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7579136 |
Microfluidic device and method of manufacturing the same
Provided is a method of manufacturing a microfluidic device in which coating film patterns made of a coupling agent are formed in microchannels. The method includes: forming the coating film...
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7470338 |
Process for forming dense layers in a gypsum slurry
A process for manufacturing plasterboard and a plasterboard manufacturing unit are provided, the process including feeding hydratable calcium sulphate and water into a first mixer ( 2 ) and into a...
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7431783 |
Method and apparatus for production of plaster plates having 4 tapered edges
A method for producing plaster plates ( 44 ), according to which two fine cardboard-covered sheets of paper ( 8, 9 ) enclose a plaster-based hydraulic binder ( 10 ) in a shaping device ( 13 ),...
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7220329 |
Method 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...
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6773822 |
Antifungal gypsum board
A novel gypsum board having antifungal properties is disclosed. The board comprises a gypsum core, front and back paper facings and an antifungal agent effective at inhibiting fungal growth. A...
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6767647 |
Antimicrobial wallboard
A gypsum wallboard that exhibits antimicrobial characteristics is disclosed. A method for making the wallboard is also disclosed. Suitable antimicrobial agents that may be applied to the wallboard...
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6632550 |
Gypsum-containing product having increased resistance to permanent deformation and method and composition for producing it
The invention provides a set gypsum-containing product having increased resistance to permanent deformation and a method for preparing it comprising forming a mixture of a calcium sulfate material,...
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6547901 |
Reinforced plasterboard
A reinforced plasterboard has a first layer of paper, a core of a cementitious material, a mesh reinforcement and adjacent to that mesh reinforcement a further layer of paper. The mesh may be in...
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6508895 |
Method of producing gypsum/fiber board
A gypsum/fiber board having improved impact resistance is produced by mixing predetermined amounts of fibers, calcined gypsum and water to form a mixture of wetted, loose fibers; laying out a...
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6488792 |
Method 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...
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6475313 |
Process for making gypsum board having improved through-penetration strength
This invention relates to a process for making gypsum board comprising feeding a paper backing sheet and a fiberglass or plastic woven or non-woven scrim material in alignment to a board forming...
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6391131 |
Method of making glass fiber facing sheet
The invention provides a glass fiber facing sheet for engineered surfaces such as cement boards which reduces the pitting associated with open mesh glass scrims. The glass fiber facing sheet...
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6190476 |
Gypsum 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...
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6153040 |
Gypsum board paper that reduces roll up during lamination, and board comprising such paper
A process for reducing rollups in gypsum board panels when the panels are laminated with a laminate, is provided. A laminator is provided, as is at least one gypsum board panel, each panel having a...
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5962119 |
Gypsum wallboard and process of making same
A process for continuously manufacturing gypsum board having a gypsum core and at least one fibrous cover sheet comprising: (A) applying a defoaming agent to the top surface of the fibrous sheet as...
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5879486 |
Methods of manufacturing gypsum board and board made therefrom
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...
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5718797 |
Apparatus 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...
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5531946 |
Process for the production of staff panels according to a semidry method and installation for implementing the process
Production of plasterboard includes spreading of a mixture formed of gyps fibers and water onto a continuously moving belt to form a spread layer subsequently precompressed to 110% to 180% of a...
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5510198 |
Re-usable cement forms
This invention relates to a panel of material comprising a film comprising a layer of a solid polyolefin and a layer of copolyester wherein said copolyester comprises: (1) a dicarboxylic acid...
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5368663 |
Process for producing plate-shaped bodies made of a mixture of plaster and fibrous materials and installation for implementing
Plasterboard is made by first spreading a mixture of plaster, fibers and er and then pressing this moist mixture to form the raw board. The upper and lower surfaces of the raw board are then wetted...
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5264057 |
Process for the production of a flame resistant to nonflammable composite panel and apparatus for carrying out the process
A flame resistant to nonflammable composite panel is produced from a nonextrudable core mixture with a pourable, nonflammable filling material and a binder, and on both sides cover strips flexibly...
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5202174 |
Lay-in ceiling panel
A lay-in ceiling panel structure, comprising a glass fiber ply, a gypsum board, and a highly perforated vinyl lamina. The ceiling panel structure having noise and sound transmission reduction...
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5151130 |
Amine-based consistency reducers for gypsum stucco slurries
A method for reducing the consistency of a water and gypsum stucco slurry comprising admixing water, stucco, and an additive, the additive in an amount effective to reduce the consistency of the...
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5076978 |
Method of producing gypsum decorative molding
Decorative interior molding is molded from a slurry of gypsum, water, perlite, and a foaming agent. The slurry is surrounded by paper, cured, and dried.
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4994113 |
Mixture for the preparation of building materials
A mixture of waste, essentially cellulosic material and a fire proofing solution can be used to make building materials with exceptional qualities. These qualities include fire proofing, vermin...
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4816091 |
Method and apparatus for producing reinforced cementious panel webs
A method is described for the continuous production of glass fiber mesh reinforced concrete panels consisting of a layer of light weight concrete core mix bonded to a web of glass fiber mesh on...
