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Publication numberUS3289371 A
Publication typeGrant
Publication dateDec 6, 1966
Filing dateSep 1, 1961
Priority dateSep 1, 1961
Publication numberUS 3289371 A, US 3289371A, US-A-3289371, US3289371 A, US3289371A
InventorsArthur J Pearson, Homer W Duffee
Original AssigneeOwens Corning Fiberglass Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Reinforced composites and method for producing the same
US 3289371 A
Abstract  available in
Images(3)
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Claims  available in
Description  (OCR text may contain errors)

em. 6, 11966 A. J. PEARSON ETAL 3,289,371

REINFORCED COMPOSITES AND METHOD FOR PRODUCING THE SAME Filed Sept. 1, 1961 L5 SheetsSheet l JNVENTORS' ARTHUR J. Emma/v & BY HOMER MA Dal-"FEE AT TOR/V5 Y5 Dec, 3%6 A. J. PEARSON ETAL. Q W

REINFORCED COMPOSITES AND METHOD FOR PRODUCING THE SAME Filed Sept. 1. 1961 5 Sheets-Sheet 2 INVENTORS fifi'iwul? J fz/msm/ & WHO/WEI? m DUFFEE @Wtd I Q fig W56 A. J. PEARSON ETAL 3,2%9,37R

REINFORCED COMPOSITES AND METHOD FOR PRODUCING THE SAME Filed Sept. 1. 1961 S5 Sheets-Sheet 3 INVENTORS ARTHUR J. Pmmsom & BY HOME/Q MA Bur/ 55 United States Patent Ofiice A 3,289,371 Patented Dec. 6, 1966 3,289,371 REINFORCED COMPQSITES AND METHOD FOR PRQDUCING THE SAME Arthur J. Pearson, Granville, and Homer W. Dutfee, Newark, Ohio, assignors to Owens-Corning Fiberglas Corporation, a corporation of Delaware Filed Sept. l, 1961, Ser. No. 135,616 4 Claims. (Cl. 52338) This invention relates to the production of structural materials from gypsum and more particularly to the production of reinforced materials therefrom having improved strength, modulus, and resistance to cracking.

In recent years, gypsum has found increasing popularity as a structural material both in the form of rock lath to be used as a plaster base and as a finished wallboard for the socalled drywall construction. Poured gypsum has found increasing use as a structural material as for the roof decking for large buildings such as factories and schools. Gypsum decks are generally installed by first placing a suitable supporting deck of formboard on the supporting purlins of the building and simply pouring the gypsum, which may be slightly foamed to give it a lower density, over the formboard and purlins in the same manner a sidewalk is poured in place. It is then screeded to the proper depth, smoothed by lightly troweling and dried in place to form the gypsum deck. This ease of installation, combined with good compressive strength, have combined to make poured in place gypsum one of the most popular building materials for roofing. However, it possesses Very little tensile strength and for this reason it can be used only when a suitable supporting member is placed beneath the entire deck or when it is adequately reinforced. It is common practice to place a heavy, open mesh woven wire cloth over the entire deck before the gypsum is poured in place to reinforce it and aid in providing the essential tensile strength.

A major deficiency of this type of poured in place gypsum deck has been a pronounced tendency to craze and crack. This cracking weakens the deck and stresses the roofing material thereabove, inducing failures and leaking in it.

It has been found that this tendency of a poured in place gypsum deck to crack can be materially reduced by incorporating reinforcing glass filaments, strands and yarns therein. While the reinforcing action of these fibers is not sufiicient to offset structural defects in the building resulting from improper design they will help compensate for thermal stresses and temporary overloading. The fibers may be evenly dispersed throughout the gypsum to form a continuous reinforcement but preferably they are concentrated in the upper stratum to more effectively prevent cracking of the gypsum surface and the resulting failure of the roofing material.

Trials with this type of reinforcing wherein short lengths of chopped glass filaments were added in the mixing tank were unsuccessful because when passing through the pumps on the way to the pouring nozzle the lengths of glass fibers will agglomerate and tend to clog the pumps. In order to overcome these difiiculties, this invention provides a method for pouring an improved reinforced gypsum deck wherein the glass fibers are mixed with the gypsum slurry after it has passed the last pump so that this agglomeration of the glass fibers at the pump will not occur. Further, this invention provides a poured in place gypsum deck wherein the glass fibers are selectively placed in the gypsum to most eifectively resist crazing and cracking.

