Common Uses for Big Bag liners

Posted on 26 October 2022

We’ve said it before: a Bulk Bag is only as good as its liner. The two are an inseparable combination if you want to successfully protect, transport and in some cases even improve your product, when increasing shelf life.

So, let’s look at some ways liners are put to work in Big Bags.

What are Big Bag liners?

FIBC liners are essentially a second layer of protection that goes inside the big bag. Big bag liners are made from a variety of materials, each of which has its own unique properties that make it better suited for certain applications.

Check out or full Big Bag Liner Guide

What are FIBC liners made of?

We make our liners in different variations of PE, combined with EVOH, PA and ALU.

The type of liner you choose depends on what needs to be transported, because different products react differently, have a different consistency or get in touch with different conditions. Here are some of the most commonly used materials and what they're good for.

  • CONDUCTIVE LINERS: These are made from carbon-loaded polyethylene, which provides an easy way for static to escape. This will reduce the risk of explosions when working with dry food products such as flour or starch.
  • ALUMINUM LINERS: When a product needs a totally leak-proof bag, aluminum liners are employed.
  • ANTI-STATIC DISSIPATIVE LINERS: Dissipative Big Bag liners are perfect for circumstances where static control is key and can be utilized in cleanrooms and research labs
  • OPP METALIZED LINERS: Metalized oriented polypropylene (OPP) is an ultra-high barrier liner that provides products with maximum protection against oxygen and moisture damage, and aid in shelf life extension.
  • EVOH LINERS: These liners have multiple layers constructed of a variety of materials to keep oxygen out and create leak-proof bags. This has led to the widespread use of these liners in the food sector and for products with a strong smell.

How FIBC liners are used

Big Bag liners are an extra level of customization for the product they are transporting. The liner is picked based on the risks and challenges the product faces during storage and transport, and its own properties. The most common uses of big bag liners are:

  • Providing protection against chemicals
  • Preventing oxygen from entering and leaving the bag
  • Providing a moisture barrier
  • Reducing static electricity

If you need to transport a product that is corrosive or toxic, you will need to use a chemical-resistant liner. Chemical-resistant liners are made of materials like fluoropolymers, which are resistant to a wide range of chemicals. These liners will keep your product from leaking and contamination.

When it comes to Modified Atmosphere Packaging, one of the most important functions of big bag liners is to act as an oxygen barrier. This means that they prevent oxygen from getting into the bag and spoiling the contents.  

Safety first: find out how to seal your bag and liners properly

Another important function of big bag liners is to act as a moisture barrier. This means that they prevent moisture from getting into the bag and causing the contents to spoil. 

Finally, big bag liners also help to reduce static electricity. Static electricity can build up inside a big bag liner and cause the contents to spoil. 

Why Use FIBC Liners?

The main reason to use FIBC liners is to protect your product from contamination. That might mean protecting it from oxygen, moisture, chemicals, or even static electricity. In some cases, it might even mean all of the above! No matter what your particular needs are, there's a liner out there that can help. Reach out to our team to find the right liner for your product.

Customize your Big Bag even more: read on about coated and uncoated bags

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