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Speedy operation for crease and stiffness tester

An IDM Instruments product story
Edited by the Engineeringtalk editorial team Feb 3, 2004

The IDM crease and stiffness tester is now more ergonomic and faster in test operation.

The IDM crease and stiffness tester is now more ergonomic and faster in test operation.

In modern high-speed packaging machines, it is very important for the creases in boards to be correct and uniform.

The value of crease stiffness is technically important in the folding of carton blanks during their erection and closure, whether this is by hand or by mechanical means.

The crease recovery (spring back) can result in forces, which distort the erected carton or cause stresses to be applied to closures, which reduce their effectiveness.

Crease recovery is determined by the decrease in resistance offered by creased board after it is folded at 90 degrees at the crease, measuring the recovery force after 15s.

Board stiffness can be determined by bending a 50mm length of board through a 15-degree angle.

The crease and stiffness tester operates from 220/240V AC at 50Hz, and has an option of an RS232 output.

BS6965 and BS3748 standards are covered, and the tester is useful mainly to the industries of cartonboard, paper and packaging.

To assist in accurate cutting of sample specimens, a crease and stiffness cutter is also available.

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