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Class 156/346 - PLASTER BOARD MAKING APPARATUS


Subclass of Class 156 - Adhesive bonding and miscellaneous chemical manufacture
Definition: Apparatus particularly adapted to making sheets of settable
No. of patents: 36
Last issue date: 10/12/2010


NumberTitleIssue Date
7811413Apparatus for targeted delivery of additives to varying layers in gypsum panels
A multilayer gypsum board forming device, and a gypsum additive delivery system in which additives are delivered to one or more layers of a multi layered gypsum board panels, including engineered polymers, includes at least one additive assembly connected in-line wi...
10/12/2010
7364676Slurry spreader for cementitious board production
The invention provides a board forming system comprising a forming table comprising a belt with a surface for conveying a backing layer; a mixer fitted with a mechanism capable of depositing cementitious slurry material over a top surface of the backing layer; and a...
04/29/2008
7323082Method and apparatus for forming substantially plate-like ceramic articles
A method for forming plate-like ceramic articles, comprising at least one step for deposition by pouring of at least one layer of a ceramic mixture that comprises an aqueous vehicle on a substantially absorbent transfer surface adapted to draw the aqueous vehicle, a...
01/29/2008
7220329Method for applying reference markings to wallboard during manufacture
An apparatus and method for applying reference or grid markings to wallboard during the manufacturing process is disclosed. Reference or grid markings are applied to one sheet of cover paper at a location between the originating cover paper rolls and the cover paper...
05/22/2007
7056583Flyash coating
The present invention includes a coating. The coating includes flyash in a concentration of 25 to 70 percent by weight; Portland cement; silica; and a curing agent. The coating optionally includes one or more of chopped nylon fiber; styrene; and, rubber. ...
06/06/2006
6998359Article and process for maintaining orientation of a fiber reinforced matt layer in a sandwiched urethane construction
A multiple layer fiber reinforced material and method of constructing the same including the provision of a first layer of a roll lofted glass material. Optional variants include the pre-application of plywood, OSB or fiber reinforced cement board materials prior to...
02/14/2006
6986812Slurry feed apparatus for fiber-reinforced structural cementitious panel production
A feed apparatus for use in depositing a slurry upon a moving web having a direction of travel includes a main metering roll, a companion roll disposed in closely spaced relation to the metering roll to form a nip therebetween. The nip is constructed and arranged to...
01/17/2006
6866492Gypsum board forming device
A gypsum board forming device having a gypsum forming station including two laterally disposed edger shoes, and at least one laterally disposed edger bar clamping element on the edger bar. In one embodiment a laterally extending forming plate extends over the top su...
03/15/2005
6800174System for making wallboard or backerboard sheets including aerated concrete
A system for making wallboard or backerboard sheets may include a mixer for mixing materials for making aerated concrete, at least one face layer supply, and a former downstream from the mixer. The former is for forming core material having opposing first and second...
10/05/2004
6733261Apparatus for smooth surface gypsum fiberboard panels
An improved method and apparatus for imparting a smooth surface to a gypsum fiber panels. The method involves imparting energy to the surface of the slurry as the slurry is dewatered just prior to rehydration. The apparatus used to impart the energy is an air lance ...
05/11/2004
6638393Apparatus for manufacture of improved structural panel
The present invention comprises apparatus for the manufacture improved structural panel with synthetic ingredients, such as vermiculite and fibers. The improved structural panel achieves enhanced lateral and surface integrity by the use of fibers within t...
10/28/2003
6535785System and method for monitoring and controlling gas plasma processes
A system and method for monitoring the conditions in a gas plasma processing system while varying or modulating the RF power supplied to the system, so that resulting signals of the electrical circuits of the system provide information regarding operation...
03/18/2003
6488792Method and apparatus for manufacturing cementitious panel with reinforced longitudinal edge
A cementitious panel comprising a cementitious core which is fabric-reinforced at the surface thereof and whose longitudinal edges are reinforced by a network of fibers. A panel may be obtained wherein the surface edge reinforcement layers are relatively ...
12/03/2002
6483707Heat sink and thermal interface having shielding to attenuate electromagnetic interference
Heat sink and electrically non-conducting thermal interface having shielding to attenuate electromagnetic interference. The interface comprises a generally planar substrate having first and second outwardly facing surfaces. The substrate is formed from a ...
11/19/2002
6471799Method and device for producing gypsum boards
Provided are a process and an apparatus for producing gypsum boards, both of which feature minimized occurrence of defective products and especially excellent continuous productivity and superb efficiency. Making use of the facts that lining paper sheets ...
10/29/2002
6416619System for making wallboard or backerboard sheets including aerated concrete
A system for making wallboard or backerboard sheets may include a mixer for mixing materials for making aerated concrete, at least one face layer supply, and a former downstream from the mixer. The former is for forming core material having opposing first...
07/09/2002
6351683System and method for monitoring and controlling gas plasma processes
A system and method for monitoring the conditions in a gas plasma processing system while varying or modulating the RF power supplied to the system, so that resulting signals of the electrical circuits of the system provide information regarding operation...
02/26/2002
6340388Strengthened, light weight wallboard and method and apparatus for making the same
