Multiwall sheet and methods of using the same
AssigneeSabic Global Technologies B.V.
InventorsMichael J. Davis, Chinniah Thiagarajan
Life of this patent
Estimating the term…
Abstract
In one embodiment, a multiwall sheet can comprise: a first wall; a second wall; an intermediate wall disposed between the first wall and the second wall; a first set of ribs disposed between the first wall and the intermediate wall; a second set of ribs disposed between the second wall and the intermediate wall; a cavity disposed between adjacent ribs; wherein the multiwall sheet is configured to expand and/or collapse when a mechanical force (preferably shear force) is applied to the intermediate wall. Preferably the multiwall sheet has a flexural rigidity of greater than or equal to 10 N/mm.
Claims17
A multiwall sheet, comprising:
- a first wall;
- a second wall;
- an intermediate wall disposed between the first wall and the second wall;
- a first set of ribs disposed between the first wall and the intermediate wall;
- a second set of ribs disposed between the second wall and the intermediate wall;
- and
- a cavity disposed between adjacent ribs of the first set of ribs and the second set of ribs;
- wherein the multiwall sheet is configured to expand and/or collapse when a mechanical force is applied to the intermediate wall;
- and
- further comprising a side wall configured to attach to the multiwall sheet after an expansion and/or collapse, wherein the side wall extends from the first wall to the second wall and is configured to interlock with the locking segment.
A method of forming a multiwall sheet, comprising:
- extruding the multiwall sheet as a single unitary structure;
- wherein the multiwall sheet comprises a first wall, a second wall, an intermediate wall disposed between the first wall and the second wall, a first set of ribs disposed between the first wall and the intermediate wall, a second set of ribs disposed between the second wall and the intermediate wall, and a cavity disposed between adjacent ribs of the first set of ribs and the second set of ribs, wherein the multiwall sheet is configured to expand and/or collapse when a mechanical force is applied to the first wall, the second wall, the intermediate wall, or a combination thereof, and further comprising a side wall configured to attach to the multiwall sheet after an expansion and/or collapse, wherein the side wall extends from the first wall to the second wall and is configured to interlock with the locking segment, and wherein a flexural rigidity of the multiwall sheet is greater than or equal to 10 N/mm.
Dependencies are inferred from the claim text.