US2238017A - Method and apparatus for manufacturing wallboard - Google Patents

Method and apparatus for manufacturing wallboard Download PDF

Info

Publication number
US2238017A
US2238017A US170513A US17051337A US2238017A US 2238017 A US2238017 A US 2238017A US 170513 A US170513 A US 170513A US 17051337 A US17051337 A US 17051337A US 2238017 A US2238017 A US 2238017A
Authority
US
United States
Prior art keywords
projections
board
sheet
plastic mass
cover sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US170513A
Inventor
James K Duncan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
United States Gypsum Co
Original Assignee
United States Gypsum Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United States Gypsum Co filed Critical United States Gypsum Co
Priority to US170513A priority Critical patent/US2238017A/en
Application granted granted Critical
Publication of US2238017A publication Critical patent/US2238017A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0092Machines or methods for applying the material to surfaces to form a permanent layer thereon to webs, sheets or the like, e.g. of paper, cardboard

Description

April 1 1941- J. K. DUNCAN 2.238.017
METHOD AND ABPARATUS FOR MANUFACTURING WALLBOARD Filed Oct. 23, 1937 Patented Apr. 8, 1941 METHOD AND APPARATUS FOR MANU- FAOTURING WALLBOARD James K. Duncan, Chicago, Ill., assignor to United States Gypsum Company, Chicago, 111., a corporation of Illinois Application" October 23, 1937, Serial No. 170,513
13 Claims.
' sheet, of wallboard having a cementitious or composition core, and paper or fibrous liners or cover "sheets, is, of course, well known. It is likewise well known to produce, in a continuous manner, such wallhoard having beveled or depressed longitudinal edges, so that when the wallboards are assembled in a wall structure a more perfect joint between the boards may be formed by applying suitable joining tape and sealing cement to the recess formed by adjacent edges of the board.
While a'similar advantage is to be found in wallboards having their transverse ends beveled or depressed, particularly when the boards are to be erected with the long, dimensional boards horizontal, no entirely satisfactory method has heretofore been proposed for manufacturing such beveled or recessed-end boards.
It has been proposed to form such recessed-end boards by depressing portions of the board after 3 the board has been cast or formed. This procedure is not entirely satisfactory, since the pressing operation is usually detrimental to the core of the board. It has likewise been proposed to produce such recessed-end boards by forming parallel rows of projections in the outer surface of one of the cover sheets by punching the cover sheet before the board is formed and severing the continuous board stream between the rows of projections after the board is formed. It will be apparent that boards formed by this latter method have a series of projections spaced along the depressed or beveled portions, and that these projections seriously interfere with the application of joining tape and sealing cement when a wall structure is being erected from the boards. Numerous other objections are also found in recessed-end boards of this typehaving projections along the recessed-end portions.
It is a further object of my invention to provide an improved method and apparatus for forming. in a continuous manner.- wallboards of this character having-recessed-end portions.
In carrying out my invention in one form, one
of the cover sheets is embossed or creased prior to my invention;
the formation of the board to provide spaced. transversely extending projections on one surface of the board, which projections are effective to space adjacent portions of the cover sheet and of the composition core from the supports therefor during the formation of the board, and during the passage of the board over the setting conveyors. After the core of the board has set, the continuous board stream issevered along opposite sides of the projections entirely to remove the projection from the board and to provide boards of predetermined length having uniformly beveled or recessed-end portions. If desired the continuous board stream may be severed along thecenter lines of the projections and the ends of the boards thus formed may be then trimmed to provide uniform beveled ends.
As a further aspect of my invention, means are provided for applying to the projections, before the application of the plastic mass or core, a suitable stiffening medium so as to prevent deformation of the projections during the board-forming operation. This stiffening medium may have moisture-proofing characteristics if desired. In certain cases the embossing of the cover sheet is carried out in such a manner that the depth of the projections is less than the thickness of the cover sheet, so that a continuous layer of fiber is provided to improve the resistance of the projections to deformation when subjected to tension or pressure. In forming wallboards of the type in which one of the cover sheets is folded around the edges of the plastic mass or core, the projection or embosture extends only across that portion of the cover sheet which is to form the bottom surface of the board so that no creasing or embossing is effected in the portions of the cover sheet to be folded about the core.
Fora more complete understanding of my in- I vention reference should now be had to the drawing, in which:
Figure 1 is a somewhat diagrammatic representation of boardforming apparatus embodying Fig. 2 is a fragmentary perspective view of a portion of the scored or creased cover sheet;
Fig. 3 is a fragmentary side view of a. section of i the continuous board stream before the severing operation has been performed;
