Clark stiffness tester (motorized type) No.2047

Paper stiffness is one of essential characteristics. Newspaper and printing paper must have a stiffness enabling proper handling. This machine measures the stiffness of papers, fibers and films. Typical specimens are papers of small basis weight such as newspaper and thin paper. Stiffness is determined from the flexing load of the specimen. The length of specimen portion extending from the rolls is measured, when the deflection angle of the specimen from one side to the other becomes 90 degrees. Based on this length (critical length), Clark stiffness is obtained.

Spesification

Specimen width	15 to 50 mm (typically 30 mm)
Specimen rotating speed	1 rpm
Scale	30 to 300 mm
Referential standards:	JIS P-8143-1996, TAPPI T451cm-84
Power source	single-phase 100/110 VAC 50/60 Hz 0.5A
Outer dimensions	225x320x260 mm
Instrument weight	8 Kg