Patent ID: 8263209

Claim:
A packaging corrugated board having peripheral edges oblique to flute direction thereof, comprising a board body, the board body comprising a plurality of insertion boards and a plurality of slots corresponding to the insertion boards, the board body being formed of a first liner board, a second liner board, and a fluted medium sandwiched between the first and the second liner board; the fluted medium being a corrugated board having a plurality of flutes, and a direction in which the flutes extend being defined as a flute direction; the board body defining a plurality of peripheral edges, and at least a large part of the peripheral edges being neither parallel nor perpendicular to the flute direction; wherein a total length of the peripheral edges that are neither parallel nor perpendicular to the flute direction is larger than that of the peripheral edges that are parallel or perpendicular to the flute direction, such that peripheral edges of the insertion boards are neither parallel nor perpendicular to the flute direction to prevent from damaging the peripheral edges and corners of the insertion boards when the insertion boards are repeatedly and detachably inserted into the slots correspondingly provided on the board body.