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TAPPI T 580

2012 Edition, January 1, 2012

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Thickness (caliper) of towel, tissue, napkin and facial products



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Description / Abstract:

This method describes the procedure for measuring bulking thickness and variations in tissue paper and tissue products.

This test method uses a relatively low pressure 2 kPa (0.3 psi) because of the collapsible structure of tissue paper. TAPPI T 411 "Thickness (caliper) of paper, paperboard, and combined board" uses a relatively high pressure 50 kPa (7.3 psi).

An essentially identical method is described in ISO 12625-3 "Tissue paper and tissue products -- Part 3: Determination of thickness, bulking thickness and apparent bulk density."