When tape is quickly removed from the roll, it stretches and becomes thinner. This stretching aligns the tape molecules of the tape and allows more light to pass through, making the tape appear more transparent.
On the other hand, when the tape is peeled off slowly, it does not stretch as much, and the molecules do not align equally. This leads to light scattering, which makes the tape appear opaque or cloudy.
Unwinding the tape quickly is useful because it creates tension in the material. The tension will cause the tape to adhere tightly to the surface.
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