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Bulk bags, also known as flexible intermediate bulk containers (FIBCs), are highly versatile products for the storage and transportation of raw materials, chemicals and agricultural produce. Custom Bulk Bags have the added advantage of being recyclable and reusable. They are tough, durable and manufactured in line with strict international standards.

This ensures world-class quality and the guarantee that our bags will surpass your expectations. Custom Bulk Bags have a minimum 5:1 safety factor and can help you to save money when moving, storing and transporting various products. We hold ISO 9001 certification and are a subsidiary of Deneb Investments, which is listed on the Johannesburg Stock Exchange (JSE). 

Finding the correct supplier for bulk bags will make all the difference, but it can be difficult to determine if you’re making the right decision. Most often, the cheapest options are the lowest quality. Here are a few things to look out for when choosing a manufacturer or supplier that can meet your needs. 

How to assess the quality of a bulk bag

What materials does your bulk bag supplier use?

Bulk bags are made from various materials and elements that help to improve usability, safety and durability. Polypropylene (PP) is one such polymer that has proven especially useful in the packaging industry. Woven PP is the most frequently used material because it is lightweight but incredibly strong and durable. 

Depending on the type of product to be stored in the bulk bag, additional materials can be added to the design of the FIBC. These include inner liners and splash-proof substances that are designed to be impermeable to liquids. It can keep liquid products in or keep moisture out of the bulk bag, which improves the longevity of the material being stored. 

Remember to look for bulk bags that are designed specifically for your needs, industry and application. Some bags are designed for a certain purpose and have different requirements when it comes to recycling, safety and materials used. This may affect the production regulations that are followed, as set out by the government or industry body.

What types of bulk bags are available?

Choose a supplier that can offer various optional extras. This removes many limitations and allows you to tailor your bulk bags to meet your specific requirements. Custom Bulk Bags offers various filling attachments, discharge attachments, inserts and design options. We are also able to print on the fabric and supply bulk bags with corporate branding. If your supplier only offers standard dimensions and finishes, then consider switching to one that can adjust its offerings to suit you.

What quality can you expect from your supplier?

For the most part, new bulk bags are high-quality and extremely durable. Many suppliers can recycle or refurbish used bulk bags. These products may be perceived as not being the best quality, however, a thorough reclamation process will ensure that every bag is inspected for its reliability, strength and cleanliness.

Each and every bulk bag is inspected to ensure that it is structurally sound and that all discharge spouts, bottoms, loops and inserts are fit for use. Diagnostics are run for reliability and safety to ensure that all operational requirements are met. Choose a supplier who will meet the quality requirements stated. 

Choose a supplier that will meet your needs and put you first. Ensure that the right materials are used to create your bulk bags and look for the optional extras that will optimise your business operations. Custom Bulk Bags is a leading manufacturer and supplier in South Africa. 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.