Fig. 4 is a fragmentary elevational view of a.
recessed-end board formed in accordance with my invention:
Fig. 5 is a detail view of a portion of the scored sheet shown in Fig. 2:
Fig. 6 is a similar detail View of aportlon of a cover sheet formed in. accordance with a further embodiment of my invention; and
Fig. 7 is a transverse sectional view of a scored cover sheet constituting a further embodiment of my invention.
Referring now to Fig. 1 of the drawing, I-have shown my invention as applied to a board-forming apparatus comprising a pair of embossing rolls I and II, respectively, provided with intermeshing projections I2 and recesses I3 for engaging a fibrous cover sheet or liner It as it is continuously advanced to the forming means of the apparatus. The embossing rolls Ill and II are driven in synchronism by suitable means, not shown, and are arranged to emboss or crease the sheet ll at predetermined intervals so as to provide projections I extending outwardly from one surface of the sheet. As shown best in Fig. 2, these projections I5 extend transversely entirely across the cover sheet I 4 and are preferably channel-shaped, the side walls of the projections extending substantially at right angles to the' surface of the cover sheet.
As shown, the projections I2 and the recesses I3 are so arranged that suflicient space is left between each projection and its cooperating recess to permit the cover sheet I4 to pass therebetween with substantially a pressure fit, so that the cover sheet is crimped into the sharp corner projection I5. In some cases it may be desirable to coat the inner surface of the projection I5 with a suitable moisture resisting and stiffening medium such as lacquer or wax, and for carrying out thisrcoating operation I provide a coating wheel I6 supported on a movable arm II and arranged sequentially to engage the projections I2 on the scoring roll I0 so as to apply the stiffening medium to the projections. As shown, the roll I6 is supported so as to engage the periphery of a cooperating roll I8 which is rotatable in a suitable reservoir I9 containing a bath of suitable stiffening medium. The feature of applying stiffening medium is of particular importance where very thin cover sheets or-liners are used which would otherwisebe incapable of supporting the plastic mass when the thin sheet- Y is moistened.
After the cover sheet I4 has been provided with projections or embostures as described above, it passes over a casting table or support 23 and a plastic mass 2| is applied to the upper surface thereof from any suitable source of supply, as for example the supply spout 22, the plastic mass 2| preferably being gypsum plaster .or other suitable composition material in a plastic or manageable state. After the plastic mass 2| is applied to the upper surface of the sheet ll, the plastic mass and the sheet I4 pass between a pair of forming rolls 23 and 23 which operate to form the plastic mass into a core of desired thickness, a top cover sheet 25 being applied to the upper surface of the core by the forming roll 24.
From the forming rolls 23 and 24 the formed board passes over suitable setting conveyors one of which is represented by the reference numeral 23, and it will be apparent that the projection I3 is effective. during the formation of the board stream and during its passage over the setting conveyors, to space adjacent portions of the cover sheet I4 from the setting conveyor so as to form recesses 21 and 2B in the lower surfaceof the formed board on opposite sides of the projection. The setting conveyors 26 support the board stream for a sumcient time t permit the plastic mass or core 2| to set, and
after setting of the core the board stream is advanced to suitable cutting mechanism by means of which the projections I5 and the portions of the board stream immediately thereover are entirely removed. Thus, in Fig. 1, I have shown the cutting means as comprising two pairs of cooperating cutting knives 29 and 30, which are arranged to sever the board stream along the opposite transverse edges of the pro.- jections l5. These cutting knives are of course operated in synchronism with the travel of the board stream so as to sever the board at the proper instant, that is, just as the projection I5 reaches the position shown in Fig. 1 with respect to the knives 29 and 30. As indicated above, a single pair of cutting knives may be used in place of the knives 29 and 30, and these knives may be arranged to sever the board stream along the center lines of the projections I5 thus separating the stream into a plurality of recessed-end boards having ridges or uneven edges along the transverse recessed-ends. Th'ese uneven edges or ridges may then be removed by grinding or sawing so as entirely to; remove the portions of the board stream formed by the projections I5 and to provide uniform recessedend boards.
The character and formation of the board stream as it passes over the setting conveyors is illustrated most clearly in Fig. 3, and the character of the transverse end of the board'produced after the projection I5 has been removed is illustrated in Fig. 4.
Fig. 5 shows the preferred shape of the projections I5 in the sheet I4 .before the plastic mass is applied to the. upper surface of the cover sheet, and although the dimensions of the channel-shaped projections I5 may be varied so that the recesses 21 and 28 produced thereby in the formed board are of suitable depth and length, I have found that a very satisfactory product is obtained if the depth of the recesses indicated by the letter a in Fig. 4 is approximately .03 inch and if the length of the recessed or beveled end indicated by the letter I) inFig. 4 is approximately 1% inches;
