First: Identification of high temperature red high temperature masking tape can be smelled with the nose, with the eyes to see the appearance, but also to light it on fire, to see the residue after burning the properties. Can also be tested under high temperature conditions, more than 260 degrees of high temperature to see if there is not residual glue shrinkage and other conditions.

Second, the pair of sticky pinch then quickly pull apart, you can pull one side of the glue out of the way, you can 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 is pulled apart or dotted pull apart, this glue in a large number of impurities, the glue has no cohesion.

Third, too much water, has evaporated, at this time, this tape initial adhesive force has dropped very much, the feel to be able to distinguish. The color of the whole roll of good tape is not much different from the color of a pull apart, because the good tape has an extremely strong masking, there is no color overlap.

Fourth, look at the surface of the tape, the tape just after the slitting into the finished product are bubbles, placed a week after the bubbles will basically dissipate, pure tincture glue tape surface is smooth, without any white spots, mixed with impurities in the tape has a lot of irregular distribution of white spots, with hand pressure does not disperse, is not the same as the bubbles.

Five, the choice of tape must look at the width of the high temperature masking tape tape and the thickness of the tape, the regular enterprise production of tape paper tube are used in the higher density of the paper tube, the cut surface without paper chips, and the thickness of the paper tube below 100 meters of tape is 3 mm, more than 100 meters is 4-5 mm.

Six, do not feel the viscosity by hand alone, because the adulterated quality of the tape in the absence of evaporation of the initial adhesive force is very high, to use the tape to paste the object and then quickly pull away to see the holding power, repeatedly paste several times and then touch by hand, it is obvious that the feeling of fickle decline.