Corrugated Products

Corrugated products are at the “Kor” of Korpack. With many options available in all shapes and sizes, we offer a cost-effective solution for all your packaging needs. Corrugated boxes are perfect for a wide range of industries and products. It should come as no surprise that corrugated boxes are among our most popular packaging products.

We have an immense stock of corrugated shipping containers ready whenever you need them with 1-2-day lead time.

Our corrugated products include:

  • Stock boxes
  • Custom corrugated boxes
  • Bin boxes
  • Die cut boxes
  • Gaylord boxes
  • Single to Triple wall boxes
  • Point of purchase displays
  • Corrugated partitions and trays
  • Sheets, pads and rollups
  • Printed corrugated boxes
  • Bookfolds

Still, not all corrugated products are created equal. Likewise, corrugated boxes come in many varieties, which will greatly impact their strength (scroll down to learn more!) Korpack will work with you to ensure your box has the proper strength to handle the shipping environment.

When choosing your corrugated packaging supplies, we’re here to consult with you to determine the best option. Based on research and experience, the Korpack team will guide you in the decision-making process so that you get the corrugated products that best suit your needs and offer the best value.


How Are Corrugated Products Made?

Corrugated products are made from corrugated board. This board is made by using two materials, a corrugating medium and the liner board. The corrugating medium is placed between two liner boards. Double and triple wall containers are made for heavier and/or fragile products. This is accomplished by adding an additional medium and liner per wall. For example, a double wall container has three liners and two mediums, a triple wall has four liners and three mediums.

Aren’t Corrugated Boxes Just Cardboard Boxes?

No! Corrugated boxes are not cardboard boxes. Cardboard simply refers to a heavy card stock. And does not have the same structural integrity that corrugated does. While paperboard is great for many applications, it’s not built to handle the shipping environment.

Corrugated boxes are heavily reinforced and designed to withstand abuse, such as being jolted around in a shipping truck.

What do the Different Flute Profiles Mean?

Flute profiles refer to the thickness of the walls of the corrugated box or product. The thicker the wall, the stronger the box and the more cushion it will provide. Let’s look at the most common flutes in the packaging industry today:

  • A flute – has 1/4″ (5mm) thick walls, providing ample cushion and stacking strength.
  • B flute – has 1/8” (3.2 mm) thick walls. Good for self-supporting products (i.e. cans) and popular for die-cut designs.
  • C flute – has 5/32” (4 mm) thick walls. A great all-around and the most popular flute style used.
  • E flute – has 1/16” (1.6 mm) thick walls, commonly used in retail packaging. Providers excellent image clarity.
  • F flute – has 1/32” (0.8 mm) thick walls, does not offer level of cushioning to fragile products, but a top performer for image clarity.
  • BC flute – has 9/32” (7 mm) total thickness. Double wall BC flute is a corrugated board composed of 2 mediums and 3 liners to create what is called double wall. The BC flute is composed of one C-flute medium and one B-Flute medium, hence the term BC-flute. BC double wall is a strong corrugated board used when strength and superior stacking strength are needed.

What is the Edge Crush Test?

The Edge Crush Test, or ECT for short, measures how much pressure a corrugated box can deal with before it’s crushed. This is primarily used when packages are expected to spend extended time stacked on the shelf. ECT is generally less expensive than burst strength boxes because they don’t require a minimal weight per area. With using less paper on the corrugated box, this leads to a decrease in price. This leaves ECT more susceptible to punctures and tears.

What is Mullen Burst Value?

The Mullen value represents how much pressure a corrugated box can cope with before being punctured or bursting. Represented with a three- or four-digit number (i.e. 200, 350, 1100), the higher the number, the stronger the box. The primary difference between the two is Mullen Burst requires a minimum board basis weight, essentially this means that ECT is allowed, and often does, to use less paper in their boards. These boxes are typically used with products at risk of puncturing through the package itself. These boxes tend to handle the small parcel network better.

Have any other questions? Contact Korpack today! We’d be glad to help!

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