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    METHOD AND SYSTEM FOR OBTAINING AT LEAST ONE ACOUSTIC PARAMETER OF AN ENVIRONMENT
    81.
    发明申请
    METHOD AND SYSTEM FOR OBTAINING AT LEAST ONE ACOUSTIC PARAMETER OF AN ENVIRONMENT 审中-公开

    公开(公告)号：US20190250028A1

    公开(公告)日：2019-08-15

    申请号：US15757797

    申请日：2016-08-30

    Applicant: SAINT-GOBAIN ISOVER ,  SAINT-GOBAIN PLACO

    Inventor： Brice DUBOST ,  Francois SAUSSET

    IPC: G01H7/00

    Abstract: At least one acoustic parameter of an environment is obtained by emitting a sound signal emitted, receiving a sound signal received, estimating a sampling frequency shift and of a temporal shift between the emission and reception devices on the basis of impulse responses obtained on the basis of portions of the sound signal received and of corresponding portions of the sound signal emitted, obtaining a corrected sound signal received by applying to the sound signal received a sampling frequency shift correction and a temporal shift correction on the basis of the estimating, determining the impulse response of the environment on the basis of portions of the corrected sound signal received and of corresponding portions of the sound signal emitted, and obtaining acoustic parameters of the environment on the basis of the impulse response.

    Method for manufacturing plasterboards
    82.
    发明授权
    Method for manufacturing plasterboards 有权

    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.

    Method for the Production of Gypsum-Based Boards and Stucco Slurry Comprising Non-Pregelatinized Migratory Starch for Use Therewith
    84.
    发明申请
    Method for the Production of Gypsum-Based Boards and Stucco Slurry Comprising Non-Pregelatinized Migratory Starch for Use Therewith 审中-公开

    公开(公告)号：US20180354857A1

    公开(公告)日：2018-12-13

    申请号：US16060783

    申请日：2016-12-14

    Applicant: Saint-Gobain Placo SAS

    Inventor： Richard Morlat ,  James Fletcher ,  Radomir Kamler

    IPC: C04B28/14 ,  C04B24/38 ,  C04B14/42 ,  B28B17/02 ,  B28B5/02 ,  B28B11/12

    Abstract: A method for continuously forming gypsum-based panels of high fixing strength comprises the steps of: •forming a mixture comprising stucco, non-pregelatinized migratory starch, glass fibre, fluidizer and water; •casting the mixture in a continuous band; •maintaining the band under conditions sufficient for the stucco to form an interlocking matrix of set gypsum; •cutting the band to form one or more wet panel precursors; and •drying the wet panel precursor to form one or more gypsum-based panels. •The weight ratio of water to stucco in the mixture is less than 0.7; •the stucco is present in the mixture in an amount of over 60 wt % relative to the total solids content of the mixture; •the starch is present in the mixture in an amount of over 3 wt % relative to the the stucco; •the glass fibre is present in the mixture in an amount of over 1 wt % relative to the stucco; •the fluidizer is is present in the mixture in an amount of at least 0.1 wt % relative to the stucco; and the density of the gypsum-based panel is greater than 700 kg/m.

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