First, smell. PVC electrical tape factory prompt you: qualified tape the regular manufacturers is no odor. If you purchase the tape, found a sour taste, must not buy. Because the tape holding force is very poor, especially in the low temperature environment, the tape is very easy to crack, will soon lose the sex, the tape must be inferior products.
Secondly, look at the film brightness, touching film thickness. Generally speaking, the color of the product than the inferior adhesive tape and a lot of qualified dark, touch up, tape generally inferior will be relatively hard, and because the film is thick, the actual number of meters will be reduced. Good film tape are relatively soft, good tensile properties. So, the adhesive tape film brightness and thickness are two very important, must be careful to observe.
Third, look at the color tape. In general, the appearance of the color white transparent tape, adhesive tape and less impurities, in order to ensure the normal adhesive tape products, one hundred meters have a certain degree of transparency can see paper tube. But the inferior tape is usually yellow, white surface with irregular distribution, a pressing hand would have wiped away the impurities or glue dry blotting. There is no doubt that the production process of inferior tape is certainly very rough, so the color will be yellow tape, there is also the surface impurity
Three aspects of this is the PVC tape factory to remind you should pay attention to the choice of adhesive tape products