Thickness swelling
TS value at 24 h water-soak that shown in Figures 4 TS were not affected by
strand orientation. All average values ranged from 26.0 to 41.9 %. For RD type, the TS
value is greater than other types because the differential swelling potential due to inplane
density variation and abnormal thickness strands in this experiment lead to over
compression stress released in the pressing operation.
The results showed that rubberwood OSB bonded with 5 % pMDI resin did not
pass the JIS requirement of 20 %.