20 Terms
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Paper production
Paper manufacturing and production terms.
Industry: Manufacturing
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Paper production
Grain long
Printing & publishing; Paper
Term used to designate that the grain of the paper is parallel to the longest measurement of a sheet of paper. The fibres are aligned parallel to the length of the sheet.
Lip
Printing & publishing; Paper
The allowance for overlap of one-half of the open side edge of a folded section, needed for sewn and saddlestitch binding, for feeding the sections; also called lap.
Relative humidity (RH)
Printing & publishing; Paper
The amount of water vapour present in the atmosphere expressed as a percentage of the maximum that could be present at the same temperature.
Grammage
Printing & publishing; Paper
The basis weight of paper stated in metric terms of grammes per square metre and expressed as g/m2. Thus a sheet of paper 17 x 22 with a basis weight of 20 lbs. For 500 sheets would be expressed ...
With the grain
Printing & publishing; Paper
Parallel to the direction in which the paper fibres lie.
Laid wires
Printing & publishing; Paper
Parallel wires in a dandy roll that produce the laid watermark and run in the cross grain direction.
Size press
Printing & publishing; Paper
Part of the paper machine, near the end, where sizing agents are added.