In Fig. 6 there is shown a cover sheet 3| having a projection 32 which is formed by embossing or creasingthe sheet 3| to a depth less than the thickness of the sheet. As will be understood by those skilled in the art, embossing or creasing the sheet 3| in this manner provides a continuous horizontal layer of fiber, indicated by the broken.
line 33 in Fig. 6,'which is instrumental in increasing the strength of the embossed or rigid sheet and in resisting deformation or flattening of the projection 32 when the sheet 3| is subjected to tension during the board-forming operation.
In the embodiments of my invention thus far described, the plasterboards formed are of the open or raw-edge type, and it is sometimes desirable -to provide boards of the type having closed edges, which boards areproduced by folding a portion of one of the cover sheets around the plastic mass or core during the board-forming operation. In providing beveled or recessed ends on boards of this type, in accordance with my invention, the bottom cover sheet or liner is formed as shown in Fig. 7, the cover sheet 34. there shown being provided with a continuous channel-shaped projection 35 which extends only board. Thus the edge portions 35 of the linersheet transversely at predetermined intervals to a depth less than the thickness of said sheet to provide outwardly extending channel-shaped pro- J'ections on one surface of said sheet while maintaining a continuous substantially longitudinal fibrous layer, applying a plastic mass to the other surface of said sheet to form a continuous sheet of plasterboard, supporting said plasterboard sheet on a plane surface until said plastic mass has set. said projections supporting portions of said cover sheet in spaced relation to said plane surface to form recesses in one surface of said plasterboard sheet on opposite sides of said projections, and severing said plasterboard sheet along said projections so as to remove said pro-.
jections and form recessed-end plasterboards.
10. In a wallboard apparatus including means for advancing a plastic mass between cover sheets of fibrous material and board-forming means for operating on said cover sheets with the plastic mass therebetween to form a product of desired thickness, the combination of means for periodically embossing the bottom one of said continuously advanced sheets prior to the board-forming operation to form transversely extending linear projections on the outer surface of said bottom sheet, said projections formingrecesses in one surface of the formed board on opposite sides of the projections, and means for severing said formed board along the transverse edges of said projections to remove the projections and form recessed-end boards.
11. In a wallboard apparatus including means for advancing a plastic mass between cover sheets of fibrous material and board-forming means for operating on said cover sheets with the plastic mass therebetween to form a product of desired thickness; the combination of cooperating embossing rolls having intermeshing projections and depressions for transversely embossing the bottom cover sheet as it passes therebetween prior to application of the plastic mass, means for applying a moisture resisting and stifiening medium to the projections on said embossing rolls to reinforce the projections formed on one surface of said bottom cover sheet by said embossing rolls,
said reinforced'projections supporting portions of said cover sheet out of the plane of the surface of the formed board to provide recesses in said surface, and means for severing said formed board along the transverse edges of said reinforced projections to remove said projections and form recessed-end boards.
12. In a wallboard apparatus including means for advancing a plastic mass between cover sheets of fibrous material and board-forming means for operating on said cover sheets with the plastic mass therebetween to form a product of desired thickness, the combination of means for periodically embossing the bottom one of said continuously advanced sheets prior to the board-forming operation to form transversely extending linear projections on the outer surface of said bottom sheet, conveyor means for supporting the formed board until the plastic mass has set, said projections engaging said conveyor means to support adjacent portions of said bottom cover sheet out of the plane of the surface of the formed board, whereby recesses are formed in said surface on opposite sides of said projections, and means for severing said formed board along the transverse edges of said projections after the plastic mass has set to remove said projections and form depressed-end boards.
13. In a continuous process of forming plasterboards by depositing a plastic mass on a bottom cover sheet, folding the edge portions of said sheet about said mass, applying a top cover sheet, forming the plastic mass between said cover sheets and supporting the resulting product on a plane surface until the plastic mass has set, the steps which consist ofembossing the bottom cover sheet at longitudinally spaced intervals before application of the plastic mass to form projections extending transversely across only that portion of the bottom cover sheet which covers the bottom surface of the finished product whereby said edge portions may be folded, and so severing the formed product as to remove the projections after the plastic mass has set and form recessedend boards.
JAMES K. DUNCAN.
US170513A 1937-10-23 1937-10-23 Method and apparatus for manufacturing wallboard Expired - Lifetime US2238017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US170513A US2238017A (en) 1937-10-23 1937-10-23 Method and apparatus for manufacturing wallboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US170513A US2238017A (en) 1937-10-23 1937-10-23 Method and apparatus for manufacturing wallboard

