EP1507636B1 - Verfahren zur herstellung von gipskartonplatten mit vier sich verjüngenden kanten - Google Patents

Verfahren zur herstellung von gipskartonplatten mit vier sich verjüngenden kanten Download PDF

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Publication number
EP1507636B1
EP1507636B1 EP03747485A EP03747485A EP1507636B1 EP 1507636 B1 EP1507636 B1 EP 1507636B1 EP 03747485 A EP03747485 A EP 03747485A EP 03747485 A EP03747485 A EP 03747485A EP 1507636 B1 EP1507636 B1 EP 1507636B1
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Prior art keywords
lines
protuberances
facing paper
line
paper
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French (fr)
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EP1507636A1 (de
Inventor
Michel Capron
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Etex France Building Performance SA
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Lafarge Platres SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0092—Machines 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

Definitions

  • the present invention relates to a method and devices for manufacturing gypsum board having 4 thinned edges on their periphery.
  • the technical field of the invention is the field of the manufacture of continuous plasterboard in which two sheets of cardboard, one lower called cream paper, the other upper called gray paper unwind and come to lock in a shaper which is either forming trays or forming rolls, a plaster based hydraulic binder.
  • This composite strip is sheared to length, it goes into a drying oven, it is finally re-sawed to final length before being stacked.
  • Such a method is well known elsewhere and therefore will not be described in itself in more detail in the present description.
  • GB-A-451 389 discloses a method and apparatus for continuous manufacture of gypsum board.
  • the transverse thinning resulting from the impressions have qualities of surface appearance, shape and strength identical to the longitudinal thinning and are well manufactured following a continuous process that 'proves to be of a very low cost and very interesting for the industrialists and the plasterboard market.
  • FIG. 1 represents a continuously operating plasterboard production line (12) of the type presented in the introduction, in which two sheets of cardboard paper, the lower one called cream paper (3), the another superior called gray paper (4), unwind and come enclose in a shaper (7) a hydraulic binder (2) from a mixer (1).
  • These two sheets of paperboard, cream (3) and gray (4) constitute with the hydraulic binder (2) a composite strip (10) which hardens on the two curing strips (8) and (9).
  • These two hardening strips (8) and (9) have at the edge of two small strips of bevels which will generate on the composite strip (10) the longitudinal thinning (13).
  • the composite strip (10) is cut to length 1 by the shear (11), the resulting plasterboard (12) are provided with longitudinal thinning (13) but are not provided with transverse thinning (14).
  • the method according to the invention precisely makes it possible to continuously generate transverse slices (14) in addition to longitudinal thinning (13) on the plaster boards (12) emerging from the shears (11).
  • the first step is to create an extra thickness under the cream paper (3) before it passes under the mixer (1) and before it crosses the shaper (7).
  • This extra thickness of about 1.5 mm under the cream paper (3), we will proceed to the stamping of said cream paper (3) following lines of bumps (20).
  • these bump lines (20) are straight lines of a length less than the width of the cream paper (3) centered and perpendicular to the direction of travel of said cream paper (3).
  • the bumps (16) of these bump lines (20) are spaced from each other by about 20 mm and protrude under the cream paper (3) about 1.5 mm. This value of 1.5 mm corresponds to the generally desired value of the transverse thinned height "b" (29).
  • These lines of bumps (20) are arranged under the cream paper (3) on the fly, fast rate, rate can be less than two seconds and following a specific step "p" (48).
  • This pitch “p” (48) depends on the desired length of the plasterboard (12), the longitudinal expansion of the composite strip (10) during its curing on the hardening strips (8) and (9) and the over-length required for sawn plasterboard (12) at the line exit. An interval or step “p" (48) that the skilled person know very well calculate.
  • these intermittently discontinuous lines of bosses (20) have the quite singular advantage of not disappearing or being erased under the mechanical "T" tension (47) of the cream paper (3). ) unlike other imagined methods of folding or embossing the cream paper (3) in a continuous pattern over a wide width.
  • the method of the invention simultaneously with stamping the bump lines (20), proceeds to notch the cream paper (3) along two stiffening notch lines (23).
  • These stiffening notch lines (23) are made on the outer side of the cream paper (3) on either side of each bump line (20) of the same length as the parallel and centrally aligned bump lines (20) with respect to lines of bumps (20).
  • the function of these two lines of stiffening notches is to strengthen, to help the bumps line (20) to support in the following process the weight of the hydraulic binder (2).
