EP1389251B1 - Procede de flexion de panneaux de platre et composants ainsi obtenus - Google Patents

Procede de flexion de panneaux de platre et composants ainsi obtenus Download PDF

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Publication number
EP1389251B1
EP1389251B1 EP02771654A EP02771654A EP1389251B1 EP 1389251 B1 EP1389251 B1 EP 1389251B1 EP 02771654 A EP02771654 A EP 02771654A EP 02771654 A EP02771654 A EP 02771654A EP 1389251 B1 EP1389251 B1 EP 1389251B1
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EP
European Patent Office
Prior art keywords
panels
cardboard
curving
layers
mold part
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
EP02771654A
Other languages
German (de)
English (en)
Other versions
EP1389251A1 (fr
Inventor
Livio Serafini
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.)
Eurosistemi Italia Srl
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Eurosistemi Italia Srl
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Application filed by Eurosistemi Italia Srl filed Critical Eurosistemi Italia Srl
Publication of EP1389251A1 publication Critical patent/EP1389251A1/fr
Application granted granted Critical
Publication of EP1389251B1 publication Critical patent/EP1389251B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/043—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of plaster
    • 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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/002—Producing shaped prefabricated articles from the material assembled from preformed elements
    • 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
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/08—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
    • B28B11/10—Apparatus or processes for treating or working the shaped or preshaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads by using presses

Definitions

  • the present invention relates to a method for the mass-production of curved components for finishing masonry work or other structures, obtained from normally commercially available flat plasterboard panels, which are already widely used in the building sector for the most disparate uses since in addition to offering good thermal and acoustic insulation they have an appreciable structural strength and are particularly suitable to be completed by simply painting or with any other surface treatment or covering.
  • the plasterboard panels to which the invention relates are those of the most common type, constituted by a sheet or plate of plaster sandwiched between two layers of cardboard.
  • the method according to the invention arises from the problem of providing the workers in the building sector and in the interior-decoration sector the possibility to easily build, at particularly low cost and without specific manual skills, curved surfaces that are perfectly executed because they are formed by means of prefabricated elements to be installed on site and completed in the same manner required by conventional plasterboard panels.
  • the method according to the present invention is as simple as it is novel and inventive and consists in curving and joining simultaneously, in appropriate forming presses, two or more plasterboard panels that are superimposed after adequately spreading the surfaces in contact with a suitable bonding agent, which is preferably water-based in order to impregnate and soften more effectively the layers of cardboard to be bonded in a curved configuration.
  • a suitable bonding agent which is preferably water-based in order to impregnate and soften more effectively the layers of cardboard to be bonded in a curved configuration.
  • the plasterboard panels A and B which in the sectional view of Figure 1 are formed respectively by the layers of cardboard 1 and 3 with the interposed plaster sheet 2 and by the layers of cardboard 4 and 6 with the interposed plaster sheet 5, before their clamping between the female mold part C and the male mold part D of the forming press, are spread with vinyl glue or other suitable water-based bonding agent in the layers of cardboard 3 or 4, i.e., in the contact faces of the two panels to be joined by overlapping and compression.
  • the retention time of the pairs of curved panels inside the forming press can be shortened significantly, and production times can be speeded up, by spreading onto the surfaces to be bonded bands or strips of water-based vinyl adhesive alternated with bands or strips of hot-melt adhesive, such as self-curing urea resin in an aqueous solution, which sets more quickly than vinyl adhesive.
  • Figures 3 and 4 show that if the curvature to be imparted by means of the female mold part F and the male mold part G of the molding press is particularly significant or marked, the panels A and B to be curved and bonded simultaneously, after spreading suitable adhesives on the faces 3 and 4 to be joined, are laterally provided, alongside their extension and during their insertion in the forming press, with a flexible metal sheet E, which by being arranged so as to lie on the outside of the curve to be formed, in the specific case in contact with the cardboard layer 6 of the panel B, ensures perfect curving of the panels and a substantially uniform distribution of the radial fractures in the plaster sheets 2 and 5.
  • a further operational advantage, while performing the described method, can be provided, especially in cases where curving is particularly significant or marked, by a plurality of free rollers H which, being arranged at the margins of the cavity of the mold and so that their axes are parallel to the generatrix of the curve, convert into a rolling friction the friction of the flexible metal sheet E or, if said metal sheet is not present, of the plasterboard panels A and B alone when the assembly, pushed by the male mold part or half-mold G, descends forcibly into the mold part or female half-mold F to assume the shape provided in the forming press.
  • the devised method compatibly with the ordinary requirements of compression formation, allows the greatest freedom of choice of radii and extent of the curves ( Figures 5 and 6) and in the succession of curves and countercurves ( Figures 7 and 8) or also in the combination of curved portions with other straight ones ( Figure 9).