Publications (1)

Publication Number Publication Date
US2238017A true US2238017A (en) 1941-04-08

Family

ID=22620154

Family Applications (1)

Application Number Title Priority Date Filing Date
US170513A Expired - Lifetime US2238017A (en) 1937-10-23 1937-10-23 Method and apparatus for manufacturing wallboard

Country Status (1)

Country Link
US (1) US2238017A (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923030A (en) * 1952-12-23 1960-02-02 Allwood Inc Methods and apparatus for producing pressed wood-particle panels
US2991826A (en) * 1957-09-11 1961-07-11 Celotex Corp Gypsum wallboard
US2991824A (en) * 1957-08-29 1961-07-11 Celotex Corp Recessed end gypsum board and process of manufacture
US3878009A (en) * 1972-02-04 1975-04-15 Harold James William Payne Glass fiber reinforced gypsum building components and method
US3907479A (en) * 1971-08-03 1975-09-23 Wasagchemie Ag Device for the compression of black powder
US4781558A (en) * 1986-09-26 1988-11-01 The Celotex Corporation Apparatus for making an embossed gypsum panel
US4810569A (en) * 1984-02-27 1989-03-07 Georgia-Pacific Corporation Fibrous mat-faced gypsum board
US4842786A (en) * 1986-09-26 1989-06-27 The Celotex Corporation Method for producing an embossed gypsum panel
EP0482810A1 (en) * 1990-10-22 1992-04-29 Domtar Inc. Method of reshaping a gypsum board core and products made by same
US5319900A (en) * 1984-02-27 1994-06-14 Georgia-Pacific Corporation Finishing and roof deck systems containing fibrous mat-faced gypsum boards
US5342680A (en) * 1988-01-06 1994-08-30 Georgia-Pacific Corporation Glass mat with reinforcing binder
US5644880A (en) * 1984-02-27 1997-07-08 Georgia-Pacific Corporation Gypsum board and systems containing same
FR2839275A1 (en) * 2002-05-02 2003-11-07 Lafarge Platres PROCESS AND DEVICE FOR MANUFACTURING PLASTERBOARDS HAVING FOUR THIN EDGES
EP1382424A1 (en) * 2002-07-19 2004-01-21 Lafarge Platres Method for manufacturing boards made of hydraulic binder with tapered edges, production line and apparatus for manufacturing such boards
US20040084127A1 (en) * 2000-01-05 2004-05-06 Porter John Frederick Methods of making smooth reinforced cementitious boards
US20040142618A1 (en) * 2003-01-21 2004-07-22 Saint Gobain Technical Fabrics Facing material with controlled porosity for construction boards
US20050108965A1 (en) * 2003-11-26 2005-05-26 Morse Rick J. Clapboard siding panel with built in fastener support
US20050127545A1 (en) * 2002-02-26 2005-06-16 Lafarge Platres Production line for producing sheets based on hydraulic binder and method of manufacturing the same
US20050217784A1 (en) * 2002-04-30 2005-10-06 Lafarge Platres Process for the production of hydraulic binder boards having tapered cut ends
US20050224154A1 (en) * 2002-04-10 2005-10-13 Lafarge Platres Method for production of plaster plates having 4 trapered edges
US20060010800A1 (en) * 2002-11-05 2006-01-19 Bezubic William P Jr Cementitious exterior sheathing product with rigid support member
US20060068188A1 (en) * 2004-09-30 2006-03-30 Morse Rick J Foam backed fiber cement
US20060198989A1 (en) * 2003-08-25 2006-09-07 Lafarge Platres Hydraulic binder-based, tapered-edge boards, production method and production line therefor, and light work construction method
US7155866B2 (en) 2002-11-05 2007-01-02 Certainteed Corporation Cementitious exterior sheathing product having improved interlaminar bond strength
EP2604401A1 (en) * 2011-12-15 2013-06-19 Saint-Gobain Placo SAS A pressing assembly and method for forming a depression within a moving, wet gypsum board

