Bulk Bags FAQs

Your Questions About Bulk Bags Answered

Here at Centurion Packaging we often get quizzed about our range of bulk bags, which is why we have put together this post answering all of your burning questions in one place.

Can Bulk Bags Be Reused?

Yes, bulk bags can be reused, which requires a multi-trip bulk bags made with a 6:1 Safety Factor. This type of bag is manufactured to be used for a specific amount of times with some users choosing to reuse bulk bags with a 5:1 safety factor.
Centurion Packaging does not recommend this practice, as you will need to take into account that bags may be worn and have a small hole in the fabric which could make the loops unstable.
We would not guarantee a certain number of uses for a 6:1 safety factor multi-trip bulk bag. You will need to inspect in between uses and retiring bags for any tears, rips and abrasions. An additional bag tag is included for tracking usage if the bulk bag is approved for further use after inspection.

Can You Recycle Bulk Bags?

Yes, new bulk bags from Centurion Packaging are made from 100% virgin polypropylene.

What are the Different Parts of FIBC/Bulk Bags?

Top
Inlets and Openings
Body
Webbing or Lift Loops
Bottom
Outlets or Discharge Spouts
Ties, Clips, and Buckles
Other Specialty Parts

What is the best way to determine what size bulk bag I need?

The size of the bulk bag you require depends on the products you have plus the method of transport and the machinery you are using and your storage method. If you are unsure which size you will need, do not hesitate to give Centurion Packaging a call and we can help you figure it out.

How Are Bulk Bags Emptied?

Bulk bags are usually emptied using a spout that is attached to the bottom of the bag, which is also known as a discharge spout. Typically the discharge spout is tucked inside a closure on the bottom of the bag which is designed to protect the spout and prevents the product from sifting out of the discharge before its intended discharge. Talk to Centurion Packaging about having a discharge spout and closure designed for your specific needs.

Can Bulk Bags Be Stored Outside?

Bulk bags can be stored outside but they will degrade as a result of UV exposure. Standard bulk bags have a UV inhibitor added into their fabric at the manufacturing level, which aims to resist UV rays for approximately 2 months. UV rays can, however, vary in strength and degree depending on where you are based in the world.

Can You Print onto Bulk Bags?

Bulk bags can be printed on, usually on the side panels of the bag. Print colours are typically one, two or three colours, but speak to us if require specific colours to match your branding. Please note, this will affect the cost of your bags.

What is a Full Open Bottom?

A full open bottom bag will have a flap that covers the entire bottom. Once this flap is untied, the bulk bag can be discharged fast through the open bottom which allows the ability to release the product from the bottom of the bag without reaching underneath. This type of bulk bag is ideal for material that tends to cake or bridge when discharging.

What is a UV Inhibitor?

UV inhibitors are an additive that is added to the resin during the extrusion process and assists in protecting your bulk bag from the harmful effects of UV rays. Therefore, it will protect it from degrading and becoming unstable and unsafe.

Can Bulk Bags Have Liners?

Liners can be inserted loosely or attached to your bulk bag. There are a number of different types of liners for specific applications, but the main two are form-fit liners and tube liners.

What is a Fill Spout?

The standard fill spout is a spout with a 14-inch diameter opening in the centre of the bag and is typically 18 inches long. This is designed to allow the user to fill the bag, and minimise dust occurrences as the bag is being filled. The length of a standard fill spout is 18 inches long but spouts can be customised to fit your individual needs.

Is the Fabric Breathable?

Woven polypropylene is breathable. Air and water will flow through an uncoated bulk bag. We would recommend using a ventilated bulk bag for applications that need a great deal of breathability.

What is a Form-Fit Liner?

A form fit liner is designed to take the exact shape of the bulk bag and allows improved filling and complete discharging of product. Unlike a basic 'tube liner', these form-fit liners offer a flat top and bottom and incorporate a spout diameter and length which complements the FIBCs fill and discharge spouts. These spouts can also be heat sealed closed for increased sanitation and protection. Form-fit liners are available in a number of standard and co-extruded polyethylene’s which include a barrier and anti-static features. Form-fit liners can be affixed permanently to the FIBC by glueing or sewn tabs or they can be designed to be easily removed from the FIBC using ties on the tabs.

How Do You Pick up a Bulk Bag?

Bulk bags are lifted by several different lifting applications that can be specific to your needs. Examples include standard 10 lift loops, lifting sleeves, single point crane lift and stevedore straps. If there is a way to lift your bulk bag, Centurion Packaging will find a suitable pick up method for you.

What is Bulk Density?

Bulk Density is the property of the product that you are adding to your bulk bag. It is the mass of product divided by the volume it occupies. The volume includes the space between particles plus the space inside the pores of individual particles.

Can Cranes Be Used to Lifted Bulk Bags?

Cranes can be used to lift bulk bags but you must use a special lifting device or loops designed specifically for a crane lift. Follow the correct manufacturer recommendations when lifting a bulk bag.

How Do I Attach My Documents to a Bulk Bag?

Typically documents are attached by use of a document pouch which is usually a 10x12 polythylene bag that is sewn to the seam of the bulk bag. Document pouches can have a ziplock opening or a standard opening and can be sowed at the exact position you require.

Can Bulk Bags Be Lifted Over Walls and Fences?

You will need a vehicle that is parked within lifting range of the desired drop point. Where the crane will not be able to reach the desired drop point, the delivery will need to be made to the nearest point the crane can reach. We would recommend not driving on the pavement or onto property not owned by you in order to achieve this.

Got Any More Questions? Get in Touch

If you have any more questions regarding Centurion Packaging’s range of bulk bags, please do not hesitate to contact us today.

Our team of specialists have 35 years of combined experience in the industrial packaging sector, with a track record of top-quality customer service to our clients.

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