Check back glue Velcro

by:BAILI     2020-11-12
Can use a ruler to measuring size, back glue viscosity, can be repeatedly paste, cut a small piece of testing its viscosity, at the time of tear, viscous strong will is hard to get off, good adhesive will clearly can see have a thick layer of transparent glue, like very Q. Vice is not. But if the stick on to use objects, tore back glue be careful when you do not use the back to back glue oh, because the grease, affects the viscosity of gum.
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