FOR CHEMICAL PPE MATERIALS
The material is rubbed with an abrasive (sand paper) disc with a pre-set downward pressure (9kPa) and the material is leak-tightness tested after a number of abrasion (rubbing) cycles. Performance ranges from Class 1 (>10 cycles) to Class 6 (>2 000 cycles).
The material sample is formed into a tube and fixed into a jig, it is then lightly compressed causing it to flex and then straightened. After a number of flexing cycles the sample is then leak tightness tested. Results are averaged for samples in the weft and warp orientation of the fabric (which are at 90 degrees to each other). Performance ranges from Class 1 (leak tight after >500 flex cycles) to Class 6 (leak tight after >50 000 flex cycles)
The method for this test is exactly the same as the one above, but conducted at -30°C. Performance ranges from Class 1 (leak tight after >100 flex cycles) to Class 6 (leak tight after >4 000 flex cycles)
The material sample is slit and placed in a tensometer which pulls on each side of the material. The material is pre-tensioned to 2N and is then pulled (torn) apart and the peak pulling force recorded. Performance ranges from Class 1 (>10N) to Class 6 (>150N).
A material sample is punctured with a ‘standard’ spike and the peak force during the test is recorded. Performance ranges from Class 1 (>5N) to Class 6 (>250N).
The material sample is placed in a tensometer which pulls on each side of the material. The material is then pulled until it breaks and the peak pulling force during the test is recorded. Results are averaged for samples in the weft and warp orientation of the fabric (which are at 90 degrees to each other). Performance ranges from Class 1 (>30N) to Class 6 (>1 000N).
The material sample is placed edge on to a flame that is 50mm from the fabric for 5 seconds. To pass the test the material should not form droplets and must self extinguish within 5 seconds from removal from the flame.
For resistance to flame the material must pass the resistance to ignition test, but samples are then exposed to flame and then leak-tightness tested. Performance ranges from Class 1 (leak tight after passing through the flame) to Class 3 (leak tight after exposure to the flame for 5 seconds).
The material sample is placed in a tensometer with the seam at 90 degree to the direction of pull. The sample is then pulled until it breaks (either the fabric or seam) and the peak pulling force during the test is recorded. (which are at 90 degrees to each other). Performance ranges from Class 1 (>30N) to Class 6 (>500N).
Enquiry Submitted Successfully