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)
  • Making Paper Articles (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Finishing Walls (AREA)

Claims (8)

  1. Procédé pour courber des panneaux de plâtre, comprenant principalement les étapes de : courber et assembler simultanément, par pression entre une partie de moule femelle (C, F) et une partie de moule mâle (D, G) d'une presse de formage appropriée, deux ou plusieurs panneaux de plâtre (A,B) superposés, formés chacun par une plaque de plâtre (2, 5) prise en sandwich entre deux couches de carton (1, 3, 4 , 6), après étalement préalable d'un agent de liaison approprié à base d'eau, de façon à imprégner et à ramollir plus efficacement les couches de carton (1, 3, 4 , 6) à ajuster et à lier dans une configuration courbée.
  2. Procédé selon la revendication 1,
    caractérisé en ce que l'étape d'étalement de l'agent de liaison à base d'eau consiste à imprégner les couches en carton (1, 3, 4 , 6) qui doivent être liées de façon à les rendre malléables, et à faciliter leur courbure, tandis que l'étape de mise en courbure comprend pour les plaques de plâtre adjacentes (2, 5), qui sont rigides, la formation d'une succession de fractures radiales (7) qui divergent vers l'extérieur de la courbure selon des intervalles qui peuvent varier selon le rayon de courbure établi et l'épaisseur desdites plaques de plâtre.
  3. Procédé selon les revendications précédentes,
    caractérisé en ce que l'étape de mise sous pression mise en oeuvre pour les panneaux de plâtre (A, B) à courber et à assembler selon une configuration superposée, est réalisée pendant le temps nécessaire à l'évaporation de la base aqueuse et pendant le positionnement de l'agent de liaison à base d'eau, et consiste à stabiliser la courbure imprimée par la presse de formage, en soumettant les couches de carton (1, 3, 4, 6) de chaque panneau de plâtre (A, B) à une déformation, qui est une déformation d'extension pour la couche à l'extérieur de la courbure et une déformation de compression pour la couche à l'intérieur de ladite courbure, pour atteindre un équilibre permanent, stable, des contraintes de courbure opposées des deux couches de carton qui appartiennent à des panneaux différents et sont directement soumises pour affecter la liaison.
  4. Procédé selon les revendications précédentes,
    caractérisé en ce qu'il consiste à étaler dans ladite étape d'étalement, les panneaux de plâtre (A, B) à assembler selon une configuration courbée pour la liaison, avec de l'adhésif vinylique à base d'eau ou un autre agent de liaison approprié à base d'eau.
  5. Procédé selon les revendications 1, 2 et 3,
    caractérisé en ce que le temps de maintien des panneaux de plâtre (A, B) à l'intérieur de la presse de formage pendant ladite étape de mise sous pression est réduit de façon significative par l'intermédiaire d'une étape d'étalement supplémentaire consistant à étaler sur les surfaces à assembler des bandes ou des lames d'adhésif vinylique à base d'eau alternées avec des bandes ou des lames de colle thermofusible, comme de la résine d'urée autodurcissante en solution aqueuse, qui a des temps de prise inférieurs à l'adhésif vinylique.
  6. Procédé selon les revendications précédentes,
    caractérisé en ce que l'étape de mise en courbure consiste de plus, de façon à assurer une courbure identique et exacte aux panneaux de plâtre (A, B) à assembler et une répartition sensiblement uniforme des fractures radiales (7) dans les plaques de plâtre (2, 5) desdits panneaux (A, B), pendant l'introduction desdits panneaux (A, B) entre la partie de moule femelle (F) et la partie de moule mâle (G) de la presse de formage, à agencer latéralement, le long desdits panneaux (A, B), une tôle métallique souple (E), qui est agencée de sorte que, après l'étape de mise sous pression, la tôle métallique (E) se trouve à l'extérieur de la courbure formée par les panneaux de plâtre (A, B).
  7. Procédé selon les revendications précédentes,
    caractérisé en ce qu'il comprend de plus l'étape de prévoir une pluralité de galets libres (H), agencés au niveau des bords de la cavité de la partie de moule femelle (F) avec les axes de ceux-ci parallèles à la génératrice de la courbure de la partie de moule femelle (F), convertir en frottement de roulement un quelconque frottement avec la tôle métallique souple (E) ou, avec les panneaux de plâtre (A) et (B) seuls, lors de la poussée de l'ensemble des panneaux par l'action de la partie de moule mâle (G), pour descendre par force dans la partie de moule femelle (F) de façon à prendre la forme qui est prédéterminée dans la presse de formage.
  8. Panneaux de plâtre courbés par l'intermédiaire d'un procédé tel qu'indiqué ci-dessus dans l'une quelconque des revendications 1 - 7,
    caractérisé en ce qu'ils sont constitués par des composants courbés, formés par la liaison par compression de deux ou de plusieurs panneaux de plâtre superposés (A, B), comprenant chacun au moins une plaque de plâtre (2, 5) disposée entre deux couches de carton (1, 3, 4, 6), ayant des parties courbées de profils de différentes formes, lesdites plaques de plâtre (2, 5) comprenant une succession de fractures radiales (7) qui divergent vers l'extérieur de la courbure de celles-ci et sont agencées selon des intervalles qui peuvent varier en fonction du rayon de courbure et de l'épaisseur desdites plaques de plâtre (2, 5).
EP02771654A 2001-05-24 2002-05-22 Procede de flexion de panneaux de platre et composants ainsi obtenus Expired - Lifetime EP1389251B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT2001FO000015A ITFO20010015A1 (it) 2001-05-24 2001-05-24 Metodo per curvare pannelli di cartongesso ed elementi cosi' ottenuti.
ITFO20010015 2001-05-24
PCT/EP2002/005613 WO2002095157A1 (fr) 2001-05-24 2002-05-22 Procede de flexion de panneaux de platre et composants ainsi obtenus

