Ind

Abstract

Th e r es u l t of t h e s u itability s tu dy of two wood s p e ci es a s ra w materia l for venee r and plywood ar e r epo r ted. The wood raw material u sed ru bber wood (Hevea brasiliensis) and sengon (Paraserianthes falcataria). The wood u sed were obtained from diffe r ent age classes i.e.10 and 20 years for ru bber wood and 10 a n d 1 5 years for sengon. The study co n sisted of log pee l i n g characteris t ic, veneer pr ope r ties and some p h ysica l -mecha n ical properties of plywood (triplex and multiplex). All of t h e logs from t wo wood species could b e peeled in cold condition, producing 1,5 mm ve n ee r at a cutting angle between 89 o 30'-9 1 o 30'. The average shrinkage of veneer is 4 .51 % and the average v eneer swel l ing fro m oven-dry to ai r dry is 3. 30 %. The bond i ng strengt h of plywood from all wood species conform with the I ndonesian standard, German standar d and Japanese standa r d fo r type 11 or water resistant. The spesific gravity and mechanical properties of plywood from the older tree tends higher t h an t hat from t he yo u nger t ree.