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5:1 vs. 6:1 – Which Safety Factor of FIBC Bags is Better for Multi-Uses?

February 11, 2025 FIBC Bags
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5:1 vs. 6:1 – Which Safety Factor of FIBC Bags is Better for Multi-Uses?
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FIBC bags play a critical role in businesses that require the secure dealing with, capacity, and transportation of bulk materials. When selecting an FIBC bag for your business needs, understanding the security factor is pivotal. The two common safety factor ratings for FIBC bags are 5:1 and 6:1, which show their quality and strength. But which one is safer for multiple uses? In this article, we’ll investigate the contrasts between 5:1 and 6:1 FIBC bags, their appropriateness for diverse applications, and how to choose the proper one for your business.

Understanding the Safety Factor in FIBC Bags

The safety factor (SF) of an FIBC bag refers to the proportion of the bag’s rated safe working load (SWL) to its tested breaking quality. This rating ensures that FIBC sacks meet strict industry standards for quality and durability. The safety factor is a key measure of how much weight a bag can handle under ordinary operating conditions.

For example:

  • A 5:1 safety factor implies that the bag is tested to hold five times its safe working load before failure.
  • A 6:1 safety factor implies that the bag is tested to hold six times its safe working load before failure.

The higher the safety factor, the stronger and more durable the bag. But does that mean a 6:1 FIBC bag is always the superior choice? Let’s break it down further.

5:1 Safety Factor FIBC Bags – Single Trip Bags

5:1 FIBC bags are designed for single-use applications and are regularly referred to as Single Trip Packs (STP). They are widely used across multiple industries for transporting dry, flowable materials such as:

  • Grains and seeds
  • Sand and gravel
  • Chemical powders
  • Construction materials

These bags are made with solidness in intellect, but they are not aiming for reuse. Whereas they can handle a stack five times their appraised capacity, they are frequently arranged of or reused after one utilization to dodge any chance of failure. 

Advantages of 5:1 FIBC Bags

  • Cost-effective for businesses requiring single-use packaging
  • Lightweight, making them simple to transport and handle
  • Perfect for industries where cleanliness and contamination prevention are priorities
  • Readily accessible and produced in bulk

Disadvantages of 5:1 FIBC Bags

  • Not reasonable for multiple uses
  • Cannot handle extraordinary conditions
  • Risk of fabric degradation if uncovered to UV rays or dampness for long periods

6:1 Safety Factor FIBC Bags – Multi-Trip Bags

On the other hand, 6:1 FIBC bags are classified as Multi-Trip Bags, meaning they are designed for repeated use under particular conditions. These bags undergo stricter quality control measures and are developed with fortified fabric and sewing to withstand different filling, lifting, and discharge cycles.

Common industries that prefer 6:1 FIBC bags include:

  • Agriculture – storing and transporting grains, seeds, and animal feed
  • Mining – carrying heavy materials like ores and minerals
  • Construction – moving sand, cement, and aggregates

To ensure safe reuse, 6:1 FIBC bags must meet the Australian standard AS3668-1989 for reusability. They must also be properly assessed and reconditioned before each use.

Advantages of 6:1 FIBC Bags

  • More durable and safe to wear and tear
  • Eco-friendly and cost-saving since they can be reused multiple times
  • Better suited for industries that require frequent bulk handling
  • Reinforced sewing and fabric give added security for transporting hazardous or high-value materials

Disadvantages of 6:1 FIBC Bags

  • Higher initial cost compared to 5:1 bags
  • Require proper handling, assessment, and capacity for safe reuse
  • Not suitable for contaminant-sensitive industries where hygiene is a concern

Key Differences Between 5:1 and 6:1 FIBC Bags

Feature 5:1 FIBC Bags (Single Trip) 6:1 FIBC Bags (Multi-Trip)
Intended Use Single-use Multiple-use
Durability Standard High
Strength Rated 5 times SWL Rated 6 times SWL
Cost Lower Higher
Reusability No Yes
Industry Use Construction, Chemicals Mining, Heavy Industries, Agriculture

Choosing the Right FIBC Bag for Your Business Needs

The decision between 5:1 and 6:1 FIBC bags depends on your specific business necessities. Here are many factors to consider when selecting the right bulk bag:

  1. Type of Fabric Being Handled: In case you wish for a disposable solution for dry goods, 5:1 FIBC bags are a cost-effective choice. However, if your materials require numerous handling cycles, a 6:1 bag is the superior investment.
  2. Budget Limitations: If your priority is cost-effectiveness, 5:1 bags offer a conservative choice. But in case you need long-term savings through numerous uses, 6:1 bags provide better value.
  3. Industry Regulations & Measures: Some businesses, such as pharmaceuticals or food production, may require single-use bags for contamination control, making 5:1 bags the only viable option.
  4. Natural Considerations: Businesses focusing on sustainability should choose reusable 6:1 bags to reduce waste and promote eco-friendly practices.
  5. Safety Requirements: If your materials are hazardous or require extra solidness, a 6:1 bag offers improved quality and unwavering quality.

Best Practices for Handling & Reusing FIBC Bags

If you select to use 6:1 safety factor FIBC bags, follow these best practices to ensure safety and life span:

  • Assess bags before reuse – Check for wear, tears, or weakened lifting loops.
  • Clean bags properly – Ensure no contamination from past use.
  • Store in a dry place – Protect bags from UV exposure, moisture, and harsh weather.
  • Follow producer guidelines – Adhere to recommended weight limits and handling methods.
  • Utilize the right lifting equipment – Avoid excessive strain on the bag’s fabric and loops.

Conclusion: Which FIBC Bag Safety Factor is Safer for Multi-Use?

Both 5:1 and 6:1 FIBC bags serve essential parts in industrial applications, but 6:1 bags are the more secure alternative for different uses. Their higher solidness, reinforced structure, and compliance with multi-trip standards make them the preferred choice for businesses looking to reuse bulk bags productively.

However, if your operation requires single-use bags for cleanliness or cost reasons, 5:1 FIBC bags stay a reliable arrangement. The key to making the proper choice is evaluating your industry necessities, budget, and supportability goals.

For high-quality FIBC bags that meet rigid security and industry measures, select Wales Industries. Our range of bulk bags is planned for sturdiness, quality, and capability. Contact us today to discover the culminated FIBC solution for your trade! 

Get in touch with Wales Industries for top-quality FIBC bags today!

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Highly recommended.

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