Rycolab Bending Resistance Tester
Determines Bending Resistance and Stiffness of Paper and Board
After configuring the test conditions and pressing the start button, the sample-holder moves to the pre-selected angle-position and the curve with the determined values are indicated on the large touch screen.
The test starts automatically when the load-cell is touching the sample (pre-load selectable). With the holding function, a holding time can be selected and then a second measurement can be taken. Holding times are useful for testing label-paper, when the bending resistance on wet samples should be tested.
After the test is complete, the sample holder returns to its starting position and the sample can be taken out. By means of the statistic function, the statistic values can be read (maximum, minimum, average, standard, deviation, ratio MC/CD) on the graphic display.
Related Standards: ISO 2493, SCAN P29, DIN 53121, BS 3748, TAPPI T556, NFQ
03- 048, IS 3748
Test Principles
Bending resistance in paper and board is a complex property, dependent on the network characteristics of the sheet, as well as the fundamental fibre properties. It varies with the type of paper, the fibres used, the making process, the bulk and grammage of the finished sheet.
The two main criteria are fibre dimensions and bulk. Rigidity has been found to be linearly proportional to the square root of thickness for a given grammage. Since the bulk density of a sheet is closely related to the degree of bonding and fibre strength, a change in any of the fundamental fibre properties will affect bending resistance.
| Bending stiffness | Max bending moment |
| Slop | Bending moment at 90° |
| Bending moment on relaxation | Angle at zero-moment on return movement |
| Angle at max bending moment | Bending work (area under the curve) |
| Measurement of paper and paperboard | Manual sample clamping or Pneumatic sample Clamping. Must be specified at order. |
| Test length from 0.1 to 50 mm | Test speed from 0.1 to 50º/s |
| Pre-settable bending angle (0.1 to 90 degrees) | 2 times of test and 2 points of measurement angles |
| 2 result tables with a maximum of 20 test results. One table for MD results and other for CD results | Load cell 10N- Range 0 -10000mN- Accruracy ±2% (up to 100 mN) and ±5% rest of range |
| Bending resistance, bending resistance index results | Taber Measurement Units |
| Creaseability Test : BS, Slop, B. Moment, etc | Fatigue. Strength of split, Split recovery |
| Sample template 38x80 mm included | Verification kit included (Weight + Support) |
| Large graphic touch screen | Clear acrylic security cover |
Connections:
• Electric: 110V-230V, 50-60Hz (40W)
• Air supply: Max 6 Bar (Pneumatic model).
Weight and dimensions
270 x 500 x 270mm (WxLxH)
15 kg
Contact Our Sales Team
01223 492081
sales@tendringphysicaltesting.com
