What’s up with these flutes?

Jul 2

And why do I care?

Packaging flutes are the wavy layers of paper inside cardboard boxes, stuck between the linerboards (or walls). They help make the box stronger and more durable. Think of them like tiny shock absorbers that protect the stuff inside the box from getting smashed or damaged. The flutes create space and cushioning, making the cardboard sturdy enough to hold and protect whatever is being shipped. Different types of flutes (like A, B, C, E, and F) have different sizes and strengths, which are chosen based on what kind of protection is needed for the items inside the box. These flutes come in different sizes, with each size providing different levels of strength and protection. For example, larger flutes provide more cushioning and are typically used for heavy or fragile items, while smaller flutes make the cardboard more flexible and are used for lighter items or where space-saving is important. The different flute types are chosen based on the specific needs of the packaging, ensuring the contents are well-protected during shipping and handling.

A-Flute

Thickness: Approximately 4.7mm.
Properties: Provides excellent cushioning and compression strength.
Uses: Ideal for packaging fragile items and offering good stacking strength.

B-Blute

Thickness: Approximately 2.5mm.
Properties: Offers good surface printing and puncture resistance.
Uses: Suitable for retail packaging and canned goods.

C-Flute

Thickness: Approximately 3.6mm.
Properties: Balances cushioning and stacking strength.
Uses: Common for shipping boxes and general packaging needs.

E-Flute

Thickness: Approximately 1.5mm.
Properties: Thin and lightweight, with good surface for printing.
Uses: Often used for smaller boxes, point-of-purchase displays, and cosmetic packaging.

F-Flute

Thickness: Approximately 0.8mm.
Properties: Very thin, offering excellent print quality and flexibility.
Uses: Ideal for high-end retail packaging and smaller, detailed boxes.

Double Wall (e.g., BC-Flute)

Thickness: Combination of two flutes (e.g., B-Flute and C-Flute), offering added strength and rigidity.
Properties: Superior strength and cushioning.
Uses: Heavy-duty shipping and industrial packaging.

Triple Wall

Thickness: Combination of three flutes, providing maximum strength.
Properties: Extremely strong and durable.
Uses: Industrial use, shipping of large and heavy items.

Conclusion

Each flute type is chosen based on the specific requirements of the packaging, such as the need for cushioning, strength, print quality, or material thickness. In most cases, you will be dealing in C-Flute. Especially if you’re ordering from Uline. This should be more than sufficient, unless you’re packing something requiring additional attention. As we always say, if you are getting packaging quotes, makes sure you’re quoting apples to apples.

The Packaging Sherpa