Cobb Absorbency Testers
The instrument is designed according to GB/T1540-1989 (Cobb paper and cardboard absorbency method). The standard is used to test the absorbency of paper and cardboard, but not applied to valuate the writing performance of paper and cardboard.
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INTRODUCTION: Water absorptiveness (Cobb value) is the mass of water absorbed in a specific time by a 1 sq. meter sample of paper, board or corrugated under conditions specified in standards such...