An object of this invention is to provide an improved reinforced gypsum deck.

A further object of this invention is to provide a method and apparatus for mixing and pouring a slurry of gypsum and unagglomerated reinforcing glass fibers.

A further object of this invention is to provide a crack resistant gypsum deck having only a small percentage of glass fibers selectively placed, therein.

A further object of this invention is to provide a poured in place gypsum deck having a crack resistant, fibrous glass reinforced surface.

Another object of this invention is to produce an improved gypsum wallboard.

Another object of this invention is to provide a gypsum wallboard having glass fiber reinforced surfaces.

Other objects and advantages of this invention will become apparent from the following specification and drawings in which:

FIGURE 1 is a side elevational view illustrating the pouring of a glass fiber reinforced gypsum deck built in accordance with this invention,

FIGURE 2 illustrates a completed gypsum deck built in accordance with this invention and covered with a suitable waterproof membrane,

FIGURE 3 illustrates a gypsum deck built in accordance with this invention wherein only the upper strata of the deck is reinforced with glass fibers,

FIGURE 4 illustrates a reinforced gypsum deck built in accordance with this invention wherein continuous glass yarns are embedded in the upper surface of the gypsum to prevent cracking and crazing thereof.

FIGURE 5 illustrates a reinforced gypsum deck built in accordance with this invention having a large open weave reinforcing cloth of glass filaments embedded in the upper surface of the gypsum,

FIGURE 6 is a section view of a lightweight reinforced gypsum deck built in accordance with this invention, 1

FIGURE 7 illustrates a nozzle for pouring a reinforced gypsum deck according to this invention wherein the reinforcing fibers are mixed with the gypsum interiorly of the nozzle.

FIGURE 8 illustrates a nozzle for pouring a reinforced gypsum deck according to this invention wherein the reinforcing fibers are mixed with the gypsum exteriorly of the nozzle,

FIGURE 9 illustrates a nozzle for producing a reinforced gypsum deck according to this invention wherein the reinforcing glass fibers are mixed with the gypsum as it flows from the nozzle to the deck,

FIGURE 10 illustrates a process according to this invention for producing a gypsum wallboard having its surfaces reinforced with short lengths of glass fibers,

FIGURE 11 illustrates the production of a glass filament reinforced gypsum wallboard wherein the continuous glass filaments are continuously incorporated into the surfaces of the wallboard while it is being produced.

Referring in greater detail to FIGURE 1, a roof deck is. constructed in accordance with this invention by first installing the main supporting purlins 9 in place. Subpurlins 10 are welded to the main supporting purlins and suitable formboards 11 or other material are laid therebetween. These formboards are supported by the flanges extending horizontally from the bottom edge of the sub-purlins and form the supporting base for the gypsum slurry. A heavy open metal mesh reinforcing screen 12 is laid over the sub-purlins and formboards. Wet gypsum slurry 14 from a pouring nozzle 15 is poured onto the formboard and flows through and around the metal reinforcing screen. Reinforcing glass fibers 16 are mixed with the flowing gypsum slurry or are sprinkled onto the wet surface of the gypsum and pressed or rolled into it. Glass reinforcing fibers are normally produced by attenuating a plurality of fine filaments, coating them with a suitable sizing material and gathering the sized filaments into a multifilament strand. This multifilament strand is use-d as the reinforcing material for the gypsum or it is chopped to form short lengths of reinforcing material. If a water soluble sizing is used to hold the filaments into a strand, it will be dissolved when it is mixed with the gypsum slurry and break up into individual reinforcing fibers. By utilizing an insoluble size to bind the filaments together, the strand will be the elemental reinforcing material and a stronger, stiffer gypsum composite will be formed.