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4631097 |
Embossed gypsum board
Predecorated gypsum board having an embossed design extending into the paper-covered front face and a utilitarian embossing extending into the paper-covered back face, preferably formed by...
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4557799 |
Tomato consistency control apparatus
An apparatus for manufacturing tomato products to an established consistency standard by providing a concentrator having a tomato feedstock input means, means to circulate the material within the...
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RE32037 |
Methods 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...
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4544424 |
Gypsum board manufacturing method
Described is a novel gypsum board and a manufacturing method therefor by first forming a particulate layer securely adhered to the base paper for the gypsum board and by utilizing an adhesion layer...
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4477300 |
Cementitious board manufacture
In the manufacture of cementitious board by depositing a slurry of hydraulic cementitious material, commonly gypsum plaster, between two facing sheets and forming it to the desired width and...
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4447498 |
Use of organopolysiloxanes in the manufacture of paper-coated plaster boards
Use of an organopolysiloxane having the formula ##STR1## in which R 1 is an alkyl or aryl radical, at least 80% of the R 1 radicals being alkyl radicals, R 2 is an alkyl radical or the R 4 Z...
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4406738 |
Use of an organopolysiloxane preparation for the treatment of paper for the production of plaster boards
An organopolysiloxane suitable for use in treating paper to be used in plaster boards. The organopolysiloxane is obtained by reacting a polysiloxanol of the formula ##STR1## in which R 1 is a...
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4327146 |
High density interface gypsum board and method for making same
A gypsum wallboard, and the method of manufacture, wherein a defoamer is disposed at the gypsum-paper interface during manufacture, causing the foam, present in the core forming gypsum slurry, to...
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4242406 |
Fiber reinforced composite structural laminate composed of two layers tied to one another by embedded fibers bridging both layers
This invention relates to a structural laminate having a plastic surface finish coat laminated to a structural base which has exceptional bond strength between the structural base and the plastic...
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4195109 |
Polymeric adhesive-coated paper and gypsum wallboard prepared therewith
A composition comprising an aqueous suspension of a polymeric adhesive composition such as a latex or emulsion is coated on a paper cover sheet in a selective pattern such that the composition is...
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4187130 |
Method for producing shaped glass fiber reinforced gypsum articles
A method for forming shaped articles from glass fiber reinforced gypsum. An aqueous slurry of calcium sulfate hemihydrate, water and glass fibers contains between 22 and 45 parts by weight water,...
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4187275 |
Method and apparatus for producing shaped glass fiber reinforced cementitious articles
A method and apparatus for forming shaped articles from glass fiber reinforced gypsum. An aqueous slurry of gypsum hemi-hydrate, water and glass fibers contains between 22 and 45 parts by weight...
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4128699 |
Treated gypsum wallboard paper
Drying oils are used to improve strength and durability characteristics of gypsum wallboard paper with many unexpected additional advantages. Applied before board manufacture, critical porosity...
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4119752 |
Gypsum wallboard-making process and product
A specially prepared paper bond liner, gypsum wallboard, and gypsum wallboard process which bonds the liner to the core by an adhesive confined to the paper-core interface, the adhesive comprising...
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4117183 |
Starch-coated paper and gypsum wallboard prepared therewith
A composition comprising water, finely particulate gypsum and starch is coated on a paper cover sheet in a selective pattern such that the starch composition is disposed only at limited areas of...
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4063976 |
Plasterboard manufacture
Satisfactory or enhanced dry bond between the gypsum core of plasterboard and paper facing sheets is achieved by treatment of at least the inner faces of the paper sheets with a water soluble...
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4057662 |
Block-resistant gypsum board
A predecorated printed paper on the gypsum wallboard with a clear washable coating over the printed paper, and having a thin coating of polyethylene emulsion on the back paper which overcomes the...
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4051291 |
Gypsum wallboard
A specially prepared paper bond liner, gypsum wallboard, and gypsum wallboard process which bonds the liner to the core by an adhesive confined to the paper-core interface, the adhesive comprising...
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3984269 |
Accelerated drywall joint treatment
In the application of a plurality of layers of a settable joint compound over a reinforcing tape, in drywall construction, a thin coat of Al 2 SO 4 is sprayed over the tape and the board edges...
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3941632 |
Method and composition for applying a covering to a wall or like substrate
Method and composition for applying a surface covering to a wall or like substrate. The surface covering comprises a flexible strip or sheet of substantially dry, semi-hydrated gypsum, bonded to a...
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3940541 |
Method for the production of a decorative gypsum board
In the production of decorative gypsum board, wherein a hemihydrate gypsum slurry is continuously injected between decorative gypsum board card paper and conventional gypsum board card paper and...
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3887406 |
Production of building board
The invention relates to the reinforcement of the edges of cementitious board and especially plasterboard. Reinforcing strips are secured to at least one edge of the lower sheet employed in the...
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3607486 |
A PROCESS FOR MAKING WATER REPELLENT PAPER AND GYPSUM SHEATHING BOARD AND A COATING COMPOSITION USEFUL THEREIN
A method for making vapor permeable, water repellent paper having one surface treated with water repellent bituminous material and an opposite surface substantially free of water repellent material...
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3507684 |
METHOD OF MAKING DECORATED WALLBOARD
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