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Bulk bags play a crucial role in various industries where the safe and efficient handling of large quantities of materials is required. These versatile bags go by many names and are used to transport, store and protect a wide range of products, including chemicals, minerals, agricultural goods and construction materials. 

Custom Bulk Bags is a leading manufacturer and supplier of these packaging products in South Africa. We produce up to 3.5 million bulk bags every year, all of which have a minimum safety factor rating of 5:1. Our products can safely hold between 500kg and two tonnes of material per bag, depending on your specifications.

A blue forklift picking up a loaded bulk bag from a large stack inside a warehouse

Different names for bulk bags

Bulk bags are known by multiple names and these terms have evolved based on their different characteristics and applications. Here are some commonly used names:

1) Bulk bag – This is a generic term that refers to large bags designed to transport and store bulk materials. It is the most common name used in the industry and the one we at Custom Bulk Bags most often use.

2) Flexible intermediate bulk container (FIBC) – This is a widely used term and is derived from the bag’s flexible nature and its intermediate capacity between small bags and large containers. We also use the term FIBC quite often when referring to our products.

3) Jumbo bag – You may have come across this synonym for bulk bags before. It emphasises their large size and capacity to handle significant quantities of materials.

4) Super Sack – Super sack is a trademarked term used to refer to FIBCs in the United States. This is a more common term for bulk bags in overseas markets, but especially in the West.

5) Bulk tote – Bulk tote is a name commonly used for FIBCs with a top fill spout and discharge spout, allowing for easy filling and discharge of the contents.

6) Big bag – Big bag is a straightforward and widely used term around the globe. In South Africa, it’s not as commonly used but it’s still self-explanatory.

7) Bulk sack – Like the name above, bulk sack is another term that needs little explanation but you may come across it in your search for bulk bags.

Why the right bulk bag dimensions are critical

Working with a renowned supplier

Custom Bulk Bags is a major manufacturer and supplier of high-quality bulk bags in South Africa. We specialise in producing UN-certified bags that meet international quality and safety standards. UN certification ensures that the bags have undergone rigorous testing for strength, durability and safety, making them suitable for transporting a diverse range of goods.

Quality control is of utmost importance to Custom Bulk Bags. We conduct comprehensive testing throughout the manufacturing process to guarantee the integrity and reliability of our products. These include topple testing, top lift testing, tensile testing, drop testing and UV-resistance testing. 

By adhering to strict quality control measures, Custom Bulk Bags ensures that customers receive products that meet their specific requirements and can withstand the most demanding conditions.

Whether industries require bulk bags for construction, mining, agriculture, or any other application, Custom Bulk Bags can provide customised packaging solutions. Our team of experts works closely with customers to understand their requirements and deliver tailored bags. We can also guide you through the ordering and specification processes to make it more efficient.

Bulk bags go by many names due to their diverse applications and characteristics. No matter what you call them, we can manufacture and supply these products in bulk. We aim to minimise lead times for South African customers. For more information about our bulk bags or to get advice on the ideal design specifications, please contact us today.


Custom Bulk Bags is a leading South African manufacturer of woven polypropylene bags for various industries, such as mining, chemicals and food. We are able to produce over 3.5-million bulk bags per year, keeping our customers in stock at all times. Our bags adhere to the highest levels of quality as a result of our stringent in-house testing and quality control programmes.

Custom Bulk Bags holds ISO 9001 certification and we currently have a number of UN-certified designs. We are a Level 2 B-BBEE manufacturer and supplier and fall under the ownership structure of Deneb Investments Limited. For more information on our products, contact Follow us on Facebook, LinkedIn and Instagram for our latest news and industry insights.