FIGURE 2 illustrates a completed reinforced gypsum deck in which chopped glass strands have been incorporated to reinforce it. The completed deck has an open mesh wire cloth 12 extending almost continuously throughout to impart to the gypsum deck suflicient structural strength to withstand the loads imposed on it by snow, etc., thereabove. Short lengths of glass fiber strands 16 are mixed with the gypsum and dispersed throughout it. These short bundles of filaments reinforce the gypsum by functioning a discontinuous web of reinforcing material and prevent the enlargement and propagation small cracks and fissures resulting from localized over stressing of the deck. A suitable Waterproof roofing membrane 18 such as multiple layers of a roofing felt and asphalt is adhered to the top of the gypsum deck. The chopped strand reinforcing intersects the crystal boundaries of the gypsum and ties them together. The resulting reduction in cracking of the gypsum deck reduces the stresses on the waterproofing membrane and reduces the cracking and leaking thereof.

Often when pouring a gypsum deck, a first layer of gypsum slurry will be poured and scree-ded to a depth of about two-thirds the depth of the completed deck. After this first layer has at least partially dried, a second layer or cap of gypsum is poured. This invention provides an improved crack resistant poured-in-place gypsum deck wherein only this second layer or cap is reinforced with short lengths of glass fibers. As illustrated in FIG- URE 3, a first layer of gypsum slurry 13 is poured over the sub-purlins 10, formboard 11, and metal mesh reinforcing 12. A cap 19 of gypsum reinforced with short bundles of glass filaments is applied thereover. This cap of reinforced gypsum may be applied by mixing the reinforcing fibers with the gypsum at the pouring nozzle, as illustrated in FIGURE 1, or it may be sprayed on by simultaneously spraying the short lengths of fibers and gypsum slurry from separate spray nozzles such as a Rand type gun onto the deck. With this construction, although the lower unreinforced layer of gypsum may crack, the upper reinforced stratum will tend to remain as an integral sheet.

In warmer climates, where the expansion and contraction of the gypsum deck resulting from temperature changes are minimized, a deck with only a surface reinforcing, as illustrated in FIGURE 4, is often satisfactory. To produce this type of deck, the gypsum slurry is poured to the desired depth and the reinforcing fibers are sprayed thereover. During the subsequent screeding operation the reinforcing fibers are worked into the surface of the gypsum. Also, the reinforcing fibers may be sprayed onto the Wet gypsum surface after the screeding operation and subsequently pressed or rolled into the gypsum. Short lengths of glass strands may be used for this type of reinforcing, but it is preferred that continuous reinforcing strands 21 be sprayed onto the freshly poured gypsum deck 20.

FIGURE shows another improved reinforced gypsum deck wherein a rather open weave glass cloth or scrim 22 is embedded in the upper surface of the freshly poured gypsum deck. This scrim or cloth is preferably laid onto the wet gypsum surface after it has been screeded to depth and then rolled or troweled into the surface.

FIGURE 6 illustrates in cross section an improved lightweight reinforced gypsum deck. While the gypsum slurry is being prepared by mixing the powdered gypsum with water, pellets 24 of glass foam having a diameter up to about the size of walnuts or golf balls, are mixed with slurry. These pellets become dispersed throughout the slurry and are poured as an integral part of the deck. These pellets may constitute as much of the deck as 50% by volume and as they are majorly cellular in nature and open on the inside the apparent density of the completed deck is considerably reduced. The glass fiber reinforcement is mixed with this glass foam pellet extended gypsum slurry at the pouring nozzle. The mixing of the glass fiber reinforcement 25 is preferably regulated so that a greater concentration of glass fibers will be positioned in the upper strata of the deck to better reinforce it. The entrapped air in the glass foam pellets, in addition to lowering the apparent density of the gypsum deck will lower the thermal conductivity of the composite. Further, the glass foam pellets have a lower coeificient of thermal expansion than the gypsum. Therefore, the tendency of the deck to expand and contract with changes in temperature will be reduced resulting in a more crack resistant deck. The glass fibers scattered throughout the deck will further enhance its crack resistance and by concentrating a greater percentage of fibers in the surface, its impact resistance is greatly improved as well as its strength and resistance to cracking.