Publications (2)

Publication Number Publication Date
EP1389251A1 EP1389251A1 (fr) 2004-02-18
EP1389251B1 true EP1389251B1 (fr) 2005-11-09

Family

ID=11442423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02771654A Expired - Lifetime EP1389251B1 (fr) 2001-05-24 2002-05-22 Procede de flexion de panneaux de platre et composants ainsi obtenus

Country Status (11)

Country Link
EP (1) EP1389251B1 (fr)
JP (1) JP2004525015A (fr)
CN (1) CN1274929C (fr)
AT (1) ATE309427T1 (fr)
CA (1) CA2447701C (fr)
DE (1) DE60207238T2 (fr)
DK (1) DK1389251T3 (fr)
ES (1) ES2253560T3 (fr)
IT (1) ITFO20010015A1 (fr)
RU (1) RU2286251C2 (fr)
WO (1) WO2002095157A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020020427A1 (fr) * 2018-07-25 2020-01-30 Knauf Gips Kg Procédé et dispositif pour former une plaque de plâtre façonnée

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFO20010015A1 (it) 2001-05-24 2002-11-24 Eurosistemi S R L Metodo per curvare pannelli di cartongesso ed elementi cosi' ottenuti.
ITBO20080553A1 (it) * 2008-09-11 2010-03-12 Cierre Di Celli Roberto Metodo per realizzare un pannello curvo e pannello così ottenuto
DE102009047917B4 (de) 2009-10-01 2015-08-27 Fermacell Gmbh Mehrschichtige, gekrümmte Leichtbauplatte sowie Verfahren zu ihrer Herstellung
CN102059906B (zh) * 2010-11-24 2013-05-01 南安市贝斯泰石业有限公司 一种透光曲面石材及其生产方法
CN104947847A (zh) * 2015-06-15 2015-09-30 深圳赤晓建筑科技有限公司 弧形夹芯板及弧形墙体以及弧形夹芯板的生产方法
EP4434706A1 (fr) * 2023-03-23 2024-09-25 Saint-Gobain Placo Appareil pour le craquage d'une matrice de gypse d'un panneau à base de gypse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3176950B2 (ja) * 1991-03-30 2001-06-18 チヨダウーテ株式会社 凹凸模様を有する石膏ボードの製造方法
JPH04325201A (ja) * 1991-04-25 1992-11-13 Yoshino Sekko Kk 曲面ボードの成形方法及び曲面形成用の型枠
JPH08187817A (ja) * 1995-01-12 1996-07-23 Chichibu Onoda Cement Corp 建築用材料
IT1283521B1 (it) 1996-07-26 1998-04-21 Profil Gips Di Serafini Livio Metodo per la realizzazione di elementi di finitura per opere murarie e simili da lastre multistrato ed elementi cosi' ottenuti
IT1283378B1 (it) * 1996-07-31 1998-04-17 Xiloform S P A Procedimento e macchina per la fabbricazione di profili in legno compensato curvato, particolarmente per la copertura di tubazioni e
ITFO20010015A1 (it) 2001-05-24 2002-11-24 Eurosistemi S R L Metodo per curvare pannelli di cartongesso ed elementi cosi' ottenuti.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020020427A1 (fr) * 2018-07-25 2020-01-30 Knauf Gips Kg Procédé et dispositif pour former une plaque de plâtre façonnée
EP3826815A1 (fr) * 2018-07-25 2021-06-02 Knauf Gips KG Procédé et dispositif pour former une plaque de plâtre façonnée

Also Published As

Publication number Publication date
DK1389251T3 (da) 2006-02-06
WO2002095157A1 (fr) 2002-11-28
EP1389251A1 (fr) 2004-02-18
RU2286251C2 (ru) 2006-10-27
ATE309427T1 (de) 2005-11-15
CN1511214A (zh) 2004-07-07
JP2004525015A (ja) 2004-08-19
DE60207238T2 (de) 2006-03-23
ITFO20010015A0 (it) 2001-05-24
CA2447701A1 (fr) 2002-11-28
CN1274929C (zh) 2006-09-13
DE60207238D1 (de) 2005-12-15
CA2447701C (fr) 2008-08-19
ES2253560T3 (es) 2006-06-01
RU2003137009A (ru) 2005-05-27
ITFO20010015A1 (it) 2002-11-24

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