The "tape" of transparent tape is originally transparent, because the tape is made of BOPP (biaxially oriented polypropylene), PP is polypropylene, we use a lot of tableware is PP material, and tape is the same chemical material.
Packing tape will lose its transparent nature after sticking to something else, and become white in water for a long time because the adhesive tape adsorbs water and some impurities in the water, the surface no longer uniform, and no longer flat and smooth, light will be scattered and refracted when penetrating it.This is the same reason as the waves and foam appear white.
Packing tape soaked water is not distilled water, which more or less with all kinds of microorganisms and tiny particles, these particles are adsorbed by the tape is the reason why the tape becomes white.
Post time: Dec-27-2022