FIGURE 7 illustrates a nozzle 30 for producing a glass fiber reinforced poured in place gypsum deck wherein the fibers, either chopped or continuous, are introduced into the stream of gypsum through an interior nozzle 31 immediately before the gypsum slurry exits from the pouring nozzle. In this way the glass fibers are mixed integrally with the gypsum slurry and are flowed therewith over the entire deck. By adjusting the position of the interior nozzle 31 through which the glass fibers are added to the 1g psum the distribution of the reinforcing fibers within the completed gypsum deck can be regulated.

FIGURE 8 illustrates the addition of the glass fibers to the gypsum slurry exteriorly of the pouring nozzle 40. A suitable guide 42 for the glass reinforcing fibers is attached to the pouring nozzle by a brace 44. It extends into the stream of gypsum slurry 41 and releases the reinforcing fibers interiorly of the stream of slurry. The rate the reinforcing fibers are fed through the guide is adjusted so that the proper percentage of fibers is added to produce the most desirable mixture of fibers and gypsum. Additional fiber guides may be fastened to the nozzle 40 to add larger quantities of fibers to the stream of slurry.

FIGURE 9 illustrates another arrangement of the reinforcing fiber supply guides for adding the reinforcing strands of glass filaments to the gypsum slurry. A plurality of reinforcing fiber supply guides 45 are attached to the gypsum supply nozzle 45 by suitable braces 47. Glass strands 48 are fed through the fiber supply guides and deposited on the stream of gypsum slurry 49. When a pair of reinforcing fiber supply guides are utilized they are most advantageously arranged vertically so that the fibers from one guide are deposited beneath the gypsum slurry and the fibers from the other guide are deposited therea'bove. In this way, the fibers from the lower guide are thoroughly covered and mixed with the gypsum slurry while the fibers from the upper guide fall onto the stream of slurry and are mixed therewith by the rolling action of the slurry when it impinges against the deck. The major portion of the fibers from the upper supply guide will be concentrated in the upper strata of the deck. Normally about A20% by weight of reinforcing strands are used with the preferred compositions containing about /25% reinforcement. The gypsum slurry shown in FIGURE 9 also has pellets 50 of glass foam in it for improved thermal conductivity.

As illustrated in FIGURE 10, the reinforced gypsum wallboard of this invention is produced by withdrawing a continuous roving from a package 61, cutting it into short lengths with a suitable chopper 62 and depositing the short lengths of reinforcing strand 64 rather uniformly on a sheet of kraft paper.

A slurry of gypsum and Water with suitable additives, extenders, such as pellets of glass foam, sawdust, and silicones for improved water resistance is prepared in a headbox 66. This slurry 68 is dumped from the head .box on the paper and reinforcing strands. A guide 69 screeds the slurry to the desired thickness and additional short lengths of reinforcing strands 70- are deposited on the 'wet slurry to reinforce the upper surface of the finished Wallboard. A guide shoe 71 folds the edge of the paper up to retain the slurry and another sheet of kraft paper 72 is placed on top of the slurry and adhered to the bottom sheet 65. A roller 74 forces the upper paper 72 against the top of the slurry and embeds the reinforcing fibers 70 therein. The paper faced slurry is carried through a curing oven 75 wherein the slurry is cured to a rigid board and the excess water is removed. The cured composite is cut to the desired length by a rotary saw 76 driven by an appropriate motor 78. The cut lengths are then packaged for shipment.

Continuous reinforcing strands can be used in place of the cut strands, shown in FIGURE 10. As illustrated in FIGURE 11, continuous reinforcing strands 80 are deposited on the kraft paper that forms one side of the completed Wallboard. These continuous reinforcing strands are preferably attenuated directly from a suitable supply of molten glass by the attenuating wheels 81. However, they may also be withdrawn from other suitable strand supply sources such as packages of rovings or yarns. Additional reinforcing strands are deposited on the Wet slurry after it has been screeded to the desired depth to reinforce the upper surface. The continuous reinforcing strands will provide a more integral reinforcement and generally a stronger wallboard, than the chopped strands.

Although this invention was described in relation to the production of a poured in place reinforced gypsum deck the principles described herein are applicable to the construction of other materials, sidewalks, protective shields over pipe lines, etc. Also, it has often proven advantageous to utilize glass 'wool fibers wherein the 'b att of Wool is cut into short (one quarter to five inch) lengths and then shredded to separate single fibers and incorporating the single fibers into the gypsum slurry. These glass fibers help maintain the integrity of the gypsum composite when it is subjected to high temperatures such as :a fire and being dehydrated.

