What are the main applications of paper cardboard

1, the degree of sizing (water resistance): paper card board surface to prevent the penetration of ink when the performance of the spread of writing paper is very important. Dip the pen with a special ink, draw the paper on the paper, to non-proliferation and impermeable lines of the maximum width (mm) said.

2, smoothness: in a certain degree of vacuum, a certain volume of air through a certain pressure in the sample surface and the gap between the glass surface of the time required in seconds.

3, the surface strength: paper card plate offset printing paper to prevent the paper off the paste version, requiring a better paper surface strength. The number of wax sticks that press the paper to pull the fiber to the wax bar can also be measured by the printing applicator. Drawing paper, tracing paper is measured its resistance to friction, are on the surface of the paper tissue bonding strength detection.