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 transverselayer 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 ofinner 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.

Title
Multiwall polymer sheet, and methods for making and articles using the same
Application Number
200880009957
Publication Number
101668908A
Application Date
January 30, 2008
Publication Date
March 10, 2010
Inventor
Van Hamersveld Eelco
Adriaansen Frans
Thiagarajan Chinniah
Agent
Bian Xinqin
Wu Peishan
Assignee
Sabic Innovative Plastics Ip
IPC
E04C 02/20|E04C 02/54|E04D 03/06|E04D 03/28