Hebei Yinhe Paper Co.,Ltd
Specification Sheet Of Duplex Board With Gray Back
ITEM | UNIT | INDEX | |||||
Basisweight | g/m² | 250 | 300 | 350 | 400 | 450 | |
Basisweight worp | % | +0.5,-0.3 | |||||
Transverse quantitative difference | % | 4.0 | |||||
Moisture | % | 6.0±1.5 | 7.0±1.5 | 7.5±1.5 | |||
Thickness | um | 315±10 | 370±10 | 440±15 | 500±15 | 560±20 | |
Transverse thickness difference ≦ | % | 4.0 | |||||
Surface roughness≦ | um | 2.0 | |||||
Transverse stiffness ≧ | mN.m | 3.3 | 4.8 | 7.5 | 10.0 | 13.5 | |
Foldness≧ | time | 20.0 | |||||
Water imbibition(cobb,60s)≦ | Obverse | g/m² | 45 | ||||
Reverse | 100 | ||||||
Dustness | 0.3-1.5mm² | n/m² | ≦12 | ||||
1.0-1.5mm² | 1 | ||||||
﹥1.5mm² | none | ||||||
Brightness | % | 85 | |||||
Surface glossiness≧ | % | 40 | |||||
Printing ink absorbency | % | 25±5 | |||||
Intension≧ | m/s | 1.4 | |||||
Burst | ≧kmpa/g | 1.8 | |||||
