1. Smell the adhesive tape

The taste is very strong and there is a sour taste, the retention of this adhesive tape is very poor, especially in the low temperature environment, the basic stick on the carton will crack, the taste is stronger when the initial adhesion is more sticky, but it will soon be dry and lose the glue, then it is shown in the adhesive tape surface cracks, this is because of the uneven coating relationship.

2. Look at the brightness of adhesive tape film

Generally, the color of the inferior adhesive tape film will be dark, and the probability of breakage of this adhesive tape is very high and the strength is poor.

3. Feel the thickness of the adhesive tape film

The adhesive tape that feels hard is generally less, and because of the thickness of the film, the actual number of meters will be reduced. The film selected by the good adhesive tape is relatively soft, and the hand stretching is good.

4. Look at the color of the adhesive tape

Generally, the whiter the color of the transparent adhesive tape, the less impurities of the adhesive tape, in order to ensure normal adhesion, the adhesive tape below 100 meters, placed for a few days has a certain transparency can see the paper tube. Yellow adhesive tape to see whether there is an irregular distribution of white spots on the surface of the adhesive tape, with the hand press can not erase for impurities or adhesive dry imprint, this product is generally with odor.

5. Look at the paper tube of adhesive tape

The selection of thick paper tube adhesive tape is generally to mislead consumption, the production of adhesive tape started from abroad, so the inner diameter of the adhesive tape tube is a uniform 7.6 cm, but the inferior adhesive tape in the thickness of the paper tube is done enough effort, and this situation is related to many consumers, many people think that the thicker the paper tube, the larger the outer ring, It's always a mistake to roll more adhesive tape.

6. Check the tightness of the adhesive tape

Adhesive tape in the process from the semi-finished product to the finished product is divided by the machine, and there is a certain tension. If the tension is large, the adhesive tape will be rolled relatively tight, the adhesive tape should be rolled neatly according to the conventional, so that the adhesive tape has no gap, the degree of glue and air combination is small, which can extend the storage life of the adhesive tape and maximize the retention of the adhesive tape.