Suggested Board Grades for Content Weight
The quality and strength of the board lining
papers are generally determined by the weight
per square metre in Grams e.g. 125, and also
content mix of new and recycled wood fibre Kraft
paper (‘K’) being of better quality (higher
content of new wood fibre) than Test paper
(‘T’). For example: 125 K/T B would mean the
weight of the paper used is 125 grams per square
metre, the external paper being Kraft and the
internal being Test quality with ‘B’ fluting
between.