1. Dane Marčeta, Faculty of Forestry, University of Banja Luka,
Republic of Srpska, Bosnia and Herzegovina
2. Anđela Jokić, Polytechnic High School,
Republic of Srpska, Bosnia and Herzegovina
3. Vladimir Petković, Faculty of Forestry, University of Banja Luka,
Republic of Srpska, Bosnia and Herzegovina
4. Gordana Globočki-Lakić, University of Banja Luka, Faculty of mechanical engineering,
Republic of Srpska, Bosnia and Herzegovina
This paper analyzes the quantitative and qualitative recovery of pedunculate oak (Quercus robur) logs processed in the modern sawmilling facility of "Drvoprodex" d.o.o. in Srbac, Bosnia and Herzegovina. The research was conducted through a combination of direct measurements during two operational shifts, encompassing 185 logs and company-maintained production records. Logs were classified into three quality grades, with detailed analysis of dimensions and produced assortments, including lamellae (grades A–C), rustic-grade elements (R class), and friezes. The overall recovery from debarked log volume reached approximately 30%, aligning with the lower end of typical industry expectations for oak flooring production. Friezes dominated in quantity (2,376 pcs), particularly in 70 mm width, while lamellae and R-class elements showed optimal yields at 135 mm and 215 mm widths. Regression analysis confirmed a statistically significant positive influence of log diameter on both recovery rate and daily processing volume. While advanced equipment such as a band saw headrig, CNC optimizer, and multi-blade rip saws are employed, several older machines occasionally limit throughput, underscoring the need for further modernization. Importantly, about 70% of the log volume remains as sawmill residue, including slabs, edgings, sawdust, and bark. Recommendations are made for systematic valorization of these co-products.
Ključne reči :
Tematska oblast:
SIMPOZIJUM D - Ekološki održivi materijali
Datum:
29.06.2025.
Contemporary Materials 2025 - Savremeni Materijali
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