公开(公告)号：US20200095766A1

公开(公告)日：2020-03-26

申请号：US16471836

申请日：2017-12-27

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Michael J. Davis ,  Chinniah Thiagarajan

IPC: E04C2/40 ,  B32B3/08 ,  B32B1/00 ,  B29C69/02 ,  B29C48/13 ,  E04B1/80 ,  E04C2/34 ,  E04C2/38 ,  E04C2/54 ,  E04B1/82 ,  E04B1/90

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.

公开(公告)号：US11041307B2

公开(公告)日：2021-06-22

申请号：US16471836

申请日：2017-12-27

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Michael J. Davis ,  Chinniah Thiagarajan

IPC: E04C2/40 ,  B29C48/13 ,  B29C69/02 ,  B32B1/00 ,  B32B3/08 ,  E04B1/80 ,  E04B1/82 ,  E04B1/90 ,  E04C2/34 ,  E04C2/38 ,  E04C2/54 ,  B29K69/00 ,  B29K75/00 ,  B29K105/04 ,  B29L31/00

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.