Abstract: In one embodiment, a multiwall sheet comprises: non-intersecting polymer walls comprising outer layers and transverse layers. The transverse layers intersect the walls to form cells. The multiwall sheet has a non-uniform cell density. In another embodiment, a multiwall sheet can comprise: non-intersecting polymer walls comprising outer layers and a transverse layer and/or a divider. The transverse layer and/or the divider extends from one of the polymer walls to another of the polymer walls to form cells. The multiwall sheet has a non-uniform cell density. In yet another embodiment, a multiwall sheet comprises: non-intersecting polymer walls comprising outer layers and transverse layers. The transverse layers intersect the walls to form cells. The multiwall sheet has a different number of inner layers, transverse layers, and/or dividers, in different portions of the sheet. The multiwall sheets can be used, for example, in a naturally light structure.

Abstract: Disclosed herein is polymer sheeting articles. In one embodiment a multiwall sheet is disclosed. The multiwall sheet comprises: a top layer, a bottom layer, a web disposed between the top layer and the bottom layer, and two or more air gaps in a perpendicular line between the top layer and the bottom layer. The multiwall sheet exhibits a U-value of less than or equal to 2.3 W/m2K, and has an AgUT ratio of greater than or equal to about 0.168.

Abstract: Disclosed herein are multiwall panels comprising micro-scale surface features and methods of making the same. In one embodiment, a multiwall panel is disclosed. The multiwall panel comprises, a top sheet, a bottom sheet, a rib disposed between and connected to the top sheet and the bottom sheet, and a micro-scale surface feature disposed on a surface of the multiwall panel, wherein the micro-scale surface feature comprises a width measured at a base of the surface feature, wherein the width is about 30 micrometers to about 3 millimeters. In another embodiment, a process of forming multiwall panels is disclosed. In yet another embodiment, a naturally lit structure is disclosed.

Abstract: Disclosed herein is a hollow multi-wall structural component comprising a plurality of spaced-apart sheets that transmit an incident radiation, and connected with reinforcing members; wherein at least a portion of one surface of at least one of the sheets comprises a plurality of radiation transmission-enhancing elements. Methods for forming the hollow multi-wall structural component are also described.

Abstract: Disclosed herein are storm panels and methods for manufacturing the same. In one embodiment, the storm panel comprises a polymeric sheet having an arced geometry. The polymeric sheet comprises, a polymeric substrate layer, a polymeric top layer comprising an ultraviolet light stabilizer, a polymeric bottom layer comprising an ultraviolet light stabilizer. The storm panel has a uniform thickness, exhibits less than or equal to about 4.0 % haze, and exhibits a yellowness index shift that is less than or equal to about 9.0 after 1,500 simulated hours of aging.

Abstract: A solar energy conversion device comprises a solar collector configured to collect solar energy. The solar collector comprises a plurality of roof panels. Each of the panels comprises at least one roof sheet comprising at least one wall, and further comprises a substantially transparent thermoplastic polymer.

Abstract: A sheet structure includes a pair of corrugated sheets formed in a zigzag pattern, the pair comprising an upper sheet and a lower sheet. In an exemplary embodiment, each of the pair of corrugated sheets further includes a flat portion disposed at selected intervals between individual zigzags. The flat portions of the upper sheet are aligned with corresponding flat portions of the lower sheet so as to maintain the upper and lower sheets in a double wall configuration.

Abstract: An extruded, light-transmitting sheet structure includes a pair of outer walls separated apart from one another. At least one dome is formed as part of one of the pair of outer walls, and is disposed at a first outer edge of the structure. A rib structure is disposed between the pair of outer walls, wherein the rib structure includes at least one rib that extends into the dome.

Abstract: A solar energy conversion device comprises a solar collector configured to collect solar energy. The solar collector comprises a plurality of roof panels. Each of the panels comprises at least one roof sheet comprising at least one wall, and further comprises a substantially transparent thermoplastic polymer.

Abstract: A sheet structure includes a pair of corrugated sheets formed in a zigzag pattern, the pair comprising an upper sheet and a lower sheet. In an exemplary embodiment, each of the pair of corrugated sheets further includes a flat portion disposed at selected intervals between individual zigzags. The flat portions of the upper sheet are aligned with corresponding flat portions of the lower sheet so as to maintain the upper and lower sheets in a double wall configuration.

Abstract: An extruded, light-transmitting sheet structure includes a pair of outer walls separated apart from one another. At least one dome is formed as part of one of the pair of outer walls, and is disposed at a first outer edge of the structure. A rib structure is disposed between the pair of outer walls, wherein the rib structure includes at least one rib that extends into the dome.