Microflute

Microflute refers to a type of corrugated board that uses a very small flute profile between two linerboards. The flute height and cross-section are finer than conventional corrugation (such as A-, B-, C-, or E-flutes), producing a sheet that is thinner while still offering cushioning and rigidity suitable for many applications. This combination often yields a smooth, high-quality printing surface, making microflute attractive for consumer packaging and displays.

Construction and production are tailored to a fine flute size, typically using kraft or recycled linerboards. Microflute boards are commonly produced as single-wall formats and can be finished with various coatings or liners to enhance printability. The production process emphasizes maintaining surface quality, which is important for high-resolution graphics used in premium packaging.

Applications for microflute include premium consumer packaging, cosmetics and fragrance boxes, electronics packaging, gift and subscription boxes, and point-of-purchase displays. It is also used for mailers and packaging that require a slim profile without sacrificing protection.

Advantages of microflute include lighter weight and material savings compared with traditional flute boards, improved surface smoothness for high-quality printing, and efficient use of shelf space due to thinner packaging. It is generally recyclable and can incorporate recycled content, contributing to sustainability goals.

Limitations include lower stacking or edge crush strength relative to heavier flute boards, which can limit suitability for demanding loads or long-term protection. Its use may require specialized converting equipment and process controls, and unit costs can be higher in some markets due to the finer manufacturing requirements.

See also: corrugated board, fluting, packaging.