WHAT ARE THEY MADE OF?
Fluted boxes are constructed from three layers:
Linerboards: The flat, outer and inner surfaces of the box, typically made from kraft paper.
Fluting: The wavy middle layer that provides rigidity and cushioning. Different fluting sizes (A, B, C, etc.) exist, affecting thickness and strength.
- A-Flute: Thickest and sturdiest, best for heavy or fragile items.
- B-Flute: Medium thickness, balance of strength and printability, commonly used for food and retail packaging.
- C-Flute: Most common, good balance of strength, cushioning, and printing, used for general shipping and display boxes.
- E-Flute: Thin and lightweight, good for small boxes and point-of-purchase displays.
- F-Flute: Extra thin and rigid, excellent printing surface, used for cosmetics, jewelry, and clamshell packaging.
Strength and Support: The flute's wavy form acts like tiny beams, increasing the box's compression strength and allowing it to hold heavier items without crushing.
Cushioning and Protection: The air pockets created by the flutes absorb shock and protect delicate contents from bumps and knocks during travel.
Stackability: The flutes help maintain the box's shape, allowing it to be stacked securely without buckling under the weight of other boxes.
Printing Surface: The flat liners provide a good surface for printing designs, branding, or information directly onto the box.