1. The smell, if the smell is very strong, has a sour taste, this tape retention is very poor, especially in low temperature environment, basic stick on the carton will craze, taste when it grows in the early feel viscous force is very sticky, but will soon dry rubber surface, loss of gum, that time in the tape surface has crack.Porque el pegamento no es uniforme.
2. Look at the brightness of the film. Generally, poor quality tapes are dark in color.
3. Espesor de la mano - película de fieltro. Las cintas con película rígida son generalmente inferiores, y el número real de metros se reducirá debido al grosor de la película.La película que elige una buena cinta adhesiva es más suave, se estira con la mano y el sexo es bueno.
4. Look at the color. Generally, the whiter the appearance of the transparent tape, the less impurities in the tape, so as to ensure the normal adhesiveness.Cinta amarilla para ver si hay una distribución irregular de manchas blancas en la superficie de la cinta, con presión manual para no limpiar impurezas o impresiones adhesivas en seco, este producto generalmente tiene un olor.
5. Look at the paper tube: the choice of thick paper tube tape is generally in order to mislead consumption.Tape production began from abroad, so the tape paper tube 7.6 cm inner diameter are unified, but inferior adhesive tape on the thickness of the tube is to do, and cause this kind of situation and many consumers still have a relationship, many people think that the thicker the paper tube, the outer ring, the greater the tape is, the more fiercely a listen to is correct, it can calculate carefully?Say with 3 millimeter paper tube and 7 millimeter paper tube ratio, if two rolls of tape from the outer diameter of the paper tube to the edge of the tape pure tape thickness is 1 centimeter, we can use the mathematical formula to calculate 7 millimeter paper tube and 3 millimeter paper tube each centimeter glue thickness can more meters of tape?
6. Vea la firmeza, la cinta adhesiva en el proceso del producto semielaborado - hasta el producto terminado está utilizando la máquina de bobinado seccional, tiene cierta tensión, la tensión, la cinta tomará más fuerza, la cinta de acuerdo con la rutina debe Sea ordenado, tal cinta no tiene espacio, el grado de pegamento combinado con aire es pequeño, puede prolongar la vida útil de la cinta adhesiva y grandes reservas limitadas de la cinta adhesiva.Additional to inferior tape, because contain impurity among them, transparent tape which is cheap, so spread glue is not even, transparent tape, won & #39;t have a problem at that time after take a finished product in roll, but the time is slightly long begin to appear aperture.Además, la cinta adhesiva se enrolla sobre una superficie plana en el proceso de uso, lo cual es muy conveniente para encontrar aberturas.
