EVALUATION OF YIELD OF RAW MATERIAL IN THE PRODUCTIVE PROCESS OF CLEAR BLOCKS PIECES

ABSTRACT

Wood sector is characterized by a great source of waste generation. This way, the effective control of the productive activities is an essential condition for any company to compete in the market. The objective of the study was to evaluate the yield of raw material in percentage and financial terms of a clear blocks industry, in order to define the best variables for supplier, size and edger. The method involved the selection of variables of interest, edgers (up-down and down-up cuts), size (67 mm and 92 mm) and supplier (internal and external); the determination of the total percent yield and quality grade through the material balance and the financial means of the cost of raw materials, production costs and selling price. The analysis was performed by multifactorial analysis of variance and Tukey’s test. The yield of raw materials in percentage terms found in the study demonstrated the superiority of the size 92 mm front and 67 mm, because of the increased use of parts. Concerning to the supplier, it was observed a better performance of the sternum against internal due to the quality of the wood, however, in financial terms, this situation was reversed due to the lower cost of raw material for domestic supplier. To the form of processing in the edger, unverified statistical difference between the two court systems.

Keywords:
wood improvement; suppliers of raw material; planermills and edgers