In general, 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. 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 tapes on the market are 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 paper, it is convenient for marking and shielding purposes, generally more beige and khaki. Tape color tape is considered by many people to be the color of the film. In fact, the color is the color of the glue. The pinch is pinched and then pulled open quickly, and the rubber of one side can be pulled out to see the purity and transparency of the original film. The most important thing is to see 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 been greatly reduced, and the hand can be distinguished. Apply yellow tape to the object. The better the shielding, the thicker the glue and the better the quality.

Under the comparison of the appearance of the tape, the glue is less, the color of the doped tape is very deep, and the tape has high transparency after being opened. The color of the good adhesive tape with the whole roll is not much different from the color after the pull-out, because the good tape has a strong shielding property, and there is no color superposition. Doped quality inferior tape should be applied to the BOPP film. Only the relatively backward direct gluing method is used. Therefore, there are often large impurity particles that are not completely dissolved, so the tape is often used. There are lines (where there is no glue).

Good tape paper adopts the method of soft enamel transfer and squeezing, and there is no line condition (the printing tape has ink leakage and less printing). Another way to distinguish is to look at the surface of the tape. The tape has bubbles just after it is cut into finished products. After a week, the bubbles will basically dissipate. The surface of the tape of pure blush glue is smooth and clean without any white spots. Tapes doped with impurities have a lot of irregularly distributed white spots, which are not dissipated by hand and are not the same as bubbles.

In summary, everyone has been able to judge the quality of the tape from the appearance of the tape. The most important condition for distinguishing the good and bad tape is not to feel the viscosity by hand, because the doped tape does not volatilize. The initial adhesion is very high, so it is necessary to stick the object with tape and then quickly pull it to see the holding force. After repeatedly applying it several times and then touching it by hand, it is obvious that the sputum is degraded. When the doped adhesive tape is used for the glue formulation, it is generally dissolved with gasoline and acid, so the smell is very large. The regular large enterprises are dissolved with toluene, and have been volatilized by the fan during the coating process.

Having said that, you may ask, is there any difference between good and bad tapes in use? In fact, the purpose of using tape is not to stick to the problem, but to stick it firmly and not to separate.

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