1.
Qualification for kraft paper
Basis
Weight (g/m2)
means the weight of the paper is gram per 1 square
meter. The basis weight value is very important for
trading the paper. In the case of paper roll, the
more basis weight, the length of paper roll will be
reduced.
Thickness
(mm.)
means the thickness of the paper is millimeter. The
thickness value results in the length of paper roll,
also the strength of packaging.
Moisture
(%)
means the weight of the water in the test paper is
calculated by the ratio of original weight in the
test paper which use the percentage is measuring.
Ring
crush
Means the ability that the paper resist the ring crush the unit is kgf per six inches or N/152 mm
Concora
crush
Means the ability that the corrugated paper resist the concora crush the unit is kgf or N
Water absorption
Means the time that the paper use to absorb the water the unit is second
Bursting
strength
Means the ability that the paper resist the bursting strength on the test paper the rate will continually increase until the paper tear out the unit is kgf/cm2 or Kpa
Cobb value
Means 1000 grams of water that the paper will absorb in the area of 1 square metre within the specific time the unit is g/m2 |
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