UN Bags
UN approved Big Bags for your packaging dangerous goods
Background
The UN issued recommendations on the transportation of dangerous goods. These define how strong an Big Bag for dangerous goods must be and set the standards how it has to be tested. The most European countries agreed to the European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR) which adopts the UN Recommendations on the Transport of Dangerous Goods.
UN bag types
We supply UN bags for dangerous materials in various specifications. Compared to standard FIBC, UN big bags are extra strong constructed in order to prevent leakage of the dangerous materials even when the big bag is in a stressed situation. Every UN bag design is tested by an independent test house. The ADR certificates will be handed over to buyers.
|
Offered by DIV Trades |
max. Volume |
UN-Symbol |
Packing Group |
Degree of Danger |
|
no (not possible for FIBC) |
1.5m3 |
X |
I |
high |
|
yes |
3.0 m3 |
Y |
II |
medium |
|
yes |
3.0 m3 |
Z |
III |
low |
Do I need an UN bag for dangerous goods?
This depends on your goods and country legislation. An indication may give the list of the UN. download pdf
Construction
UN bags can be divided into four major types, which we can supply to you:
- 13H1 uncoated fabric and without inliner
- 13H2 coated fabric and without inliner
- 13H3 uncoated fabric and with inliner
- 13H4 coated fabric and with inliner
UN bags have some limitations regarding their design.
Size
UN bags must not be higher than twice the shortest side. They cannot have a larger volume than 3.0m3
Inlet
The big bag cannot have an open top or a simple flap closure.
UN bags are not repairable and can be used only one time.
Marking UN Bags
UN sign and code
Every UN bag design has a unique UN number that provides important information
Additionally UN FIBC must be marked with a stacking load pictogram
Optionally on UN Bags can be printed ADR signs like:
How UN bags are tested:
Top lift test
The big bag is loaded with six times its maximum gross mass and kept under this weight for 5 minutes. The big bag must not have any damage from this.
Stacking test
The big bag is loaded to its maximum allowable gross weight. Than 1.8 times the maximum stacking weight is loaded on top of the test bag for 24 hours. The big bag passes the test if there is no deterioration of the body or loss of content.
Drop test
The big bag is loaded with its maximum permissible gross mass and dropped from a) 1.2m if packaging group II and b) 0.8m if packaging group III. The UN bag shall not have loss of content.
Tear test
A 10cm hole is cut with a knife into a fully loaded UN bag. Then the double of the maximum gross load is applied to the UN bag for 5 minutes. The UN big bag is then lifted for 5 minutes. The UN bag passes if the hole does not increase by more than 25%.
Topple test
The UN bag is toppled from a) 1.2m height if packaging group II and b) 0.8m height if packaging group III. The bag shall not have loss of material.
Righting test
The UN bag is fully filled with its maximum permissible weight. The UN bag lying on its side is then lifted with a speed of 0.1m/s to upright position. The bag shall not have damage from this.
FILLING AND DISCHARGING OPTIONS