  • the length "1" (49) of the bump lines (20) is equal to the overall width of the plasterboard (12) reduced by the sum of the widths of the two longitudinal thinned (13).
  • the method according to the invention then consists, in the area located from the forming table (5) to the shaper (7), to protect the lines of bumps (20) against tearing, snagging or deformation.
  • all the asperities all attachment points (17) are removed, and grooves are provided on the spreader (6).
  • said spreader (6) generally vibrating or rotating shakes the cream paper (3) and the hydraulic binder (2) without affecting the bumps which pass them without contact in the hollow of its grooves, therefore without contact with said spreader (6).
  • the bump lines (20) passing through the shaper (7) locally lift the cream paper (3) and reduce by the same amount of hydraulic binder (2) contained in the composite strip (10). ), and the upper surface of the composite strip (10) leaving the shaper (7) will be uniformly flat despite the local uprisings of the latter.
  • the bumps lines (20) protruding under the cream paper (3) keep raised the composite strip (10) until its complete hardening.
  • the composite strip (10) at the outlet of the hardening strip (9) has on its underside double slope footprints (19) spaced apart from each other by a distance slightly greater than the length of gypsum board (12) to be produced.
  • the method according to the invention consists in the last phase in cutting the composite strip (10) using the shear (11) right, in the middle and in the axis of each of the double-slope footprints (19).
  • this gypsum board (12) then crosses the dryer, then it is sawn to length, this sawing completely removing the 1 ⁇ 2 lines of bumps (50) residual.
  • the gypsum boards (12) thinned on all their periphery are stacked and then join the stock of the plant.
  • the cutting by the shears (11) occurs simultaneously in the double-slope footprints (19) and at equal distance from two double-slope footprints (19), the plasterboard (12) thus produced have 3 thinned, two longitudinal thinned (13) a transverse thinned (14), these 3 thin plates are interesting for particular applications of the market.
  • the inner surface of the bumps (16), the interior of the bumps (22), and the upper and horizontal surface of the cream paper (3) located between the bumps (16) and the stiffening notches (23) also called reinforced surface (21) are covered with a coating (15).
  • This coating (15) being applied on the fly, immediately after the stamping operation of the bump lines (20).
  • the chemical composition of this coating (15) is such that it makes it possible with almost immediate effectiveness to increase the mechanical strength of the bumps (16), to waterproof and to protect against softening the bump lines (20), sealing said bump lines (20) with respect to the hydraulic binder (2), and finally ensuring on the reinforced surface (21) a good connection of the hydraulic binder (2) and cream paper (3).
  • the bump lines (20) are prolonged at each of their ends along a length equal to the width of the longitudinal thinning (13).
  • This bump line extension (28) is formed of bumps (16) that are reduced in depth as the bump line extension (28) approaches the outer edge of the cream paper (3).
  • This extension of bumps line (28), when crossing the hardening strips (8) and (9), is supported on the bevel strips that are used to make the longitudinal thinning (13).
  • the shape of the bumps (16) generated by stamping is adapted so that the latter have the best possible mechanical characteristics, they can be indifferently without it is limiting of hemispherical, pyramidal, conical shape, in 1 ⁇ 2 moon
  • the cream paper (3) at its beginning of transverse thinning (14) is marked with a slight notch, this transverse thinning start marking line (14) improves at the both the geometry and the aesthetics of the transverse thinning (14).
  • This transverse taper start marking line (24) is of the same length and parallel to the bump line (20) and is naturally located relative thereto at a distance equal to the width of the transverse taper "a "(27).
  • This transverse thinning start marking line (24) which proceeds by a slight notching of the cream paper (3) indifferently to the outside or inside of the latter is carried out simultaneously with the stamping of the bump lines ( 20).
  • the cream paper (3) is marked at the connecting line of the transverse thinning (14) and the longitudinal thinning (13).
  • This thinning line (26) connects the end of the transverse thinning start marking line (14) to the end of the stiffening slot line (23).
  • This thinning connection line (26) naturally has an angle "c" (46) of 45 ° with respect to the principal axes of the transverse slices (14) and the longitudinal thinned (13).
  • This thinning fitting line (26) improves both the geometry and the aesthetics of the cross section of the transverse thinning (14) and the longitudinal thinning (13).
