What is a big-bag and what is it used for and the most important concepts?

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BIG BAG packaging is used for storage and transport of loose substances. Thanks to the use of new technologies, the form and materials from which these packaging were made enable good cargo security and facilitate accurate space management.

BIG BAG is the collective name for various types of containers used to transport large quantities of both bulk, liquid and semi-liquid materials.

They are most often used by industry, because it is in production plants that bulk quantities of raw materials are needed. BIG BAG packaging is not only intended to protect transported materials, but also to facilitate handling.

Thanks to their regular shapes, BIG BAGS fill the loading space particularly well, which reduces transport costs and speeds it up. This type of packaging comes in many types, which differ from each other in purpose and security.

Types of BIG BAGS and their industrial applications

BIG BAG container packaging is used for storing and transporting substances with different physical form and purpose. The food industry often uses packaging that is designed to transport semi-liquid substances.

Such containers contain, for example, syrups and concentrates, sauces, honey, but also glues and pastes. This type of flexible container gives the possibility of storing up to 3000 liters of substance per one square meter. Other containers are used to transport food and plastic in granular form.

Thanks to the additional internal construction, they retain a rectangular form after filling, which allows them to fill the space exactly and facilitates unloading and loading. Importantly, these types of BIG BAGS are available with additional protection, e.g. anti-electrostatic protection, which is important in potentially explosive areas.

There are also flexible containers for the transport of hazardous materials, e.g. flammable and explosive, which are used in the pharmaceutical or chemical industry as production raw materials or are the result of the work of laboratories and factories. Thanks to the use of BIG BAGS, the transport of both semi-finished and finished food or pharmaceutical products is safe, efficient and efficient.

Key concepts:

1.1.1 Flexible collective packaging – an intermediate collective container made of flexible material, i.e. fabric, foil, plastic, paper, designed to contact the content directly or through the insert, and folded when it is empty.

1.1.2 Flexible, reusable collective packaging. Big bags designed and designed for a large number of fillings and unloadings. The tensile strength in the repair field must be as high as the original.

1.1.3. Flexible multi-use standard packaging for multiple use . Big bags designed and designed for a limited number of fillings and unloadings.

NOTE 1. Big bags in this category cannot be used if they are damaged, i.e. when they cannot be repaired.

NOTE 2. Replacing a cartridge is not considered a repair.

1.1.4 Flexible single-use packaging. Big bags designed and designed to be refilled only once. NOTE. Big bags in this category cannot be reused. In this category, neither the exchange of the insert nor the repair of the big bag is allowed

1.1.5. Big bag type Big bags of a similar design, with the same nominal transverse dimensions, produced using similar materials and construction methods (giving at least the same performance – times the use).

NOTE 1. Inside the type, the perimeter may be increased by 10% from the perimeter of the test specimen provided that the geometry does not change. If the big bag type has a discharge chimney, a smaller diameter of the chimney than the chimney of the tested sample is allowed.

NOTE 2. The presence or absence of a contribution does not change the type. 1.1.6. Safe load SWL The maximum load that a big bag can carry according to certification.

1.1.7. Safety index SF. The total quotient of the final test load in the cyclical lift test and SWL rounded down. NOTE 1 The safety indicator may be illustrated as follows (see also B.3.3.):

Example 1

  • Load capacity: 500 kg
  • Final load – cyclic test: 2400 kgf
  • Quotient: 4.8
  • Total number rounded down: 4

Example 2

  • Load capacity: 500 kg
  • Final load – cyclic test: 2600 kgf
  • Quotient: 5.2
  • Total number rounded down: 5

NOTATKA 2. The results in Example 1 show a single use big bag that did not meet the requirements of the International Standard, while Example 2 showed a single use big bag that meets the requirements.

1.1.8. Lifting tools. Integral or permanently attached lifting tools that form part of a big bag and are tested with it.

NOTE Detachable lifting tools are considered lifting tools.


1.2. Big bag items

1.2.1 Walls – a tube consisting of one or more layers, seamless or made of one or more panels joined together.

1.2.2 Base – a part of a big bag connected to or constituting an integral part of the walls, forming the base of a standing big bag.

1.2.3. Normal base – closed base

1.2.4. Opened base – flat, conical or otherwise formed base with an opening.

1.2.5 Completely open base – wall extension forming the base of the big bag after closing.

1.2.6 Top – the top of the big bag, without lifting devices, forming the top of the big bag when closed.

1.2.7 Body – walls and base of the big bag.

1.2.8 Refill – an integral or replaceable refill that fits into your big bag


1.3 Operating devices

1.3.1 Filling hole – a hole for filling the big bag

1.3.2 Filling chimney – a tube-shaped big bag element on top of it, used to fill a big bag

1.3.3. Filling slot. A slot-shaped hole on the top of the big bag for filling it.

1.3.4 Outlet – hole for emptying the big bag

1.3.5 Dump chimney – a tube-shaped big bag element for emptying the big bag

1.3.6 Closing elements. Tapes, cords, straps, which are used to close the inlet and outlet.


1.4. Handling devices

1.4.1. Supporting and lifting devices. Tapes, slings, ropes, frames or other devices formed from the extension of the big bag walls, integral or removable, used to support or lift the big bag.

1.4.2. Four-point lifting Four lifting tools used to lift a big bag at the same time.

1.4.3. Two-point lifting. Two-point lifting tools used simultaneously to lift the big bag.

1.4.4 One-point lifting. One or more lifting tools, gathered at one point, used simultaneously to lift the big bag.


1.5. Safety and security devices. Valves, ventilation tools and additional elements that protect charge, discharge and handling equipment.


1.6. Coated and laminated materials. Materials whose surface is coated or consisting of two or more layers joined together to protect the contents of the filled big bag or the environment from leaking contents.


1.7. Special treatments.

1.7.1 Stabilization – modification of big bag materials to increase resistance to weather conditions and the aging process.

Example. Addition of UV ultraviolet, absorber and antioxidant.

1.7.2. Electrostatic conductivity treatments. Treatments that modify the electrostatic behavior of the big bag

1.7.3. Insect repellents. Treatments that increase the capacity of the big bag to protect its and its contents against insects.

1.7.4. Treatments to increase flame retardancy. Treatments that make the big bag resistant to smoking.