AbstractThis study evaluated the properties of fluting paper made with a blend of unbleached bagasse soda pulp (340 mL CSF freeness) and OCC pulp (250 to 300 mL CSF freeness) of 0:100, 10:90, 30:70, 50:50, 70:30, and 90:10 ratios by weight, respectively. Some handsheets at 120 g/m2 basis weight were made. Strength characteristics such as tear index, tensile index, air resistance, double folds, burst index, and Concora medium test (CMT) were measured according to TAPPI and ISO standards and compared to each other. Inferior handsheet properties were observed when using 100% recycled fibers. Results further showed that addition of 10 to 30% bagasse pulp to OCC pulp did not significantly enhance the sheet strength of the product compared with the control sample (100% OCC pulp). However, it was found that addition of 70% or more of virgin pulp to the OCC pulp resulted in a substantial increase in the strength properties, except for the tear index. The modification of the fibers was visually evaluated by Scanning Electron Microscope (SEM). Overall, the results showed that flexible virgin bagasse fibers can be used as a lignocellulosic fiber for making fluting paper in combination with recycled OCC fibers.