抄録
Twisting property of vinyle tape is studied.
1) A vinyle tape of the same sample may be twisted smoothly when the ratio (d/a) of length (d) to breadth (a) of the tape is 7_??_4 regardless of breadth of the filn, though thickness of the film makes some differences.
2) a/b (wherea is breadth of the tape, b thickness and d length) is proved to be less related with twisting property than d/a is, but if the breadth of the tape is same, thinner the tape is, the easier it is to be twisted.
3) The effect of twisting tension on strength of a twisted vinyle tape is less significant than on strength of a twisted paper yarn, but then the ratio of elongation of twisted vinyle tape to paper yarn is promoted instead.
4) In case of a wider tape, strength of vinyle tape decreases by twisting, and then increases again by more twisting.
5) Since a vinyle tape is softer, though it is quite flat in comparison with a cellophane tape, the effect of twist on a vinyle tape is much more significant.
