|Número de publicación||US3289371 A|
|Tipo de publicación||Concesión|
|Fecha de publicación||6 Dic 1966|
|Fecha de presentación||1 Sep 1961|
|Fecha de prioridad||1 Sep 1961|
|Número de publicación||US 3289371 A, US 3289371A, US-A-3289371, US3289371 A, US3289371A|
|Inventores||Arthur J Pearson, Homer W Duffee|
|Cesionario original||Owens Corning Fiberglass Corp|
|Exportar cita||BiBTeX, EndNote, RefMan|
|Citas de patentes (14), Citada por (89), Clasificaciones (10)|
|Enlaces externos: USPTO, Cesión de USPTO, Espacenet|
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.
1. A gypsum deck having a reinforced upper surface comprising:
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,
J. L. RIDGILL, Assistant Examiner.
|Patente citada||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US1398079 *||31 Ago 1920||22 Nov 1921||Marks Herbert E||Roof structure|
|US1674628 *||16 Feb 1925||26 Jun 1928||Insulex Corp||Floor fill and method of installing the same|
|US1763469 *||9 Feb 1928||10 Jun 1930||Louis Lane||Flat asbestos-cement roof and wall sheet|
|US1804389 *||15 Oct 1924||12 May 1931||Chadeloid Chemical Co||Delineated area|
|US1864025 *||18 Nov 1926||21 Jun 1932||Anchor Fireproofing Company||Roof and floor construction|
|US2174581 *||4 Nov 1937||3 Oct 1939||Lathrop Hoge Gypsum Constructi||Roof and floor construction|
|US2233054 *||27 May 1939||25 Feb 1941||United States Gypsum Co||Building structure|
|US2330810 *||19 Dic 1941||5 Oct 1943||Nat Gypsum Co||Plasterboard faced with lightweight paper|
|US2425883 *||8 Ago 1941||19 Ago 1947||John G Jackson||Concrete structural element reinforced with glass filaments|
|US2614058 *||3 Jun 1948||14 Oct 1952||Richard J Francis||Methods of forming reinforced hollow plastic articles|
|US2773287 *||14 Jul 1952||11 Dic 1956||William H Stout||Method of manufacturing plastic pipe|
|US2836529 *||3 May 1954||27 May 1958||Hugh Adam Kirk||Reinforced plastic|
|US2981308 *||31 Ene 1958||25 Abr 1961||George F Shea||Apparatus for producing reinforced plastic, resinous or like structural bodies, forms, linings and coatings|
|US3084088 *||15 Dic 1958||2 Abr 1963||Perma Tubes Ltd||Method of forming a bituminous coated glass fiber pipe|
|Patente citante||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US3462341 *||16 Jul 1968||19 Ago 1969||Owens Corning Fiberglass Corp||Gypsum wallboard|
|US4066723 *||19 Mar 1976||3 Ene 1978||Caterpillar Tractor Co.||Method and apparatus for making fibrous concrete|
|US4077177 *||12 Feb 1976||7 Mar 1978||Boothroyd Rodney L||Curved architectural structure of foam and cement|
|US4150083 *||10 Mar 1976||17 Abr 1979||United States Gypsum Company||Contouring gypsum articles|
|US4154039 *||16 Feb 1977||15 May 1979||N. V. Bekaert S.A.||Reinforced building structure and method of manufacture|
|US4192690 *||25 Abr 1977||11 Mar 1980||Portland-Zementwerke Heidelberg A.G.||Fiber-reinforced hydraulically hardenable shaped objects|
|US4224377 *||10 Nov 1977||23 Sep 1980||N. V. Bekaert S.A.||Reinforcing member for castable material and process of mixing reinforcing elements with said material|
|US4229497 *||3 Nov 1977||21 Oct 1980||Maso-Therm Corporation||Composite module with reinforced shell|
|US4239397 *||21 Sep 1978||16 Dic 1980||Gote Liljegren||Method for manufacturing shotcrete structures using a material having high impact resistance and optimum deformation properties|
