For the test of folding endurance paper, plastic and other similar material the sample clamp between stationery and moveable Jaw the load on the strip adjusted by a spring tension, the movable jaw rotate in both direction at an angle of 1350, until the specimen break the maximum reading of folds register in the digital counter as a number of double folds.

One complete oscillation of the test piece, during which it is folded first back wards and then forwards about the same line and this oscillation is double fold. A test piece is fastened vertically between two clamps. The upper clamp folds, the test piece by means of the reciprocating circular motion while the lower clamp maintain it under a given load.

A spring loaded clamping jaw constrained to move without rotation in a direction perpendicular to the axis of rotations of the specified folding head and having its clamping surface in the plane of this axis. The load is applied by a precision attached to the jaw assembly which is easily adjustable to provide any desired tension on the specimen.

Technical data

Folding Angle:   135º

Folding Speed:   Rotary oscillating motion of

                          175 ±25 mm C/m

Head Jaws:         Standard 0.25 – 0.50 mm

                          Various head jaw 0-0.25, 0.25-0.50, 0.50-

                           0.75, 0.75-1.02, 1.02-1.25 mm

Clamping force:   Adjustable by way of spring attached to

                           the jaw assembly from 500-1500 gf.

Dimensions of Test Strip:15 X 140 mm

Applicable Standard:ISO 5626, Tappi T 511, ASTM 2176

Options

Test Strip Cutter for specimen .