公开(公告)号：US10239230B2

公开(公告)日：2019-03-26

申请号：US15483585

申请日：2017-04-10

申请人： United States Gypsum Company

发明人： Alfred Li ,  Chris C. Lee ,  Cesar Chan ,  Ronald E. Schenck ,  Weixin David Song ,  Curtis B. Loring ,  James R. Wittbold ,  William J. Rago ,  Christopher Robert Nelson

IPC分类号： B28B19/00 ,  B05C5/02

摘要： A slurry distribution system can include a feed conduit and a distribution conduit in fluid communication therewith. The feed conduit can include a first feed inlet and a second feed inlet disposed in spaced relationship thereto. The distribution conduit can extend generally along a longitudinal axis and include an entry portion and a distribution outlet in fluid communication therewith. The entry portion is in fluid communication with the first and second feed inlets of the feed conduit. The distribution outlet extends a predetermined distance along a transverse axis, which is substantially perpendicular to the longitudinal axis. The slurry distribution system can be placed in fluid communication with a gypsum slurry mixer adapted to agitate water and calcined gypsum to form an aqueous calcined gypsum slurry.

公开(公告)号：US09540810B2

公开(公告)日：2017-01-10

申请号：US14044582

申请日：2013-10-02

申请人： United States Gypsum Company

发明人： Yijun Sang ,  Chris C. Lee ,  Cesar Chan ,  Weixin David Song

IPC分类号： E04C2/26 ,  E04C2/04 ,  C04B28/14 ,  C08B30/14 ,  C09J103/02 ,  C09J103/08 ,  C08L3/02 ,  C08L3/08 ,  C04B111/00

CPC分类号： C04B28/14 ,  B28B1/16 ,  C04B24/38 ,  C04B2111/0062 ,  C04B2111/00672 ,  C08B30/14 ,  C08L3/02 ,  C08L3/08 ,  C09J103/02 ,  C09J103/08 ,  E04C2/043 ,  Y02W30/97 ,  Y10T428/253 ,  Y10T428/31971 ,  C04B24/383 ,  C04B14/28 ,  C04B18/24

摘要： Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.

摘要翻译： 公开了与具有中等范围粘度（即约20厘泊至约700厘泊）的预胶化淀粉相关的产品（例如面板），浆料和方法，以及挤出的预胶化淀粉。

公开(公告)号：US11168030B2

公开(公告)日：2021-11-09

申请号：US16053485

申请日：2018-08-02

申请人： United States Gypsum Company

发明人： Yijun Sang ,  Chris C. Lee ,  Cesar Chan ,  Weixin David Song

IPC分类号： C04B28/14 ,  C09J103/02 ,  C09J103/08 ,  C08L3/02 ,  C08L3/08 ,  C08B30/14 ,  E04C2/04 ,  B28B1/16 ,  C04B24/38 ,  C04B111/00

摘要： Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.

公开(公告)号：US10464847B2

公开(公告)日：2019-11-05

申请号：US15359196

申请日：2016-11-22

申请人： United States Gypsum Company

发明人： Yijun Sang ,  Chris C. Lee ,  Cesar Chan ,  Weixin David Song

IPC分类号： C08B30/14 ,  C04B28/14 ,  B28B1/16 ,  C08L3/02 ,  C08L3/08 ,  C09J103/02 ,  C09J103/08 ,  E04C2/04 ,  C04B24/38 ,  C04B111/00

摘要： Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.

公开(公告)号：US10407345B2

公开(公告)日：2019-09-10

申请号：US15704365

申请日：2017-09-14

申请人： United States Gypsum Company

发明人： Qiang Yu ,  Weixin David Song

IPC分类号： C04B28/14 ,  B32B13/02 ,  B32B13/04 ,  B32B13/08 ,  B32B13/14 ,  B32B17/02 ,  B32B29/00 ,  C04B103/00 ,  C04B111/00

摘要： This invention provides low dust low density gypsum wallboard products having high total core void volumes, corresponding to low densities in the range of about 10 to 30 pcf. The wallboards have a set gypsum core formed between two substantially parallel cover sheets, the set gypsum core preferably having a total void volume from about 80% to about 92%, and made from a slurry including stucco, pregelatinized starch, and a naphthalenesulfonate dispersant. The combination of the pregelatinized starch and the naphthalenesulfonate dispersant also provides a glue-like effect in binding the set gypsum crystals together. The wallboard formulation, along with small air bubble voids (and water voids) provides dust control during cutting, sawing, routing, snapping, nailing or screwing down, or drilling of the gypsum-containing products. This invention also provides a method of making the low dust low density gypsum products including the introduction of soap foam in an amount sufficient to form a total void volume, including air voids, preferably from about 80% to about 92% in the set gypsum core, corresponding to a set gypsum core density from about 10 pcf to about 30 pcf. The wallboards produced by the method generate significantly less dust during working.

公开(公告)号：US10406779B2

公开(公告)日：2019-09-10

申请号：US15802048

申请日：2017-11-02

申请人： United States Gypsum Company

发明人： Qiang Yu ,  Weixin David Song

IPC分类号： B32B13/08 ,  B32B3/26 ,  B32B5/02 ,  B32B17/02 ,  B32B29/00 ,  C04B28/14 ,  B32B13/14 ,  C04B111/00 ,  C04B111/40

摘要： This invention provides gypsum wallboards with a unique microstructure where the walls between voids are enhanced in thickness and strength to substantially improve the strength and handling properties of the wallboards. A method of making lightweight gypsum wallboards is also provided.