4 Best Ways to keep your Sensitive Products protected from Moisture while using an FIBC Bulk Bag

January 23, 2023 FIBC Bags
4 Best Ways to keep your Sensitive Products protected from Moisture while using an FIBC Bulk Bag

Storing dry flowable powders like cement, granular food materials, fine chemicals & minerals in an FIBC Bulk Bag is often susceptible to environmental factors such as moisture, water, & dust.

Products such as quicklime & spent catalysts release a high amount of heat when they come in contact with the water, which can destroy the materials inside the FIBC Bulk Bag.

Hence, it is vital to protect the materials & products inside the bag to mitigate the risk of spoilage, spillage, & contamination. In extreme cases, proper protection helps in preventing a catastrophic accident & spill.

Four Ways for protecting sensitive products from moisture while handling FIBC Bulk Bags

Let us walk you through the four best ways to protect the sensitive products from moisture while using an FIBC Bag.

Using a Lined FIBC

One of the best ways to protect your sensitive products from moisture is using a Lined FIBC Bulk Bag. A Lined FIBC Bulk Bag has an internal film liner that offers exceptional protection against materials sifting & moisture intrusion.

The liners are made from different materials, such as polypropylene (PP), polyethylene, & ethylene-vinyl alcohol (EVOH). Liners are loosely inserted into the bag. They are attached with tabs or glued into the bags’ body. Liner form can be fit or tubular.

Liners can be cuffed into bags’ openings for quick filling & discharging of materials. Lined FIBC bags are an ideal option for fine chemicals, minerals, construction materials such as cement, hazardous chemicals, & food ingredients.

Using a Coated FIBC Bag

Another effective way of protecting sensitive materials from moisture is using a Coated FIBC Bag. A Coated FIBC Bag comes with an additional layer of Polypropylene (PP) Film or non-breathable fabric. This layer is usually 1.0mil or less and is laminated on the outer or inner side of the FIBC Bags Fabric. This thin PP Film layer is added before the bags are sewn.

The primary aim of the additional PP Film layer is to seal the tiny pores during the weaving process to prohibit the passage of moisture, oxygen, water, & dust. Coated FIBC bags are ideal for storing materials with particles smaller than 125 microns or 120 mesh. 

Using a Poly Cover

Polyethylene pallet covers are a productive way of protecting materials inside the FIBC Bulk Bag from moisture intrusion & exposure to the Sun.

Polyethylene pallet covers are like large trash bags that fit over an FIBC Bag or Palletized materials. Palletized materials can be FIBC Bulk Bags, boxes, or paper bags.

Polyethylene pallet covers come in various sizes, film thicknesses, & colors. Polyethylene pallet covers are secured to the pallet through a stretch film or strapping. Poly covers can also be used for printing product identification (name & logo).

Using a Shrink Poly Film Cover

A Heat Shrink Poly Film Cover looks like a standard poly cover, but it is another constructive way of protecting sensitive materials from moisture intrusion.

The heat-shrink poly film cover is designed to shrink or mold itself around the product inside the bag when the heat is applied externally. A Heat Gun can be used for Heat Shrink.

Shrink Films have robust strength & stabilize pallet loads by eliminating moisture intrusion. Shrink Poly Film Covers can be used for printing product identification (name & logo).


You can apply any of the four ways mentioned in the blog to protect materials inside the FIBC Bag from moisture intrusion.

At Bulkcorp International, we sell Coated FIBC bags, Lined FIBC Bags, provide corrugated slip sheets, poly covers, & shrink film poly covers to give our clients options to choose from to provide an additional layer to the bags from intrusion from external factors.

Contact us if you have any questions about protecting materials inside FIBC Bags from external factors.

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