Patent ID: 11938705
Assignee: SEMI CORR CONTAINERS, INC.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 1:
2. A paperboard product comprising;
a top liner;
a creased base layer of a first flute type having opposed tips directed in a downward direction and upward direction, respectively, bonded to the top liner to define a singleface web with cross flute bond lines directed in the downward direction;
a bottom liner;
a second creased base layer of a second flute type having opposed tips directed in a downward direction and upward direction, respectively, with multiple cross flute bond lines creased in-line at intervals across a second web with cross flute bond lines directed in the downward direction; and
a third creased base layer of a third flute type having opposed tips directed in a downward direction and upward direction, respectively, with multiple cross flute bond liners creased in-line at intervals across a third web with cross flute bond lines directed in the downward direction;
wherein the singleface web comprised of the top liner and the creased base layer of the first flute type is bonded directly to the second creased base layer of the second flute type, the second creased base layer of the second flute type is bonded directly to a third creased base layer, and the third creased base layer is bonded to the bottom liner to form a five ply triplewall panel.