Some Ways To Distinguish The Quality Of Cardboard Paper
1. The best way is to weigh. Weight is a hurdle that paper can't be faked, and it is also the most fundamental.
2, the surface gloss, because the cowhide is rough paper, the production process on the surface of the gloss is not high, but the requirements are flat, this can be seen in the core paper, which is also the core paper can only do the middle wave and septum The reason is that it is rough, and the glue is strong.
3, hardness and thickness, this is also an important parameter of paper, high hardness is not necessarily thick, thick is not necessarily high hardness.
4, feel, this is the experience, usually more contact with cardboard, you can train a pair of "carton hand", this point can only touch more, more poke, more pinch.