Tips for buying good bopp tape
The glue stand or fall of adhesive tape is in use have two standards, one is initial stick force, one is hold to force, both become inverse ratio.Generally, the adhesive tape with adhesive force less than 10 is less than the size of the glue coating, generally only 20 microns or so, such as stationery tape, general promotional binding with adhesive tape.The initial sticking force of normal box sealing tape is between 15 and 20, and the thickness of this tape glue is generally 22-28 microns.Is the standard thickness.But at present most of the tape on the market are mixed with impurities, so the thickness increases, to hide impurities, glue also mixed with toner, so transparent tape appeared egg yellow, light green, this kind of tape is generally incomplete.
How does colored tape differ from good to bad?On the colored tape, generally yellow and earth yellow more.Pinch the glue and spread it out quickly. Pull the glue off one side and you can see the purity and transparency of the original film.You can also look at the thickness of the glue, assuming that no glue is spread or dotted, there are many impurities in the glue, and the glue has no cohesion.Two is too much water, has evaporated, at the moment this kind of adhesive tape at the beginning of the stick force has fallen very strong, feel can be distinguished.In fact, the difference between good and bad tape still have a lot of methods, as long as more careful in life, can identify the good or bad tape.
1. Smell. If the smell is strong and has a sour smell, the tape will not hold well
2. If you look at the brightness of the film, the poor quality of the tape will become dull
3. The felt film is soft. The film selected for good adhesive tapes is soft for sowing and grinding
4. According to the color, the whiter the appearance color of the transparent tape is, the less impurities will be involved in the tape, so as to ensure the normal stickiness
5. Looking at the paper tube, the selection of thick paper tube is generally in order to mislead consumption, in fact, the inside diameter of the paper tube is 7.6cm
6. According to the tightness, the tape is all rolled by the machine, so the tighter the tape is, the better it will be