For Colored Tape, it is used for marking and masking purposes, generally beige and khaki are more common. Many people think that colored tape is the color of the film, but the color is actually the color of the glue. Pinch the glue tightly and pull it apart quickly, you can tear off the glue on one side, and you can see the purity and transparency of the original film. It is important to look at the thickness of the glue. If no glue is pulled apart or pulled apart in dots, there are a lot of impurities in the glue, and the glue has no cohesion. Second, too much water has evaporated. At this time, the initial adhesion of the tape has dropped a lot, and the feel can be distinguished. Attach the yellow tape to the object, the better the concealment, the thicker the glue, the better the quality. Another important condition for distinguishing between good and bad tapes is not to feel the viscosity with your hands, because the initial adhesion of the doped tape is very high when it is not volatile, so stick the tape to the object and then quickly pull it away to see the retention. Repeatedly pasted several times, and then touched with hands, the sense of elasticity decreased significantly. Doped tapes are often dissolved in gasoline and acid when formulating the glue, so the smell is very strong. Regular large enterprises use toluene to dissolve, and are volatilized by the fan during the coating process. Having said all this, you may ask, is there a difference in the quality of the tape used? In fact, the purpose of using tape is not to stick the problem, but to stick firmly instead of separating. Most of today's doped tapes will collapse after a period of time (between 20 minutes and 1 hour) and cannot be reapplied, especially in the cooler and windier dry conditions that are more pronounced below. Again, inferior tapes are easy to break and have low strength, which is mainly related to the quality of the film.
