At present, there is a situation in China, although there are many manufacturers, the technology is uneven. Moreover, the technical content of the domestic tape industry is still at a very low stage, and the national fume hood does not have a clear choice. People often know the tape at a very ignorant stage. They think that the price is low and the viscosity is good. In fact, these are misunderstandings and judgments. So how do you choose the quality of the tape? In fact, the glue of the tape has two standards in use, one is the initial adhesion and the other is the retention force, which is inversely proportional. Under normal circumstances, the adhesive tape with a viscosity lower than 10 is less adhesive coating, generally only about 20 microns, such as stationery tape, the tape used for general promotion. The initial adhesive force of a normal sealing tape is between 15 and 20, and the thickness of the tape glue is generally 22-28 microns. Is the thickness that meets the standard. However, most of the tapes on the market are mixed with chiller impurities, so the thickness is increased, so as to mask the impurities, the glue is also mixed with toner, so the scotch tape appears egg yellow, light green, and the tape is generally inferior. of. How do you distinguish between colored tapes? For colored tape, it is generally more yellow and khaki. By pinching the adhesive and then pulling it open quickly, the rubber can be pulled off and the purity and transparency of the original film can be seen. You can also look at the thickness of the glue. If there is no glue to be pulled apart or pulled apart, there is a lot of impurities in the glue, and the glue has no cohesion. Second, there is too much water, and the snacks of Wuxi have been volatilized. At this time, the initial adhesion of the tape has been greatly reduced, and the feel can be distinguished. In fact, there are many ways to distinguish between good and bad tapes. As long as you pay more attention to your life, you can tell whether the tape is good or bad. First go over the water and then scrape it off with a small blade.