PLASTER BOARDS HAVING INTERNAL LAYERS AND METHODS FOR MAKING THEM

Title:

PLASTER BOARDS HAVING INTERNAL LAYERS AND METHODS FOR MAKING THEM

Document Type and Number:

WIPO Patent Application WO/2019/067607

Kind Code:

A3

Abstract:

Disclosed herein are plaster boards that include first and second layers of hardened plaster material, a liner attached to the first layer of hardened plaster material, and a first material (e.g., a polymer material such as a viscoelastic polymer) adhered between the liner and the second layer of hardened plaster material. The liner includes one or more structurally weakened regions each extending substantially from a first edge to a second opposing edge of the plaster board. The structurally weakened regions of the liner may facilitate creation of a fissure that propagates substantially within a plane within the plaster board. Methods for making the plaster boards may involve drying wet plaster material while it is in contact with a liner having structurally weakened regions, processing a liner to form its structurally weakened regions while in contact with wet plaster material, or processing a liner to form its structurally weakened regions while in contact with hardened plaster material.

Inventors:

DIMITRAKOPOULOS JAMES (US)
INFANTE VINCENT (US)
BRIDENSTINE JOHN (US)
PUGH DAVID (US)
HAGELGANS DAVID (US)
WANG YING (US)
XU XUEJUAN (US)

Application Number:

PCT/US2018/052943

Publication Date:

May 09, 2019

Filing Date:

September 26, 2018

Export Citation:

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Assignee:

CERTAINTEED GYPSUM INC (US)

International Classes:

B32B13/12; B32B3/26; B32B5/14; B32B13/04; B32B27/18

Domestic Patent References:

WO2013045602A2

2013-04-04

Foreign References:

US20090004448A1	2009-01-01
CN106476357A	2017-03-08
CN103291035A	2013-09-11
US20130234373A1	2013-09-12

Other References: