1. Look at the color, the whiter the appearance of the warning tape, the less impurities of the warning tape, so as to ensure the normal adhesiveness, and the warning tape below 100 meters has a certain transparency to see the paper tube (except for the color warning tape). Color warning tape to see if there are irregular white spots on the surface of the tape, and the imprints that cannot be erased by hand are impurities or glue, and this product generally has an odor.
2. Smell the taste, if the taste is very strong, there is a sour smell, the retention of this warning tape is very poor, especially in the low temperature environment, the basic sticking on the carton will crack, the stronger the taste, the initial adhesion is still very sticky, but soon the glue surface will be dry, lose the glue, at that time it will be manifested in the tape surface cracks, because of the uneven glue relationship.
3. Looking at the brightness of the film, the general inferior warning tape is dark in color, and the probability of breaking this warning tape is very high and the strength is poor.
4. The thickness of the hand feel film, the warning tape that feels the film is hard is generally inferior, and due to the thickness of the film, the actual number of meters will be reduced. The film used in a good warning tape is relatively soft and has good lengthiness when stretched by hand.