A novel wallboard composition is disclosed comprising a unique combination of synthetic binders selected for their ability to establish a strengthened permanent bond in the final dry state for use in a wallboard composition comprising primarily gypsum, an...
01/22/2002
6319312Strengthened, light weight wallboard and method and apparatus for making the same
A novel wallboard composition is disclosed comprising a unique combination of synthetic binders selected for their ability to establish a strengthened permanent bond in the final dry state for use in a wallboard composition comprising primarily gypsum, an...
11/20/2001
6190476Gypsum board manufacture with co-rotating spreader roller
Methods and apparatus are disclosed for producing gypsum board having at least one facing sheet, a core of cementitious material such as low density gypsum, and an intermediate layer of bond promoting material, such as higher density gypsum located thereb...
02/20/2001
6059907Process for preparing incombustible board for interior decoration and facing of architectures
Activated clay is mixed with fine sawdust and/or powder of the heart of kaoliang stalk, a small amount of a coloring agent and bittern containing calcium sulfate, calcium silicate, magnesium or magnesium chloride and the like, or a composition of componen...
05/09/2000
6045730Process monitor for gypsum board manufacturing
The temperature and/or moisture profile over time of gypsum boards is monitored as the boards harden, to facilitate effective curing of the boards prior to removing excess water therein in an industrial dryer. A substrate is moved by a curing conveyor ben...
04/04/2000
5997779Temperature monitor for gypsum board manufacturing
The temperature profile over time of gypsum boards is monitored as the boards harden, to facilitate effective curing of the boards prior to removing excess water therein in an industrial dryer. A substrate is moved by a curing conveyor beneath a gypsum sl...
12/07/1999
5912805Thermal interface with adhesive
A thermal interface for facilitating heat transfer from an electronic component to a heat sink. According to a preferred embodiment, the thermal interface comprises first and second generally planar substrates that are compressively bonded to one another....
06/15/1999
5718797Apparatus for manufacturing gypsum board
Apparatus and method for producing gypsum board, comprising apparatus for coating a cover sheet with a relatively high density gypsum slurry, apparatus for forming edge borders on the sheet with relatively high density gypsum slurry, and apparatus for for...
02/17/1998
5714032Method of manufacturing multilayer plasterboard and apparatus therefor
The apparatus includes a two-stage mixer formed within a single housing and including a first high shear mixer and a second low shear mixer. Plaster slurry is formed in the first mixer. A partition is laid on a first fixing sheet, a portion laid on a seco...
02/03/1998
5683635Method for preparing uniformly foamed gypsum product with less foam agitation
The invention provides an improved method for preparing foamed gypsum products. The invention can utilize a single mixing chamber and significantly improve the efficiency of foaming agent usage. In the method of the invention the point of insertion of aqu...
11/04/1997
5632848Continuous processing equipment for making fiberboard
A continuous manufacturing line for preparing gypsum fiberboard is provided. The manufacturing line includes equipment for admixing hydratable gypsum, paper, and a quantity of water to form a substantially homogenous slurry, dewatering apparatus for remov...
05/27/1997
5498309Apparatus for continuously producing plates having a structured surface
Particle boards having at least one surface made of a resin impregnated paper web are provided during their production with a surface structure due to the fact that a glass sphere blasted surface structure is provided for in the pressing surface of a doub...
03/12/1996
5472551Apparatus for producing plate-shaped bodies made of a mixture of plaster and fibrous materials
The invention is directed to an apparatus for the production of plate-sha bodies from a mixture of plaster and fibrous materials. The apparatus has a conveying means, spreading means, a first and second press, an afterwetting station and a setting and dr...
12/05/1995
5256222Lightweight building material board
A lightweight wallboard having a density in the range of 10 pcf to 30 pcf and comprised of a faced layer of expanded siliceous inorganic particles, such as expanded perlite, bonded together by inorganic binder, such as sodium silicate. The board is made b...
10/26/1993
4488917Method for making cement board
Mortar is deflected continuously onto a moving carrier sheet from a distributor belt which is moving transversely to the carrier sheet by a plow which shuttles across the length of the distributor belt. An uninterrupted flow of mortar is spread across the...
12/18/1984
4450022Method and apparatus for making reinforced cement board
A network of reinforcing fibers is pressed against the surface of an underlying carrier sheet by the weight of a concrete mix. A vertical gap between the sheet and the network is created so that the concrete mix may penetrate the voids of the network and ...
05/22/1984
4420295Apparatus for manufacturing cementitious reinforced panels
Reinforced facings, including reinforcing webs entrained in hydraulic cement via a slurry bath, adhere to a nailable lightweight aggregate cementitious core to form a panel web. The reinforced web is formed on abutting conveyed carrier sheets, and the web...
12/13/1983
4364790Apparatus for making plaster board
The present invention is concerned with manufacturing board from a fluid evolutive product, such as a plaster and water mixture. The process comprises pouring upon a conveyor a fluid evolutive product, such as a plaster and water mixture, contained in sto...
12/21/1982
4057443Foamed gypsum wallboard
Lightweight gypsum wallboard produced by continuously combining a small amount of surface active agent with a liquid stream which stream is made up of substantially all of the liquids to be used in the manufacture of a continuous web of gypsum wallboard, ...
11/08/1977
 
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