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Content archived on 2024-04-30

Efficient and waste reducing production of conic cross beams applicable for load bearing elements

Objective



The objective of the project is the construction of a machine to produce conic cross beams, which resemble solid wood, but are made of four conic pieces of waste wood. The pieces are glued together with an adhesive which does not contain formaldehyde. Before the glueing under pressure the pieces have to be cut up and sorted. The existing parallel cross beam production is not satisfying, due to a long lasting drying out process and the extensive use of manpower (e.g. the sorting of the pieces is still done by hand). Furthermore, parallel cross beams cannot be used for load bearing elements due to unavoidable cuts of the runs of their fibres in the production process. The development of a new and economic technology to produce conic cross beams, cross beams made of four conic pieces of waste timber, wants to innovate in:
- the cutting up of conic pieces,
- the automatic sorting,
- the glueing of conic pieces,
- the decrease of the drying out time. The hole in the middle of the conic cross beam does not affect the stability, on the contrary, the conic cross beam is very stable because the run of the fibres is preserved. Moisture fluctuations do not cause any surface cracking, so it will be welcome in the construction sector. Therefore production of any length should be possible. The incorporation of this new technology to produce conic cross beams implies:
- an increase in efficiency of the production by about 30 to 40 % (drastic reduction of the processing, compared with the production of parallel cross beams),
- a higher quality product, with an improved environmental performance (decrease of waste wood by about 15 %),
- a better exploitation of timber, causing a decrease of the necessity of afforestation,
- an application for load bearing and non-bearing wood structures. A competitive leverage will be achieved for the sawmill sector, which is traditional on a low technological level. Because usable in many areas of Europe, the social benefits will be high, especially if considering that woodlands are often structural underdeveloped regions.

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Coordinator

Georg Reschreiter Sägewerk
EU contribution
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Address
30,Gseng
5442 Russbach
Austria

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Total cost

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