|US4242406 *||30 Abr 1979||30 Dic 1980||Ppg Industries, Inc.||Fiber reinforced composite structural laminate composed of two layers tied to one another by embedded fibers bridging both layers|
|US4284667 *||18 Ene 1980||18 Ago 1981||N. V. Bekaert S. A.||Reinforcing member for castable material and process of mixing reinforcing elements with said material|
|US4293343 *||13 Nov 1979||6 Oct 1981||Owens-Corning Fiberglas Corporation||Mortars and cements having improved freeze-thaw properties and method of achieving same|
|US4296169 *||4 Feb 1980||20 Oct 1981||Owens-Corning Fiberglas Corporation||Wallboard having improved drying rate due to plural contacting fiber networks|
|US4307867 *||7 Ago 1980||29 Dic 1981||Owens-Corning Fiberglas Corporation||Molds for slip-casting and similar processes|
|US4314853 *||18 Ene 1980||9 Feb 1982||N.V. Bekaert S.A.||Process of mixing reinforcing elements with castable material|
|US4364883 *||7 Nov 1980||21 Dic 1982||Owens-Corning Fiberglas Corporation||Ceramic products and method of drying same|
|US4558550 *||29 Ago 1983||17 Dic 1985||Smac Acieroid||Insulating and fluidtight roof covering|
|US4558552 *||8 Jul 1983||17 Dic 1985||Reitter Stucco, Inc.||Building panel and process for making|
|US4810569 *||2 Mar 1987||7 Mar 1989||Georgia-Pacific Corporation||Fibrous mat-faced gypsum board|
|US4811538 *||20 Oct 1987||14 Mar 1989||Georgia-Pacific Corporation||Fire-resistant door|
|US5220765 *||4 Dic 1991||22 Jun 1993||Kubik Leszek A||Space frame structure|
|US5319900 *||6 May 1993||14 Jun 1994||Georgia-Pacific Corporation||Finishing and roof deck systems containing fibrous mat-faced gypsum boards|
|US5342680 *||15 Oct 1993||30 Ago 1994||Georgia-Pacific Corporation||Glass mat with reinforcing binder|
|US5371989 *||19 Feb 1992||13 Dic 1994||Georgia-Pacific Corporation||Use of fibrous mat-faced gypsum board in exterior finishing systems for buildings and shaft wall assemblies|
|US5397631 *||19 Jul 1993||14 Mar 1995||Georgia-Pacific Corporation||Coated fibrous mat faced gypsum board resistant to water and humidity|
|US5644880 *||7 Jun 1995||8 Jul 1997||Georgia-Pacific Corporation||Gypsum board and systems containing same|
|US5674336 *||28 Oct 1994||7 Oct 1997||Coe; William B.||Method of installing a fully adhered roofing membrane|
|US5704179 *||26 Ene 1994||6 Ene 1998||Georgia-Pacific Corporation||Finishing and roof deck systems containing fibrous mat-faced gypsum boards|
|US5718785 *||29 Ago 1994||17 Feb 1998||Georgia-Pacific Corporation||Glass mat with reinforcing binder|
|US5741589 *||28 Mar 1996||21 Abr 1998||The Forestry And Forest Products Research Instiute||Construction material made of woody material and mortar|
|US5791109 *||6 Nov 1996||11 Ago 1998||Georgia-Pacific Corporation||Gypsum board and finishing system containing same|
|US5840226 *||9 Abr 1997||24 Nov 1998||The Forestry And Forest Products Research Institute||Manufacturing method for a construction material made of woody material and mortar|
|US5981406 *||23 Ene 1998||9 Nov 1999||G-P Gypsum Corporation||Glass mat with reinforcing binder|
|US6010585 *||9 Abr 1997||4 Ene 2000||The Forestry And Forest Products Research Institute||Manufacturing apparatus for a construction material made of woody material and mortar|
|US6562430||10 Feb 2000||13 May 2003||W.R. Grace & Co.-Conn||Packeting fibers for castable compositions|
|US6740395||21 Dic 2001||25 May 2004||United States Gypsum Company||Substrate smoothed by coating with gypsum-containing composition and method of making|
