Testing Procedures of FIBCs
Cyclic testing often focuses on drops, abrasions, spills, falls, impacts and other cases where the bag needs to stand up to repeated use throughout its lifetime. Cyclic load tests also happen for FIBC bags, ensuring they won’t tear, rip or deform under different loads in different environments.
Cyclic Top lift test requires the filled bag to be hanged from its lift loops on a test rig or other lifting devices as weight is added from the top. If any of the body fabric or lift loops of the bags are damaged in this process, the bag is Consider to fail the test.
Specific tests will have a two main criteria:
- The FIBC bag must withstand the load test at a minimum required setting before a failure occurs with the setting determined by bag type and projected use.
- The FIBC bag can have no leakage of contents or breakage of the lifting devices like handles to the extent that the lifting device cannot support the load.
For 6:1 SF, Cyclic top lift requires the bags to go through 70 cycles @ 4X SWL (Safe Working Load) with a final cycle @ 6x SWL for final approval.
FIBC Drop Test
The FIBC Bag is filled with a material up to 95% of the SWL of the bag. The bag is then dropped from specific heights based on the packaging group on the most vulnerable part of the base of the bag. The bag should not lose out any material.
In the tear test, a 10 cm knife cut is given to bag at an angle of 45 degrees. The bag is filled to twice the capacity of the bag and then lifted and held in place for five minutes. For the test to be passed, the cut size should not expand more than 2.5 cm.
In the compression test, a total load of 4 times the SWL of the bag is placed on top of the bag for 6 hours. If this load causes any damage to the bag, the test is considered as failed.