https://www.groundworksandplanthire.co.uk/best-dumpy-bags-cornwall/ are a popular packaging solution for large levels of product such as aggregates and waste. They will have many names such as, Tonne bags, Dumpy bags, FIBC's, Builders bags
The range of sizes and specifications of Bulk bags are vast and each kind will suit a different use. The specifications may also be quite detailed and technical which can sometimes ensure it is difficult to determine what type will be needed for the required use.
When deciding on the proper type of FIBC, the following points should be considered;
- Physical properties or chemical properties of the intended product to go inside the bulk bag, such as:
? Required volume
? Weight of product to be contained
? Bulk density
? Contents flow characteristics
? Degree of aeration
? Particle shape and size
? Fill temperature
? Whether food grade is necessary
- The filling, handling, transporting, storing and emptying ways of the FIBC.
See below for a complete rundown of terms because of this popular packaging solution and their meaning. This will help to make informed decisions about the kind of bag needed.
Terminology Information
Class of IBC = Single trip, standard duty reusable or durable reusable.
Safe working load (SWL) = this can be a capacity of the bag and relates to the utmost weight or level of product that the bulk bag can hold safely. It'll usually be shown in kilograms and ranges from 250kg - 2000kg
Size = This can usually be shown in external dimensions and in centimetres.
Safety factor = Standard tonne bags will have a safety factor of 5:1, meaning a 1000kg capacity bag is guaranteed not to break, rip or tear with a weight of less than 5000kg. A safety factor of 6:1, is really a bulk bag crafted from thicker woven polypropylene body fabric and tested to an increased standard and is generally a durable or multi trip FIBC.
Filling and discharging features
Plain base - This is a Standard flat base on the bottom of the bulk bag that makes it cuboid in shape. All standard builders bags will come with an ordinary base.
Lifting loops - Strong loops sewn into each corner of the bag which allows it to be picked up and manoeuvred by a fork lift truck. All FIBCs will come with 4 lifting loops.
Filling inlet - There are two types of filling inlets. They're;
Filling spout - An extended tube which allows the contents to flow into the bag easily
Skirt top - Additional fabric at the top of the bag that can be secured around the filling device to avoid any lack of contents, ensuring that all the contents flow easily in to the IBC.
Baffles = Additional internal baffles are sewn onto the corners of the bulk bag. This can help to stabilise the bag and ensure it is more rigid and so are specifically used for unstable or fluid products.
Discharge spout = A tube crafted from woven polypropylene fabric is sewn onto underneath of the bulk bag. This provides a less strenuous flow of the contents out the bag when held over a hopper and the contents discharged.
Food grade = Food grade manufacturing pertains to the conditions where the FIBC has been manufactured and stored in before delivery to customer. These conditions derive from strict standards which allow the bag to be ideal for use for foodstuffs. Food grade bulk bags usually include an internal polythene lamination.
There are two main forms of food grade conditions;
Clean room = The manufacturing/storage facilities are free of loose threads, dirt and dust. Usually more suited to bird seed and animal feed
BRC compliant food grade bulk bags = manufactured and stored in stringent conditions that meet up with the BRC standards. This ensures the meals grade fibc is suitable to package food ingredients without the risk of being contaminated.
Liners - An interior polythene liner provides added protection for the contents inside. Liner can either be:
? Inserted loosely or tabbed
? Cuffed, where the liner is inserted and the very best section roll outrageous of the bag to create it more secure.
? Tabbed, liner is stitched in place at the corners to make sure stability in the bag.