufacturing
Natural loose wood wool has been produced using wood wool machines since the 1840s in the USA and since the 1880s in Europe. These belong to the category of cutting planing machines.
In order to be able to fully utilize the biological, chemical and physical properties that differ from tree species to tree species, modern wood wool technology is nowadays looking for the best possible recipe for every purpose, ie the individual "wood wools" differ - hardly visible from the outside - due to the wood mix used and the selected dimension of the individual threads in terms of length, width and thickness.
use
Wood wool of the highest quality classes is used as filling, stuffing, cushioning, insulating, insulating and filter material in almost all branches of industry for demanding problem solutions and products, but also in animal hygiene and for packaging and transporting sensitive products and food.
If wood wool is bound and preserved with a composite such as magnesite (magnesium carbonate), it is called "wood wool panels" or, more precisely, wood wool lightweight panels . These are used as insulating material for heat and sound insulation in walls and ceilings. They are ecologically recommended as they do not contain any artificial binders or pollutants.
As early as the Middle Ages, wood wool, which was a by-product of wood processing, was used as an additive to clay (e.g. clay corrugation ) in half-timbered buildings and as a filler for mattresses.
literature
- Hanspeter Frey: Material monograph HOLZWOLLE: Data and facts. editionYlichtensteig, Lichtensteig 2011, ISBN 978-3-03302629-2 , 258 pp.