  • This thinning connection line (26) which proceeds by lightly notching the cream paper (3) indifferently outside or inside the latter is performed simultaneously with the stamping lines of bumps (20).
  • the outer surface of the cream paper (3) corresponding to the future transverse thinned (14) is roughened to promote the adhesion of the grouting compound which will later be applied in this area during the implementation of the plasterboard (12).
  • This rough surface (25) corresponding to the polygons defined by the line of the stiffening notch (23), the transverse thinning start marking line (24) and the two thinning connection lines is obtained either by pecking, either by knurling, by stamping, or by rubbing said surface.
  • This step of the method according to the invention for producing the rough surfaces (25) takes place simultaneously with stamping the bump lines (20).
  • the first device referred to as a stamping follower device (30) associated with the method according to the invention appearing in FIG. 1 and detailed in FIGS. 3 and 4 proceeds to all the phases of the method according to the invention of docking and machining on the fly. and at a fast rate of the cream paper (3) before the latter engages under the mixer (1).
  • These said machining operations are the embossing of the bump lines (20), the embossing of the bump line extensions (28), the coating of the bumps (16), the coating of the reinforced surface (21). ), producing the stiffening notches (23), notching the transverse taper start marking lines (24), notching the tapered connecting lines (26), and producing the rough surface ( 25).
  • the stamping follower device (30) driven by its transmission motor (33) catches and starts a few fractions of seconds at the same speed as the cream paper (3).
  • the lower table (31) integral with the stamping follower device (30) moves up and down by means of the jacks and guides (34).
  • the lower table (31) compresses the cream paper against the upper table (32) also integral with the stamping follower device (30).
  • the tools equipping the lower table (31) and the upper table (32) come into effect and thus locally mill the cream paper (3).
  • the punches (35) equipping the upper table (32) and the dies (36) equipping the lower table (31) achieve the bumps lines (20) and according to a variant of the method of the invention the extensions of bumps lines (28).
  • stampers (37) equipping the lower table (31) and counter stamps (38) equipping the upper table (32) perform the stiffening notches (23), the transverse thinning start marking lines (24), the thinning connection lines (26), potting the rough surface (25). More specifically, the inner edge (39) of the stamper (37) produces the stiffening notch, the outer edge (40) of the stamper (37) produces the thinned start marking lines and the the thimbles (41) of the stamper produce the rough surfaces (25).
  • the nozzles (44) located between the punches (35) project on the bumps (16) and on the reinforced surface (21) the coating (15) whose main function is holding and reinforcing bumps (16).
  • the stamping follower device (30) in position "O2" when machining cream paper (3) quickly returns back to position "O1", a new cycle of docking and machining of cream paper (3) resumes at a step "p" (48) of the previous machining of the cream paper (3) and so on the cycle is repeated.
  • the transmission motor (33) is associated with an adapted electronics, and the pulse generator (42) which permanently measures the scrolling of the paper cream (3). This motor transmission (33) can thus dock fast frequency cream paper (3) and allow all the steps "p" (48) machining necessary for the method according to the invention.
  • the punches (35) and the dies (36) make it possible, by their shapes and forms, to make bumps (16) which are either hemispherical or pyramidal or conical or else in 1 ⁇ 2 moon without these forms being limiting.
  • the method of the invention protects the bumps (16) during their passage in the area of the forming table (5) to the shaper (7).
  • all the asperities of the forming table (5) all attachment points (17) of the guides and forming rules are removed.
  • Grooves are provided on the spreader (6), so that the spreader (6) generally a vibrating table or drumming rolls beat the cream paper (3) to spread the hydraulic binder (2) without affecting the bumps (16) which they passing through the grooves pass without being touched by the spreader (6).
  • the said zone located from the forming table (5) to the shaper (7) in no way affects the bump lines (20).
