Device Description : the device measures the number of folds until the Usage : determines the folding resistance of paper , according to the Louis schopper principle .
Definition : In paper testing, folding endurance is defined as the logarithm (to the base of ten) of the number of double folds that are required to make a test piece break under standardized conditions: F = log10 d, where F is the folding endurance and d the number of double folds. Folding endurance is especially applicable for papers used for maps, bank notes, archival documents, etc.
Standardization : ISO 5626 , TAPPI 423 , ISO 5626
Specifications:
| Working units | Two separately working folding units for quick tests |
| Testing | 0.25 mm thickness of paper |
| Specimen width | 15 mm |
| Specimen length | 98 mm |
| Clamping length | 90 mm |
| Stretching force | Max 9.81 N and Min 7.55 N |
| Folding Roll Diameter | 6 mm |
| Distance between folding rolls | 0.5 mm |
| Working speed | 120 strokes/minute |
| Deflection on either side | 10 mm |
| Power supply | 220 v , 1-phase , 50 Hz |
| Sample preparation | Precision test strip cutter for cutting width of dimensions 15 x 100 mm provided |
| Display | Touch Panel Control with PLC
Display of Folding head Temperature and number of folds , displayed in touch panel |
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