Cited By (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923030A (en) * 1952-12-23 1960-02-02 Allwood Inc Methods and apparatus for producing pressed wood-particle panels
US2991824A (en) * 1957-08-29 1961-07-11 Celotex Corp Recessed end gypsum board and process of manufacture
US2991826A (en) * 1957-09-11 1961-07-11 Celotex Corp Gypsum wallboard
US3907479A (en) * 1971-08-03 1975-09-23 Wasagchemie Ag Device for the compression of black powder
US3878009A (en) * 1972-02-04 1975-04-15 Harold James William Payne Glass fiber reinforced gypsum building components and method
US5644880A (en) * 1984-02-27 1997-07-08 Georgia-Pacific Corporation Gypsum board and systems containing same
US5791109A (en) * 1984-02-27 1998-08-11 Georgia-Pacific Corporation Gypsum board and finishing system containing same
US4810569A (en) * 1984-02-27 1989-03-07 Georgia-Pacific Corporation Fibrous mat-faced gypsum board
US5704179A (en) * 1984-02-27 1998-01-06 Georgia-Pacific Corporation Finishing and roof deck systems containing fibrous mat-faced gypsum boards
US5371989A (en) * 1984-02-27 1994-12-13 Georgia-Pacific Corporation Use of fibrous mat-faced gypsum board in exterior finishing systems for buildings and shaft wall assemblies
US5319900A (en) * 1984-02-27 1994-06-14 Georgia-Pacific Corporation Finishing and roof deck systems containing fibrous mat-faced gypsum boards
US4842786A (en) * 1986-09-26 1989-06-27 The Celotex Corporation Method for producing an embossed gypsum panel
US4781558A (en) * 1986-09-26 1988-11-01 The Celotex Corporation Apparatus for making an embossed gypsum panel
US5342680A (en) * 1988-01-06 1994-08-30 Georgia-Pacific Corporation Glass mat with reinforcing binder
US5718785A (en) * 1988-01-06 1998-02-17 Georgia-Pacific Corporation Glass mat with reinforcing binder
US5981406A (en) * 1988-01-06 1999-11-09 G-P Gypsum Corporation Glass mat with reinforcing binder
US5198052A (en) * 1990-10-22 1993-03-30 Domtar, Inc. Method of reshaping a gypsum board core and products made by same
EP0482810A1 (en) * 1990-10-22 1992-04-29 Domtar Inc. Method of reshaping a gypsum board core and products made by same
US20040084127A1 (en) * 2000-01-05 2004-05-06 Porter John Frederick Methods of making smooth reinforced cementitious boards
US20110053445A1 (en) * 2000-01-05 2011-03-03 John Frederick Porter Methods of Making Smooth Reinforced Cementitious Boards
US7846278B2 (en) 2000-01-05 2010-12-07 Saint-Gobain Technical Fabrics America, Inc. Methods of making smooth reinforced cementitious boards
US9017495B2 (en) 2000-01-05 2015-04-28 Saint-Gobain Adfors Canada, Ltd. Methods of making smooth reinforced cementitious boards
US20050139052A1 (en) * 2002-02-26 2005-06-30 Lafarge Platres Method for production of sheets made from binder, production line for said sheets and device for generation of an impression
US7651327B2 (en) * 2002-02-26 2010-01-26 Lafarge Platres Production line for producing sheets based on hydraulic binder and method of manufacturing the same
US7790090B2 (en) 2002-02-26 2010-09-07 Lafarge Platres Method of manufacturing sheets based on hydraulic binder, production line for producing such sheets and apparatus for making an impression
US20050127545A1 (en) * 2002-02-26 2005-06-16 Lafarge Platres Production line for producing sheets based on hydraulic binder and method of manufacturing the same
US20050224154A1 (en) * 2002-04-10 2005-10-13 Lafarge Platres Method for production of plaster plates having 4 trapered edges
US7431783B2 (en) 2002-04-10 2008-10-07 Lafarge Platres Method and apparatus for production of plaster plates having 4 tapered edges
US20050217784A1 (en) * 2002-04-30 2005-10-06 Lafarge Platres Process for the production of hydraulic binder boards having tapered cut ends
WO2003092976A1 (en) * 2002-05-02 2003-11-13 Lafarge Platres Method of producing plaster boards comprising four tapered edges
FR2839275A1 (en) * 2002-05-02 2003-11-07 Lafarge Platres PROCESS AND DEVICE FOR MANUFACTURING PLASTERBOARDS HAVING FOUR THIN EDGES
US20060144497A1 (en) * 2002-05-02 2006-07-06 Lafarge Platres Method for producing plasterboard with four tapered edges
WO2004009309A3 (en) * 2002-07-19 2004-04-08 Lafarge Platres Method for making thin-edge boards, based on hydraulic binders, line and device for producing same
WO2004009309A2 (en) * 2002-07-19 2004-01-29 Lafarge Platres Method for making thin-edge boards, based on hydraulic binders, line and device for producing same