It is understood that numerous changes may be made in the type of glass fiber reinforcement and the method or order of its application to the slurry without departing from the spirit of this invention, especially as defined in the following claims.

We claim:

1. A gypsum deck having a reinforced upper surface comprising:

supporting members,

a base for said gypsum deck extending between said supporting members,

a layer of gypsum covering said supporting members and base,

glass fibers distributed and embedded in a relatively thin region at the exposed surface of said gypsum in sufiicient concentration as reinforcement to impart strength to said surface against cracking.

2. The gypsum deck of claim 1 Wherein said continuous reinforcing fibers are in the form of an open weave cloth.

3. A reinforced gypsum deck comprising:

a base for said gypsum,

a primary layer of gypsum covering said base,

a relatively thin exposed surface layer of gypsum overlying the primary layer,

reinforcing glass fibers distributed through the exposed surface layer in sufficient concentration to impart stress resistance against the formation of cracks in the surface region of said deck.

4. process for producing a reinforced gypsum deck comprising:

forming a slurry of gypsum and water,

flowing said slurry into a continuous layer over a supporting substrate,

depositing reinforcing glass fibers on the surface of the layer of gypsum while said gypsum is still in a soft condition,

said fibers being deposited in sufiicient quantity and concentration to impart strength against surface cracking after the deck hardens,

screedin-g the slurry, and

simultaneously embedding said reinforcing fibers into the surface of said slurry while said slurry is being leveled to a desired depth.

References Cited by the Examiner UNITED STATES PATENTS 1,398,079 11/1921 Marks 52-338 1,674,628 6/ 1928 Ashenhurst 52-328 1,763,469 6/1930 Lane 15445.9 1,804,389 5/1931 Ellis 941.5 1,864,025 6/1932 Martin 52338 2,174,581 10/1939 Ho'ge 52338 2,233,054 2/1941 Heeren 52-338 2,330,810 10/1943 Crandell 15445.9 2,425,883v 8/1947 Jackson 52-309 2,614,058 10/1952 Francis.

2,773,287 12/ 1956- Stout.

2,836,529 5/1958 Morris 52-309 2,981,308 4/1961 Thompson 52-309 3,084,088 4/ 1963 Hunkeler 264-309 X OTHER REFERENCES American Builder, October 1953, pp. 158-159.

FRANK L. ABBOTT, Primary Examiner.

JACOB L. NACKENOFF, HENRY C. SUTHERLAND,

Examiners.

