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Bulk bags are an effective and efficient way to transport and store various goods. They are used in a variety of industries, including mining, agriculture, construction and chemicals. These durable, lightweight and reusable polypropylene containers are flexible and cost-effective. Custom Bulk Bags also come with a minimum 5:1 safety factor, guaranteed.

Once you’ve decided that bulk bags are the correct way forward, how many bulk bags should you order for your needs? This decision comes down to a couple of factors, including the type of bulk bag you’ll need to use, as well as the type of material you want to store or transport.

bulk bags placed on one another

Type of bulk bag can affect quantity

Custom Bulk Bags are available in a variety of dimensions and capacities. Obviously, the larger the bag, the more volume and the more material it can hold. However, some bags can flex more than others and this natural ability to bulge means that they can hold more produce. Before ordering your bulk bags, speak to us to find out what type of bag will best suit your needs.

We can offer bulk bags with various optional extras, such as sturdy interior panels, inner linings, optional splash-proofing and with a variety of tops and closures. These products also come in a variety of sizes and weight restrictions; from half a cubic metre up to two cubic metres and from 500kg up to two tonnes. The options are plentiful so we can guide you to the perfect choice for your requirements.

Type of materials can determine the number of bulk bags needed

Naturally, the type of material or product that you want to store and transport will affect how much of it can fit inside the bulk bag. Large-grain materials, such as mining ore, building rubble and agricultural produce, will take up more space for a smaller volume. Small-grain materials, such as sand, cement, fertilizer and sugar will fill a bulk bag with a higher weight to volume ratio.

This means that you will need more bulk bags if storing and transporting large-grain materials. When working with small-grain materials, consider under-filling the bulk bags for better safety and to prevent spillage while in transit. You will need to work out the estimated volume of materials that you need to store or move, and then find the appropriate bulk bag in terms of volume and load capacity.

From there, you will be able to calculate the quantity of bulk bags needed. The beauty of these products is that they are reusable and can be reconditioned – Custom Bulk Bags can restore the containers to their original condition on behalf of customers. Buying bulk bags is a smart investment due to their safety, reliability and reusability. For more information about our bulk bags, please contact us today. 


Custom Bulk Bags is a 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 3 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 for our latest news and industry insights.