EP1382424A1 (en) * 2002-07-19 2004-01-21 Lafarge Platres Method for manufacturing boards made of hydraulic binder with tapered edges, production line and apparatus for manufacturing such boards
US20050257873A1 (en) * 2002-07-19 2005-11-24 Lafarge Platres Method for making thin-edge boards, based on hydraulic binders, line and device for producing same
US8192658B2 (en) 2002-11-05 2012-06-05 Certainteed Corporation Cementitious exterior sheathing product having improved interlaminar bond strength
US7028436B2 (en) 2002-11-05 2006-04-18 Certainteed Corporation Cementitious exterior sheathing product with rigid support member
US9435124B2 (en) 2002-11-05 2016-09-06 Plycem Usa, Inc. Cementitious exterior sheathing product having improved interlaminar bond strength
US7155866B2 (en) 2002-11-05 2007-01-02 Certainteed Corporation Cementitious exterior sheathing product having improved interlaminar bond strength
US20060010800A1 (en) * 2002-11-05 2006-01-19 Bezubic William P Jr Cementitious exterior sheathing product with rigid support member
US7861476B2 (en) 2002-11-05 2011-01-04 Certainteed Corporation Cementitious exterior sheathing product with rigid support member
US20070098907A1 (en) * 2002-11-05 2007-05-03 Bezubic Jr William P Cementitious Exterior Sheathing Product Having Improved Interlaminar Bond Strength
US7049251B2 (en) 2003-01-21 2006-05-23 Saint-Gobain Technical Fabrics Canada Ltd Facing material with controlled porosity for construction boards
US20060105653A1 (en) * 2003-01-21 2006-05-18 Porter John F Facing material with controlled porosity for construction boards
US7300515B2 (en) 2003-01-21 2007-11-27 Saint-Gobain Technical Fabrics Canada, Ltd Facing material with controlled porosity for construction boards
US20040142618A1 (en) * 2003-01-21 2004-07-22 Saint Gobain Technical Fabrics Facing material with controlled porosity for construction boards
US20060065342A1 (en) * 2003-01-21 2006-03-30 Porter John F Facing material with controlled porosity for construction boards
US7300892B2 (en) 2003-01-21 2007-11-27 Saint-Gobain Technical Fabrics Canada, Ltd. Facing material with controlled porosity for construction boards
US8257525B2 (en) 2003-08-25 2012-09-04 Lafarge Platres Production method for hydraulic binder-based, tapered-edge boards
US8372240B2 (en) 2003-08-25 2013-02-12 Lafarge Platres Production line for hydraulic binder-based, tapered-edge boards
US20090301630A1 (en) * 2003-08-25 2009-12-10 Lafarge Platres Production method for hydraulic binder-based, tapered-edge boards
US20060198989A1 (en) * 2003-08-25 2006-09-07 Lafarge Platres Hydraulic binder-based, tapered-edge boards, production method and production line therefor, and light work construction method
US20050108965A1 (en) * 2003-11-26 2005-05-26 Morse Rick J. Clapboard siding panel with built in fastener support
US20060068188A1 (en) * 2004-09-30 2006-03-30 Morse Rick J Foam backed fiber cement
US20100319288A1 (en) * 2004-09-30 2010-12-23 Certainteed Corporation Foam backed fiber cement
US20080028705A1 (en) * 2004-09-30 2008-02-07 Certainteed Corporation Foam backed fiber cement
US20060075712A1 (en) * 2004-09-30 2006-04-13 Gilbert Thomas C Moisture diverting insulated siding panel
US7712276B2 (en) 2004-09-30 2010-05-11 Certainteed Corporation Moisture diverting insulated siding panel
US20100175341A1 (en) * 2004-09-30 2010-07-15 Certainteed Corporation Moisture diverting insulated siding panel
US9434131B2 (en) 2004-09-30 2016-09-06 Plycem Usa, Inc. Building panel having a foam backed fiber cement substrate
EP2604401A1 (en) * 2011-12-15 2013-06-19 Saint-Gobain Placo SAS A pressing assembly and method for forming a depression within a moving, wet gypsum board
JP2015500752A (en) * 2011-12-15 2015-01-08 セン・ゴバン プラコ エスアーエス Pressurizing apparatus and method for forming a recess in a moving gypsum board
AU2012351647B2 (en) * 2011-12-15 2016-09-01 Saint-Gobain Placo Sas A pressing assembly and method for forming a depression within a moving, gypsum board
WO2013087766A1 (en) * 2011-12-15 2013-06-20 Saint-Gobain Placo Sas A pressing assembly and method for forming a depression within a moving, gypsum board
US10112318B2 (en) 2011-12-15 2018-10-30 Saint-Gobain Placo Sas Pressing assembly and a method for forming a depression within a moving, wet gypsum board
RU2607001C2 (en) * 2011-12-15 2017-01-10 Сэн-Гобэн Плако Сас Device for pressing to form cavity and method of cavities formation in gypsum board
EP2604402A1 (en) * 2011-12-15 2013-06-19 Saint-Gobain Placo SAS A pressing assembly and method for forming a depression within a moving, wet gypsum board

