KFT - Flex Durability Tester

The KFT is used for simulating a creasing strain to which flexible packaging materials may be subject during machine processing or during the packaging process. This user-friendly device can easily be used for all ASTM F-392 conditions. After the stress, the KFT sample may be tested for water vapour or gas permeability using the WDDG or GDP-C. Any damage to the sample caused by mechanical stress can be collected with high reproducibility.

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Specifications
Testing Standard	Reproducible simulation of mechanical stress to determine the flex durability on films in accordance to the ASTM F392-74 standard
Specimen dimension	DIN A4 / 210 mm x 295 mm
Compressive strain (long stroke)	155 mm
Compressive strain (short stroke)	80 mm
Angle of twist (long stroke)	440° (the first 90mm during the compressive strain)
Angle of twist (short stroke)	400° (during the complete 80mm compressive strain)
Testing conditions according the ASTM F392-74 standard	Condition A: long stroke / 2700 Cycles Condition B: long stroke / 900 Cycles Condition C: long stroke / 270 Cycles Condition D: long stroke / 20 Cycles Condition E: short stroke / 20 Cycles
Additional testing conditions	long stroke / 1 up to 999999 Cycles short stroke / 1 up to 999999 Cycles
Stroke frequency	approximately 50 per minute
Dimensions	98 x 28 x 30 cm
Weight	29 kg
Storage temperature	10°C - 40°C
Operating temperature	15°C - 35°C
Relative humidity	80% maximum, not condensing
Electrical connection	100 - 240 V/50 - 60 Hz, Current maximum 1,5 A primary / 24 V DC, maximum 1,88 A secondary
Compressed air supply	5 up to 10 bar
Standard	Corresponds to ASTM-F393-93 (1988) "Standard Test Method for Flex Durability of Flexible Barrier Materials".

Accessories

Required Accessories

Grease Press
Laboratory Requirements
Main Connection (three-phase AC 398V)

Expendables and recommended spares

Grease
Fixing Clamps