二. Corrugated Board 4 . Fiberboard Grades : Weight ; Thickness ; Material Grammage: the mass in grams per square meter. Basis weight: the weight in pounds per 1,000 square feet ( abbreviated lb/MSF). The most commonly used corrugating medium weights Grammage/g Basis Weight/b 127 26 147 30 161 33 195 40 Meterial : • Linerboard - natural kraft ;Solid bleached white kraft ; Mottled white ; Oyserboard Linerboard with a whiter surface provide better graphics. • Recycled or secondary fiber -producing both two components Recycled board -smoother surface finish ;low CoF; excellent printing surface.二. Corrugated Board 4 . Fiberboard Grades : Weight ; Thickness ; Material Grammage: the mass in grams per square meter. Basis weight: the weight in pounds per 1,000 square feet ( abbreviated lb/MSF). The most commonly used corrugating medium weights Grammage/g Basis Weight/b 127 26 147 30 161 33 195 40 Meterial : • Linerboard - natural kraft ;Solid bleached white kraft ; Mottled white ; Oyserboard Linerboard with a whiter surface provide better graphics. • Recycled or secondary fiber -producing both two components Recycled board -smoother surface finish ;low CoF; excellent printing surface