公开(公告)号：US10822275B2

公开(公告)日：2020-11-03

申请号：US16811572

申请日：2020-03-06

Applicant: SAINT-GOBAIN PLACO

Inventor： Yann Dion ,  Katarzyna Chuda ,  Caroline Demathieu-Roeltgen ,  Marion Chenal

IPC: C04B14/00 ,  C04B16/00 ,  C04B28/14 ,  C04B20/00 ,  C04B14/02 ,  C04B111/10 ,  C04B111/00 ,  E04C2/04

Abstract: A plasterboard includes a first layer of plaster and a second layer of plaster, wherein the first layer includes activated carbon; the second layer includes a scavenging agent, wherein a content of scavenging agent in the first layer, expressed as percentage by weight of dry matter, is less than a content of scavenging agent in the second layer, and wherein the second layer is free of activated carbon.

公开(公告)号：US10335764B2

公开(公告)日：2019-07-02

申请号：US16084468

申请日：2017-03-13

Applicant: SAINT-GOBAIN PLACO

Inventor： Yann Dion ,  Katarzyna Chuda ,  Caroline Demathieu-Roeltgen ,  Marion Chenal

IPC: B01J20/20 ,  B01J20/28 ,  C04B28/14 ,  C04B111/00

Abstract: A process for the manufacture of a plasterboard including activated carbon, includes: preparing a main mixed batch including a foaming agent and devoid of activated carbon; preparing a secondary mixed batch including powdered activated carbon; providing a first facing sheet; pouring the secondary mixed batch over the first facing sheet, the secondary mixed batch forming a first plaster layer; pouring the main mixed batch over the first plaster layer, the main mixed batch forming a second plaster layer; providing a second facing sheet on the first and second plaster layers; and forming the plasterboard; wherein the secondary mixed batch has a greater density than the main mixed batch.