Model 79-56 is a user-friendly microprocessor controlled instrument to determine the bending resistance of paper, paperboard, plastic film, medical tubing, and wire. Bending stiffness is a characteristic associated with the rigidity of a material. This property is related to the modulus of elasticity of the material’s stiffness. Our Bending Tester was originally developed to produce a more concise, consistent measurement for the paper industry. This property is now used in a variety of industries including personal products, paper, flexible films, packaging and non-wovens.
The two-point method secures the specimen into a pneumatic clamp and bends the sample up to 90° against a force transducer.
What makes the Bending Resistance instrument so unique is its versatility and accuracy. Bending forces are measured at selectable bending angles from 5.0 to 90°. The instrument is available with a 100 or 1000 gram precision load cell. The advanced data acquisition system senses forces down to 0.5g. Materials can range from 5 to 50mm in length, up to 2.5mm thick.
Features
- Direct sample to load cell contact for accurate measurement
- Easy selection of test parameters from a comprehensive range through a setup menu
- Motorized test length setting
- Pneumatic clamps with fast release provide consistent clamping pressures for fast, repeatable results
- Large, clear display showing peak value and angle
- Load cells are fitted with overload protection
- Direct data output via RS-232 to printer or optional GraphMaster™ analysis software
- Calculates Taber Stiffness, Youngs Modulus, Gurley Stiffness units.
- Can be directly calibrated to traceable national standards
Benefits
- Very flexible for performing different types of tests and for different standards.
- Pre-certified weights and sample cutter options
- Ability to add special formulas to meet unique bending stiffness requirements
- Competitive advantages for accuracy and usability
- Motorized testing and pneumatic clamping eliminates operator influence
Specifications
- Choice of 10N or 1000mN load cell
- Min. force sensitivity: 0.5mN with 1000mN load cell
- Selectable bending angle 5.0-90° and test length 5-50mm
- Meets ISO 2493, AS/NZ 1301-4535, BS 3748, DIN 53121, SCAN P29, TAPPI T556
- RS232 serial data output, printer output and analogy signal output
- Can be directly calibrated to traceable National standards
Instrument Size
| Depth: | 330 mm (13 in.) | ||
| Height: | 180 mm (7 in.) | ||
| Width: | 330 mm (13 in.) | ||
| Weight | 15 kg (33 lb) |
Connections
| Electrical: | Specify voltage requirements when ordering | ||
| Air: | (instrument quality) 400-600 kPa700 kPa (90 psi) max. supply pressure |
Included Accessories
- Clear plastic table for dead weight calibration
Optional Accessories
- Certified dead weight set to meet ISO requirements
- Sample Cutter
- Printer
Applications
paper, flexible films, packaging and non-wovens.
DATA SHEET
RDM TEST BROCHURE
MEDESEAL BROCHURE