All corrugated stock comprises of two or more flat paperboard sheets glued on one or more layers of a wavy-shaped corrugation medium. The two paperboard sheets are known as ‘linerboard’ and the wavy-shaped medium is called ‘flute’. It is the flute that is the source of the structural strength in a corrugated fiberboard. Flute is generally available in various thickness options such as E-flute and B-flute in order to cater to different durability requirements.
The wavy-pattern of the flute is typically visible to some degree on corrugated packaging as a series of parallel lines. The visibility of these lines can be minimized by using a thicker cardboard sheet instead of linerboard during the corrugation manufacturing process. We suggest that customers should let us know of any visual or aesthetic requirements at the time of getting a price estimate for your project in order to ensure accurate pricing.