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TAPPI T 543 Stiffness (Gurley)

Standard:

TAPPI

Method:

TAPPI T 543

Title:

Bending resistance of paper (Gurley-type tester)

Scope

The TAPPI T 543 Stiffness test determines the bending resistance of paper, paperboard, and other materials by measuring the force required to bend a specimen under controlled conditions. The instrument described allows for a wide variation in specimen length and width, and in applied force. This procedure is not recommended for soft or limp materials such as tissue, toweling and newsprint, or for materials with a pronounced degree of curl.

Significance

The bending resistance of paper affects many converting operations and most end-uses. The bending resistance of paperboard is basic to most of the uses to which this material is put. It is necessary to have a convenient, reproducible test method to measure this fundamental characteristic.

 

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