  • the second device ensuring the cut right fingerprints (19) consists of the fingerprint sensor (18) at a distance "d” of the shears (2) and a suitable electronics that know the speed "V" of the band Composite (45) instructs the shear (11) to sever the composite strip (10) at the right of the double slope footprint (19).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Toys (AREA)
  • Cosmetics (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Finishing Walls (AREA)
  • Laminated Bodies (AREA)

Claims (10)

  1. Verfahren zur kontinuierlichen Herstellung von Gipskartonplatten (12), bei dem zwei Blätter von kartoniertem Papier, das eine als cremefarbenes Papier (3) und das andere als graues Papier (4) bezeichnet, in einem Formgeber (7) ein hydraulisches Bindemittel (2) auf der Basis von Gips einschließen, wodurch ein Verbundstreifen (10) erzeugt wird, der auf zwei Härtungsbändern (8) und (9) härtet, an deren Rand zwei abgeschrägte Streifen für die Herstellung der verdünnten Längsränder (13) vorhanden sind, dadurch gekennzeichnet, dass es darin besteht:
    - das cremefarbene Papier (3) gemäß quer und lotrecht zur Abrollrichtung des cremefarbenen Papiers (3) verlaufenden und unter dem cremefarbenen Papier (3) vorstehenden Linien (20) von Vertiefungen auszubauchen, wobei die Linien (20) von Vertiefungen erzeugt werden:
    - gemäß einer Länge "1" (49) gleich der größten Breite der Gipskartonplatte (12), verringert um die Summe der Breiten der zwei Längsverdünnungen (13),
    - in einer Zone, die sich notwendigerweise vor dem Mischer (1) und dem Formgeber (7) befindet,
    - im Vorbeilauf in schneller Taktfolge und unter Beachtung eines genauen Abstands "p" (48) zwischen den Linien (20) von Vertiefungen entsprechend der späteren Länge der Gipskartonplatte (12),
    - gleichzeitig mit dem Ausbauchen der Linien (20) von Vertiefungen, das cremefarbene Papier (3) entlang von zwei geraden durchgehenden Linien (23) von Versteifungskerben einzukerben, wobei die Linien (23) von Versteifungskerben hergestellt werden:
    - auf der Außenseite des cremefarbenen Papiers (3),
    - zu beiden Seiten jeder Linie (20) von Vertiefungen,
    - in gleicher Länge wie die Linien (20) von Vertiefungen,
    - parallel und zentriert bezüglich der Linien (20) von Vertiefungen,
    - bis zum Durchqueren des Formgebers (7) die Linien (20) von Vertiefungen vor dem Abreißen, Verhaken oder Verformen zu schützen,
    - die Linien (20) von Vertiefungen, die unter dem cremefarbenen Papier (3) vorstehen, den Formgeber (7) durchqueren zu lassen und lokal die Menge von zwischen dem cremefarbenen Papier (3) und dem grauen Papier (4) eingeschlossenem hydraulischem Bindemittel (2) zu reduzieren,
    - die Linien (20) von Vertiefungen, die unter dem cremefarbenen Papier (3) vorstehen, auf den zwei Härtungsbändern (8) und (9) aufliegen zu lassen, lokal das cremefarbene Papier (3) anzuheben und den Eindruck (19) mit Doppelschrägen zu erzeugen,
    - die Eindrücke (19) mit Doppelschrägen die zwei Härtungsbänder (8) und (9) überqueren zu lassen,
    - den Verbundstreifen (10) mit Hilfe der Schere (11) im rechten Winkel zu, genau in der Mitte und in der Achse jedes der so erzeugten Eindrücke (19) mit Doppelschrägen zu schneiden.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass alle Innenseiten der Vertiefungen (16) und die obere und waagrechte Fläche des cremefarbenen Papiers (3) zwischen den Vertiefungen (16) und den Versteifungskerben (23), wobei die Fläche verstärkte Fläche (21) genannt wird, mit einer Anstrichschicht (15) bedeckt sind, wobei der Anstrich (15) im Vorbeilauf direkt nach dem Vorgang des Ausbauchens der Linien (20) von Vertiefungen aufgetragen wird, wobei der Anstrich (15) selbst dadurch gekennzeichnet ist, dass er darin besteht:
    - die mechanische Festigkeit der Linien (20) von Vertiefungen zu erhöhen,
    - die Linien (20) von Vertiefungen undurchlässig zu machen,
    - die Linien (20) von Vertiefungen gegenüber dem hydraulischen Bindemittel (2) abzudichten,
    - eine gute Verbindung des hydraulischen Bindemittels (2) und des cremefarbenen Papiers (3) in Höhe der verstärkten Fläche (21) zu garantieren.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Linien (20) von Vertiefungen an jedem ihrer Enden gemäß einer Länge gleich der Breite der Längsverdünnungen (13) durch eine Verlängerung (28) der Linie von Vertiefungen mit Vertiefungen (16) verlängert werden, deren Vertiefungshöhe "h" (45) nach und nach abnimmt, je weiter die Linie (20) von Vertiefungen sich dem Außenrand des cremefarbenen Papiers (3) annähert, wobei die Verlängerung (28) der Linie von Vertiefungen beim Überqueren der Härtungsbänder (8) und (9) auf den abgeschrägten Streifen in Auflage kommt, wobei die abgeschrägten Streifen zur Herstellung der Längsverdünnungen (13) dienen.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das cremefarbene Papier (3) durch eine so genannte Verdünnungsbeginn-Markierungslinie (24) vormarkiert ist, die dem späteren Beginn der Querverdünnung (14) entspricht, wobei die Verdünnungsbeginnlinie (24) die gleiche Länge wie die Linie (20) von Vertiefungen hat und parallel und in einem Abstand "a" zu dieser letzteren liegt, wobei der Abstand "a" gleich der Breite der gesuchten Querverdünnung "a" (27) ist, wobei diese Vormarkierung, die durch eine leichte Einkerbung des cremefarbenen Papiers (3) erfolgt, gleichzeitig mit dem Ausbauchen der Linien (20) von Vertiefungen stattfindet.
