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TYPES OF BOARD
According to its construction, corrugated board is classified into:


Board made from one layer of fluting and one liner - called "single-faced corrugated board" or "single-faced rolls". Single faced rolls are commonly used for wrapping uneven objects and as separating pads.


Board made from one layer of fluting sandwiched between two liners is called "single wall" or "double-faced" corrugated board.


Board made from two layers of fluting sandwiched between three liners is called "twin cushion" or "double-wall" corrugated board. Different flutes may be combined in twin cushion board. Twin cushion should be used when stronger boxes and extra padding are needed. Excellent for stacking heavy items.



Three layers of fluting sandwiched between four liners is called "triple wall" or "triwall". Again different flutes may be combined to form triple wall board. Triple wall boxes are the strongest and most crush resistant boxes to use for storage and transit.