Method for the Production of Gypsum-Based Boards and Stucco Slurry Comprising Non-Pregelatinized Migratory Starch for Use Therewith

    公开(公告)号:US20200262756A1

    公开(公告)日:2020-08-20

    申请号:US16869555

    申请日:2020-05-07

    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.

    Fire resistant calcium sulphate-based products

    公开(公告)号:US10584063B2

    公开(公告)日:2020-03-10

    申请号:US15525523

    申请日:2015-11-17

    Abstract: The present invention provides a calcium sulphate-based product (e.g. a wall board) comprising gypsum, a pozzolan source such as a clay additive, rice husk ash or diatomaceous earth and a metal salt additive. The product may be produced by drying an aqueous slurry comprising calcined gypsum, the pozzolan source and the metal salt additive. The clay additive may be a kaolinitic clay. The metal salt additive may be a magnesium salt e.g. magnesium nitrate, magnesium chloride or magnesium hydroxide.

    METHOD AND DEVICE FOR CUTTING A PLATE OR PANEL OF POROUS CONSTRUCTION MATERIAL

    公开(公告)号:US20200047266A1

    公开(公告)日:2020-02-13

    申请号:US16082165

    申请日:2017-03-15

    Abstract: A device for cutting a plate or panel of porous construction material includes a movement structure that moves the plate or panel and includes at least one conveyor, and which is able to move in a direction (X). The device also includes a wire to cut the plate or panel and a structure for passing the wire in a direction (Y) perpendicular to the direction (X) of travel of the plate or panel. The device for cutting allows a cut to be made that greatly limits the waste and dust generated.

    Earthquake Resistant Construction Element
    116.
    发明申请

    公开(公告)号:US20190161990A1

    公开(公告)日:2019-05-30

    申请号:US15772687

    申请日:2016-10-27

    Abstract: An earthquake resistant wall construction is described. The earthquake resistant wall construction comprises a first runner, a second runner, at least one first earthquake resistant insert in communication with the first runner or second runner. The earthquake resistant insert is connected to a construction board and comprises at least one first elongate slot, wherein the earthquake resistant insert is held in communication with said first runner or second runner via at least one first fixing member which passes through the first elongate slot.

    Apparatus and Method for the Production of Foam

    公开(公告)号:US20190077719A1

    公开(公告)日:2019-03-14

    申请号:US16186791

    申请日:2018-11-12

    Abstract: An apparatus for preparing foam for incorporation into cementitious slurry comprises a conduit having an inlet for receiving a gas feed and a surfactant feed, and an outlet for allowing the exit of foam. The conduit houses a porous plug that provides a partial barrier to fluid flow along the conduit, the plug comprising a plurality of particles that are packed in a regular array and that define a three-dimensional network of pores extending therebetween. The apparatus comprises a resilient component located between the plug and the conduit.

    PLASTERBOARD
    119.
    发明申请
    PLASTERBOARD 审中-公开

    公开(公告)号:US20190077711A1

    公开(公告)日:2019-03-14

    申请号:US16084434

    申请日:2017-03-13

    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.

Patent Agency Ranking