|US7028436||5 Nov 2002||18 Abr 2006||Certainteed Corporation||Cementitious exterior sheathing product with rigid support member|
|US7049251||21 Ene 2003||23 May 2006||Saint-Gobain Technical Fabrics Canada Ltd||Facing material with controlled porosity for construction boards|
|US7155866||15 Ene 2003||2 Ene 2007||Certainteed Corporation||Cementitious exterior sheathing product having improved interlaminar bond strength|
|US7300515||16 Nov 2005||27 Nov 2007||Saint-Gobain Technical Fabrics Canada, Ltd||Facing material with controlled porosity for construction boards|
|US7300892||16 Nov 2005||27 Nov 2007||Saint-Gobain Technical Fabrics Canada, Ltd.||Facing material with controlled porosity for construction boards|
|US7445738 *||18 Sep 2003||4 Nov 2008||United States Gypsum Company||Multi-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels|
|US7513768||1 Nov 2006||7 Abr 2009||United States Gypsum Company||Embedment roll device|
|US7513963||1 Nov 2006||7 Abr 2009||United States Gypsum Company||Method for wet mixing cementitious slurry for fiber-reinforced structural cement panels|
|US7524386||1 Nov 2006||28 Abr 2009||United States Gypsum Company||Method for wet mixing cementitious slurry for fiber-reinforced structural cement panels|
|US7670520 *||1 Nov 2006||2 Mar 2010||United States Gypsum Company||Multi-layer process for producing high strength fiber-reinforced structural cementitious panels with enhanced fiber content|
|US7712276||30 Mar 2005||11 May 2010||Certainteed Corporation||Moisture diverting insulated siding panel|
|US7754052||13 Jul 2010||United States Gypsum Company||Process and apparatus for feeding cementitious slurry for fiber-reinforced structural cement panels|
|US7762040||27 Jul 2010||Progressive Foam Technologies, Inc.||Insulated fiber cement siding|
|US7789645||5 Jun 2008||7 Sep 2010||United States Gypsum Company||Multi-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels|
|US7846278||7 Dic 2010||Saint-Gobain Technical Fabrics America, Inc.||Methods of making smooth reinforced cementitious boards|
|US7851386 *||22 May 2003||14 Dic 2010||Lido Wall Systems Inc.||Method and apparatus for coating a decorative workpiece|
|US7861476||19 Sep 2005||4 Ene 2011||Certainteed Corporation||Cementitious exterior sheathing product with rigid support member|
|US7908814||22 Mar 2011||Progressive Foam Technologies, Inc.||Composite siding using a shape molded foam backing member|
|US8091313||10 Ene 2012||Progressive Foam Technologies, Inc.||Drainage place for exterior wall product|
|US8192658||5 Jun 2012||Certainteed Corporation||Cementitious exterior sheathing product having improved interlaminar bond strength|
|US8225567||28 Dic 2005||24 Jul 2012||Exterior Portfolio, Llc||Siding having backer with features for drainage, ventilation, and receiving adhesive|
|US8225573||7 Mar 2011||24 Jul 2012||Progressive Foam Technologies, Inc.||Composite siding using a shape molded foam backing member|
|US8495846 *||30 Jul 2003||30 Jul 2013||Leonid G. Bravinski||Formwork assembly for fabricating composite structures including floor and roof structures|
|US8499517||20 Jul 2011||6 Ago 2013||Progressive Foam Technologies, Inc.||Insulated fiber cement siding|
|US8511030||20 Jul 2011||20 Ago 2013||Progressive Foam Technologies, Inc.||Insulated fiber cement siding|
|US8756891||20 Jul 2011||24 Jun 2014||Progressive Foam Technologies, Inc.||Insulated fiber cement siding|
