In one embodiment, a multiwall sheet comprises: non-intersecting polymer walls (2) comprising outer layers (10,12) and transverse layers (4). The transverse layers (4) intersect the walls to form cells (16). The multiwall sheet has a non-uniform cell density. In another embodiment, a multiwall sheet can comprise: non-intersecting polymer walls (2) comprising outer layers (10,12) and a transverse layer (4) and/or a divider (6). The transverse layer (4) and/or the divider (6) extends from one of the polymer walls (2) to another of the polymer walls (2) to form cells (16). The multiwall sheet has a non-uniform cell density. In yet another embodiment, a multiwall sheet comprises: non-intersecting polymer walls (2) comprising outer layers (10,12) and transverse layers (4). The transverse layers (4).intersect the walls (2) to form cells (16). The multiwall sheet has a different number of inner layers (14), transverse layers (4), and/or dividers (6), 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
PCT/US2008/052424
Publication Number
2008/094982
Application Date
January 30, 2008
Publication Date
August 7, 2008
Inventor
Hamersveld Eelco
Van
Adriaansen Frans
Thiagarajan Chinniah
Agent
CURBELO Pamela J
Assignee
Hamersveld Eelco
Van
Adriaansen Frans
Thiagarajan Chinniah
General Electric Company
IPC
E04D 03/28
E04D 03/06
E04C 02/54
E04C 02/20
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