Caliper (thickness): Caliper is the thickness of a sheet of paper or board, usually in microns. It matters for stiffness and for how board runs through carton machines.
In more detail
Two boards of the same GSM can have different calipers; a bulkier board feels stiffer.
Why it matters
Carton machines and dies are set to a thickness range; inconsistent caliper causes poor creasing and jams.
How it is measured or specified
Measured with a micrometer at several points.
Questions
What is Caliper?
Caliper is the thickness of a sheet of paper or board, usually in microns. It matters for stiffness and for how board runs through carton machines.
Why does Caliper matter to buyers?
Carton machines and dies are set to a thickness range; inconsistent caliper causes poor creasing and jams.
Why does Caliper matter?
Carton machines and dies are set to a thickness range; inconsistent caliper causes poor creasing and jams.
Explain Caliper in more detail.
Two boards of the same GSM can have different calipers; a bulkier board feels stiffer.
How is Caliper measured or specified?
Measured with a micrometer at several points.
What is GSM?
GSM is the weight of one square metre of paper or board in grams. It is the basic measure of how heavy, and roughly how strong and costly, a grade is.
What is Duplex board?
Duplex board is a multi-layer recycled board with a lighter top layer that takes print, used mainly for folding cartons.
What does Bollant Industries make?
Recycled paper and board, industrial paper products such as cores and cones, corrugated and printed packaging, paper tableware, areca and sal leaf tableware, inks, adhesives and laminating films, and a small home and professional care range.