J. L. RIDGILL, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1398079 *Aug 31, 1920Nov 22, 1921Marks Herbert ERoof structure
US1674628 *Feb 16, 1925Jun 26, 1928Insulex CorpFloor fill and method of installing the same
US1763469 *Feb 9, 1928Jun 10, 1930Louis LaneFlat asbestos-cement roof and wall sheet
US1804389 *Oct 15, 1924May 12, 1931Chadeloid Chemical CoDelineated area
US1864025 *Nov 18, 1926Jun 21, 1932Anchor Fireproofing CompanyRoof and floor construction
US2174581 *Nov 4, 1937Oct 3, 1939Lathrop Hoge Gypsum ConstructiRoof and floor construction
US2233054 *May 27, 1939Feb 25, 1941United States Gypsum CoBuilding structure
US2330810 *Dec 19, 1941Oct 5, 1943Nat Gypsum CoPlasterboard faced with lightweight paper
US2425883 *Aug 8, 1941Aug 19, 1947John G JacksonConcrete structural element reinforced with glass filaments
US2614058 *Jun 3, 1948Oct 14, 1952Richard J FrancisMethods of forming reinforced hollow plastic articles
US2773287 *Jul 14, 1952Dec 11, 1956William H StoutMethod of manufacturing plastic pipe
US2836529 *May 3, 1954May 27, 1958Hugh Adam KirkReinforced plastic
US2981308 *Jan 31, 1958Apr 25, 1961George F SheaApparatus for producing reinforced plastic, resinous or like structural bodies, forms, linings and coatings
US3084088 *Dec 15, 1958Apr 2, 1963Perma Tubes LtdMethod of forming a bituminous coated glass fiber pipe
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3462341 *Jul 16, 1968Aug 19, 1969Owens Corning Fiberglass CorpGypsum wallboard
US4066723 *Mar 19, 1976Jan 3, 1978Caterpillar Tractor Co.Method and apparatus for making fibrous concrete
US4077177 *Feb 12, 1976Mar 7, 1978Boothroyd Rodney LCurved architectural structure of foam and cement
US4150083 *Mar 10, 1976Apr 17, 1979United States Gypsum CompanyContouring gypsum articles
US4154039 *Feb 16, 1977May 15, 1979N. V. Bekaert S.A.Reinforced building structure and method of manufacture
US4192690 *Apr 25, 1977Mar 11, 1980Portland-Zementwerke Heidelberg A.G.Fiber-reinforced hydraulically hardenable shaped objects
US4224377 *Nov 10, 1977Sep 23, 1980N. V. Bekaert S.A.Reinforcing member for castable material and process of mixing reinforcing elements with said material
US4229497 *Nov 3, 1977Oct 21, 1980Maso-Therm CorporationComposite module with reinforced shell
US4239397 *Sep 21, 1978Dec 16, 1980Gote LiljegrenMethod for manufacturing shotcrete structures using a material having high impact resistance and optimum deformation properties
US4242406 *Apr 30, 1979Dec 30, 1980Ppg Industries, Inc.Fiber reinforced composite structural laminate composed of two layers tied to one another by embedded fibers bridging both layers
US4284667 *Jan 18, 1980Aug 18, 1981N. V. Bekaert S. A.Reinforcing member for castable material and process of mixing reinforcing elements with said material
US4293343 *Nov 13, 1979Oct 6, 1981Owens-Corning Fiberglas CorporationMortars and cements having improved freeze-thaw properties and method of achieving same
US4296169 *Feb 4, 1980Oct 20, 1981Owens-Corning Fiberglas CorporationWallboard having improved drying rate due to plural contacting fiber networks
US4307867 *Aug 7, 1980Dec 29, 1981Owens-Corning Fiberglas CorporationMolds for slip-casting and similar processes
US4314853 *Jan 18, 1980Feb 9, 1982N.V. Bekaert S.A.Process of mixing reinforcing elements with castable material
US4364883 *Nov 7, 1980Dec 21, 1982Owens-Corning Fiberglas CorporationCeramic products and method of drying same
US4558550 *Aug 29, 1983Dec 17, 1985Smac AcieroidInsulating and fluidtight roof covering
US4558552 *Jul 8, 1983Dec 17, 1985Reitter Stucco, Inc.Building panel and process for making
US4810569 *Mar 2, 1987Mar 7, 1989Georgia-Pacific CorporationFibrous mat-faced gypsum board
US4811538 *Oct 20, 1987Mar 14, 1989Georgia-Pacific CorporationFire-resistant door
US5220765 *Dec 4, 1991Jun 22, 1993Kubik Leszek ASpace frame structure
US5319900 *May 6, 1993Jun 14, 1994Georgia-Pacific CorporationFinishing and roof deck systems containing fibrous mat-faced gypsum boards
US5342680 *Oct 15, 1993Aug 30, 1994Georgia-Pacific CorporationGlass mat with reinforcing binder
