In previous posts we have discussed reducing shipping costs and the benefits of replacing or eliminating pallets.

In this week's post let's discuss all of the ways that the cost of bulk bag packaging can be reduced.

1. Reduce bulk bag size.  Reducing the height of a bulk bag by 10% decreases its price by roughly 5%.  Maximum densification, for example using the cone table densification system, can almost always decrease bag height by 10% - sometimes by as much as 40% or more.
2. Eliminate baffles.  If your bulk bags have internal baffles and they are being used to enhance stability, it is highly likely you can eliminate them by using a densification system designed for maximum results.  Getting rid of baffles can save as much as $5 per bag.
3. Use coated bulk bags.  If you use liners in your bulk bags you may be able to eliminate them and use coated bulk bags instead.  See the blog post "Bulk Bag Liners - When To Use Them... or Not!" for an excellent review on when to use liners and when not to.  Switching from a liner to a coated bulk bag can save as much as $2 -$3 per bag.
4. Replace wooden pallets with plastic channels.  Using plastic pallet replacement channels can reduce direct packaging cost and logistics related costs too.  See the blog post "Eliminate Wood Pallets - Ship Bulk Bags Without Wood Pallets" for details.
5. Eliminate wooden pallets.  Properly designed and filled bulk bags can be handled only by using their lifting loops thereby eliminating pallets - and their cost - completely.  See the blog post "Pallet Free Bulk Bag Handling" for details.

As you can see from there are numerous ways to significantly reduce the cost of your bulk bag packaging.

How can bulk bag users reduce shipping costs?

The bulk density of your product determines the opportunity for shipping cost savings.

If your product is heavy enough to weigh-out a shipping container/trailer then, as we have seen in the last two posts, replacing wood pallets with a plastic channel replacement system or simply eliminating bottom support altogether can significantly reduce shipping costs.  Reducing the weight of packaging per shipment means you can replace the weight reduction with product thereby shipping out more product per container and reducing shipping cost per pound.

However, if your product's bulk density is such that you can't weigh-out a container/trailer there is an additional step you can take to minimize shipping cost.

Bulk Bag Densification Increases Payload

Light products such as wood flour, fluff carbon black, fumed silica and the like react favorably to certain types of densification.  This means that the payload of a given size bulk bag can be increased.  Increasing the bulk bag payload increases the amount of product that be shipped per container thereby reducing shipping cost per pound.

Low bulk density bulk solids tend to trap air between their particles. Depending on the particle shape it can be very difficult to remove the air while the bulk bag is being filled. Bulk bag filler densification systems are designed to remove the trapped air thereby densifying the product.

Some densification systems are more effective than others. Carefully matching the method of densification with the product characteristics can result in a significant improvement in packed bulk density thereby increasing payload.

Bulk Bag Densification Reduces Shipping Cost

As a starting point it is reasonable to assume that a densification system capable of maximum compaction should be able to increase payload weight by a minimum of 10%.

Control and Metering's experience is that payload increases of 20-30% are often achievable and in some cases as much as 40%+ more weight can put in a bulk bag that has been previously filled without densification or with ineffective densification systems.

Wikipedia describes ISPM 15 as the:

"International Phytosanitary Measure developed by the IPPC that directly addresses the need to treat wood materials of a thickness greater than 6mm, used to ship products between countries.  It affects all wood packaging material (pallets, crates, dunnage, etc) requiring that they be treated with heat or fumigated with methyl bromide and marked, often branded, with a seal of compliance. "

Wood Pallet Cost Rising

As a result, the total cost of wood pallet usage has escalated dramatically.  Not only has the cost of ISPM 15 compliant pallets increased, shipping documentation preparation and possible border crossing delays consume additional time and resources. 

That coupled with historic problems related to mold growth, damage to shipped product from pallet defects (splinters, nails, etc.) and the outright refusal of some countries and/or customers to accept wood pallets has caused a strong desire to find a wood pallet alternative.

Bulk Bag Solution

If you ship your product in bulk bags there are two solutions that Control and Metering can recommend:

1. Plastic pallet replacement channels.
2. Shipping bulk bags without any kind of pallet-like support.

Plastic Pallet Replacement Channels

We have had extensive experience with BagPal channels.  These are designed to slip into sleeves attached to the bottom of specially made bulk bags allowing the bulk bag to be handled by a forklift just like a bulk bag on a wooden pallet.

BagPal channels are robust, compare favorably price-wise with treated wood pallets and can be reused and recycled.

Also, they provide a traditional means of moving bulk bags with a forklift - any forklift with standard tines can be used to move a BagPal equipped bulk bag.

Plus, a pair of BagPal channels weighs less and is much smaller than a wood pallet.  These features provide two significant financial benefits:

1. Reduce shipping costs by increasing your bulk bag payload by the difference in weight between a pallet and the channels - roughly 30+ lb. Higher payload per bag equals more product in a truck or container.
2. Increase warehouse efficiency by using MUCH less space to store empty channels vs. empty pallets.

Bulk Bags Minus Bottom Support

Bulk bags can be shipped without bottom handling support of any kind.  This has been done in a number of industries for both domestic and export delivery to customers.

Without bottom handling support bulk bags must be lifted using their loops.  Preventing damage and contamination of the bag bottom is also required.

Specially designed bulk bags with unique lifting loops and protective bottom panel barriers solve these issues. 

Shipping bulk bags without bottom handling support is a topic by itself and will be the topic of next week's blog post.