公开(公告)号：US20180355613A1

公开(公告)日：2018-12-13

申请号：US16062197

申请日：2016-12-15

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： C. Thiagarajan ,  Frans Adriaansen ,  Przemyslaw Olszynski ,  Bernardus Johannes Paulus Jansen ,  Johann Wagner ,  Peter van den Bleek

IPC: E04C2/34 ,  E04C2/22 ,  E04C2/54

CPC classification number: E04C2/3405 ,  E04C2/22 ,  E04C2/543 ,  E04C2002/3488

Abstract: A multiwall sheet (30) comprising a first wall (2); a second wall (4); a plurality of ribs (8) extended between the first and second walls (2, 4); and a plurality of mid-ribs (6), wherein one mid-rib (6) extends between each two adjacent ribs (8), wherein the mid-ribs (6) extend at a mid-rib angle (18) relative to an adjoining rib (8), and wherein the mid-rib angle (18) is not 90° relative to a rib (8) to which it attaches, wherein the mid-ribs (6) attach only to adjacent ribs (8), and wherein the mid-ribs (6) do not attach to either the first or second walls (2, 4).