Debarking
When debarking (also peeling or baring ; Bavarian , Austrian German : Schepsen , Schäpsen , Schöpsen ), the bark and the sap-bearing layer ( cambium ) are removed from a tree trunk .
forestry
In forestry only is usually softwood bark. Debarking in the forest (forest debarking) is often done in order to avoid pest infestation. Different types of bark beetles (such as the book printer ) develop in the bark. In addition, debarking accelerates the drying out of the wood, which in turn means that various wood-breeding beetles or wood fungi no longer find a suitable habitat. Debarking is done by hand with a peeling iron , motor-manual with attachments for the chainsaw or mechanically with mobile debarking machines, often also referred to as debarking trains.
The method of removing bark from the standing trunk in order to make it die is described in the article " Ringing ".
Timber industry
The bark usually disrupts the following production processes in the processing industry. Either it hinders further processing (sawing industry) or it cannot be used (e.g. in paper manufacture). That is why almost all larger factories in the wood industry have debarking machines (factory debarking).
Debarking bonsai
When designing bonsai , the exposed wood ( core or sapwood ) is processed with a sulfur- based bleach . It protects the exposed part of the wood from fungal and rot attack . The whole bark must never be removed, otherwise the tree will die.
These dead wood parts can be worked on almost indefinitely, whether with chisels , milling machines or other tools, and make the tree appear very old. In this way, natural events such as a snow break or storm damage can be reproduced, which then give the tree a certain maturity or experience. Especially trees whose natural location is in the middle and high mountains are subjected to such interventions. For example, pines and other conifers that can be found up to the natural tree line should be mentioned here. For deciduous trees such as elegant maples or birches , less gnarled shapes are preferred.
See also
literature
- Franz Kollmann: Technology of wood and wood-based materials. Volume 2, wood protection, 2nd edition, Springer Verlag, Berlin / Heidelberg 1955.
- Werner Müller: Veneers, panels. Basic training, specialist book publisher, 1967.
- Carl Wilhelm Ernst Putsche: General encyclopedia of the entire land and housekeeping of the Germans. Eighth volume, Baumgärtner's bookstore, Leipzig 1829, p. 239 ff.
Web links
- Rumble without bark (accessed July 26, 2018)
- Device for debarking logs (accessed July 26, 2018)