  5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass das cremefarbene Papier (3) durch eine so genannte Verdünnungsverbindungslinie (26) vormarkiert wird, die dem Zusammentreffen der Längsverdünnung (13) und der Querverdünnung (14) entspricht, wobei die Verdünnungsverbindungslinie (26) vom Ende der Querverdünnungsbeginn-Markierungslinie (24) ausgeht und an der Versteifungskerbenlinie (23) gemäß einem Winkel "c" (46) von 45° endet, wobei die Vormarkierung, die durch eine leichte Einkerbung des cremefarbenen Papiers (3) erfolgt, gleichzeitig mit dem Ausbauchen der Linien (20) von Vertiefungen stattfindet.
  6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Außenfläche des cremefarbenen Papiers (3), die der späteren Querverdünnung entspricht und sich in dem Polygon befindet, das von der Versteifungskerbenlinie (23), der Querverdünnungsbeginn-Markierungslinie (24) und den beiden Verdünnungsverbindungslinien (26) definiert wird, entweder durch Aufnadelung oder durch Rändeln oder durch Stanzen oder durch Frottieren aufgeraut wird, wobei dieser Schritt des erfindungsgemäßen Verfahrens zur Herstellung der rauen Oberfläche (25) gleichzeitig mit dem Ausbauchen der Linien (20) von Vertiefungen erfolgt.
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Überprüfung der Höhe der Querverdünnung "b" (29) und die Überprüfung der Breite der Querverdünnung "a" (27) durch die Anpassung der folgenden Parameter erfolgt:
    - die Höhe "h" (45) der Vertiefungen
    - die Härte der Versteifungskerbe (23)
    - die Härte der Querverdünnungsbeginn-Markierungslinie (24)
    - die mechanische Spannung des cremefarbenen Papiers (3).
  8. Vorrichtung zur Anwendung des Verfahrens nach einem der Ansprüche 1 bis 7, die aus einer Fertigungsreihe von Gipskartonplatten (12), in der zwei Blätter von kartoniertem Papier, das eine als cremefarbenes Papier (3) und das andere als graues Papier (4) bezeichnet, abgerollt werden und in einem Formgeber (7) ein hydraulisches Bindemittel (2) auf der Basis von Gips umschließen und einen Verbundstreifen (10) bilden, der auf zwei Härtungsbändern (8) und (9) härtet, die mit abgeschrägten Streifen zur Herstellung von Längsverdünnungen (13) ausgestattet sind, und einer Schereinrichtung besteht, die hinter den Härtungsbändern (8) und (9) angeordnet ist und die Aufgabe hat, den Verbundstreifen (10) im rechten Winkel zu, genau in der Mitte und in der Achse der Eindrücke mit Doppelschrägen (19) zu schneiden, dadurch gekennzeichnet, dass sie weiter die folgenden Mittel aufweist:
    - ein Ausbauchungs-Nachführgerät (30), das sich in einer Zone kurz vor dem Mischer befindet und Mittel aufweist, um:
    - sich in schneller Folge an das cremefarbene Papier (3) gemäß einem vordefinierten Abstand "p" (48) anzulegen,
    - das cremefarbene Papier (3) auszubauchen, um Linien (20) von Vertiefungen zu erzeugen,
    - das cremefarbene Papier (3) einzukerben, um Versteifungskerbenlinien (23) zu erzeugen,
    - das cremefarbene Papier (3) auszubauchen, um die Verlängerungen (28) der Linie von Vertiefungen zu erzeugen,
    - das cremefarbene Papier (3) einzukerben, um Querverdünnungsbeginn-Markierungslinien (24) und Verdünnungsverbindungslinien (26) zu erzeugen,
