There are many types of tapes, and there are many kinds of adhesives on the surface. Therefore, the performance and strength of tapes of various brands are different, so the following factors should be considered when purchasing tapes:
The microporosity of the adhesive to be adhered: due to the adhesive action of the adhesive tape, the moisture of the adhesive on the surface of the adhesive tape penetrates into the adhesive after the adhesive of the adhesive tape, and is quickly dried to make the adhesive tape become a part of the adhesive. Therefore, the microporosity of the surface of the desired adhesive is very important for the selection of the adhesive tape. If the microporous property of the device is large, the moisture absorption force of the product is large, and the adhesive tape must be quickly condensed, and vice versa. Or tape containing more adhesive.
Adhesive tape on the surface of the tape: The adhesive tape is applied to the base tape in the manufacturer. Usually, it is fully dried and then finished into a roll. If the adhesive tape is too moist, the tape itself will be tightly bonded together, which is difficult to open when used. Some can't be used at all.
Choice of distinction
Ordinary sealing and packing tape (BOPP biaxially oriented polypropylene) in daily life is an indispensable daily necessities in any enterprise, company or personal life. However, compared with the current situation in China, there are many manufacturers, but the technology is uneven. . Moreover, the technical content of the domestic tape industry is still at a very low stage, and the country does not have a clear choice. People often know the tape is in a very ignorant stage. They think that the price is low and the viscosity is good. In fact, these are wrong understandings 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. The two are 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, tape for general promotion bundle. The initial adhesive strength of normal sealing tape is between 15-20. The thickness of this tape glue is generally 22-28 microns. Is the thickness that meets the standard. However, most of the tape on the market is mixed with impurities, so the thickness is increased, so as to mask the impurities, the glue is also mixed with toner, so the transparent tape will appear egg yellow and light green, and the tape is generally inferior.
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 pulled apart or pulled apart, there is a lot of impurities in the glue, and the glue has no cohesion. Second, the water is too much and has evaporated. At this time, the initial adhesion of the tape has dropped drastically, 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.