Well and high quality control of ncr paper,competi

Generallyspeaking,therearethreekindsofcarbonlesspaperqualityinourfactory,named:GradeA-woodpulppaper,GradeB-mixpulppaper,GradeC-recycledpaper.generaldiscriptionasfollows: 1.Recycledcarbonlesspaperinsheets. 2.Wonderfulcoloration. 3.Goodsurfacesmoothness. 4.CB/CFB/CF:whiteortintled. Itemname NCR paper Model 787*1092mm No. Inspectionitems Unit Standardrequired TestData 1 Quantitate CB g/m2 49.0±7.0% 48.4gsm CFB 51.0±8.0% 52.5gsm CF 49.0±7.0% 50.7gsm 2 compactness CB g/cm3 ≥0.67 0.71 CFB 0.73 CF 0.72 3 Brightness % ≥75.0 99.4 4 Opacity % ≥60.0 86.6 5 Smoothness/CF SurfaceRoughnessofprinting/CFB μm ≤7.00 4.73 SurfaceRoughnessofprinting/CF 4.97 6 Ph/CF CFB / 6.0 9.0 7.9 CF 7.8 7 Maximumwarpage CB mm ≤15 3.0 CFB 2.0 CF 2.5 8 CrockingE CFB / ≤5.0/nocleardevelopingdot 2.10/qualified CF 1.96/qualified 9 Developingsensitivity CFB % ≥80.0 98.9 CF 92.8 10 lateralexpansion CB % ≤3.0 2.2 CFB 2.8 CF 2.7