Similar Documents

Publication Publication Date Title
US2238017A (en) Method and apparatus for manufacturing wallboard
US2246987A (en) Continuous molding apparatus
US2168803A (en) Method and apparatus for manufacturing wallboard
US2712169A (en) Machine for severing a ribbon of plasterboard to form plasterboard panels and finishing the ends of the panels
US2794761A (en) Composite structural panel and method of making same
US1578250A (en) Process of making plaster board
US2044234A (en) Method of manufacturing wallboard
US2095389A (en) Process of making veneer articles
DK683687A (en) Method and apparatus for the manufacture of mineral wools
US3806389A (en) Method and apparatus for forming a lined folded edge on plasterboard
US2081740A (en) Method and apparatus for making fibrous articles
SE7416091L (en)
US1410622A (en) Reenforced-box-blank material and method of manufacturing the same
US1808003A (en) Gypsum wall board
US1627812A (en) Method of producing boxes and box blanks
GB1036126A (en) Improvements in or relating to the manufacture of cellular structural materials
US2309469A (en) Method of associating the edges of two paperboard web sections
US1970029A (en) Method of and apparatus for forming channeled strips
US1693023A (en) Method of making paper boxes
US2575257A (en) Adhesive laminated paper and box stay tape
US1589569A (en) Method of making plaster-board lath
US1997293A (en) Structural material and method for making the same
US1790252A (en) Plaster-board manufacture
US1513439A (en) Method of making erasers
US1791791A (en) Method of producing fabricated lath panels