Types of Flutes in Corrugated Boxes

There are various types of the corrugations (Flute types) used in the shipper preparation.

A Flute –

A Flute in a corrugated box is the original corrugated flute design and is the thickest.

A Flutes provides great cushioning properties which is mainly used in fragile products providing it strength and protection from damage.

It contains the 33 Flutes per foot and the ¼ inch thick.

B Flute –

B Flute in Corrugated box has low arch height (Flute Height) and more flutes per foot as compared to A Flute.

The higher flutes per foot and lower flute height contributes in more strength making it stiff and flat, also making it easy for printing and die cutting.

B-flute provides great resistance to punctures and crushing, and it also takes up less space in the warehouse.

B-flute, originally designed for package canned goods, also used in crafting beverage trays, creating wrap-around blanks, forming glass-to-glass packs, and manufacturing slipsheets.

It contains 47 flutes per foot and 1/8 inch thick.

C Flute –

C Flute in Corrugated box is most commonly used in the shipping industry.

Around 80% of the Corrugated box used are made up of C flute.

C Flute is used in packaging of glass materials and dairy products.

C Flute has good stack strength and excellent crushing strength and high acceptance to printing.

C Flute Contains 39 flutes per foot and 3/16 inch thick.

E Flute –

E flute in Corrugated box has more crushing resistance and comparatively flat surface for printing operations.

E Flute is thinner and provide better cushioning and has a flat surface resulting in being used in

E Flute is more preferable over conventional cardboard box for packaging of fragile glass products and ceramic products due to its properties of providing thinner and flat surface and better cushioning.

E Flute contains 90 flutes per foot and 1/16 inch thick.

F Flute –

F Flute in Corrugated box has more flutes than E Flute, making it stiffer and flatter.

F Flute is commonly used in cosmetics, pharmaceutical products and other delicate products packaging.

F Flute contains 125 flutes per foot and 1/32 inch thick.