US5371989 *Feb 19, 1992Dec 13, 1994Georgia-Pacific CorporationUse of fibrous mat-faced gypsum board in exterior finishing systems for buildings and shaft wall assemblies
US5397631 *Jul 19, 1993Mar 14, 1995Georgia-Pacific CorporationCoated fibrous mat faced gypsum board resistant to water and humidity
US5644880 *Jun 7, 1995Jul 8, 1997Georgia-Pacific CorporationGypsum board and systems containing same
US5674336 *Oct 28, 1994Oct 7, 1997Coe; William B.Method of installing a fully adhered roofing membrane
US5704179 *Jan 26, 1994Jan 6, 1998Georgia-Pacific CorporationFinishing and roof deck systems containing fibrous mat-faced gypsum boards
US5718785 *Aug 29, 1994Feb 17, 1998Georgia-Pacific CorporationGlass mat with reinforcing binder
US5741589 *Mar 28, 1996Apr 21, 1998The Forestry And Forest Products Research InstiuteConstruction material made of woody material and mortar
US5791109 *Nov 6, 1996Aug 11, 1998Georgia-Pacific CorporationGypsum board and finishing system containing same
US5840226 *Apr 9, 1997Nov 24, 1998The Forestry And Forest Products Research InstituteManufacturing method for a construction material made of woody material and mortar
US5981406 *Jan 23, 1998Nov 9, 1999G-P Gypsum CorporationGlass mat with reinforcing binder
US6010585 *Apr 9, 1997Jan 4, 2000The Forestry And Forest Products Research InstituteManufacturing apparatus for a construction material made of woody material and mortar
US6562430Feb 10, 2000May 13, 2003W.R. Grace & Co.-ConnPacketing fibers for castable compositions
US6740395Dec 21, 2001May 25, 2004United States Gypsum CompanySubstrate smoothed by coating with gypsum-containing composition and method of making
US7028436Nov 5, 2002Apr 18, 2006Certainteed CorporationCementitious exterior sheathing product with rigid support member
US7049251Jan 21, 2003May 23, 2006Saint-Gobain Technical Fabrics Canada LtdFacing material with controlled porosity for construction boards
US7155866Jan 15, 2003Jan 2, 2007Certainteed CorporationCementitious exterior sheathing product having improved interlaminar bond strength
US7300515Nov 16, 2005Nov 27, 2007Saint-Gobain Technical Fabrics Canada, LtdFacing material with controlled porosity for construction boards
US7300892Nov 16, 2005Nov 27, 2007Saint-Gobain Technical Fabrics Canada, Ltd.Facing material with controlled porosity for construction boards
US7445738 *Sep 18, 2003Nov 4, 2008United States Gypsum CompanyMulti-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels
US7513768Nov 1, 2006Apr 7, 2009United States Gypsum CompanyEmbedment roll device
US7513963Nov 1, 2006Apr 7, 2009United States Gypsum CompanyMethod for wet mixing cementitious slurry for fiber-reinforced structural cement panels
US7524386Nov 1, 2006Apr 28, 2009United States Gypsum CompanyMethod for wet mixing cementitious slurry for fiber-reinforced structural cement panels
US7670520 *Nov 1, 2006Mar 2, 2010United States Gypsum CompanyMulti-layer process for producing high strength fiber-reinforced structural cementitious panels with enhanced fiber content
US7712276Mar 30, 2005May 11, 2010Certainteed CorporationMoisture diverting insulated siding panel
US7754052Nov 1, 2006Jul 13, 2010United States Gypsum CompanyProcess and apparatus for feeding cementitious slurry for fiber-reinforced structural cement panels
US7762040Dec 29, 2004Jul 27, 2010Progressive Foam Technologies, Inc.Insulated fiber cement siding
US7789645Jun 5, 2008Sep 7, 2010United States Gypsum CompanyMulti-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels
US7846278Oct 29, 2003Dec 7, 2010Saint-Gobain Technical Fabrics America, Inc.Methods of making smooth reinforced cementitious boards
US7851386 *May 22, 2003Dec 14, 2010Lido Wall Systems Inc.Method and apparatus for coating a decorative workpiece
US7861476Sep 19, 2005Jan 4, 2011Certainteed CorporationCementitious exterior sheathing product with rigid support member
US7908814Dec 29, 2006Mar 22, 2011Progressive Foam Technologies, Inc.Composite siding using a shape molded foam backing member
US8091313Oct 14, 2004Jan 10, 2012Progressive Foam Technologies, Inc.Drainage place for exterior wall product
