3.3. Physical properties
The objective of the grammage test is to determine the weight of paper per unit area and expressed in grams per
square meter (g/m2) or called as gsm. The objective of the experiment is to get the standard basis weight of 60 gsm.
The results recorded the grammage which is 58.87 g/m2 was quite similar with the value of standard target of 60 gsm
paper grammage as shown in Table 4. Durian rinds paper shows a value of 128.59 μm for bulk thickness in Table 4.
Apparent density is one of the most significant properties of paper and influences almost all mechanical, physical,
and electrical properties [4]. Table 5 shows that durian rinds paper has compatible bulk density compared to old
carton box, old newspaper and old copier paper reported by Ibrahim [2] and Rushdan et al. [4].