2-слойная Самокопирующая бумаги

Test Report OfGuanhao Brand Carbonless Paper ItemsUnitStandard(Grade A)Test ResultTest MethodCBCFBCFBasisWeight/GrammageCBg/m245±6.0%45——GB/T451.2CFBg/m252±7.0%—50.3—GB/T451.2CFg/m247±6.0%——46.8GB/T451.2Tightnessg/cm3≥0.670.760.820.89GB/T451.3Brightness%≥75.086.286.583.4GB/T7974Opacity%≥65.069.282.276.8GB/T1543Smoothness(CF surface)S≥35—7485GB/T456PH Value(CF surface)—6.0 9.0—7.37.1GB/T13528Warp Maximummm≤5444GB/T16797 Appendix AImage Sensitivity%E≥80.0—96.699.8GB/T16797 Appendix CBlueprint Image Density—E≥40.0—66.069.0GB/T16797 Appendix CLight Resistance(Retention rate)%E≥40.0—71.480.1GB/T16797 Appendix C