virgin Kraft

High quality Kraft Detail Description: 1.famous paper factory in China,superior quality products. 2.prompt delivery time 3.sheet and roll avalibale Specification: paper type:kraft substance:110g/m2,120g/m2,140g/m2,170g/m2,200g/m2,>220g/m2 color:brown material:100% virgin pine wood pulp place of origin:Fujian,China Usage:carton,bag,envelope,other packing width:5400mm in maximum,according to customer's request ITEMMeasurement110g/m2120g/m2140g/m2substance deviationg/m2- 7,+ 3- 7,+ 3- 10,+ 5Tightnessg/cm30.680.680.68water absorbencyg/m2(by cobb)40/8040/8040/80Anti-break strengthkPa·m2/g2.702.702.70Ring-crush strengthN·m/g6.36.36.3Anti-pucker time(9.8N)time353535Moisture%8.0±2.0Width deviationmm0——+8REMARK1.Bythe standard of GB10739-2002 2.enviroment standard based on 23±1°C,relative humidity 50±2%r.h Quality data (for 120g/m2 kraft paper,testing time:June,2010): 1.substance: 119.0g/m2 2.tightness: 0.70 g/cm3 3.surface hydroscopicity: front side 33.7g/m2 back side 46.0g/m2 4.anti-break strength: 331kPa 5.ring crush strenght(horizontal directio): 958N/m 6.anti-pucker times: 45 times