As explained in Flourish Packaging’s article “The Ultimate Guide to Corrugated Boxes”, the term “cardboard box” is often incorrectly used to describe what is technically known as a “corrugated fiberboard carton.” These versatile boxes are used extensively in retail packaging, shipping, and product displays due to their lightweight yet durable composition.
Corrugated Composition
Corrugated boxes are made of linerboard and a wavy, fluted medium, both crafted from a durable material called containerboard. The combination of linerboard and medium determines the box’s strength. There are four main types of corrugated construction:
- Single Face: One corrugated medium glued to a flat linerboard.
- Single Wall: One corrugated medium sandwiched between two linerboards.
- Double Wall: Two corrugated mediums and three linerboards.
- Triple Wall: Three corrugated mediums and four linerboards for maximum strength.
Flute Profiles
Flute profiles affect the box’s strength, cushioning, and aesthetic capabilities. Common profiles include:
- A-Flute: 33 flutes/foot; high compression strength.
- B-Flute: 47 flutes/foot; ideal for canned goods.
- C-Flute: 39 flutes/foot; common in shipping cartons.
- E-Flute: 90 flutes/foot; used for retail packaging.
- F-Flute: 125 flutes/foot; small, detailed packaging.
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