In order to obtain the influence of the friction between a tobacco shreds' sample and its container wall on the determination of filling capacity, we have constructed a novel device capable of measuring both the friction index (
FI) and the filling capacity (
FC) of tobacco shreds simultaneously. With the device, the relationship among the “
FI” or the “
FC” and the levels of four factors were studied experimentally. The factors chosen were the variety of tobacco (Flue-cured V
1 and Domestic V
2 as typical ones in Japan), the leaf position on a stalk (
p), the length of shreds (
S) and the moisture content of tobacco (
w). The results obtained were as follows:
(1) When the “
w” increased, the value of “
FI” increased, and the “
FI” of “V
2” was greater than that of “V
1”. As compared with these variations of “
FI” with “
w”, the variation of “
FI” with “
p” or “
S” was still small.
(2) The coefficient of variation of “
FC” increased, if there was a friction, at every level of any of factors of“
p”, “
S” and “
w” for both “V
1” and “V
2”.
(3) The bias of “
FC” caused by the friction changed diversely depending upon the level of every factor of “
p”, “
S” and “
w”, as well as upon the variety of “V
1” or “V
2”.
(4) In conclusion. the “
FC” should be measured under the state without any friction between tobacco shreds and its container.
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