TIMBER RECYCLING

Wood is a natural resource in short supply. Demand has increased dramatically nowadays and is expected to double in the next 50 years. Forest production is insufficient to meet existing needs, and as a result, there has been an increase in indiscriminate logging and deforestation around the world. Direct replacement, or the cultivation of ‘forest’ for timber, also has a negative impact on the ecosystem, which is being degraded.

From the above, it is obvious that the most efficient management and utilization of wood becomes imperative.

Our company is able to manage various types of waste wood, such as

    • broken and whole palette of all types
    • waste from carpentry and woodworking and wood-based industries
    • wood waste from demolition
    • furniture to be discarded

Our company has special equipment for the mechanical treatment of wood, which saves the volume of wood waste and achieves the best qualitative and quantitative further management.

The natural wood resources used for pulpwood come from coniferous trees, such as spruce, pine, fir, larch, hemlock, and deciduous trees, such as eucalyptus, aspen and birch.Depending on the intended use, the paper is also processed accordingly.

In journalistic paper (newspapers, magazines), which is produced in a way that combines functionality and economy, mainly mechanical pulp is used, as it is intended for one-time use and does not require high resistance to special conditions (humidity, extreme temperatures, mechanical stress, radiation, etc.). On the other hand, the paper used for writing is manufactured to higher specifications in terms of its resistance to time and environmental conditions and chemical pulp is used for this purpose.

Mechanical pulp is produced by the mechanical pulping and defibration of wood. The fibres are released with the highest possible yield of pulp and little loss of components (some water-soluble extractable components). The yield ranges from 90 to 98 %.

Chemical pulp is produced by chemical pulping of the fibres, i.e. a combination of wood chips and chemicals in large vessels known as digesters, where heat and chemicals break down the lignin that holds the cellulose fibres together, but without degrading them. The yield due to this process is greatly reduced, ranging from 40 to 60%. It is usually used for materials that need to have strength or in combination with mechanical pulp gives the product different characteristics. It requires a higher consumption of trees (wood) to produce the same amount of paper with chemical pulp (printing paper) than mechanical pulp. Chemical pulp makes up about 72% of the pulp produced from tree wood.

Each of these techniques has distinct advantages. For this reason, it is not uncommon for a combination of the above processes to be applied in order to produce the best possible products. In this case, the methodology and conditions for processing the pulp are similar to those of the individual processes, but the conditions are milder.

The most common paper recycling processes are:

– the pulping of the wastepaper.

– A process that combines pulping, with cleaning by chemical and mechanical methods and the densification of the pulp.

– A process which is similar to the previous one, except that after cleaning, the fibres are fractionated, compacted