Containerboard paper are mainly used in the construction of packaging boxes. These boxes are are form from a flat board. A flat board consists of 3 layers of paper, 5 layers or even 7 layers of paper depending on the usage of the cartons.
The picture reveals the number of board type and it fluting sizes ranging from A, B, C, and E. The differences in each type of fluting is indicated by the take up ratio ie length of fluting paper (Corrugating Medium) before corrugation and that of the liner (Testliners, Kraftliners and Krafttop Liners) or flutes per unit length. The following are the indication of take up ratio by flute type and its height
A Flute - 1.50-1.54 (take up ratio) and flute height of 0.467cm
B Flute - 1.30-1.32 (take up ratio) and flute height of 0.246cm
C Flute - 1.43-1.45 (take up ratio) and flute height of 0.361cm
E Flute - 1.27-1.30 (take up ratio) and flute height of 0.157cm
They can be used in combinations as show in the picture above.
The types of flute used determine the stacking strength required. The higher the take up ratio the higher the stacking strength. Thus, A flute boxes will have a higher stacking strength.
The used of lower take up factor like B-Flute are mainly for small boxes or can cases which the can itself already provide the stacking strength.
No comments:
Post a Comment