US8192658Nov 29, 2006Jun 5, 2012Certainteed CorporationCementitious exterior sheathing product having improved interlaminar bond strength
US8225567Dec 28, 2005Jul 24, 2012Exterior Portfolio, LlcSiding having backer with features for drainage, ventilation, and receiving adhesive
US8225573Mar 7, 2011Jul 24, 2012Progressive Foam Technologies, Inc.Composite siding using a shape molded foam backing member
US8495846 *Jul 30, 2003Jul 30, 2013Leonid G. BravinskiFormwork assembly for fabricating composite structures including floor and roof structures
US8499517Jul 20, 2011Aug 6, 2013Progressive Foam Technologies, Inc.Insulated fiber cement siding
US8511030Jul 20, 2011Aug 20, 2013Progressive Foam Technologies, Inc.Insulated fiber cement siding
US8756891Jul 20, 2011Jun 24, 2014Progressive Foam Technologies, Inc.Insulated fiber cement siding
US8795813Feb 22, 2011Aug 5, 2014Exterior Portfolio, LlcRibbed backed panels
US8844233Sep 23, 2011Sep 30, 2014Progressive Foam Technologies, Inc.Foam insulation board with edge sealer
US8910443Sep 23, 2011Dec 16, 2014Progressive Foam Technologies, Inc.Foam backer for insulation
US8910444Sep 23, 2011Dec 16, 2014Progressive Foam Technologies, Inc.Foam insulation backer board
US9017495Nov 10, 2010Apr 28, 2015Saint-Gobain Adfors Canada, Ltd.Methods of making smooth reinforced cementitious boards
US9097024Sep 16, 2014Aug 4, 2015Progressive Foam Technologies Inc.Foam insulation board
US9309678Aug 30, 2011Apr 12, 2016Paul J. MollingerBacked panel and system for connecting backed panels
US9359769Jun 23, 2014Jun 7, 2016Progressive Foam Technologies, Inc.Insulated fiber cement siding
US9428910Aug 1, 2014Aug 30, 2016Royal Building Products (Usa) Inc.Ribbed backed panels
US9434131Sep 2, 2010Sep 6, 2016Plycem Usa, Inc.Building panel having a foam backed fiber cement substrate
US9435124Apr 4, 2012Sep 6, 2016Plycem Usa, Inc.Cementitious exterior sheathing product having improved interlaminar bond strength
US20040033314 *May 22, 2003Feb 19, 2004Angelo RaoMethod and apparatus for coating a decorative workpiece
US20050034418 *Jul 30, 2003Feb 17, 2005Leonid BravinskiMethods and systems for fabricating composite structures including floor and roof structures
US20050064164 *Sep 18, 2003Mar 24, 2005United States Gypsum CompanyMulti-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels
US20050081468 *Oct 14, 2004Apr 21, 2005Progressive Foam Technologies, Inc.Drainage place for exterior wall product
US20070110838 *Nov 1, 2006May 17, 2007Porter Michael JEmbedment roll device
US20070110970 *Nov 1, 2006May 17, 2007Ashish DubeyMulti-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels with enhanced fiber content
US20070142692 *Dec 21, 2005Jun 21, 2007Hall Todd HMethod of refinishing a wall containing lead paint
US20070175154 *Dec 20, 2006Aug 2, 2007Progressive Foam Technologies, Inc.Exterior wall panel with enhanced interior facing surface
US20070193177 *Dec 29, 2006Aug 23, 2007Progressive Foam Technologies, Inc,Composite siding using a shape molded foam backing member
US20080099171 *Nov 1, 2006May 1, 2008United States Gypsum CompanyProcess and apparatus for feeding cementitious slurry for fiber-reinforced structural cement panels
US20080101150 *Nov 1, 2006May 1, 2008United States Gypsum CompanyMethod for wet mixing cementitious slurry for fiber-reinforced structural cement panels
US20100080362 *Sep 30, 2008Apr 1, 2010Avaya Inc.Unified Greeting Service for Telecommunications Events
US20100175341 *Mar 23, 2010Jul 15, 2010Certainteed CorporationMoisture diverting insulated siding panel
CN101512078BJun 25, 2007Aug 8, 2012安德-卡沃公司Interior decoration system
EP1873325B1 *Jun 28, 2006Mar 11, 2009Under-CoverInterior decoration system
WO1999004115A1 *Jul 17, 1998Jan 28, 1999Fritz WiehofskyProduction method and element for inside and outside walls that are to be plastered
Classifications
U.S. Classification52/338, 52/745.5, 264/309, 264/35, 428/703
International ClassificationE04D7/00
Cooperative ClassificationB28C5/404, B28B19/0092, E04D7/00
European ClassificationE04D7/00