    - die raue Oberfläche (25) aufzurauen, die der späteren Querverdünnung (14) entspricht.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass das Ausbauchungs-Nachführgerät (30) aus einem unteren Tisch (31), der sich unter dem cremefarbenen Papier (3) befindet, und aus einem oberen Gegentisch (32) besteht, der sich über dem cremefarbenen Papier (3) befindet, wobei der untere Tisch (31) mit Arbeitszylindern und Führungen (34), Matrizen (36) und Stanzeinrichtungen (37) ausgestattet ist, wobei die Stanzeinrichtungen je eine Innenkante (39) und eine Außenkante (40) und Zäckchen (41) aufweisen, wobei der obere Tisch (32) mit Stanzstempeln (35), einer Gegen-Stanzeinrichtung (38), Düsen (44) für einen Anstrich (15) und einem Impulsgenerator (42) ausgestattet ist, wobei die beiden Tische, der untere (31) und der obere (32), integrierender Bestandteil des Ausbauchungs-Nachfuhrgeräts (30) sind, das selbst von dem Übersetzungsantrieb (33) bewegt wird.
  10. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass das Schergerät aus einer Schere (11), einem Eindruckdetektor (18), wobei der Eindruckdetektor (18) sich in dem bekannten Abstand "d" von der Schere (11) befindet, und aus einem Scherenschnitt-Rechner (11) besteht.
EP03747485A 2002-05-02 2003-05-02 Verfahren zur herstellung von gipskartonplatten mit vier sich verjüngenden kanten Expired - Lifetime EP1507636B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0205490 2002-05-02
FR0205490A FR2839275B1 (fr) 2002-05-02 2002-05-02 Procede et dispositif pour fabriquer des plaques de platre presentant quatre bords amincis
PCT/FR2003/001373 WO2003092976A1 (fr) 2002-05-02 2003-05-02 Procede de fabrication de plaques de platre a 4 bords amincis

Publications (2)

Publication Number Publication Date
EP1507636A1 EP1507636A1 (de) 2005-02-23
EP1507636B1 true EP1507636B1 (de) 2006-04-26

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US (1) US20060144497A1 (de)
EP (1) EP1507636B1 (de)
AT (1) ATE324239T1 (de)
AU (1) AU2003249388A1 (de)
DE (1) DE60304858D1 (de)
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FR2838370B1 (fr) 2002-04-10 2004-05-28 Lafarge Platres Procede de fabrication de plaques de platre a quatre bords amincis
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DE102004042143B3 (de) * 2004-08-31 2006-02-16 Eisenmann Maschinenbau Gmbh & Co. Kg Verfahren zur Herstellung von Bauelementen, insbesondere von Bauplatten, aus Feststoffabfällen
US8123991B2 (en) * 2005-11-09 2012-02-28 John S Conboy System and method for making wallboard
FR2905965B1 (fr) * 2006-09-15 2013-11-29 Placoplatre Sa Perfectionnement concernant une plaque de parement, notamment une plaque de platre.
WO2011020146A1 (en) * 2009-08-20 2011-02-24 Dragan Haris Profiled plasterboard
RU2622416C2 (ru) * 2012-12-12 2017-06-15 Кнауф Гипс Кг Синхронизируемое регулирование количества гипсового теста
WO2015103120A2 (en) 2013-12-30 2015-07-09 Saint-Gobain Placo Sas Building boards with increased surface strength
US10564081B2 (en) 2017-02-03 2020-02-18 United States Gypsum Company System and method for evaluating edge hardness of cementitious boards and system for stacking cementitious boards inlcuding same
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PL372802A1 (en) 2005-08-08
FR2839275A1 (fr) 2003-11-07
WO2003092976A1 (fr) 2003-11-13
AU2003249388A1 (en) 2003-11-17
DE60304858D1 (de) 2006-06-01
EP1507636A1 (de) 2005-02-23
US20060144497A1 (en) 2006-07-06
ATE324239T1 (de) 2006-05-15
FR2839275B1 (fr) 2004-06-04

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