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US 11,975,518 B2Granted
Paperboard panel and method of making same
AssigneeStar Board Materials, LLC
InventorGregory R. Kula
Life of this patent
Estimating the term…
Abstract
A method for fabricating a sheet structure from paper and/or paperboard material, which provides a thickness dimension ordinarily associated with corrugated paperboard material. The sheet structure is constructed from a first planar linerboard sheet and a second non-planar linerboard sheet, wherein a plurality of projections are cut and folded from the second linerboard sheet and are adhesively coupled to the first linerboard sheet, such that portions of the projections define a standoff between the first and second linerboard sheets.
Claims6
A method of fabricating a paperboard panel, comprising the steps of:
- fabricating a first linerboard;
- fabricating a second linerboard such that the paperboard panel consists of only the first and second linerboards;
- forming a spacer structure, the spacer structure comprising at least one flap member extending monolithically from one of the first and second linerboards, the step of forming the spacer structure comprising the steps of
- cutting at least one flap member into one of the first and second linerboards,
- folding the at least one flap member in a first direction, into an orientation defining an angle with respect to the one of the first and second linerboards,
- folding a tip portion of the at least one flap member in a second direction, to define a body portion of the at least one flap member, extending between the tip portion and the one of the first and second linerboards, the tip portion being folded into an orientation defining an angle with respect to the body portion;
- coupling a surface of the tip portion of the at least one flap member to an inwardly-facing surface of the other of the first and second linerboards, the step of cutting at least one flap member further comprising cutting at least two flap members, extending from and defining at least in part, corresponding portions of an edge of a single aperture in the one of the first and second linerboards, wherein each of the at least two flap members further comprises a substantially triangular member having a base region adjacent one of said edge portions and each of the at least two flap members further comprises a free point disposed at an end thereof opposite said base region, wherein the free points of the at least two flap members are physically separate and spaced apart from one another at locations of coupling to the other of the first and second linerboards.
4 more elements
A method of fabricating a paperboard panel, comprising the steps of:
- fabricating a first linerboard;
- fabricating a second linerboard, such that the paperboard panel consists of only the first and second linerboards;
- forming a spacer structure, the spacer structure comprising at least one flap member extending monolithically from one of the first and second linerboards, the step of forming the spacer structure comprising the steps of:
- cutting at least one flap member into one of the first and second linerboards,
- folding the at least one flap member in a first direction, into an orientation defining an angle with respect to the one of the first and second linerboards,
- folding a tip portion of the at least one flap member in a second direction, to define a body portion of the at least one flap member, extending between the tip portion and the one of the first and second linerboards, the tip portion being folded into an orientation defining an angle with respect to the body portion;
- coupling a surface of the tip portion of the at least one flap member to an inwardly-facing surface of the other of the first and second linerboards,
- wherein the step of cutting at least one flap member further comprises a step of:
- cutting at least three flap members extending from and defining at least in part, corresponding portions of an edge of a single aperture in the one of the first and second linerboards;
- at least two flat members of the at least three flap members extending from and defining at least in part, corresponding portions of an edge of a single aperture in one of the first and second linerboards, wherein the corresponding edge portions are disposed immediately adjacent one another and define an included angle therebetween, which angle is greater than zero degrees and less than one hundred eighty degrees;
- at least two of the flap members of the at least three flap members extending from and defining at least in part, corresponding portions of an edge of a single aperture in the one of the first and second linerboards, wherein the at least two flap members are defined by a cut line disposed along a common edge region of the at least two flap members.
8 more elements
Dependencies are inferred from the claim text.