Folding Angle	material yield bending Angle is 135±1°
Folding speed	standard bending speed is 175±5 times /min
Spring tension	4.91~ 14.72N, add 9.81N force, spring compression at least 17mm.
Standard chuck	monomial high width standard clamp with sample parallel bit.
Folding chuck	the change of tension caused by rotation eccentricity is no more than 0.343N.
Folding head width	19±1mm
Folding radius	0.38±0.02mm
Clamping method of the lower fixture	cylindrical knurled knob, more convenient force clamping
Fold mouth gap distance	0.25 mm / 0.5 mm / 0.75 mm / 1.00 mm
Man-machine interface	5.0in touch color screen control, real-time display of test data
Printout	modular integrated thermal printer
Working environment	temperature (0~35) ℃, humidity < 85%
Overall dimension	300*300*450mm
Weight	35 kg

ISO 5626, determination of folding resistance of paper GB 2679.5 determination of folding resistance of paper and board