The term “liner paper” refers to papers made entirely of recycled paper. It is referred to as a testliner if it is manufactured in two or three plies. In terms of quality, testliner paper used in cardboard sheets can be used as both the top and bottom ply. The weight of these papers ranges from 120 to 130 g in general. Testliner paper, which is used as the top ply of a cardboard sheet, has unique technical properties. The ply above the testliner, for example, absorbs less water than the ply below it. Lower water absorption in the ply above the testliner protects the carton from absorbing moisture from the environment while maintaining printability. Higher water absorption in the lower ply is due to greater adherence to the floating paper. Furthermore, testliner paper has a higher surface resistance for high-quality printability.
| P Test Liner 125 | Max& Min | Unit | paper porpertice |
| 125±5 | g/m2 | Grammage | |
| 0.7 | Min | g/cm3 | Density |
| 7±2 | % | Moisture Content | |
| 40-70 | Min-Max | g/m2 | (Top)Cobb Sizing |
| 45-80 | Min-Max | g/m2 | (Back)Cobb Sizing |
| 2.6 | Min | kPa.m2/g | Burst Index |
| 9 | Min | Times | (CD-Folding End)Burst Index |