|US8795813||22 Feb 2011||5 Ago 2014||Exterior Portfolio, Llc||Ribbed backed panels|
|US8844233||23 Sep 2011||30 Sep 2014||Progressive Foam Technologies, Inc.||Foam insulation board with edge sealer|
|US8910443||23 Sep 2011||16 Dic 2014||Progressive Foam Technologies, Inc.||Foam backer for insulation|
|US8910444||23 Sep 2011||16 Dic 2014||Progressive Foam Technologies, Inc.||Foam insulation backer board|
|US9017495||10 Nov 2010||28 Abr 2015||Saint-Gobain Adfors Canada, Ltd.||Methods of making smooth reinforced cementitious boards|
|US9097024||16 Sep 2014||4 Ago 2015||Progressive Foam Technologies Inc.||Foam insulation board|
|US9309678||30 Ago 2011||12 Abr 2016||Paul J. Mollinger||Backed panel and system for connecting backed panels|
|US9359769||23 Jun 2014||7 Jun 2016||Progressive Foam Technologies, Inc.||Insulated fiber cement siding|
|US9428910||1 Ago 2014||30 Ago 2016||Royal Building Products (Usa) Inc.||Ribbed backed panels|
|US9434131||2 Sep 2010||6 Sep 2016||Plycem Usa, Inc.||Building panel having a foam backed fiber cement substrate|
|US9435124||4 Abr 2012||6 Sep 2016||Plycem Usa, Inc.||Cementitious exterior sheathing product having improved interlaminar bond strength|
|US20040033314 *||22 May 2003||19 Feb 2004||Angelo Rao||Method and apparatus for coating a decorative workpiece|
|US20050034418 *||30 Jul 2003||17 Feb 2005||Leonid Bravinski||Methods and systems for fabricating composite structures including floor and roof structures|
|US20050064164 *||18 Sep 2003||24 Mar 2005||United States Gypsum Company||Multi-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels|
|US20050081468 *||14 Oct 2004||21 Abr 2005||Progressive Foam Technologies, Inc.||Drainage place for exterior wall product|
|US20070110838 *||1 Nov 2006||17 May 2007||Porter Michael J||Embedment roll device|
|US20070110970 *||1 Nov 2006||17 May 2007||Ashish Dubey||Multi-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels with enhanced fiber content|
|US20070142692 *||21 Dic 2005||21 Jun 2007||Hall Todd H||Method of refinishing a wall containing lead paint|
|US20070175154 *||20 Dic 2006||2 Ago 2007||Progressive Foam Technologies, Inc.||Exterior wall panel with enhanced interior facing surface|
|US20070193177 *||29 Dic 2006||23 Ago 2007||Progressive Foam Technologies, Inc,||Composite siding using a shape molded foam backing member|
|US20080099171 *||1 Nov 2006||1 May 2008||United States Gypsum Company||Process and apparatus for feeding cementitious slurry for fiber-reinforced structural cement panels|
|US20080101150 *||1 Nov 2006||1 May 2008||United States Gypsum Company||Method for wet mixing cementitious slurry for fiber-reinforced structural cement panels|
|US20100080362 *||30 Sep 2008||1 Abr 2010||Avaya Inc.||Unified Greeting Service for Telecommunications Events|
|US20100175341 *||23 Mar 2010||15 Jul 2010||Certainteed Corporation||Moisture diverting insulated siding panel|
|CN101512078B||25 Jun 2007||8 Ago 2012||安德-卡沃公司||Interior decoration system|
|EP1873325A1 *||28 Jun 2006||2 Ene 2008||Under-Cover||Plastering profile made of reinforced wall plastering material|
|WO1999004115A1 *||17 Jul 1998||28 Ene 1999||Fritz Wiehofsky||Production method and element for inside and outside walls that are to be plastered|
|Clasificación de EE.UU.||52/338, 52/745.5, 264/309, 264/35, 428/703|
|Clasificación cooperativa||B28C5/404, B28B19/0092, E04D7/00|